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-rw-r--r--m4/00gnulib.m485
-rw-r--r--m4/__inline.m422
-rw-r--r--m4/absolute-header.m4100
-rw-r--r--m4/ax_check_gnu_make.m44
-rw-r--r--m4/ax_code_coverage.m46
-rw-r--r--m4/extensions.m4227
-rw-r--r--m4/extern-inline.m4130
-rw-r--r--m4/gnulib-common.m41075
-rw-r--r--m4/gnulib-comp.m4412
-rw-r--r--m4/include_next.m4224
-rw-r--r--m4/ld-output-def.m429
-rw-r--r--m4/ld-version-script.m448
-rw-r--r--m4/libtool.m431
-rw-r--r--m4/limits-h.m441
-rw-r--r--m4/manywarnings.m4211
-rw-r--r--m4/minmax.m444
-rw-r--r--m4/multiarch.m465
-rw-r--r--m4/off_t.m418
-rw-r--r--m4/ssize_t.m423
-rw-r--r--m4/stdbool.m4118
-rw-r--r--m4/stddef_h.m497
-rw-r--r--m4/stdint.m4531
-rw-r--r--m4/stdlib_h.m4200
-rw-r--r--m4/string_h.m4145
-rw-r--r--m4/strverscmp.m422
-rw-r--r--m4/sys_types_h.m470
-rw-r--r--m4/unistd_h.m4270
-rw-r--r--m4/valgrind-tests.m4103
-rw-r--r--m4/visibility.m482
-rw-r--r--m4/warn-on-use.m449
-rw-r--r--m4/warnings.m4110
-rw-r--r--m4/wchar_t.m424
-rw-r--r--m4/wint_t.m457
-rw-r--r--m4/zzgnulib.m423
34 files changed, 4679 insertions, 17 deletions
diff --git a/m4/00gnulib.m4 b/m4/00gnulib.m4
new file mode 100644
index 0000000..dea34e8
--- /dev/null
+++ b/m4/00gnulib.m4
@@ -0,0 +1,85 @@
+# 00gnulib.m4 serial 8
+dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl This file must be named something that sorts before all other
+dnl gnulib-provided .m4 files. It is needed until the clang fix has
+dnl been included in Autoconf.
+
+# The following definitions arrange to use a compiler option
+# -Werror=implicit-function-declaration in AC_CHECK_DECL, when the
+# compiler is clang. Without it, clang implicitly declares "known"
+# library functions in C mode, but not in C++ mode, which would cause
+# Gnulib to omit a declaration and thus later produce an error in C++
+# mode. As of clang 9.0, these "known" functions are identified through
+# LIBBUILTIN invocations in the LLVM source file
+# llvm/tools/clang/include/clang/Basic/Builtins.def.
+# It's not possible to AC_REQUIRE the extra tests from AC_CHECK_DECL,
+# because AC_CHECK_DECL, like other Autoconf built-ins, is not supposed
+# to AC_REQUIRE anything: some configure.ac files have their first
+# AC_CHECK_DECL executed conditionally. Therefore append the extra tests
+# to AC_PROG_CC.
+AC_DEFUN([gl_COMPILER_CLANG],
+[
+dnl AC_REQUIRE([AC_PROG_CC])
+ AC_CACHE_CHECK([whether the compiler is clang],
+ [gl_cv_compiler_clang],
+ [dnl Use _AC_COMPILE_IFELSE instead of AC_EGREP_CPP, to avoid error
+ dnl "circular dependency of AC_LANG_COMPILER(C)" if AC_PROG_CC has
+ dnl not yet been invoked.
+ _AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+ #ifdef __clang__
+ barfbarf
+ #endif
+ ]],[[]])
+ ],
+ [gl_cv_compiler_clang=no],
+ [gl_cv_compiler_clang=yes])
+ ])
+])
+AC_DEFUN([gl_COMPILER_PREPARE_CHECK_DECL],
+[
+dnl AC_REQUIRE([AC_PROG_CC])
+dnl AC_REQUIRE([gl_COMPILER_CLANG])
+ AC_CACHE_CHECK([for compiler option needed when checking for declarations],
+ [gl_cv_compiler_check_decl_option],
+ [if test $gl_cv_compiler_clang = yes; then
+ dnl Test whether the compiler supports the option
+ dnl '-Werror=implicit-function-declaration'.
+ save_ac_compile="$ac_compile"
+ ac_compile="$ac_compile -Werror=implicit-function-declaration"
+ dnl Use _AC_COMPILE_IFELSE instead of AC_COMPILE_IFELSE, to avoid a
+ dnl warning "AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS".
+ _AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]],[[]])],
+ [gl_cv_compiler_check_decl_option='-Werror=implicit-function-declaration'],
+ [gl_cv_compiler_check_decl_option=none])
+ ac_compile="$save_ac_compile"
+ else
+ gl_cv_compiler_check_decl_option=none
+ fi
+ ])
+ if test "x$gl_cv_compiler_check_decl_option" != xnone; then
+ ac_compile_for_check_decl="$ac_compile $gl_cv_compiler_check_decl_option"
+ else
+ ac_compile_for_check_decl="$ac_compile"
+ fi
+])
+dnl Redefine _AC_CHECK_DECL_BODY so that it references ac_compile_for_check_decl
+dnl instead of ac_compile. If, for whatever reason, the override of AC_PROG_CC
+dnl in zzgnulib.m4 is inactive, use the original ac_compile.
+m4_define([_AC_CHECK_DECL_BODY],
+[ ac_save_ac_compile="$ac_compile"
+ if test -n "$ac_compile_for_check_decl"; then
+ ac_compile="$ac_compile_for_check_decl"
+ fi]
+m4_defn([_AC_CHECK_DECL_BODY])[ ac_compile="$ac_save_ac_compile"
+])
+
+# gl_00GNULIB
+# -----------
+# Witness macro that this file has been included. Needed to force
+# Automake to include this file prior to all other gnulib .m4 files.
+AC_DEFUN([gl_00GNULIB])
diff --git a/m4/__inline.m4 b/m4/__inline.m4
new file mode 100644
index 0000000..fbe2098
--- /dev/null
+++ b/m4/__inline.m4
@@ -0,0 +1,22 @@
+# Test for __inline keyword
+dnl Copyright 2017-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl___INLINE],
+[
+ AC_CACHE_CHECK([whether the compiler supports the __inline keyword],
+ [gl_cv_c___inline],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[typedef int foo_t;
+ static __inline foo_t foo (void) { return 0; }]],
+ [[return foo ();]])],
+ [gl_cv_c___inline=yes],
+ [gl_cv_c___inline=no])])
+ if test $gl_cv_c___inline = yes; then
+ AC_DEFINE([HAVE___INLINE], [1],
+ [Define to 1 if the compiler supports the keyword '__inline'.])
+ fi
+])
diff --git a/m4/absolute-header.m4 b/m4/absolute-header.m4
new file mode 100644
index 0000000..67d6507
--- /dev/null
+++ b/m4/absolute-header.m4
@@ -0,0 +1,100 @@
+# absolute-header.m4 serial 17
+dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Derek Price.
+
+# gl_ABSOLUTE_HEADER(HEADER1 HEADER2 ...)
+# ---------------------------------------
+# Find the absolute name of a header file, testing first if the header exists.
+# If the header were sys/inttypes.h, this macro would define
+# ABSOLUTE_SYS_INTTYPES_H to the '""' quoted absolute name of sys/inttypes.h
+# in config.h
+# (e.g. '#define ABSOLUTE_SYS_INTTYPES_H "///usr/include/sys/inttypes.h"').
+# The three "///" are to pacify Sun C 5.8, which otherwise would say
+# "warning: #include of /usr/include/... may be non-portable".
+# Use '""', not '<>', so that the /// cannot be confused with a C99 comment.
+# Note: This macro assumes that the header file is not empty after
+# preprocessing, i.e. it does not only define preprocessor macros but also
+# provides some type/enum definitions or function/variable declarations.
+AC_DEFUN([gl_ABSOLUTE_HEADER],
+[AC_REQUIRE([AC_CANONICAL_HOST])
+AC_LANG_PREPROC_REQUIRE()dnl
+m4_foreach_w([gl_HEADER_NAME], [$1],
+ [AS_VAR_PUSHDEF([gl_absolute_header],
+ [gl_cv_absolute_]m4_defn([gl_HEADER_NAME]))dnl
+ AC_CACHE_CHECK([absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+ [gl_absolute_header],
+ [AS_VAR_PUSHDEF([ac_header_exists],
+ [ac_cv_header_]m4_defn([gl_HEADER_NAME]))dnl
+ AC_CHECK_HEADERS_ONCE(m4_defn([gl_HEADER_NAME]))dnl
+ if test AS_VAR_GET([ac_header_exists]) = yes; then
+ gl_ABSOLUTE_HEADER_ONE(m4_defn([gl_HEADER_NAME]))
+ fi
+ AS_VAR_POPDEF([ac_header_exists])dnl
+ ])dnl
+ AC_DEFINE_UNQUOTED(AS_TR_CPP([ABSOLUTE_]m4_defn([gl_HEADER_NAME])),
+ ["AS_VAR_GET([gl_absolute_header])"],
+ [Define this to an absolute name of <]m4_defn([gl_HEADER_NAME])[>.])
+ AS_VAR_POPDEF([gl_absolute_header])dnl
+])dnl
+])# gl_ABSOLUTE_HEADER
+
+# gl_ABSOLUTE_HEADER_ONE(HEADER)
+# ------------------------------
+# Like gl_ABSOLUTE_HEADER, except that:
+# - it assumes that the header exists,
+# - it uses the current CPPFLAGS,
+# - it does not cache the result,
+# - it is silent.
+AC_DEFUN([gl_ABSOLUTE_HEADER_ONE],
+[
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ AC_LANG_CONFTEST([AC_LANG_SOURCE([[#include <]]m4_dquote([$1])[[>]])])
+ dnl AIX "xlc -E" and "cc -E" omit #line directives for header files
+ dnl that contain only a #include of other header files and no
+ dnl non-comment tokens of their own. This leads to a failure to
+ dnl detect the absolute name of <dirent.h>, <signal.h>, <poll.h>
+ dnl and others. The workaround is to force preservation of comments
+ dnl through option -C. This ensures all necessary #line directives
+ dnl are present. GCC supports option -C as well.
+ case "$host_os" in
+ aix*) gl_absname_cpp="$ac_cpp -C" ;;
+ *) gl_absname_cpp="$ac_cpp" ;;
+ esac
+changequote(,)
+ case "$host_os" in
+ mingw*)
+ dnl For the sake of native Windows compilers (excluding gcc),
+ dnl treat backslash as a directory separator, like /.
+ dnl Actually, these compilers use a double-backslash as
+ dnl directory separator, inside the
+ dnl # line "filename"
+ dnl directives.
+ gl_dirsep_regex='[/\\]'
+ ;;
+ *)
+ gl_dirsep_regex='\/'
+ ;;
+ esac
+ dnl A sed expression that turns a string into a basic regular
+ dnl expression, for use within "/.../".
+ gl_make_literal_regex_sed='s,[]$^\\.*/[],\\&,g'
+ gl_header_literal_regex=`echo '$1' \
+ | sed -e "$gl_make_literal_regex_sed"`
+ gl_absolute_header_sed="/${gl_dirsep_regex}${gl_header_literal_regex}/"'{
+ s/.*"\(.*'"${gl_dirsep_regex}${gl_header_literal_regex}"'\)".*/\1/
+ s|^/[^/]|//&|
+ p
+ q
+ }'
+changequote([,])
+ dnl eval is necessary to expand gl_absname_cpp.
+ dnl Ultrix and Pyramid sh refuse to redirect output of eval,
+ dnl so use subshell.
+ AS_VAR_SET([gl_cv_absolute_]AS_TR_SH([[$1]]),
+[`(eval "$gl_absname_cpp conftest.$ac_ext") 2>&AS_MESSAGE_LOG_FD |
+ sed -n "$gl_absolute_header_sed"`])
+])
diff --git a/m4/ax_check_gnu_make.m4 b/m4/ax_check_gnu_make.m4
index 6811043..785dc96 100644
--- a/m4/ax_check_gnu_make.m4
+++ b/m4/ax_check_gnu_make.m4
@@ -69,7 +69,7 @@
# and this notice are preserved. This file is offered as-is, without any
# warranty.
-#serial 11
+#serial 12
AC_DEFUN([AX_CHECK_GNU_MAKE],dnl
[AC_PROG_AWK
@@ -87,7 +87,7 @@ dnl Search all the common names for GNU make
done ;])
dnl If there was a GNU version, then set @ifGNUmake@ to the empty string, '#' otherwise
AS_VAR_IF([_cv_gnu_make_command], [""], [AS_VAR_SET([ifGNUmake], ["#"])], [AS_VAR_SET([ifGNUmake], [""])])
- AS_VAR_IF([_cv_gnu_make_command], [""], [AS_VAR_SET([ifnGNUmake], [""])], [AS_VAR_SET([ifGNUmake], ["#"])])
+ AS_VAR_IF([_cv_gnu_make_command], [""], [AS_VAR_SET([ifnGNUmake], [""])], [AS_VAR_SET([ifnGNUmake], ["#"])])
AS_VAR_IF([_cv_gnu_make_command], [""], [AS_UNSET(ax_cv_gnu_make_command)], [AS_VAR_SET([ax_cv_gnu_make_command], [${_cv_gnu_make_command}])])
AS_VAR_IF([_cv_gnu_make_command], [""],[$2],[$1])
AC_SUBST([ifGNUmake])
diff --git a/m4/ax_code_coverage.m4 b/m4/ax_code_coverage.m4
index 3d36924..352165b 100644
--- a/m4/ax_code_coverage.m4
+++ b/m4/ax_code_coverage.m4
@@ -74,7 +74,7 @@
# You should have received a copy of the GNU Lesser General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
-#serial 32
+#serial 34
m4_define(_AX_CODE_COVERAGE_RULES,[
AX_ADD_AM_MACRO_STATIC([
@@ -138,7 +138,7 @@ CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT ?=\
CODE_COVERAGE_GENHTML_OPTIONS ?= \$(CODE_COVERAGE_GENHTML_OPTIONS_DEFAULT)
CODE_COVERAGE_IGNORE_PATTERN ?=
-GITIGNOREFILES = \$(GITIGNOREFILES) \$(CODE_COVERAGE_OUTPUT_FILE) \$(CODE_COVERAGE_OUTPUT_DIRECTORY)
+GITIGNOREFILES := \$(GITIGNOREFILES) \$(CODE_COVERAGE_OUTPUT_FILE) \$(CODE_COVERAGE_OUTPUT_DIRECTORY)
code_coverage_v_lcov_cap = \$(code_coverage_v_lcov_cap_\$(V))
code_coverage_v_lcov_cap_ = \$(code_coverage_v_lcov_cap_\$(AM_DEFAULT_VERBOSITY))
code_coverage_v_lcov_cap_0 = @echo \" LCOV --capture\" \$(CODE_COVERAGE_OUTPUT_FILE);
@@ -175,7 +175,7 @@ code-coverage-clean:
code-coverage-dist-clean:
-A][M_DISTCHECK_CONFIGURE_FLAGS = \$(A][M_DISTCHECK_CONFIGURE_FLAGS) --disable-code-coverage
+A][M_DISTCHECK_CONFIGURE_FLAGS := \$(A][M_DISTCHECK_CONFIGURE_FLAGS) --disable-code-coverage
else # ifneq (\$(abs_builddir), \$(abs_top_builddir))
check-code-coverage:
diff --git a/m4/extensions.m4 b/m4/extensions.m4
new file mode 100644
index 0000000..0b3e4b5
--- /dev/null
+++ b/m4/extensions.m4
@@ -0,0 +1,227 @@
+# serial 22 -*- Autoconf -*-
+# Enable extensions on systems that normally disable them.
+
+# Copyright (C) 2003, 2006-2022 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+dnl Define to empty for the benefit of Autoconf 2.69 and earlier, so that
+dnl AC_USE_SYSTEM_EXTENSIONS (below) can be used unchanged from Autoconf 2.70+.
+m4_ifndef([AC_CHECK_INCLUDES_DEFAULT],
+ [AC_DEFUN([AC_CHECK_INCLUDES_DEFAULT], [])])
+
+# This definition of AC_USE_SYSTEM_EXTENSIONS is stolen from git
+# Autoconf. Perhaps we can remove this once we can assume Autoconf
+# is recent-enough everywhere, but since Autoconf mutates rapidly
+# enough in this area it's likely we'll need to redefine
+# AC_USE_SYSTEM_EXTENSIONS for quite some time.
+
+# If autoconf reports a warning
+# warning: AC_COMPILE_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# or warning: AC_RUN_IFELSE was called before AC_USE_SYSTEM_EXTENSIONS
+# the fix is
+# 1) to ensure that AC_USE_SYSTEM_EXTENSIONS is never directly invoked
+# but always AC_REQUIREd,
+# 2) to ensure that for each occurrence of
+# AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+# or
+# AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+# the corresponding gnulib module description has 'extensions' among
+# its dependencies. This will ensure that the gl_USE_SYSTEM_EXTENSIONS
+# invocation occurs in gl_EARLY, not in gl_INIT.
+
+m4_version_prereq([2.70.1], [], [
+
+# AC_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+# We unconditionally define as many of the known feature-enabling
+# as possible, reserving conditional behavior for macros that are
+# known to cause problems on some platforms (such as __EXTENSIONS__).
+AC_DEFUN_ONCE([AC_USE_SYSTEM_EXTENSIONS],
+[AC_BEFORE([$0], [AC_PREPROC_IFELSE])dnl
+AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl
+AC_BEFORE([$0], [AC_LINK_IFELSE])dnl
+AC_BEFORE([$0], [AC_RUN_IFELSE])dnl
+AC_BEFORE([$0], [AC_CHECK_INCLUDES_DEFAULT])dnl
+dnl #undef in AH_VERBATIM gets replaced with #define by AC_DEFINE.
+dnl Use a different key than __EXTENSIONS__, as that name broke existing
+dnl configure.ac when using autoheader 2.62.
+dnl The macros below are in alphabetical order ignoring leading _ or __
+dnl prefixes.
+AH_VERBATIM([USE_SYSTEM_EXTENSIONS],
+[/* Enable extensions on AIX 3, Interix. */
+#ifndef _ALL_SOURCE
+# undef _ALL_SOURCE
+#endif
+/* Enable general extensions on macOS. */
+#ifndef _DARWIN_C_SOURCE
+# undef _DARWIN_C_SOURCE
+#endif
+/* Enable general extensions on Solaris. */
+#ifndef __EXTENSIONS__
+# undef __EXTENSIONS__
+#endif
+/* Enable GNU extensions on systems that have them. */
+#ifndef _GNU_SOURCE
+# undef _GNU_SOURCE
+#endif
+/* Enable X/Open compliant socket functions that do not require linking
+ with -lxnet on HP-UX 11.11. */
+#ifndef _HPUX_ALT_XOPEN_SOCKET_API
+# undef _HPUX_ALT_XOPEN_SOCKET_API
+#endif
+/* Identify the host operating system as Minix.
+ This macro does not affect the system headers' behavior.
+ A future release of Autoconf may stop defining this macro. */
+#ifndef _MINIX
+# undef _MINIX
+#endif
+/* Enable general extensions on NetBSD.
+ Enable NetBSD compatibility extensions on Minix. */
+#ifndef _NETBSD_SOURCE
+# undef _NETBSD_SOURCE
+#endif
+/* Enable OpenBSD compatibility extensions on NetBSD.
+ Oddly enough, this does nothing on OpenBSD. */
+#ifndef _OPENBSD_SOURCE
+# undef _OPENBSD_SOURCE
+#endif
+/* Define to 1 if needed for POSIX-compatible behavior. */
+#ifndef _POSIX_SOURCE
+# undef _POSIX_SOURCE
+#endif
+/* Define to 2 if needed for POSIX-compatible behavior. */
+#ifndef _POSIX_1_SOURCE
+# undef _POSIX_1_SOURCE
+#endif
+/* Enable POSIX-compatible threading on Solaris. */
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# undef _POSIX_PTHREAD_SEMANTICS
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-5:2014. */
+#ifndef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+# undef __STDC_WANT_IEC_60559_ATTRIBS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-1:2014. */
+#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+# undef __STDC_WANT_IEC_60559_BFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-2:2015. */
+#ifndef __STDC_WANT_IEC_60559_DFP_EXT__
+# undef __STDC_WANT_IEC_60559_DFP_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-4:2015. */
+#ifndef __STDC_WANT_IEC_60559_FUNCS_EXT__
+# undef __STDC_WANT_IEC_60559_FUNCS_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TS 18661-3:2015. */
+#ifndef __STDC_WANT_IEC_60559_TYPES_EXT__
+# undef __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+/* Enable extensions specified by ISO/IEC TR 24731-2:2010. */
+#ifndef __STDC_WANT_LIB_EXT2__
+# undef __STDC_WANT_LIB_EXT2__
+#endif
+/* Enable extensions specified by ISO/IEC 24747:2009. */
+#ifndef __STDC_WANT_MATH_SPEC_FUNCS__
+# undef __STDC_WANT_MATH_SPEC_FUNCS__
+#endif
+/* Enable extensions on HP NonStop. */
+#ifndef _TANDEM_SOURCE
+# undef _TANDEM_SOURCE
+#endif
+/* Enable X/Open extensions. Define to 500 only if necessary
+ to make mbstate_t available. */
+#ifndef _XOPEN_SOURCE
+# undef _XOPEN_SOURCE
+#endif
+])dnl
+
+ AC_REQUIRE([AC_CHECK_INCLUDES_DEFAULT])dnl
+ _AC_CHECK_HEADER_ONCE([wchar.h])
+ _AC_CHECK_HEADER_ONCE([minix/config.h])
+
+dnl Defining __EXTENSIONS__ may break the system headers on some systems.
+dnl (FIXME: Which ones?)
+ AC_CACHE_CHECK([whether it is safe to define __EXTENSIONS__],
+ [ac_cv_safe_to_define___extensions__],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+# define __EXTENSIONS__ 1
+ ]AC_INCLUDES_DEFAULT])],
+ [ac_cv_safe_to_define___extensions__=yes],
+ [ac_cv_safe_to_define___extensions__=no])])
+
+dnl HP-UX 11.11 defines mbstate_t only if _XOPEN_SOURCE is defined to
+dnl 500, regardless of whether compiling with -Ae or -D_HPUX_SOURCE=1.
+dnl But defining _XOPEN_SOURCE may turn *off* extensions on platforms
+dnl not covered by turn-on-extensions macros (notably Dragonfly, Free,
+dnl and OpenBSD, which don't have any equivalent of _NETBSD_SOURCE) so
+dnl it should only be defined when necessary.
+ AC_CACHE_CHECK([whether _XOPEN_SOURCE should be defined],
+ [ac_cv_should_define__xopen_source],
+ [ac_cv_should_define__xopen_source=no
+ AS_IF([test $ac_cv_header_wchar_h = yes],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+ #include <wchar.h>
+ mbstate_t x;]])],
+ [],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+ #define _XOPEN_SOURCE 500
+ #include <wchar.h>
+ mbstate_t x;]])],
+ [ac_cv_should_define__xopen_source=yes])])])])
+
+ AC_DEFINE([_ALL_SOURCE])
+ AC_DEFINE([_DARWIN_C_SOURCE])
+ AC_DEFINE([_GNU_SOURCE])
+ AC_DEFINE([_HPUX_ALT_XOPEN_SOCKET_API])
+ AC_DEFINE([_NETBSD_SOURCE])
+ AC_DEFINE([_OPENBSD_SOURCE])
+ AC_DEFINE([_POSIX_PTHREAD_SEMANTICS])
+ AC_DEFINE([__STDC_WANT_IEC_60559_ATTRIBS_EXT__])
+ AC_DEFINE([__STDC_WANT_IEC_60559_BFP_EXT__])
+ AC_DEFINE([__STDC_WANT_IEC_60559_DFP_EXT__])
+ AC_DEFINE([__STDC_WANT_IEC_60559_FUNCS_EXT__])
+ AC_DEFINE([__STDC_WANT_IEC_60559_TYPES_EXT__])
+ AC_DEFINE([__STDC_WANT_LIB_EXT2__])
+ AC_DEFINE([__STDC_WANT_MATH_SPEC_FUNCS__])
+ AC_DEFINE([_TANDEM_SOURCE])
+ AS_IF([test $ac_cv_header_minix_config_h = yes],
+ [MINIX=yes
+ AC_DEFINE([_MINIX])
+ AC_DEFINE([_POSIX_SOURCE])
+ AC_DEFINE([_POSIX_1_SOURCE], [2])],
+ [MINIX=])
+ AS_IF([test $ac_cv_safe_to_define___extensions__ = yes],
+ [AC_DEFINE([__EXTENSIONS__])])
+ AS_IF([test $ac_cv_should_define__xopen_source = yes],
+ [AC_DEFINE([_XOPEN_SOURCE], [500])])
+])# AC_USE_SYSTEM_EXTENSIONS
+])
+
+# gl_USE_SYSTEM_EXTENSIONS
+# ------------------------
+# Enable extensions on systems that normally disable them,
+# typically due to standards-conformance issues.
+AC_DEFUN_ONCE([gl_USE_SYSTEM_EXTENSIONS],
+[
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ dnl On OpenBSD 6.8 with GCC, the include files contain a couple of
+ dnl definitions that are only activated with an explicit -D_ISOC11_SOURCE.
+ dnl That's because this version of GCC (4.2.1) supports the option
+ dnl '-std=gnu99' but not the option '-std=gnu11'.
+ AC_REQUIRE([AC_CANONICAL_HOST])
+ case "$host_os" in
+ openbsd*)
+ AC_DEFINE([_ISOC11_SOURCE], [1],
+ [Define to enable the declarations of ISO C 11 types and functions.])
+ ;;
+ esac
+])
diff --git a/m4/extern-inline.m4 b/m4/extern-inline.m4
new file mode 100644
index 0000000..8a12bdd
--- /dev/null
+++ b/m4/extern-inline.m4
@@ -0,0 +1,130 @@
+dnl 'extern inline' a la ISO C99.
+
+dnl Copyright 2012-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_EXTERN_INLINE],
+[
+ AC_CACHE_CHECK([whether ctype.h defines __header_inline],
+ [gl_cv_have___header_inline],
+ [AC_PREPROC_IFELSE(
+ [AC_LANG_SOURCE([[#include <ctype.h>
+ #ifndef __header_inline
+ #error "<ctype.h> does not define __header_inline"
+ #endif
+ ]])],
+ [gl_cv_have___header_inline=yes],
+ [gl_cv_have___header_inline=no])])
+ if test "$gl_cv_have___header_inline" = yes; then
+ AC_DEFINE([HAVE___HEADER_INLINE], [1],
+ [Define to 1 if ctype.h defines __header_inline.])
+ fi
+
+ AH_VERBATIM([HAVE___HEADER_INLINE_1],
+[/* Please see the Gnulib manual for how to use these macros.
+
+ Suppress extern inline with HP-UX cc, as it appears to be broken; see
+ <https://lists.gnu.org/r/bug-texinfo/2013-02/msg00030.html>.
+
+ Suppress extern inline with Sun C in standards-conformance mode, as it
+ mishandles inline functions that call each other. E.g., for 'inline void f
+ (void) { } inline void g (void) { f (); }', c99 incorrectly complains
+ 'reference to static identifier "f" in extern inline function'.
+ This bug was observed with Oracle Developer Studio 12.6
+ (Sun C 5.15 SunOS_sparc 2017/05/30).
+
+ Suppress extern inline (with or without __attribute__ ((__gnu_inline__)))
+ on configurations that mistakenly use 'static inline' to implement
+ functions or macros in standard C headers like <ctype.h>. For example,
+ if isdigit is mistakenly implemented via a static inline function,
+ a program containing an extern inline function that calls isdigit
+ may not work since the C standard prohibits extern inline functions
+ from calling static functions (ISO C 99 section 6.7.4.(3).
+ This bug is known to occur on:
+
+ OS X 10.8 and earlier; see:
+ https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html
+
+ DragonFly; see
+ http://muscles.dragonflybsd.org/bulk/clang-master-potential/20141111_102002/logs/ah-tty-0.3.12.log
+
+ FreeBSD; see:
+ https://lists.gnu.org/r/bug-gnulib/2014-07/msg00104.html
+
+ OS X 10.9 has a macro __header_inline indicating the bug is fixed for C and
+ for clang but remains for g++; see <https://trac.macports.org/ticket/41033>.
+ Assume DragonFly and FreeBSD will be similar.
+
+ GCC 4.3 and above with -std=c99 or -std=gnu99 implements ISO C99
+ inline semantics, unless -fgnu89-inline is used. It defines a macro
+ __GNUC_STDC_INLINE__ to indicate this situation or a macro
+ __GNUC_GNU_INLINE__ to indicate the opposite situation.
+ GCC 4.2 with -std=c99 or -std=gnu99 implements the GNU C inline
+ semantics but warns, unless -fgnu89-inline is used:
+ warning: C99 inline functions are not supported; using GNU89
+ warning: to disable this warning use -fgnu89-inline or the gnu_inline function attribute
+ It defines a macro __GNUC_GNU_INLINE__ to indicate this situation.
+ */
+#if (((defined __APPLE__ && defined __MACH__) \
+ || defined __DragonFly__ || defined __FreeBSD__) \
+ && (defined HAVE___HEADER_INLINE \
+ ? (defined __cplusplus && defined __GNUC_STDC_INLINE__ \
+ && ! defined __clang__) \
+ : ((! defined _DONT_USE_CTYPE_INLINE_ \
+ && (defined __GNUC__ || defined __cplusplus)) \
+ || (defined _FORTIFY_SOURCE && 0 < _FORTIFY_SOURCE \
+ && defined __GNUC__ && ! defined __cplusplus))))
+# define _GL_EXTERN_INLINE_STDHEADER_BUG
+#endif
+#if ((__GNUC__ \
+ ? defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__ \
+ : (199901L <= __STDC_VERSION__ \
+ && !defined __HP_cc \
+ && !defined __PGI \
+ && !(defined __SUNPRO_C && __STDC__))) \
+ && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# define _GL_INLINE inline
+# define _GL_EXTERN_INLINE extern inline
+# define _GL_EXTERN_INLINE_IN_USE
+#elif (2 < __GNUC__ + (7 <= __GNUC_MINOR__) && !defined __STRICT_ANSI__ \
+ && !defined _GL_EXTERN_INLINE_STDHEADER_BUG)
+# if defined __GNUC_GNU_INLINE__ && __GNUC_GNU_INLINE__
+ /* __gnu_inline__ suppresses a GCC 4.2 diagnostic. */
+# define _GL_INLINE extern inline __attribute__ ((__gnu_inline__))
+# else
+# define _GL_INLINE extern inline
+# endif
+# define _GL_EXTERN_INLINE extern
+# define _GL_EXTERN_INLINE_IN_USE
+#else
+# define _GL_INLINE _GL_UNUSED static
+# define _GL_EXTERN_INLINE _GL_UNUSED static
+#endif
+
+/* In GCC 4.6 (inclusive) to 5.1 (exclusive),
+ suppress bogus "no previous prototype for 'FOO'"
+ and "no previous declaration for 'FOO'" diagnostics,
+ when FOO is an inline function in the header; see
+ <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=54113> and
+ <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63877>. */
+#if __GNUC__ == 4 && 6 <= __GNUC_MINOR__
+# if defined __GNUC_STDC_INLINE__ && __GNUC_STDC_INLINE__
+# define _GL_INLINE_HEADER_CONST_PRAGMA
+# else
+# define _GL_INLINE_HEADER_CONST_PRAGMA \
+ _Pragma ("GCC diagnostic ignored \"-Wsuggest-attribute=const\"")
+# endif
+# define _GL_INLINE_HEADER_BEGIN \
+ _Pragma ("GCC diagnostic push") \
+ _Pragma ("GCC diagnostic ignored \"-Wmissing-prototypes\"") \
+ _Pragma ("GCC diagnostic ignored \"-Wmissing-declarations\"") \
+ _GL_INLINE_HEADER_CONST_PRAGMA
+# define _GL_INLINE_HEADER_END \
+ _Pragma ("GCC diagnostic pop")
+#else
+# define _GL_INLINE_HEADER_BEGIN
+# define _GL_INLINE_HEADER_END
+#endif])
+])
diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4
new file mode 100644
index 0000000..30911d1
--- /dev/null
+++ b/m4/gnulib-common.m4
@@ -0,0 +1,1075 @@
+# gnulib-common.m4 serial 73
+dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_PREREQ([2.62])
+
+# gl_COMMON
+# is expanded unconditionally through gnulib-tool magic.
+AC_DEFUN([gl_COMMON], [
+ dnl Use AC_REQUIRE here, so that the code is expanded once only.
+ AC_REQUIRE([gl_00GNULIB])
+ AC_REQUIRE([gl_COMMON_BODY])
+ AC_REQUIRE([gl_ZZGNULIB])
+])
+AC_DEFUN([gl_COMMON_BODY], [
+ AH_VERBATIM([_GL_GNUC_PREREQ],
+[/* True if the compiler says it groks GNU C version MAJOR.MINOR. */
+#if defined __GNUC__ && defined __GNUC_MINOR__
+# define _GL_GNUC_PREREQ(major, minor) \
+ ((major) < __GNUC__ + ((minor) <= __GNUC_MINOR__))
+#else
+# define _GL_GNUC_PREREQ(major, minor) 0
+#endif
+])
+ AH_VERBATIM([_Noreturn],
+[/* The _Noreturn keyword of C11. */
+#ifndef _Noreturn
+# if (defined __cplusplus \
+ && ((201103 <= __cplusplus && !(__GNUC__ == 4 && __GNUC_MINOR__ == 7)) \
+ || (defined _MSC_VER && 1900 <= _MSC_VER)) \
+ && 0)
+ /* [[noreturn]] is not practically usable, because with it the syntax
+ extern _Noreturn void func (...);
+ would not be valid; such a declaration would only be valid with 'extern'
+ and '_Noreturn' swapped, or without the 'extern' keyword. However, some
+ AIX system header files and several gnulib header files use precisely
+ this syntax with 'extern'. */
+# define _Noreturn [[noreturn]]
+# elif ((!defined __cplusplus || defined __clang__) \
+ && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \
+ || (!defined __STRICT_ANSI__ \
+ && (_GL_GNUC_PREREQ (4, 7) \
+ || (defined __apple_build_version__ \
+ ? 6000000 <= __apple_build_version__ \
+ : 3 < __clang_major__ + (5 <= __clang_minor__))))))
+ /* _Noreturn works as-is. */
+# elif _GL_GNUC_PREREQ (2, 8) || defined __clang__ || 0x5110 <= __SUNPRO_C
+# define _Noreturn __attribute__ ((__noreturn__))
+# elif 1200 <= (defined _MSC_VER ? _MSC_VER : 0)
+# define _Noreturn __declspec (noreturn)
+# else
+# define _Noreturn
+# endif
+#endif
+])
+ AH_VERBATIM([isoc99_inline],
+[/* Work around a bug in Apple GCC 4.0.1 build 5465: In C99 mode, it supports
+ the ISO C 99 semantics of 'extern inline' (unlike the GNU C semantics of
+ earlier versions), but does not display it by setting __GNUC_STDC_INLINE__.
+ __APPLE__ && __MACH__ test for Mac OS X.
+ __APPLE_CC__ tests for the Apple compiler and its version.
+ __STDC_VERSION__ tests for the C99 mode. */
+#if defined __APPLE__ && defined __MACH__ && __APPLE_CC__ >= 5465 && !defined __cplusplus && __STDC_VERSION__ >= 199901L && !defined __GNUC_STDC_INLINE__
+# define __GNUC_STDC_INLINE__ 1
+#endif])
+ AH_VERBATIM([attribute],
+[/* Attributes. */
+#if (defined __has_attribute \
+ && (!defined __clang_minor__ \
+ || (defined __apple_build_version__ \
+ ? 6000000 <= __apple_build_version__ \
+ : 3 < __clang_major__ + (5 <= __clang_minor__))))
+# define _GL_HAS_ATTRIBUTE(attr) __has_attribute (__##attr##__)
+#else
+# define _GL_HAS_ATTRIBUTE(attr) _GL_ATTR_##attr
+# define _GL_ATTR_alloc_size _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_always_inline _GL_GNUC_PREREQ (3, 2)
+# define _GL_ATTR_artificial _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_cold _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_const _GL_GNUC_PREREQ (2, 95)
+# define _GL_ATTR_deprecated _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_diagnose_if 0
+# define _GL_ATTR_error _GL_GNUC_PREREQ (4, 3)
+# define _GL_ATTR_externally_visible _GL_GNUC_PREREQ (4, 1)
+# define _GL_ATTR_fallthrough _GL_GNUC_PREREQ (7, 0)
+# define _GL_ATTR_format _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_leaf _GL_GNUC_PREREQ (4, 6)
+# define _GL_ATTR_malloc _GL_GNUC_PREREQ (3, 0)
+# ifdef _ICC
+# define _GL_ATTR_may_alias 0
+# else
+# define _GL_ATTR_may_alias _GL_GNUC_PREREQ (3, 3)
+# endif
+# define _GL_ATTR_noinline _GL_GNUC_PREREQ (3, 1)
+# define _GL_ATTR_nonnull _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_nonstring _GL_GNUC_PREREQ (8, 0)
+# define _GL_ATTR_nothrow _GL_GNUC_PREREQ (3, 3)
+# define _GL_ATTR_packed _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_pure _GL_GNUC_PREREQ (2, 96)
+# define _GL_ATTR_returns_nonnull _GL_GNUC_PREREQ (4, 9)
+# define _GL_ATTR_sentinel _GL_GNUC_PREREQ (4, 0)
+# define _GL_ATTR_unused _GL_GNUC_PREREQ (2, 7)
+# define _GL_ATTR_warn_unused_result _GL_GNUC_PREREQ (3, 4)
+#endif
+
+#ifdef __has_c_attribute
+# if ((defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) <= 201710 \
+ && _GL_GNUC_PREREQ (4, 6))
+# pragma GCC diagnostic ignored "-Wpedantic"
+# endif
+# define _GL_HAS_C_ATTRIBUTE(attr) __has_c_attribute (__##attr##__)
+#else
+# define _GL_HAS_C_ATTRIBUTE(attr) 0
+#endif
+
+]dnl There is no _GL_ATTRIBUTE_ALIGNED; use stdalign's _Alignas instead.
+[
+/* _GL_ATTRIBUTE_ALLOC_SIZE ((N)) declares that the Nth argument of the function
+ is the size of the returned memory block.
+ _GL_ATTRIBUTE_ALLOC_SIZE ((M, N)) declares that the Mth argument multiplied
+ by the Nth argument of the function is the size of the returned memory block.
+ */
+/* Applies to: function, pointer to function, function types. */
+#if _GL_HAS_ATTRIBUTE (alloc_size)
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args) __attribute__ ((__alloc_size__ args))
+#else
+# define _GL_ATTRIBUTE_ALLOC_SIZE(args)
+#endif
+
+/* _GL_ATTRIBUTE_ALWAYS_INLINE tells that the compiler should always inline the
+ function and report an error if it cannot do so. */
+/* Applies to: function. */
+#if _GL_HAS_ATTRIBUTE (always_inline)
+# define _GL_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((__always_inline__))
+#else
+# define _GL_ATTRIBUTE_ALWAYS_INLINE
+#endif
+
+/* _GL_ATTRIBUTE_ARTIFICIAL declares that the function is not important to show
+ in stack traces when debugging. The compiler should omit the function from
+ stack traces. */
+/* Applies to: function. */
+#if _GL_HAS_ATTRIBUTE (artificial)
+# define _GL_ATTRIBUTE_ARTIFICIAL __attribute__ ((__artificial__))
+#else
+# define _GL_ATTRIBUTE_ARTIFICIAL
+#endif
+
+/* _GL_ATTRIBUTE_COLD declares that the function is rarely executed. */
+/* Applies to: functions. */
+/* Avoid __attribute__ ((cold)) on MinGW; see thread starting at
+ <https://lists.gnu.org/r/emacs-devel/2019-04/msg01152.html>.
+ Also, Oracle Studio 12.6 requires 'cold' not '__cold__'. */
+#if _GL_HAS_ATTRIBUTE (cold) && !defined __MINGW32__
+# ifndef __SUNPRO_C
+# define _GL_ATTRIBUTE_COLD __attribute__ ((__cold__))
+# else
+# define _GL_ATTRIBUTE_COLD __attribute__ ((cold))
+# endif
+#else
+# define _GL_ATTRIBUTE_COLD
+#endif
+
+/* _GL_ATTRIBUTE_CONST declares that it is OK for a compiler to omit duplicate
+ calls to the function with the same arguments.
+ This attribute is safe for a function that neither depends on nor affects
+ observable state, and always returns exactly once - e.g., does not loop
+ forever, and does not call longjmp.
+ (This attribute is stricter than _GL_ATTRIBUTE_PURE.) */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (const)
+# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__))
+#else
+# define _GL_ATTRIBUTE_CONST
+#endif
+
+/* _GL_ATTRIBUTE_DEALLOC (F, I) declares that the function returns pointers
+ that can be freed by passing them as the Ith argument to the
+ function F.
+ _GL_ATTRIBUTE_DEALLOC_FREE declares that the function returns pointers that
+ can be freed via 'free'; it can be used only after declaring 'free'. */
+/* Applies to: functions. Cannot be used on inline functions. */
+#if _GL_GNUC_PREREQ (11, 0)
+# define _GL_ATTRIBUTE_DEALLOC(f, i) __attribute__ ((__malloc__ (f, i)))
+#else
+# define _GL_ATTRIBUTE_DEALLOC(f, i)
+#endif
+/* If gnulib's <string.h> or <wchar.h> has already defined this macro, continue
+ to use this earlier definition, since <stdlib.h> may not have been included
+ yet. */
+#ifndef _GL_ATTRIBUTE_DEALLOC_FREE
+# define _GL_ATTRIBUTE_DEALLOC_FREE _GL_ATTRIBUTE_DEALLOC (free, 1)
+#endif
+
+/* _GL_ATTRIBUTE_DEPRECATED: Declares that an entity is deprecated.
+ The compiler may warn if the entity is used. */
+/* Applies to:
+ - function, variable,
+ - struct, union, struct/union member,
+ - enumeration, enumeration item,
+ - typedef,
+ in C++ also: namespace, class, template specialization. */
+#if _GL_HAS_C_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED [[__deprecated__]]
+#elif _GL_HAS_ATTRIBUTE (deprecated)
+# define _GL_ATTRIBUTE_DEPRECATED __attribute__ ((__deprecated__))
+#else
+# define _GL_ATTRIBUTE_DEPRECATED
+#endif
+
+/* _GL_ATTRIBUTE_ERROR(msg) requests an error if a function is called and
+ the function call is not optimized away.
+ _GL_ATTRIBUTE_WARNING(msg) requests a warning if a function is called and
+ the function call is not optimized away. */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (error)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__error__ (msg)))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__warning__ (msg)))
+#elif _GL_HAS_ATTRIBUTE (diagnose_if)
+# define _GL_ATTRIBUTE_ERROR(msg) __attribute__ ((__diagnose_if__ (1, msg, "error")))
+# define _GL_ATTRIBUTE_WARNING(msg) __attribute__ ((__diagnose_if__ (1, msg, "warning")))
+#else
+# define _GL_ATTRIBUTE_ERROR(msg)
+# define _GL_ATTRIBUTE_WARNING(msg)
+#endif
+
+/* _GL_ATTRIBUTE_EXTERNALLY_VISIBLE declares that the entity should remain
+ visible to debuggers etc., even with '-fwhole-program'. */
+/* Applies to: functions, variables. */
+#if _GL_HAS_ATTRIBUTE (externally_visible)
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE __attribute__ ((externally_visible))
+#else
+# define _GL_ATTRIBUTE_EXTERNALLY_VISIBLE
+#endif
+
+/* _GL_ATTRIBUTE_FALLTHROUGH declares that it is not a programming mistake if
+ the control flow falls through to the immediately following 'case' or
+ 'default' label. The compiler should not warn in this case. */
+/* Applies to: Empty statement (;), inside a 'switch' statement. */
+/* Always expands to something. */
+#if _GL_HAS_C_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH [[__fallthrough__]]
+#elif _GL_HAS_ATTRIBUTE (fallthrough)
+# define _GL_ATTRIBUTE_FALLTHROUGH __attribute__ ((__fallthrough__))
+#else
+# define _GL_ATTRIBUTE_FALLTHROUGH ((void) 0)
+#endif
+
+/* _GL_ATTRIBUTE_FORMAT ((ARCHETYPE, STRING-INDEX, FIRST-TO-CHECK))
+ declares that the STRING-INDEXth function argument is a format string of
+ style ARCHETYPE, which is one of:
+ printf, gnu_printf
+ scanf, gnu_scanf,
+ strftime, gnu_strftime,
+ strfmon,
+ or the same thing prefixed and suffixed with '__'.
+ If FIRST-TO-CHECK is not 0, arguments starting at FIRST-TO_CHECK
+ are suitable for the format string. */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (format)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define _GL_ATTRIBUTE_FORMAT(spec)
+#endif
+
+/* _GL_ATTRIBUTE_LEAF declares that if the function is called from some other
+ compilation unit, it executes code from that unit only by return or by
+ exception handling. This declaration lets the compiler optimize that unit
+ more aggressively. */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (leaf)
+# define _GL_ATTRIBUTE_LEAF __attribute__ ((__leaf__))
+#else
+# define _GL_ATTRIBUTE_LEAF
+#endif
+
+/* _GL_ATTRIBUTE_MALLOC declares that the function returns a pointer to freshly
+ allocated memory. */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (malloc)
+# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__))
+#else
+# define _GL_ATTRIBUTE_MALLOC
+#endif
+
+/* _GL_ATTRIBUTE_MAY_ALIAS declares that pointers to the type may point to the
+ same storage as pointers to other types. Thus this declaration disables
+ strict aliasing optimization. */
+/* Applies to: types. */
+/* Oracle Studio 12.6 mishandles may_alias despite __has_attribute OK. */
+#if _GL_HAS_ATTRIBUTE (may_alias) && !defined __SUNPRO_C
+# define _GL_ATTRIBUTE_MAY_ALIAS __attribute__ ((__may_alias__))
+#else
+# define _GL_ATTRIBUTE_MAY_ALIAS
+#endif
+
+/* _GL_ATTRIBUTE_MAYBE_UNUSED declares that it is not a programming mistake if
+ the entity is not used. The compiler should not warn if the entity is not
+ used. */
+/* Applies to:
+ - function, variable,
+ - struct, union, struct/union member,
+ - enumeration, enumeration item,
+ - typedef,
+ in C++ also: class. */
+/* In C++ and C2x, this is spelled [[__maybe_unused__]].
+ GCC's syntax is __attribute__ ((__unused__)).
+ clang supports both syntaxes. */
+#if _GL_HAS_C_ATTRIBUTE (maybe_unused)
+# define _GL_ATTRIBUTE_MAYBE_UNUSED [[__maybe_unused__]]
+#else
+# define _GL_ATTRIBUTE_MAYBE_UNUSED _GL_ATTRIBUTE_UNUSED
+#endif
+/* Alternative spelling of this macro, for convenience. */
+#define _GL_UNUSED _GL_ATTRIBUTE_MAYBE_UNUSED
+/* Earlier spellings of this macro. */
+#define _UNUSED_PARAMETER_ _GL_ATTRIBUTE_MAYBE_UNUSED
+
+/* _GL_ATTRIBUTE_NODISCARD declares that the caller of the function should not
+ discard the return value. The compiler may warn if the caller does not use
+ the return value, unless the caller uses something like ignore_value. */
+/* Applies to: function, enumeration, class. */
+#if _GL_HAS_C_ATTRIBUTE (nodiscard)
+# define _GL_ATTRIBUTE_NODISCARD [[__nodiscard__]]
+#elif _GL_HAS_ATTRIBUTE (warn_unused_result)
+# define _GL_ATTRIBUTE_NODISCARD __attribute__ ((__warn_unused_result__))
+#else
+# define _GL_ATTRIBUTE_NODISCARD
+#endif
+
+/* _GL_ATTRIBUTE_NOINLINE tells that the compiler should not inline the
+ function. */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (noinline)
+# define _GL_ATTRIBUTE_NOINLINE __attribute__ ((__noinline__))
+#else
+# define _GL_ATTRIBUTE_NOINLINE
+#endif
+
+/* _GL_ATTRIBUTE_NONNULL ((N1, N2,...)) declares that the arguments N1, N2,...
+ must not be NULL.
+ _GL_ATTRIBUTE_NONNULL () declares that all pointer arguments must not be
+ null. */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (nonnull)
+# define _GL_ATTRIBUTE_NONNULL(args) __attribute__ ((__nonnull__ args))
+#else
+# define _GL_ATTRIBUTE_NONNULL(args)
+#endif
+
+/* _GL_ATTRIBUTE_NONSTRING declares that the contents of a character array is
+ not meant to be NUL-terminated. */
+/* Applies to: struct/union members and variables that are arrays of element
+ type '[[un]signed] char'. */
+#if _GL_HAS_ATTRIBUTE (nonstring)
+# define _GL_ATTRIBUTE_NONSTRING __attribute__ ((__nonstring__))
+#else
+# define _GL_ATTRIBUTE_NONSTRING
+#endif
+
+/* There is no _GL_ATTRIBUTE_NORETURN; use _Noreturn instead. */
+
+/* _GL_ATTRIBUTE_NOTHROW declares that the function does not throw exceptions.
+ */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (nothrow) && !defined __cplusplus
+# define _GL_ATTRIBUTE_NOTHROW __attribute__ ((__nothrow__))
+#else
+# define _GL_ATTRIBUTE_NOTHROW
+#endif
+
+/* _GL_ATTRIBUTE_PACKED declares:
+ For struct members: The member has the smallest possible alignment.
+ For struct, union, class: All members have the smallest possible alignment,
+ minimizing the memory required. */
+/* Applies to: struct members, struct, union,
+ in C++ also: class. */
+#if _GL_HAS_ATTRIBUTE (packed)
+# define _GL_ATTRIBUTE_PACKED __attribute__ ((__packed__))
+#else
+# define _GL_ATTRIBUTE_PACKED
+#endif
+
+/* _GL_ATTRIBUTE_PURE declares that It is OK for a compiler to omit duplicate
+ calls to the function with the same arguments if observable state is not
+ changed between calls.
+ This attribute is safe for a function that does not affect
+ observable state, and always returns exactly once.
+ (This attribute is looser than _GL_ATTRIBUTE_CONST.) */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (pure)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define _GL_ATTRIBUTE_PURE
+#endif
+
+/* _GL_ATTRIBUTE_RETURNS_NONNULL declares that the function's return value is
+ a non-NULL pointer. */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (returns_nonnull)
+# define _GL_ATTRIBUTE_RETURNS_NONNULL __attribute__ ((__returns_nonnull__))
+#else
+# define _GL_ATTRIBUTE_RETURNS_NONNULL
+#endif
+
+/* _GL_ATTRIBUTE_SENTINEL(pos) declares that the variadic function expects a
+ trailing NULL argument.
+ _GL_ATTRIBUTE_SENTINEL () - The last argument is NULL (requires C99).
+ _GL_ATTRIBUTE_SENTINEL ((N)) - The (N+1)st argument from the end is NULL. */
+/* Applies to: functions. */
+#if _GL_HAS_ATTRIBUTE (sentinel)
+# define _GL_ATTRIBUTE_SENTINEL(pos) __attribute__ ((__sentinel__ pos))
+#else
+# define _GL_ATTRIBUTE_SENTINEL(pos)
+#endif
+
+/* A helper macro. Don't use it directly. */
+#if _GL_HAS_ATTRIBUTE (unused)
+# define _GL_ATTRIBUTE_UNUSED __attribute__ ((__unused__))
+#else
+# define _GL_ATTRIBUTE_UNUSED
+#endif
+
+]dnl There is no _GL_ATTRIBUTE_VISIBILITY; see m4/visibility.m4 instead.
+[
+/* _GL_UNUSED_LABEL; declares that it is not a programming mistake if the
+ immediately preceding label is not used. The compiler should not warn
+ if the label is not used. */
+/* Applies to: label (both in C and C++). */
+/* Note that g++ < 4.5 does not support the '__attribute__ ((__unused__)) ;'
+ syntax. But clang does. */
+#if !(defined __cplusplus && !_GL_GNUC_PREREQ (4, 5)) || defined __clang__
+# define _GL_UNUSED_LABEL _GL_ATTRIBUTE_UNUSED
+#else
+# define _GL_UNUSED_LABEL
+#endif
+])
+ AH_VERBATIM([async_safe],
+[/* The _GL_ASYNC_SAFE marker should be attached to functions that are
+ signal handlers (for signals other than SIGABRT, SIGPIPE) or can be
+ invoked from such signal handlers. Such functions have some restrictions:
+ * All functions that it calls should be marked _GL_ASYNC_SAFE as well,
+ or should be listed as async-signal-safe in POSIX
+ <https://pubs.opengroup.org/onlinepubs/9699919799/functions/V2_chap02.html#tag_15_04>
+ section 2.4.3. Note that malloc(), sprintf(), and fwrite(), in
+ particular, are NOT async-signal-safe.
+ * All memory locations (variables and struct fields) that these functions
+ access must be marked 'volatile'. This holds for both read and write
+ accesses. Otherwise the compiler might optimize away stores to and
+ reads from such locations that occur in the program, depending on its
+ data flow analysis. For example, when the program contains a loop
+ that is intended to inspect a variable set from within a signal handler
+ while (!signal_occurred)
+ ;
+ the compiler is allowed to transform this into an endless loop if the
+ variable 'signal_occurred' is not declared 'volatile'.
+ Additionally, recall that:
+ * A signal handler should not modify errno (except if it is a handler
+ for a fatal signal and ends by raising the same signal again, thus
+ provoking the termination of the process). If it invokes a function
+ that may clobber errno, it needs to save and restore the value of
+ errno. */
+#define _GL_ASYNC_SAFE
+])
+ AH_VERBATIM([micro_optimizations],
+[/* _GL_CMP (n1, n2) performs a three-valued comparison on n1 vs. n2, where
+ n1 and n2 are expressions without side effects, that evaluate to real
+ numbers (excluding NaN).
+ It returns
+ 1 if n1 > n2
+ 0 if n1 == n2
+ -1 if n1 < n2
+ The naïve code (n1 > n2 ? 1 : n1 < n2 ? -1 : 0) produces a conditional
+ jump with nearly all GCC versions up to GCC 10.
+ This variant (n1 < n2 ? -1 : n1 > n2) produces a conditional with many
+ GCC versions up to GCC 9.
+ The better code (n1 > n2) - (n1 < n2) from Hacker's Delight § 2-9
+ avoids conditional jumps in all GCC versions >= 3.4. */
+#define _GL_CMP(n1, n2) (((n1) > (n2)) - ((n1) < (n2)))
+])
+ dnl Hint which direction to take regarding cross-compilation guesses:
+ dnl When a user installs a program on a platform they are not intimately
+ dnl familiar with, --enable-cross-guesses=conservative is the appropriate
+ dnl choice. It implements the "If we don't know, assume the worst" principle.
+ dnl However, when an operating system developer (on a platform which is not
+ dnl yet known to gnulib) builds packages for their platform, they want to
+ dnl expose, not hide, possible platform bugs; in this case,
+ dnl --enable-cross-guesses=risky is the appropriate choice.
+ dnl Sets the variables
+ dnl gl_cross_guess_normal (to be used when 'yes' is good and 'no' is bad),
+ dnl gl_cross_guess_inverted (to be used when 'no' is good and 'yes' is bad).
+ AC_ARG_ENABLE([cross-guesses],
+ [AS_HELP_STRING([--enable-cross-guesses={conservative|risky}],
+ [specify policy for cross-compilation guesses])],
+ [if test "x$enableval" != xconservative && test "x$enableval" != xrisky; then
+ AC_MSG_WARN([invalid argument supplied to --enable-cross-guesses])
+ enableval=conservative
+ fi
+ gl_cross_guesses="$enableval"],
+ [gl_cross_guesses=conservative])
+ if test $gl_cross_guesses = risky; then
+ gl_cross_guess_normal="guessing yes"
+ gl_cross_guess_inverted="guessing no"
+ else
+ gl_cross_guess_normal="guessing no"
+ gl_cross_guess_inverted="guessing yes"
+ fi
+ dnl Preparation for running test programs:
+ dnl Tell glibc to write diagnostics from -D_FORTIFY_SOURCE=2 to stderr, not
+ dnl to /dev/tty, so they can be redirected to log files. Such diagnostics
+ dnl arise e.g., in the macros gl_PRINTF_DIRECTIVE_N, gl_SNPRINTF_DIRECTIVE_N.
+ LIBC_FATAL_STDERR_=1
+ export LIBC_FATAL_STDERR_
+])
+
+# gl_MODULE_INDICATOR_INIT_VARIABLE([variablename])
+# gl_MODULE_INDICATOR_INIT_VARIABLE([variablename], [initialvalue])
+# initializes the shell variable that indicates the presence of the given module
+# as a C preprocessor expression.
+AC_DEFUN([gl_MODULE_INDICATOR_INIT_VARIABLE],
+[
+ GL_MODULE_INDICATOR_PREFIX[]_[$1]=m4_if([$2], , [0], [$2])
+ AC_SUBST(GL_MODULE_INDICATOR_PREFIX[]_[$1])
+])
+
+# gl_MODULE_INDICATOR_CONDITION
+# expands to a C preprocessor expression that evaluates to 1 or 0, depending
+# whether a gnulib module that has been requested shall be considered present
+# or not.
+m4_define([gl_MODULE_INDICATOR_CONDITION], [1])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE([modulename])
+# sets the shell variable that indicates the presence of the given module to
+# a C preprocessor expression that will evaluate to 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE],
+[
+ gl_MODULE_INDICATOR_SET_VARIABLE_AUX(
+ [GL_MODULE_INDICATOR_PREFIX[]_GNULIB_[]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___])],
+ [gl_MODULE_INDICATOR_CONDITION])
+])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE_AUX([variable])
+# modifies the shell variable to include the gl_MODULE_INDICATOR_CONDITION.
+# The shell variable's value is a C preprocessor expression that evaluates
+# to 0 or 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX],
+[
+ m4_if(m4_defn([gl_MODULE_INDICATOR_CONDITION]), [1],
+ [
+ dnl Simplify the expression VALUE || 1 to 1.
+ $1=1
+ ],
+ [gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([$1],
+ [gl_MODULE_INDICATOR_CONDITION])])
+])
+
+# gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR([variable], [condition])
+# modifies the shell variable to include the given condition. The shell
+# variable's value is a C preprocessor expression that evaluates to 0 or 1.
+AC_DEFUN([gl_MODULE_INDICATOR_SET_VARIABLE_AUX_OR],
+[
+ dnl Simplify the expression 1 || CONDITION to 1.
+ if test "$[]$1" != 1; then
+ dnl Simplify the expression 0 || CONDITION to CONDITION.
+ if test "$[]$1" = 0; then
+ $1=$2
+ else
+ $1="($[]$1 || $2)"
+ fi
+ fi
+])
+
+# gl_MODULE_INDICATOR([modulename])
+# defines a C macro indicating the presence of the given module
+# in a location where it can be used.
+# | Value | Value |
+# | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules: | 1 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: | 0 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module not present at all: | 0 | 0 |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR],
+[
+ AC_DEFINE_UNQUOTED([GNULIB_]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]),
+ [gl_MODULE_INDICATOR_CONDITION],
+ [Define to a C preprocessor expression that evaluates to 1 or 0,
+ depending whether the gnulib module $1 shall be considered present.])
+])
+
+# gl_MODULE_INDICATOR_FOR_TESTS([modulename])
+# defines a C macro indicating the presence of the given module
+# in lib or tests. This is useful to determine whether the module
+# should be tested.
+# | Value | Value |
+# | in lib/ | in tests/ |
+# --------------------------------------------+---------+-----------+
+# Module present among main modules: | 1 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module present among tests-related modules: | 1 | 1 |
+# --------------------------------------------+---------+-----------+
+# Module not present at all: | 0 | 0 |
+# --------------------------------------------+---------+-----------+
+AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS],
+[
+ AC_DEFINE([GNULIB_TEST_]m4_translit([[$1]],
+ [abcdefghijklmnopqrstuvwxyz./-],
+ [ABCDEFGHIJKLMNOPQRSTUVWXYZ___]), [1],
+ [Define to 1 when the gnulib module $1 should be tested.])
+])
+
+# gl_ASSERT_NO_GNULIB_POSIXCHECK
+# asserts that there will never be a need to #define GNULIB_POSIXCHECK.
+# and thereby enables an optimization of configure and config.h.
+# Used by Emacs.
+AC_DEFUN([gl_ASSERT_NO_GNULIB_POSIXCHECK],
+[
+ dnl Override gl_WARN_ON_USE_PREPARE.
+ dnl But hide this definition from 'aclocal'.
+ AC_DEFUN([gl_W][ARN_ON_USE_PREPARE], [])
+])
+
+# gl_ASSERT_NO_GNULIB_TESTS
+# asserts that there will be no gnulib tests in the scope of the configure.ac
+# and thereby enables an optimization of config.h.
+# Used by Emacs.
+AC_DEFUN([gl_ASSERT_NO_GNULIB_TESTS],
+[
+ dnl Override gl_MODULE_INDICATOR_FOR_TESTS.
+ AC_DEFUN([gl_MODULE_INDICATOR_FOR_TESTS], [])
+])
+
+# Test whether <features.h> exists.
+# Set HAVE_FEATURES_H.
+AC_DEFUN([gl_FEATURES_H],
+[
+ AC_CHECK_HEADERS_ONCE([features.h])
+ if test $ac_cv_header_features_h = yes; then
+ HAVE_FEATURES_H=1
+ else
+ HAVE_FEATURES_H=0
+ fi
+ AC_SUBST([HAVE_FEATURES_H])
+])
+
+# gl_PROG_CC_C99
+# Modifies the value of the shell variable CC in an attempt to make $CC
+# understand ISO C99 source code.
+AC_DEFUN([gl_PROG_CC_C99],
+[
+ dnl Just use AC_PROG_CC_C99.
+ dnl When AC_PROG_CC_C99 and AC_PROG_CC_STDC are used together, the substituted
+ dnl value of CC will contain the C99 enabling options twice. But this is only
+ dnl a cosmetic problem.
+ dnl With Autoconf >= 2.70, use AC_PROG_CC since it implies AC_PROG_CC_C99;
+ dnl this avoids a "warning: The macro `AC_PROG_CC_C99' is obsolete."
+ m4_version_prereq([2.70],
+ [AC_REQUIRE([AC_PROG_CC])],
+ [AC_REQUIRE([AC_PROG_CC_C99])])
+])
+
+# gl_PROG_AR_RANLIB
+# Determines the values for AR, ARFLAGS, RANLIB that fit with the compiler.
+# The user can set the variables AR, ARFLAGS, RANLIB if he wants to override
+# the values.
+AC_DEFUN([gl_PROG_AR_RANLIB],
+[
+ dnl Minix 3 comes with two toolchains: The Amsterdam Compiler Kit compiler
+ dnl as "cc", and GCC as "gcc". They have different object file formats and
+ dnl library formats. In particular, the GNU binutils programs ar and ranlib
+ dnl produce libraries that work only with gcc, not with cc.
+ AC_REQUIRE([AC_PROG_CC])
+ dnl The '][' hides this use from 'aclocal'.
+ AC_BEFORE([$0], [A][M_PROG_AR])
+ AC_CACHE_CHECK([for Minix Amsterdam compiler], [gl_cv_c_amsterdam_compiler],
+ [
+ AC_EGREP_CPP([Amsterdam],
+ [
+#ifdef __ACK__
+Amsterdam
+#endif
+ ],
+ [gl_cv_c_amsterdam_compiler=yes],
+ [gl_cv_c_amsterdam_compiler=no])
+ ])
+
+ dnl Don't compete with AM_PROG_AR's decision about AR/ARFLAGS if we are not
+ dnl building with __ACK__.
+ if test $gl_cv_c_amsterdam_compiler = yes; then
+ if test -z "$AR"; then
+ AR='cc -c.a'
+ fi
+ if test -z "$ARFLAGS"; then
+ ARFLAGS='-o'
+ fi
+ else
+ dnl AM_PROG_AR was added in automake v1.11.2. AM_PROG_AR does not AC_SUBST
+ dnl ARFLAGS variable (it is filed into Makefile.in directly by automake
+ dnl script on-demand, if not specified by ./configure of course).
+ dnl Don't AC_REQUIRE the AM_PROG_AR otherwise the code for __ACK__ above
+ dnl will be ignored. Also, pay attention to call AM_PROG_AR in else block
+ dnl because AM_PROG_AR is written so it could re-set AR variable even for
+ dnl __ACK__. It may seem like its easier to avoid calling the macro here,
+ dnl but we need to AC_SUBST both AR/ARFLAGS (thus those must have some good
+ dnl default value and automake should usually know them).
+ dnl
+ dnl The '][' hides this use from 'aclocal'.
+ m4_ifdef([A][M_PROG_AR], [A][M_PROG_AR], [:])
+ fi
+
+ dnl In case the code above has not helped with setting AR/ARFLAGS, use
+ dnl Automake-documented default values for AR and ARFLAGS, but prefer
+ dnl ${host}-ar over ar (useful for cross-compiling).
+ AC_CHECK_TOOL([AR], [ar], [ar])
+ if test -z "$ARFLAGS"; then
+ ARFLAGS='cr'
+ fi
+
+ AC_SUBST([AR])
+ AC_SUBST([ARFLAGS])
+ if test -z "$RANLIB"; then
+ if test $gl_cv_c_amsterdam_compiler = yes; then
+ RANLIB=':'
+ else
+ dnl Use the ranlib program if it is available.
+ AC_PROG_RANLIB
+ fi
+ fi
+ AC_SUBST([RANLIB])
+])
+
+# AC_C_RESTRICT
+# This definition is copied from post-2.70 Autoconf and overrides the
+# AC_C_RESTRICT macro from autoconf 2.60..2.70.
+m4_version_prereq([2.70.1], [], [
+AC_DEFUN([AC_C_RESTRICT],
+[AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict],
+ [ac_cv_c_restrict=no
+ # Put '__restrict__' first, to avoid problems with glibc and non-GCC; see:
+ # https://lists.gnu.org/archive/html/bug-autoconf/2016-02/msg00006.html
+ # Put 'restrict' last, because C++ lacks it.
+ for ac_kw in __restrict__ __restrict _Restrict restrict; do
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[typedef int *int_ptr;
+ int foo (int_ptr $ac_kw ip) { return ip[0]; }
+ int bar (int [$ac_kw]); /* Catch GCC bug 14050. */
+ int bar (int ip[$ac_kw]) { return ip[0]; }
+ ]],
+ [[int s[1];
+ int *$ac_kw t = s;
+ t[0] = 0;
+ return foo (t) + bar (t);
+ ]])],
+ [ac_cv_c_restrict=$ac_kw])
+ test "$ac_cv_c_restrict" != no && break
+ done
+ ])
+ AH_VERBATIM([restrict],
+[/* Define to the equivalent of the C99 'restrict' keyword, or to
+ nothing if this is not supported. Do not define if restrict is
+ supported only directly. */
+#undef restrict
+/* Work around a bug in older versions of Sun C++, which did not
+ #define __restrict__ or support _Restrict or __restrict__
+ even though the corresponding Sun C compiler ended up with
+ "#define restrict _Restrict" or "#define restrict __restrict__"
+ in the previous line. This workaround can be removed once
+ we assume Oracle Developer Studio 12.5 (2016) or later. */
+#if defined __SUNPRO_CC && !defined __RESTRICT && !defined __restrict__
+# define _Restrict
+# define __restrict__
+#endif])
+ case $ac_cv_c_restrict in
+ restrict) ;;
+ no) AC_DEFINE([restrict], []) ;;
+ *) AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
+ esac
+])# AC_C_RESTRICT
+])
+
+# gl_BIGENDIAN
+# is like AC_C_BIGENDIAN, except that it can be AC_REQUIREd.
+# Note that AC_REQUIRE([AC_C_BIGENDIAN]) does not work reliably because some
+# macros invoke AC_C_BIGENDIAN with arguments.
+AC_DEFUN([gl_BIGENDIAN],
+[
+ AC_C_BIGENDIAN
+])
+
+# A temporary file descriptor.
+# Must be less than 10, because dash 0.5.8 does not support redirections
+# with multi-digit file descriptors.
+m4_define([GL_TMP_FD], 9)
+
+# gl_SILENT(command)
+# executes command, but without the normal configure output.
+# This is useful when you want to invoke AC_CACHE_CHECK (or AC_CHECK_FUNC etc.)
+# inside another AC_CACHE_CHECK.
+AC_DEFUN([gl_SILENT],
+[
+ exec GL_TMP_FD>&AS_MESSAGE_FD AS_MESSAGE_FD>/dev/null
+ $1
+ exec AS_MESSAGE_FD>&GL_TMP_FD GL_TMP_FD>&-
+])
+
+# gl_CACHE_VAL_SILENT(cache-id, command-to-set-it)
+# is like AC_CACHE_VAL(cache-id, command-to-set-it), except that it does not
+# output a spurious "(cached)" mark in the midst of other configure output.
+# This macro should be used instead of AC_CACHE_VAL when it is not surrounded
+# by an AC_MSG_CHECKING/AC_MSG_RESULT pair.
+AC_DEFUN([gl_CACHE_VAL_SILENT],
+[
+ gl_SILENT([
+ AC_CACHE_VAL([$1], [$2])
+ ])
+])
+
+# gl_CONDITIONAL(conditional, condition)
+# is like AM_CONDITIONAL(conditional, condition), except that it does not
+# produce an error
+# configure: error: conditional "..." was never defined.
+# Usually this means the macro was only invoked conditionally.
+# when only invoked conditionally. Instead, in that case, both the _TRUE
+# and the _FALSE case are disabled.
+AC_DEFUN([gl_CONDITIONAL],
+[
+ pushdef([AC_CONFIG_COMMANDS_PRE], [:])dnl
+ AM_CONDITIONAL([$1], [$2])
+ popdef([AC_CONFIG_COMMANDS_PRE])dnl
+ if test -z "${[$1]_TRUE}" && test -z "${[$1]_FALSE}"; then
+ [$1]_TRUE='#'
+ [$1]_FALSE='#'
+ fi
+])
+
+# gl_CC_ALLOW_WARNINGS
+# sets and substitutes a variable GL_CFLAG_ALLOW_WARNINGS, to a $(CC) option
+# that reverts a preceding '-Werror' option, if available.
+# This is expected to be '-Wno-error' on gcc, clang (except clang/MSVC), xlclang
+# and empty otherwise.
+AC_DEFUN([gl_CC_ALLOW_WARNINGS],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ AC_CACHE_CHECK([for C compiler option to allow warnings],
+ [gl_cv_cc_wallow],
+ [rm -f conftest*
+ echo 'int dummy;' > conftest.c
+ AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -c conftest.c 2>conftest1.err]) >/dev/null
+ AC_TRY_COMMAND([${CC-cc} $CFLAGS $CPPFLAGS -Wno-error -c conftest.c 2>conftest2.err]) >/dev/null
+ dnl Test the number of error output lines, because AIX xlc accepts the
+ dnl option '-Wno-error', just to produce a warning
+ dnl "Option -Wno-error was incorrectly specified. The option will be ignored."
+ dnl afterwards.
+ if test $? = 0 && test `wc -l < conftest1.err` = `wc -l < conftest2.err`; then
+ gl_cv_cc_wallow='-Wno-error'
+ else
+ gl_cv_cc_wallow=none
+ fi
+ rm -f conftest*
+ ])
+ case "$gl_cv_cc_wallow" in
+ none) GL_CFLAG_ALLOW_WARNINGS='' ;;
+ *) GL_CFLAG_ALLOW_WARNINGS="$gl_cv_cc_wallow" ;;
+ esac
+ AC_SUBST([GL_CFLAG_ALLOW_WARNINGS])
+])
+
+# gl_CXX_ALLOW_WARNINGS
+# sets and substitutes a variable GL_CXXFLAG_ALLOW_WARNINGS, to a $(CC) option
+# that reverts a preceding '-Werror' option, if available.
+AC_DEFUN([gl_CXX_ALLOW_WARNINGS],
+[
+ dnl Requires AC_PROG_CXX or gl_PROG_ANSI_CXX.
+ if test -n "$CXX" && test "$CXX" != no; then
+ AC_CACHE_CHECK([for C++ compiler option to allow warnings],
+ [gl_cv_cxx_wallow],
+ [rm -f conftest*
+ echo 'int dummy;' > conftest.cc
+ AC_TRY_COMMAND([${CXX-c++} $CXXFLAGS $CPPFLAGS -c conftest.cc 2>conftest1.err]) >/dev/null
+ AC_TRY_COMMAND([${CXX-c++} $CXXFLAGS $CPPFLAGS -Wno-error -c conftest.cc 2>conftest2.err]) >/dev/null
+ dnl Test the number of error output lines, because AIX xlC accepts the
+ dnl option '-Wno-error', just to produce a warning
+ dnl "Option -Wno-error was incorrectly specified. The option will be ignored."
+ dnl afterwards.
+ if test $? = 0 && test `wc -l < conftest1.err` = `wc -l < conftest2.err`; then
+ gl_cv_cxx_wallow='-Wno-error'
+ else
+ gl_cv_cxx_wallow=none
+ fi
+ rm -f conftest*
+ ])
+ case "$gl_cv_cxx_wallow" in
+ none) GL_CXXFLAG_ALLOW_WARNINGS='' ;;
+ *) GL_CXXFLAG_ALLOW_WARNINGS="$gl_cv_cxx_wallow" ;;
+ esac
+ else
+ GL_CXXFLAG_ALLOW_WARNINGS=''
+ fi
+ AC_SUBST([GL_CXXFLAG_ALLOW_WARNINGS])
+])
+
+# gl_CC_GNULIB_WARNINGS
+# sets and substitutes a variable GL_CFLAG_GNULIB_WARNINGS, to a $(CC) option
+# set that enables or disables warnings as suitable for the Gnulib coding style.
+AC_DEFUN([gl_CC_GNULIB_WARNINGS],
+[
+ AC_REQUIRE([gl_CC_ALLOW_WARNINGS])
+ dnl Assume that the compiler supports -Wno-* options only if it also supports
+ dnl -Wno-error.
+ GL_CFLAG_GNULIB_WARNINGS=''
+ if test -n "$GL_CFLAG_ALLOW_WARNINGS"; then
+ dnl Enable these warning options:
+ dnl
+ dnl GCC clang
+ dnl -Wno-cast-qual >= 3 >= 3.9
+ dnl -Wno-conversion >= 3 >= 3.9
+ dnl -Wno-float-conversion >= 4.9 >= 3.9
+ dnl -Wno-float-equal >= 3 >= 3.9
+ dnl -Wimplicit-fallthrough >= 7 >= 3.9
+ dnl -Wno-pedantic >= 4.8 >= 3.9
+ dnl -Wno-sign-compare >= 3 >= 3.9
+ dnl -Wno-sign-conversion >= 4.3 >= 3.9
+ dnl -Wno-type-limits >= 4.3 >= 3.9
+ dnl -Wno-undef >= 3 >= 3.9
+ dnl -Wno-unsuffixed-float-constants >= 4.5
+ dnl -Wno-unused-function >= 3 >= 3.9
+ dnl -Wno-unused-parameter >= 3 >= 3.9
+ dnl
+ cat > conftest.c <<\EOF
+ #if __GNUC__ >= 3 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wno-cast-qual
+ -Wno-conversion
+ -Wno-float-equal
+ -Wno-sign-compare
+ -Wno-undef
+ -Wno-unused-function
+ -Wno-unused-parameter
+ #endif
+ #if __GNUC__ + (__GNUC_MINOR__ >= 9) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wno-float-conversion
+ #endif
+ #if __GNUC__ >= 7 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wimplicit-fallthrough
+ #endif
+ #if __GNUC__ + (__GNUC_MINOR__ >= 8) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wno-pedantic
+ #endif
+ #if __GNUC__ + (__GNUC_MINOR__ >= 3) > 4 || (__clang_major__ + (__clang_minor__ >= 9) > 3)
+ -Wno-sign-conversion
+ -Wno-type-limits
+ #endif
+ #if __GNUC__ + (__GNUC_MINOR__ >= 5) > 4
+ -Wno-unsuffixed-float-constants
+ #endif
+EOF
+ gl_command="$CC $CFLAGS $CPPFLAGS -E conftest.c > conftest.out"
+ if AC_TRY_EVAL([gl_command]); then
+ gl_options=`grep -v '#' conftest.out`
+ for word in $gl_options; do
+ GL_CFLAG_GNULIB_WARNINGS="$GL_CFLAG_GNULIB_WARNINGS $word"
+ done
+ fi
+ rm -f conftest.c conftest.out
+ fi
+ AC_SUBST([GL_CFLAG_GNULIB_WARNINGS])
+])
+
+dnl gl_CONDITIONAL_HEADER([foo.h])
+dnl takes a shell variable GL_GENERATE_FOO_H (with value true or false) as input
+dnl and produces
+dnl - an AC_SUBSTed variable FOO_H that is either a file name or empty, based
+dnl on whether GL_GENERATE_FOO_H is true or false,
+dnl - an Automake conditional GL_GENERATE_FOO_H that evaluates to the value of
+dnl the shell variable GL_GENERATE_FOO_H.
+AC_DEFUN([gl_CONDITIONAL_HEADER],
+[
+ m4_pushdef([gl_header_name], AS_TR_SH(m4_toupper($1)))
+ m4_pushdef([gl_generate_var], [GL_GENERATE_]AS_TR_SH(m4_toupper($1)))
+ m4_pushdef([gl_generate_cond], [GL_GENERATE_]AS_TR_SH(m4_toupper($1)))
+ case "$gl_generate_var" in
+ false) gl_header_name='' ;;
+ true)
+ dnl It is OK to use a .h file in lib/ from within tests/, but not vice
+ dnl versa.
+ if test -z "$gl_header_name"; then
+ gl_header_name="${gl_source_base_prefix}$1"
+ fi
+ ;;
+ *) echo "*** gl_generate_var is not set correctly" 1>&2; exit 1 ;;
+ esac
+ AC_SUBST(gl_header_name)
+ gl_CONDITIONAL(gl_generate_cond, [$gl_generate_var])
+ m4_popdef([gl_generate_cond])
+ m4_popdef([gl_generate_var])
+ m4_popdef([gl_header_name])
+])
+
+dnl Expands to some code for use in .c programs that, on native Windows, defines
+dnl the Microsoft deprecated alias function names to the underscore-prefixed
+dnl actual function names. With this macro, these function names are available
+dnl without linking with '-loldnames' and without generating warnings.
+dnl Usage: Use it after all system header files are included.
+dnl #include <...>
+dnl #include <...>
+dnl ]GL_MDA_DEFINES[
+dnl ...
+AC_DEFUN([GL_MDA_DEFINES],[
+AC_REQUIRE([_GL_MDA_DEFINES])
+[$gl_mda_defines]
+])
+AC_DEFUN([_GL_MDA_DEFINES],
+[gl_mda_defines='
+#if defined _WIN32 && !defined __CYGWIN__
+#define access _access
+#define chdir _chdir
+#define chmod _chmod
+#define close _close
+#define creat _creat
+#define dup _dup
+#define dup2 _dup2
+#define ecvt _ecvt
+#define execl _execl
+#define execle _execle
+#define execlp _execlp
+#define execv _execv
+#define execve _execve
+#define execvp _execvp
+#define execvpe _execvpe
+#define fcloseall _fcloseall
+#define fcvt _fcvt
+#define fdopen _fdopen
+#define fileno _fileno
+#define gcvt _gcvt
+#define getcwd _getcwd
+#define getpid _getpid
+#define getw _getw
+#define isatty _isatty
+#define j0 _j0
+#define j1 _j1
+#define jn _jn
+#define lfind _lfind
+#define lsearch _lsearch
+#define lseek _lseek
+#define memccpy _memccpy
+#define mkdir _mkdir
+#define mktemp _mktemp
+#define open _open
+#define putenv _putenv
+#define putw _putw
+#define read _read
+#define rmdir _rmdir
+#define strdup _strdup
+#define swab _swab
+#define tempnam _tempnam
+#define tzset _tzset
+#define umask _umask
+#define unlink _unlink
+#define utime _utime
+#define wcsdup _wcsdup
+#define write _write
+#define y0 _y0
+#define y1 _y1
+#define yn _yn
+#endif
+'
+])
diff --git a/m4/gnulib-comp.m4 b/m4/gnulib-comp.m4
new file mode 100644
index 0000000..8208b1e
--- /dev/null
+++ b/m4/gnulib-comp.m4
@@ -0,0 +1,412 @@
+# DO NOT EDIT! GENERATED AUTOMATICALLY!
+# Copyright (C) 2002-2022 Free Software Foundation, Inc.
+#
+# This file is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This file is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this file. If not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception to the GNU General Public License,
+# this file may be distributed as part of a program that
+# contains a configuration script generated by Autoconf, under
+# the same distribution terms as the rest of that program.
+#
+# Generated by gnulib-tool.
+#
+# This file represents the compiled summary of the specification in
+# gnulib-cache.m4. It lists the computed macro invocations that need
+# to be invoked from configure.ac.
+# In projects that use version control, this file can be treated like
+# other built files.
+
+
+# This macro should be invoked from ./configure.ac, in the section
+# "Checks for programs", right after AC_PROG_CC, and certainly before
+# any checks for libraries, header files, types and library functions.
+AC_DEFUN([gl_EARLY],
+[
+ m4_pattern_forbid([^gl_[A-Z]])dnl the gnulib macro namespace
+ m4_pattern_allow([^gl_ES$])dnl a valid locale name
+ m4_pattern_allow([^gl_LIBOBJS$])dnl a variable
+ m4_pattern_allow([^gl_LTLIBOBJS$])dnl a variable
+
+ # Pre-early section.
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+ AC_REQUIRE([gl_PROG_AR_RANLIB])
+
+ # Code from module absolute-header:
+ # Code from module announce-gen:
+ # Code from module c-ctype:
+ # Code from module c99:
+ # Code from module do-release-commit-and-tag:
+ # Code from module extensions:
+ # Code from module extern-inline:
+ # Code from module gen-header:
+ # Code from module gendocs:
+ # Code from module git-version-gen:
+ # Code from module gitlog-to-changelog:
+ # Code from module gnu-web-doc-update:
+ # Code from module gnumakefile:
+ # Code from module gnupload:
+ # Code from module include_next:
+ # Code from module intprops:
+ # Code from module lib-msvc-compat:
+ # Code from module lib-symbol-versions:
+ # Code from module lib-symbol-visibility:
+ # Code from module libc-config:
+ # Code from module limits-h:
+ # Code from module maintainer-makefile:
+ # Code from module manywarnings:
+ # Code from module minmax:
+ # Code from module multiarch:
+ # Code from module readme-release:
+ # Code from module snippet/_Noreturn:
+ # Code from module snippet/arg-nonnull:
+ # Code from module snippet/c++defs:
+ # Code from module snippet/warn-on-use:
+ # Code from module ssize_t:
+ # Code from module std-gnu11:
+ # Code from module stdbool:
+ # Code from module stddef:
+ # Code from module stdint:
+ # Code from module stdlib:
+ # Code from module string:
+ # Code from module strverscmp:
+ # Code from module sys_types:
+ # Code from module unistd:
+ # Code from module update-copyright:
+ # Code from module useless-if-before-free:
+ # Code from module valgrind-tests:
+ # Code from module vc-list-files:
+ # Code from module warnings:
+])
+
+# This macro should be invoked from ./configure.ac, in the section
+# "Check for header files, types and library functions".
+AC_DEFUN([gl_INIT],
+[
+ AM_CONDITIONAL([GL_COND_LIBTOOL], [true])
+ gl_cond_libtool=true
+ gl_m4_base='m4'
+ m4_pushdef([AC_LIBOBJ], m4_defn([gl_LIBOBJ]))
+ m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gl_REPLACE_FUNCS]))
+ m4_pushdef([AC_LIBSOURCES], m4_defn([gl_LIBSOURCES]))
+ m4_pushdef([gl_LIBSOURCES_LIST], [])
+ m4_pushdef([gl_LIBSOURCES_DIR], [])
+ m4_pushdef([GL_MACRO_PREFIX], [gl])
+ m4_pushdef([GL_MODULE_INDICATOR_PREFIX], [GL])
+ gl_COMMON
+ gl_source_base='lib/gl'
+ gl_source_base_prefix=
+ AC_REQUIRE([gl_EXTERN_INLINE])
+ # Autoconf 2.61a.99 and earlier don't support linking a file only
+ # in VPATH builds. But since GNUmakefile is for maintainer use
+ # only, it does not matter if we skip the link with older autoconf.
+ # Automake 1.10.1 and earlier try to remove GNUmakefile in non-VPATH
+ # builds, so use a shell variable to bypass this.
+ GNUmakefile=GNUmakefile
+ m4_if(m4_version_compare([2.61a.100],
+ m4_defn([m4_PACKAGE_VERSION])), [1], [],
+ [AC_CONFIG_LINKS([$GNUmakefile:$GNUmakefile], [],
+ [GNUmakefile=$GNUmakefile])])
+ gl_LD_OUTPUT_DEF
+ gl_LD_VERSION_SCRIPT
+ gl_VISIBILITY
+ gl___INLINE
+ gl_LIMITS_H
+ gl_CONDITIONAL_HEADER([limits.h])
+ AC_PROG_MKDIR_P
+ AC_CONFIG_COMMANDS_PRE([m4_ifdef([AH_HEADER],
+ [AC_SUBST([CONFIG_INCLUDE], m4_defn([AH_HEADER]))])])
+ AC_REQUIRE([AC_PROG_SED])
+ AC_REQUIRE([AC_PROG_GREP])
+ gl_MINMAX
+ gl_MULTIARCH
+ gt_TYPE_SSIZE_T
+ gl_STDBOOL_H
+ gl_CONDITIONAL_HEADER([stdbool.h])
+ AC_PROG_MKDIR_P
+ gl_STDDEF_H
+ gl_STDDEF_H_REQUIRE_DEFAULTS
+ gl_CONDITIONAL_HEADER([stddef.h])
+ AC_PROG_MKDIR_P
+ gl_STDINT_H
+ gl_CONDITIONAL_HEADER([stdint.h])
+ dnl Because of gl_REPLACE_LIMITS_H:
+ gl_CONDITIONAL_HEADER([limits.h])
+ AC_PROG_MKDIR_P
+ gl_STDLIB_H
+ gl_STDLIB_H_REQUIRE_DEFAULTS
+ AC_PROG_MKDIR_P
+ gl_STRING_H
+ gl_STRING_H_REQUIRE_DEFAULTS
+ AC_PROG_MKDIR_P
+ gl_FUNC_STRVERSCMP
+ gl_CONDITIONAL([GL_COND_OBJ_STRVERSCMP], [test $HAVE_STRVERSCMP = 0])
+ AM_COND_IF([GL_COND_OBJ_STRVERSCMP], [
+ gl_PREREQ_STRVERSCMP
+ ])
+ gl_STRING_MODULE_INDICATOR([strverscmp])
+ gl_SYS_TYPES_H
+ gl_SYS_TYPES_H_REQUIRE_DEFAULTS
+ AC_PROG_MKDIR_P
+ gl_UNISTD_H
+ gl_UNISTD_H_REQUIRE_DEFAULTS
+ AC_PROG_MKDIR_P
+ gl_VALGRIND_TESTS
+ # End of code from modules
+ m4_ifval(gl_LIBSOURCES_LIST, [
+ m4_syscmd([test ! -d ]m4_defn([gl_LIBSOURCES_DIR])[ ||
+ for gl_file in ]gl_LIBSOURCES_LIST[ ; do
+ if test ! -r ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file ; then
+ echo "missing file ]m4_defn([gl_LIBSOURCES_DIR])[/$gl_file" >&2
+ exit 1
+ fi
+ done])dnl
+ m4_if(m4_sysval, [0], [],
+ [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])])
+ ])
+ m4_popdef([GL_MODULE_INDICATOR_PREFIX])
+ m4_popdef([GL_MACRO_PREFIX])
+ m4_popdef([gl_LIBSOURCES_DIR])
+ m4_popdef([gl_LIBSOURCES_LIST])
+ m4_popdef([AC_LIBSOURCES])
+ m4_popdef([AC_REPLACE_FUNCS])
+ m4_popdef([AC_LIBOBJ])
+ AC_CONFIG_COMMANDS_PRE([
+ gl_libobjs=
+ gl_ltlibobjs=
+ gl_libobjdeps=
+ if test -n "$gl_LIBOBJS"; then
+ # Remove the extension.
+changequote(,)dnl
+ sed_drop_objext='s/\.o$//;s/\.obj$//'
+ sed_dirname1='s,//*,/,g'
+ sed_dirname2='s,\(.\)/$,\1,'
+ sed_dirname3='s,^[^/]*$,.,'
+ sed_dirname4='s,\(.\)/[^/]*$,\1,'
+ sed_basename1='s,.*/,,'
+changequote([, ])dnl
+ for i in `for i in $gl_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+ gl_libobjs="$gl_libobjs $i.$ac_objext"
+ gl_ltlibobjs="$gl_ltlibobjs $i.lo"
+ i_dir=`echo "$i" | sed -e "$sed_dirname1" -e "$sed_dirname2" -e "$sed_dirname3" -e "$sed_dirname4"`
+ i_base=`echo "$i" | sed -e "$sed_basename1"`
+ gl_libobjdeps="$gl_libobjdeps $i_dir/\$(DEPDIR)/$i_base.Plo"
+ done
+ fi
+ AC_SUBST([gl_LIBOBJS], [$gl_libobjs])
+ AC_SUBST([gl_LTLIBOBJS], [$gl_ltlibobjs])
+ AC_SUBST([gl_LIBOBJDEPS], [$gl_libobjdeps])
+ ])
+ gltests_libdeps=
+ gltests_ltlibdeps=
+ m4_pushdef([AC_LIBOBJ], m4_defn([gltests_LIBOBJ]))
+ m4_pushdef([AC_REPLACE_FUNCS], m4_defn([gltests_REPLACE_FUNCS]))
+ m4_pushdef([AC_LIBSOURCES], m4_defn([gltests_LIBSOURCES]))
+ m4_pushdef([gltests_LIBSOURCES_LIST], [])
+ m4_pushdef([gltests_LIBSOURCES_DIR], [])
+ m4_pushdef([GL_MACRO_PREFIX], [gltests])
+ m4_pushdef([GL_MODULE_INDICATOR_PREFIX], [GL])
+ gl_COMMON
+ AC_REQUIRE([gl_CC_ALLOW_WARNINGS])
+ AC_REQUIRE([gl_CXX_ALLOW_WARNINGS])
+ gl_source_base='lib/gl/tests'
+ gl_source_base_prefix=
+changequote(,)dnl
+ gltests_WITNESS=IN_`echo "${PACKAGE-$PACKAGE_TARNAME}" | LC_ALL=C tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ | LC_ALL=C sed -e 's/[^A-Z0-9_]/_/g'`_GNULIB_TESTS
+changequote([, ])dnl
+ AC_SUBST([gltests_WITNESS])
+ gl_module_indicator_condition=$gltests_WITNESS
+ m4_pushdef([gl_MODULE_INDICATOR_CONDITION], [$gl_module_indicator_condition])
+ gl_VALGRIND_TESTS
+ m4_popdef([gl_MODULE_INDICATOR_CONDITION])
+ m4_ifval(gltests_LIBSOURCES_LIST, [
+ m4_syscmd([test ! -d ]m4_defn([gltests_LIBSOURCES_DIR])[ ||
+ for gl_file in ]gltests_LIBSOURCES_LIST[ ; do
+ if test ! -r ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file ; then
+ echo "missing file ]m4_defn([gltests_LIBSOURCES_DIR])[/$gl_file" >&2
+ exit 1
+ fi
+ done])dnl
+ m4_if(m4_sysval, [0], [],
+ [AC_FATAL([expected source file, required through AC_LIBSOURCES, not found])])
+ ])
+ m4_popdef([GL_MODULE_INDICATOR_PREFIX])
+ m4_popdef([GL_MACRO_PREFIX])
+ m4_popdef([gltests_LIBSOURCES_DIR])
+ m4_popdef([gltests_LIBSOURCES_LIST])
+ m4_popdef([AC_LIBSOURCES])
+ m4_popdef([AC_REPLACE_FUNCS])
+ m4_popdef([AC_LIBOBJ])
+ AC_CONFIG_COMMANDS_PRE([
+ gltests_libobjs=
+ gltests_ltlibobjs=
+ gltests_libobjdeps=
+ if test -n "$gltests_LIBOBJS"; then
+ # Remove the extension.
+changequote(,)dnl
+ sed_drop_objext='s/\.o$//;s/\.obj$//'
+ sed_dirname1='s,//*,/,g'
+ sed_dirname2='s,\(.\)/$,\1,'
+ sed_dirname3='s,^[^/]*$,.,'
+ sed_dirname4='s,\(.\)/[^/]*$,\1,'
+ sed_basename1='s,.*/,,'
+changequote([, ])dnl
+ for i in `for i in $gltests_LIBOBJS; do echo "$i"; done | sed -e "$sed_drop_objext" | sort | uniq`; do
+ gltests_libobjs="$gltests_libobjs $i.$ac_objext"
+ gltests_ltlibobjs="$gltests_ltlibobjs $i.lo"
+ i_dir=`echo "$i" | sed -e "$sed_dirname1" -e "$sed_dirname2" -e "$sed_dirname3" -e "$sed_dirname4"`
+ i_base=`echo "$i" | sed -e "$sed_basename1"`
+ gltests_libobjdeps="$gltests_libobjdeps $i_dir/\$(DEPDIR)/$i_base.Plo"
+ done
+ fi
+ AC_SUBST([gltests_LIBOBJS], [$gltests_libobjs])
+ AC_SUBST([gltests_LTLIBOBJS], [$gltests_ltlibobjs])
+ AC_SUBST([gltests_LIBOBJDEPS], [$gltests_libobjdeps])
+ ])
+ AC_REQUIRE([gl_CC_GNULIB_WARNINGS])
+ LIBTESTS_LIBDEPS="$gltests_libdeps"
+ AC_SUBST([LIBTESTS_LIBDEPS])
+])
+
+# Like AC_LIBOBJ, except that the module name goes
+# into gl_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gl_LIBOBJ], [
+ AS_LITERAL_IF([$1], [gl_LIBSOURCES([$1.c])])dnl
+ gl_LIBOBJS="$gl_LIBOBJS $1.$ac_objext"
+])
+
+# Like AC_REPLACE_FUNCS, except that the module name goes
+# into gl_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gl_REPLACE_FUNCS], [
+ m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl
+ AC_CHECK_FUNCS([$1], , [gl_LIBOBJ($ac_func)])
+])
+
+# Like AC_LIBSOURCES, except the directory where the source file is
+# expected is derived from the gnulib-tool parameterization,
+# and alloca is special cased (for the alloca-opt module).
+# We could also entirely rely on EXTRA_lib..._SOURCES.
+AC_DEFUN([gl_LIBSOURCES], [
+ m4_foreach([_gl_NAME], [$1], [
+ m4_if(_gl_NAME, [alloca.c], [], [
+ m4_define([gl_LIBSOURCES_DIR], [lib/gl])
+ m4_append([gl_LIBSOURCES_LIST], _gl_NAME, [ ])
+ ])
+ ])
+])
+
+# Like AC_LIBOBJ, except that the module name goes
+# into gltests_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gltests_LIBOBJ], [
+ AS_LITERAL_IF([$1], [gltests_LIBSOURCES([$1.c])])dnl
+ gltests_LIBOBJS="$gltests_LIBOBJS $1.$ac_objext"
+])
+
+# Like AC_REPLACE_FUNCS, except that the module name goes
+# into gltests_LIBOBJS instead of into LIBOBJS.
+AC_DEFUN([gltests_REPLACE_FUNCS], [
+ m4_foreach_w([gl_NAME], [$1], [AC_LIBSOURCES(gl_NAME[.c])])dnl
+ AC_CHECK_FUNCS([$1], , [gltests_LIBOBJ($ac_func)])
+])
+
+# Like AC_LIBSOURCES, except the directory where the source file is
+# expected is derived from the gnulib-tool parameterization,
+# and alloca is special cased (for the alloca-opt module).
+# We could also entirely rely on EXTRA_lib..._SOURCES.
+AC_DEFUN([gltests_LIBSOURCES], [
+ m4_foreach([_gl_NAME], [$1], [
+ m4_if(_gl_NAME, [alloca.c], [], [
+ m4_define([gltests_LIBSOURCES_DIR], [lib/gl/tests])
+ m4_append([gltests_LIBSOURCES_LIST], _gl_NAME, [ ])
+ ])
+ ])
+])
+
+# This macro records the list of files which have been installed by
+# gnulib-tool and may be removed by future gnulib-tool invocations.
+AC_DEFUN([gl_FILE_LIST], [
+ build-aux/announce-gen
+ build-aux/do-release-commit-and-tag
+ build-aux/gendocs.sh
+ build-aux/git-version-gen
+ build-aux/gitlog-to-changelog
+ build-aux/gnu-web-doc-update
+ build-aux/gnupload
+ build-aux/update-copyright
+ build-aux/useless-if-before-free
+ build-aux/vc-list-files
+ doc/gendocs_template
+ doc/gendocs_template_min
+ lib/_Noreturn.h
+ lib/arg-nonnull.h
+ lib/c++defs.h
+ lib/c-ctype.c
+ lib/c-ctype.h
+ lib/cdefs.h
+ lib/intprops-internal.h
+ lib/intprops.h
+ lib/libc-config.h
+ lib/limits.in.h
+ lib/minmax.h
+ lib/stdbool.in.h
+ lib/stddef.in.h
+ lib/stdint.in.h
+ lib/stdlib.in.h
+ lib/string.in.h
+ lib/strverscmp.c
+ lib/sys_types.in.h
+ lib/unistd.c
+ lib/unistd.in.h
+ lib/warn-on-use.h
+ m4/00gnulib.m4
+ m4/__inline.m4
+ m4/absolute-header.m4
+ m4/extensions.m4
+ m4/extern-inline.m4
+ m4/gnulib-common.m4
+ m4/include_next.m4
+ m4/ld-output-def.m4
+ m4/ld-version-script.m4
+ m4/limits-h.m4
+ m4/manywarnings-c++.m4
+ m4/manywarnings.m4
+ m4/minmax.m4
+ m4/multiarch.m4
+ m4/off_t.m4
+ m4/pid_t.m4
+ m4/ssize_t.m4
+ m4/std-gnu11.m4
+ m4/stdbool.m4
+ m4/stddef_h.m4
+ m4/stdint.m4
+ m4/stdlib_h.m4
+ m4/string_h.m4
+ m4/strverscmp.m4
+ m4/sys_types_h.m4
+ m4/unistd_h.m4
+ m4/valgrind-tests.m4
+ m4/visibility.m4
+ m4/warn-on-use.m4
+ m4/warnings.m4
+ m4/wchar_t.m4
+ m4/wint_t.m4
+ m4/zzgnulib.m4
+ tests=lib/_Noreturn.h
+ tests=lib/arg-nonnull.h
+ tests=lib/c++defs.h
+ tests=lib/dummy.c
+ tests=lib/warn-on-use.h
+ top/GNUmakefile
+ top/README-release
+ top/maint.mk
+])
diff --git a/m4/include_next.m4 b/m4/include_next.m4
new file mode 100644
index 0000000..a9247f6
--- /dev/null
+++ b/m4/include_next.m4
@@ -0,0 +1,224 @@
+# include_next.m4 serial 26
+dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert and Derek Price.
+
+dnl Sets INCLUDE_NEXT, INCLUDE_NEXT_AS_FIRST_DIRECTIVE, PRAGMA_SYSTEM_HEADER,
+dnl and PRAGMA_COLUMNS.
+dnl
+dnl INCLUDE_NEXT expands to 'include_next' if the compiler supports it, or to
+dnl 'include' otherwise.
+dnl
+dnl INCLUDE_NEXT_AS_FIRST_DIRECTIVE expands to 'include_next' if the compiler
+dnl supports it in the special case that it is the first include directive in
+dnl the given file, or to 'include' otherwise.
+dnl
+dnl PRAGMA_SYSTEM_HEADER can be used in files that contain #include_next,
+dnl so as to avoid GCC warnings when the gcc option -pedantic is used.
+dnl '#pragma GCC system_header' has the same effect as if the file was found
+dnl through the include search path specified with '-isystem' options (as
+dnl opposed to the search path specified with '-I' options). Namely, gcc
+dnl does not warn about some things, and on some systems (Solaris and Interix)
+dnl __STDC__ evaluates to 0 instead of to 1. The latter is an undesired side
+dnl effect; we are therefore careful to use 'defined __STDC__' or '1' instead
+dnl of plain '__STDC__'.
+dnl
+dnl PRAGMA_COLUMNS can be used in files that override system header files, so
+dnl as to avoid compilation errors on HP NonStop systems when the gnulib file
+dnl is included by a system header file that does a "#pragma COLUMNS 80" (which
+dnl has the effect of truncating the lines of that file and all files that it
+dnl includes to 80 columns) and the gnulib file has lines longer than 80
+dnl columns.
+
+AC_DEFUN([gl_INCLUDE_NEXT],
+[
+ AC_LANG_PREPROC_REQUIRE()
+ AC_CACHE_CHECK([whether the preprocessor supports include_next],
+ [gl_cv_have_include_next],
+ [rm -rf conftestd1a conftestd1b conftestd2
+ mkdir conftestd1a conftestd1b conftestd2
+ dnl IBM C 9.0, 10.1 (original versions, prior to the 2009-01 updates) on
+ dnl AIX 6.1 support include_next when used as first preprocessor directive
+ dnl in a file, but not when preceded by another include directive. Check
+ dnl for this bug by including <stdio.h>.
+ dnl Additionally, with this same compiler, include_next is a no-op when
+ dnl used in a header file that was included by specifying its absolute
+ dnl file name. Despite these two bugs, include_next is used in the
+ dnl compiler's <math.h>. By virtue of the second bug, we need to use
+ dnl include_next as well in this case.
+ cat <<EOF > conftestd1a/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include_next <conftest.h>
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+ cat <<EOF > conftestd1b/conftest.h
+#define DEFINED_IN_CONFTESTD1
+#include <stdio.h>
+#include_next <conftest.h>
+#ifdef DEFINED_IN_CONFTESTD2
+int foo;
+#else
+#error "include_next doesn't work"
+#endif
+EOF
+ cat <<EOF > conftestd2/conftest.h
+#ifndef DEFINED_IN_CONFTESTD1
+#error "include_next test doesn't work"
+#endif
+#define DEFINED_IN_CONFTESTD2
+EOF
+ gl_save_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1b -Iconftestd2"
+dnl We intentionally avoid using AC_LANG_SOURCE here.
+ AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include <conftest.h>]],
+ [gl_cv_have_include_next=yes],
+ [CPPFLAGS="$gl_save_CPPFLAGS -Iconftestd1a -Iconftestd2"
+ AC_COMPILE_IFELSE([AC_LANG_DEFINES_PROVIDED[#include <conftest.h>]],
+ [gl_cv_have_include_next=buggy],
+ [gl_cv_have_include_next=no])
+ ])
+ CPPFLAGS="$gl_save_CPPFLAGS"
+ rm -rf conftestd1a conftestd1b conftestd2
+ ])
+ PRAGMA_SYSTEM_HEADER=
+ if test $gl_cv_have_include_next = yes; then
+ INCLUDE_NEXT=include_next
+ INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+ if test -n "$GCC"; then
+ PRAGMA_SYSTEM_HEADER='#pragma GCC system_header'
+ fi
+ else
+ if test $gl_cv_have_include_next = buggy; then
+ INCLUDE_NEXT=include
+ INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include_next
+ else
+ INCLUDE_NEXT=include
+ INCLUDE_NEXT_AS_FIRST_DIRECTIVE=include
+ fi
+ fi
+ AC_SUBST([INCLUDE_NEXT])
+ AC_SUBST([INCLUDE_NEXT_AS_FIRST_DIRECTIVE])
+ AC_SUBST([PRAGMA_SYSTEM_HEADER])
+
+ dnl HP NonStop systems, which define __TANDEM, limit the line length
+ dnl after including some system header files.
+ AC_CACHE_CHECK([whether source code line length is unlimited],
+ [gl_cv_source_line_length_unlimited],
+ [AC_EGREP_CPP([choke me],
+ [
+#ifdef __TANDEM
+choke me
+#endif
+ ],
+ [gl_cv_source_line_length_unlimited=no],
+ [gl_cv_source_line_length_unlimited=yes])
+ ])
+ if test $gl_cv_source_line_length_unlimited = no; then
+ PRAGMA_COLUMNS="#pragma COLUMNS 10000"
+ else
+ PRAGMA_COLUMNS=
+ fi
+ AC_SUBST([PRAGMA_COLUMNS])
+])
+
+# gl_CHECK_NEXT_HEADERS(HEADER1 HEADER2 ...)
+# ------------------------------------------
+# For each arg foo.h, if #include_next works, define NEXT_FOO_H to be
+# '<foo.h>'; otherwise define it to be
+# '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
+# Also, if #include_next works as first preprocessing directive in a file,
+# define NEXT_AS_FIRST_DIRECTIVE_FOO_H to be '<foo.h>'; otherwise define it to
+# be
+# '"///usr/include/foo.h"', or whatever other absolute file name is suitable.
+# That way, a header file with the following line:
+# #@INCLUDE_NEXT@ @NEXT_FOO_H@
+# or
+# #@INCLUDE_NEXT_AS_FIRST_DIRECTIVE@ @NEXT_AS_FIRST_DIRECTIVE_FOO_H@
+# behaves (after sed substitution) as if it contained
+# #include_next <foo.h>
+# even if the compiler does not support include_next.
+# The three "///" are to pacify Sun C 5.8, which otherwise would say
+# "warning: #include of /usr/include/... may be non-portable".
+# Use '""', not '<>', so that the /// cannot be confused with a C99 comment.
+# Note: This macro assumes that the header file is not empty after
+# preprocessing, i.e. it does not only define preprocessor macros but also
+# provides some type/enum definitions or function/variable declarations.
+#
+# This macro also checks whether each header exists, by invoking
+# AC_CHECK_HEADERS_ONCE or AC_CHECK_HEADERS on each argument.
+AC_DEFUN([gl_CHECK_NEXT_HEADERS],
+[
+ gl_NEXT_HEADERS_INTERNAL([$1], [check])
+])
+
+# gl_NEXT_HEADERS(HEADER1 HEADER2 ...)
+# ------------------------------------
+# Like gl_CHECK_NEXT_HEADERS, except do not check whether the headers exist.
+# This is suitable for headers like <stddef.h> that are standardized by C89
+# and therefore can be assumed to exist.
+AC_DEFUN([gl_NEXT_HEADERS],
+[
+ gl_NEXT_HEADERS_INTERNAL([$1], [assume])
+])
+
+# The guts of gl_CHECK_NEXT_HEADERS and gl_NEXT_HEADERS.
+AC_DEFUN([gl_NEXT_HEADERS_INTERNAL],
+[
+ AC_REQUIRE([gl_INCLUDE_NEXT])
+ AC_REQUIRE([AC_CANONICAL_HOST])
+
+ m4_if([$2], [check],
+ [AC_CHECK_HEADERS_ONCE([$1])
+ ])
+
+ m4_foreach_w([gl_HEADER_NAME], [$1],
+ [AS_VAR_PUSHDEF([gl_next_header],
+ [gl_cv_next_]m4_defn([gl_HEADER_NAME]))
+ if test $gl_cv_have_include_next = yes; then
+ AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+ else
+ AC_CACHE_CHECK(
+ [absolute name of <]m4_defn([gl_HEADER_NAME])[>],
+ [gl_next_header],
+ [m4_if([$2], [check],
+ [AS_VAR_PUSHDEF([gl_header_exists],
+ [ac_cv_header_]m4_defn([gl_HEADER_NAME]))
+ if test AS_VAR_GET([gl_header_exists]) = yes; then
+ AS_VAR_POPDEF([gl_header_exists])
+ ])
+ gl_ABSOLUTE_HEADER_ONE(gl_HEADER_NAME)
+ AS_VAR_COPY([gl_header], [gl_cv_absolute_]AS_TR_SH(gl_HEADER_NAME))
+ AS_VAR_SET([gl_next_header], ['"'$gl_header'"'])
+ m4_if([$2], [check],
+ [else
+ AS_VAR_SET([gl_next_header], ['<'gl_HEADER_NAME'>'])
+ fi
+ ])
+ ])
+ fi
+ AC_SUBST(
+ AS_TR_CPP([NEXT_]m4_defn([gl_HEADER_NAME])),
+ [AS_VAR_GET([gl_next_header])])
+ if test $gl_cv_have_include_next = yes || test $gl_cv_have_include_next = buggy; then
+ # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include_next'
+ gl_next_as_first_directive='<'gl_HEADER_NAME'>'
+ else
+ # INCLUDE_NEXT_AS_FIRST_DIRECTIVE='include'
+ gl_next_as_first_directive=AS_VAR_GET([gl_next_header])
+ fi
+ AC_SUBST(
+ AS_TR_CPP([NEXT_AS_FIRST_DIRECTIVE_]m4_defn([gl_HEADER_NAME])),
+ [$gl_next_as_first_directive])
+ AS_VAR_POPDEF([gl_next_header])])
+])
+
+# Autoconf 2.68 added warnings for our use of AC_COMPILE_IFELSE;
+# this fallback is safe for all earlier autoconf versions.
+m4_define_default([AC_LANG_DEFINES_PROVIDED])
diff --git a/m4/ld-output-def.m4 b/m4/ld-output-def.m4
new file mode 100644
index 0000000..b3e95af
--- /dev/null
+++ b/m4/ld-output-def.m4
@@ -0,0 +1,29 @@
+# ld-output-def.m4 serial 3
+dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Simon Josefsson
+
+# gl_LD_OUTPUT_DEF()
+# -------------
+# Check if linker supports -Wl,--output-def and define automake
+# conditional HAVE_LD_OUTPUT_DEF if it is.
+AC_DEFUN([gl_LD_OUTPUT_DEF],
+[
+ AC_CACHE_CHECK([if gcc/ld supports -Wl,--output-def],
+ [gl_cv_ld_output_def],
+ [if test "$enable_shared" = no; then
+ gl_cv_ld_output_def="not needed, shared libraries are disabled"
+ else
+ gl_ldflags_save=$LDFLAGS
+ LDFLAGS="-Wl,--output-def,conftest.def"
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]])],
+ [gl_cv_ld_output_def=yes],
+ [gl_cv_ld_output_def=no])
+ rm -f conftest.def
+ LDFLAGS="$gl_ldflags_save"
+ fi])
+ AM_CONDITIONAL([HAVE_LD_OUTPUT_DEF], test "x$gl_cv_ld_output_def" = "xyes")
+])
diff --git a/m4/ld-version-script.m4 b/m4/ld-version-script.m4
new file mode 100644
index 0000000..bf81b49
--- /dev/null
+++ b/m4/ld-version-script.m4
@@ -0,0 +1,48 @@
+# ld-version-script.m4 serial 5
+dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Simon Josefsson
+
+# FIXME: The test below returns a false positive for mingw
+# cross-compiles, 'local:' statements does not reduce number of
+# exported symbols in a DLL. Use --disable-ld-version-script to work
+# around the problem.
+
+# gl_LD_VERSION_SCRIPT
+# --------------------
+# Check if LD supports linker scripts, and define automake conditional
+# HAVE_LD_VERSION_SCRIPT if so.
+AC_DEFUN([gl_LD_VERSION_SCRIPT],
+[
+ AC_ARG_ENABLE([ld-version-script],
+ [AS_HELP_STRING([--enable-ld-version-script],
+ [enable linker version script (default is enabled when possible)])],
+ [have_ld_version_script=$enableval],
+ [AC_CACHE_CHECK([if LD -Wl,--version-script works],
+ [gl_cv_sys_ld_version_script],
+ [gl_cv_sys_ld_version_script=no
+ save_LDFLAGS=$LDFLAGS
+ LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map"
+ echo foo >conftest.map
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+ [],
+ [cat > conftest.map <<EOF
+VERS_1 {
+ global: sym;
+};
+
+VERS_2 {
+ global: sym;
+} VERS_1;
+EOF
+ AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
+ [gl_cv_sys_ld_version_script=yes])])
+ rm -f conftest.map
+ LDFLAGS=$save_LDFLAGS])
+ have_ld_version_script=$gl_cv_sys_ld_version_script])
+ AM_CONDITIONAL([HAVE_LD_VERSION_SCRIPT],
+ [test "$have_ld_version_script" = yes])
+])
diff --git a/m4/libtool.m4 b/m4/libtool.m4
index ee80844..c4c0294 100644
--- a/m4/libtool.m4
+++ b/m4/libtool.m4
@@ -1041,8 +1041,8 @@ int forced_loaded() { return 2;}
_LT_EOF
echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&AS_MESSAGE_LOG_FD
$LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&AS_MESSAGE_LOG_FD
- echo "$AR cru libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
- $AR cru libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
+ echo "$AR cr libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
+ $AR cr libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
echo "$RANLIB libconftest.a" >&AS_MESSAGE_LOG_FD
$RANLIB libconftest.a 2>&AS_MESSAGE_LOG_FD
cat > conftest.c << _LT_EOF
@@ -1071,11 +1071,11 @@ _LT_EOF
# to the OS version, if on x86, and 10.4, the deployment
# target defaults to 10.4. Don't you love it?
case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
- 10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
+ 10.0,*86*-darwin8*|10.0,*-darwin[[912]]*)
_lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
10.[[012]][[,.]]*)
_lt_dar_allow_undefined='$wl-flat_namespace $wl-undefined ${wl}suppress' ;;
- 10.*)
+ 10.*|11.*)
_lt_dar_allow_undefined='$wl-undefined ${wl}dynamic_lookup' ;;
esac
;;
@@ -1492,7 +1492,7 @@ need_locks=$enable_libtool_lock
m4_defun([_LT_PROG_AR],
[AC_CHECK_TOOLS(AR, [ar], false)
: ${AR=ar}
-: ${AR_FLAGS=cru}
+: ${AR_FLAGS=cr}
_LT_DECL([], [AR], [1], [The archiver])
_LT_DECL([], [AR_FLAGS], [1], [Flags to create an archive])
@@ -4063,7 +4063,8 @@ _LT_EOF
if AC_TRY_EVAL(ac_compile); then
# Now try to grab the symbols.
nlist=conftest.nm
- if AC_TRY_EVAL(NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) && test -s "$nlist"; then
+ $ECHO "$as_me:$LINENO: $NM conftest.$ac_objext | $lt_cv_sys_global_symbol_pipe > $nlist" >&AS_MESSAGE_LOG_FD
+ if eval "$NM" conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist 2>&AS_MESSAGE_LOG_FD && test -s "$nlist"; then
# Try sorting and uniquifying the output.
if sort "$nlist" | uniq > "$nlist"T; then
mv -f "$nlist"T "$nlist"
@@ -4703,6 +4704,12 @@ m4_if([$1], [CXX], [
_LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
_LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
;;
+ # flang / f18. f95 an alias for gfortran or flang on Debian
+ flang* | f18* | f95*)
+ _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
+ _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
+ _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
+ ;;
# icc used to be incompatible with GCC.
# ICC 10 doesn't accept -KPIC any more.
icc* | ifort*)
@@ -6438,7 +6445,7 @@ if test yes != "$_lt_caught_CXX_error"; then
# Commands to make compiler produce verbose output that lists
# what "hidden" libraries, object files and flags are used when
# linking a shared library.
- output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
else
GXX=no
@@ -6813,7 +6820,7 @@ if test yes != "$_lt_caught_CXX_error"; then
# explicitly linking system object files so we need to strip them
# from the output so that they don't get included in the library
# dependencies.
- output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+ output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP " \-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
;;
*)
if test yes = "$GXX"; then
@@ -6878,7 +6885,7 @@ if test yes != "$_lt_caught_CXX_error"; then
# explicitly linking system object files so we need to strip them
# from the output so that they don't get included in the library
# dependencies.
- output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
+ output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP " \-L"`; list= ; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
;;
*)
if test yes = "$GXX"; then
@@ -7217,7 +7224,7 @@ if test yes != "$_lt_caught_CXX_error"; then
# Commands to make compiler produce verbose output that lists
# what "hidden" libraries, object files and flags are used when
# linking a shared library.
- output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
else
# FIXME: insert proper C++ library support
@@ -7301,7 +7308,7 @@ if test yes != "$_lt_caught_CXX_error"; then
# Commands to make compiler produce verbose output that lists
# what "hidden" libraries, object files and flags are used when
# linking a shared library.
- output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+ output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
else
# g++ 2.7 appears to require '-G' NOT '-shared' on this
# platform.
@@ -7312,7 +7319,7 @@ if test yes != "$_lt_caught_CXX_error"; then
# Commands to make compiler produce verbose output that lists
# what "hidden" libraries, object files and flags are used when
# linking a shared library.
- output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
+ output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP " \-L"'
fi
_LT_TAGVAR(hardcode_libdir_flag_spec, $1)='$wl-R $wl$libdir'
diff --git a/m4/limits-h.m4 b/m4/limits-h.m4
new file mode 100644
index 0000000..5d5a5bf
--- /dev/null
+++ b/m4/limits-h.m4
@@ -0,0 +1,41 @@
+dnl Check whether limits.h has needed features.
+
+dnl Copyright 2016-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert.
+
+AC_DEFUN_ONCE([gl_LIMITS_H],
+[
+ gl_CHECK_NEXT_HEADERS([limits.h])
+
+ AC_CACHE_CHECK([whether limits.h has WORD_BIT, BOOL_WIDTH etc.],
+ [gl_cv_header_limits_width],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+ #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+ #endif
+ #include <limits.h>
+ long long llm = LLONG_MAX;
+ int wb = WORD_BIT;
+ int ullw = ULLONG_WIDTH;
+ int bw = BOOL_WIDTH;
+ ]])],
+ [gl_cv_header_limits_width=yes],
+ [gl_cv_header_limits_width=no])])
+ if test "$gl_cv_header_limits_width" = yes; then
+ GL_GENERATE_LIMITS_H=false
+ else
+ GL_GENERATE_LIMITS_H=true
+ fi
+])
+
+dnl Unconditionally enables the replacement of <limits.h>.
+AC_DEFUN([gl_REPLACE_LIMITS_H],
+[
+ AC_REQUIRE([gl_LIMITS_H])
+ GL_GENERATE_LIMITS_H=true
+])
diff --git a/m4/manywarnings.m4 b/m4/manywarnings.m4
new file mode 100644
index 0000000..f4b5853
--- /dev/null
+++ b/m4/manywarnings.m4
@@ -0,0 +1,211 @@
+# manywarnings.m4 serial 23
+dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Simon Josefsson
+
+# gl_MANYWARN_COMPLEMENT(OUTVAR, LISTVAR, REMOVEVAR)
+# --------------------------------------------------
+# Copy LISTVAR to OUTVAR except for the entries in REMOVEVAR.
+# Elements separated by whitespace. In set logic terms, the function
+# does OUTVAR = LISTVAR \ REMOVEVAR.
+AC_DEFUN([gl_MANYWARN_COMPLEMENT],
+[
+ gl_warn_set=
+ set x $2; shift
+ for gl_warn_item
+ do
+ case " $3 " in
+ *" $gl_warn_item "*)
+ ;;
+ *)
+ gl_AS_VAR_APPEND([gl_warn_set], [" $gl_warn_item"])
+ ;;
+ esac
+ done
+ $1=$gl_warn_set
+])
+
+# gl_MANYWARN_ALL_GCC(VARIABLE)
+# -----------------------------
+# Add all documented GCC warning parameters to variable VARIABLE.
+# Note that you need to test them using gl_WARN_ADD if you want to
+# make sure your gcc understands it.
+#
+# The effects of this macro depend on the current language (_AC_LANG).
+AC_DEFUN([gl_MANYWARN_ALL_GCC],
+[_AC_LANG_DISPATCH([$0], _AC_LANG, $@)])
+
+# Specialization for _AC_LANG = C.
+AC_DEFUN([gl_MANYWARN_ALL_GCC(C)],
+[
+ AC_LANG_PUSH([C])
+
+ dnl First, check for some issues that only occur when combining multiple
+ dnl gcc warning categories.
+ AC_REQUIRE([AC_PROG_CC])
+ if test -n "$GCC"; then
+
+ dnl Check if -Wextra -Werror -Wno-missing-field-initializers is supported
+ dnl with the current $CC $CFLAGS $CPPFLAGS.
+ AC_CACHE_CHECK([whether -Wno-missing-field-initializers is supported],
+ [gl_cv_cc_nomfi_supported],
+ [gl_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Wextra -Werror -Wno-missing-field-initializers"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[]], [[]])],
+ [gl_cv_cc_nomfi_supported=yes],
+ [gl_cv_cc_nomfi_supported=no])
+ CFLAGS="$gl_save_CFLAGS"
+ ])
+
+ if test "$gl_cv_cc_nomfi_supported" = yes; then
+ dnl Now check whether -Wno-missing-field-initializers is needed
+ dnl for the { 0, } construct.
+ AC_CACHE_CHECK([whether -Wno-missing-field-initializers is needed],
+ [gl_cv_cc_nomfi_needed],
+ [gl_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Wextra -Werror"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[int f (void)
+ {
+ typedef struct { int a; int b; } s_t;
+ s_t s1 = { 0, };
+ return s1.b;
+ }
+ ]],
+ [[]])],
+ [gl_cv_cc_nomfi_needed=no],
+ [gl_cv_cc_nomfi_needed=yes])
+ CFLAGS="$gl_save_CFLAGS"
+ ])
+ fi
+
+ dnl Next, check if -Werror -Wuninitialized is useful with the
+ dnl user's choice of $CFLAGS; some versions of gcc warn that it
+ dnl has no effect if -O is not also used
+ AC_CACHE_CHECK([whether -Wuninitialized is supported],
+ [gl_cv_cc_uninitialized_supported],
+ [gl_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror -Wuninitialized"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[]], [[]])],
+ [gl_cv_cc_uninitialized_supported=yes],
+ [gl_cv_cc_uninitialized_supported=no])
+ CFLAGS="$gl_save_CFLAGS"
+ ])
+
+ fi
+
+ # List all gcc warning categories.
+ # To compare this list to your installed GCC's, run this Bash command:
+ #
+ # comm -3 \
+ # <((sed -n 's/^ *\(-[^ 0-9][^ ]*\).*/\1/p' manywarnings.m4; \
+ # awk '/^[^#]/ {print $1}' ../build-aux/gcc-warning.spec) | sort) \
+ # <(LC_ALL=C gcc --help=warnings | sed -n 's/^ \(-[^ ]*\) .*/\1/p' | sort)
+
+ $1=
+ for gl_manywarn_item in -fanalyzer -fno-common \
+ -Wall \
+ -Warith-conversion \
+ -Wbad-function-cast \
+ -Wcast-align=strict \
+ -Wdate-time \
+ -Wdisabled-optimization \
+ -Wdouble-promotion \
+ -Wduplicated-branches \
+ -Wduplicated-cond \
+ -Wextra \
+ -Wformat-signedness \
+ -Winit-self \
+ -Winline \
+ -Winvalid-pch \
+ -Wlogical-op \
+ -Wmissing-declarations \
+ -Wmissing-include-dirs \
+ -Wmissing-prototypes \
+ -Wnested-externs \
+ -Wnull-dereference \
+ -Wold-style-definition \
+ -Wopenmp-simd \
+ -Woverlength-strings \
+ -Wpacked \
+ -Wpointer-arith \
+ -Wshadow \
+ -Wstack-protector \
+ -Wstrict-overflow \
+ -Wstrict-prototypes \
+ -Wsuggest-attribute=cold \
+ -Wsuggest-attribute=const \
+ -Wsuggest-attribute=format \
+ -Wsuggest-attribute=malloc \
+ -Wsuggest-attribute=noreturn \
+ -Wsuggest-attribute=pure \
+ -Wsuggest-final-methods \
+ -Wsuggest-final-types \
+ -Wsync-nand \
+ -Wsystem-headers \
+ -Wtrampolines \
+ -Wuninitialized \
+ -Wunknown-pragmas \
+ -Wunsafe-loop-optimizations \
+ -Wunused-macros \
+ -Wvariadic-macros \
+ -Wvector-operation-performance \
+ -Wvla \
+ -Wwrite-strings \
+ \
+ ; do
+ gl_AS_VAR_APPEND([$1], [" $gl_manywarn_item"])
+ done
+
+ # gcc --help=warnings outputs an unusual form for these options; list
+ # them here so that the above 'comm' command doesn't report a false match.
+ gl_AS_VAR_APPEND([$1], [' -Warray-bounds=2'])
+ gl_AS_VAR_APPEND([$1], [' -Wattribute-alias=2'])
+ gl_AS_VAR_APPEND([$1], [' -Wbidi-chars=any,ucn'])
+ gl_AS_VAR_APPEND([$1], [' -Wformat-overflow=2'])
+ gl_AS_VAR_APPEND([$1], [' -Wformat=2'])
+ gl_AS_VAR_APPEND([$1], [' -Wformat-truncation=2'])
+ gl_AS_VAR_APPEND([$1], [' -Wimplicit-fallthrough=5'])
+ gl_AS_VAR_APPEND([$1], [' -Wshift-overflow=2'])
+ gl_AS_VAR_APPEND([$1], [' -Wuse-after-free=3'])
+ gl_AS_VAR_APPEND([$1], [' -Wunused-const-variable=2'])
+ gl_AS_VAR_APPEND([$1], [' -Wvla-larger-than=4031'])
+
+ # These are needed for older GCC versions.
+ if test -n "$GCC"; then
+ case `($CC --version) 2>/dev/null` in
+ 'gcc (GCC) '[[0-3]].* | \
+ 'gcc (GCC) '4.[[0-7]].*)
+ gl_AS_VAR_APPEND([$1], [' -fdiagnostics-show-option'])
+ gl_AS_VAR_APPEND([$1], [' -funit-at-a-time'])
+ ;;
+ esac
+ fi
+
+ # Disable specific options as needed.
+ if test "$gl_cv_cc_nomfi_needed" = yes; then
+ gl_AS_VAR_APPEND([$1], [' -Wno-missing-field-initializers'])
+ fi
+
+ if test "$gl_cv_cc_uninitialized_supported" = no; then
+ gl_AS_VAR_APPEND([$1], [' -Wno-uninitialized'])
+ fi
+
+ # This warning have too many false alarms in GCC 11.2.1.
+ # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101713
+ gl_AS_VAR_APPEND([$1], [' -Wno-analyzer-malloc-leak'])
+
+ AC_LANG_POP([C])
+])
+
+# Specialization for _AC_LANG = C++.
+AC_DEFUN([gl_MANYWARN_ALL_GCC(C++)],
+[
+ gl_MANYWARN_ALL_GCC_CXX_IMPL([$1])
+])
diff --git a/m4/minmax.m4 b/m4/minmax.m4
new file mode 100644
index 0000000..b976739
--- /dev/null
+++ b/m4/minmax.m4
@@ -0,0 +1,44 @@
+# minmax.m4 serial 4
+dnl Copyright (C) 2005, 2009-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_PREREQ([2.53])
+
+AC_DEFUN([gl_MINMAX],
+[
+ AC_REQUIRE([gl_PREREQ_MINMAX])
+])
+
+# Prerequisites of lib/minmax.h.
+AC_DEFUN([gl_PREREQ_MINMAX],
+[
+ gl_MINMAX_IN_HEADER([limits.h])
+ gl_MINMAX_IN_HEADER([sys/param.h])
+])
+
+dnl gl_MINMAX_IN_HEADER(HEADER)
+dnl The parameter has to be a literal header name; it cannot be macro,
+dnl nor a shell variable. (Because autoheader collects only AC_DEFINE
+dnl invocations with a literal macro name.)
+AC_DEFUN([gl_MINMAX_IN_HEADER],
+[
+ m4_pushdef([header], AS_TR_SH([$1]))
+ m4_pushdef([HEADER], AS_TR_CPP([$1]))
+ AC_CACHE_CHECK([whether <$1> defines MIN and MAX],
+ [gl_cv_minmax_in_]header,
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <$1>
+ int x = MIN (42, 17);]],
+ [[]])],
+ [gl_cv_minmax_in_]header[=yes],
+ [gl_cv_minmax_in_]header[=no])])
+ if test $gl_cv_minmax_in_[]header = yes; then
+ AC_DEFINE([HAVE_MINMAX_IN_]HEADER, 1,
+ [Define to 1 if <$1> defines the MIN and MAX macros.])
+ fi
+ m4_popdef([HEADER])
+ m4_popdef([header])
+])
diff --git a/m4/multiarch.m4 b/m4/multiarch.m4
new file mode 100644
index 0000000..5d94276
--- /dev/null
+++ b/m4/multiarch.m4
@@ -0,0 +1,65 @@
+# multiarch.m4 serial 9
+dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# Determine whether the compiler is or may be producing universal binaries.
+#
+# On Mac OS X 10.5 and later systems, the user can create libraries and
+# executables that work on multiple system types--known as "fat" or
+# "universal" binaries--by specifying multiple '-arch' options to the
+# compiler but only a single '-arch' option to the preprocessor. Like
+# this:
+#
+# ./configure CC="gcc -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+# CXX="g++ -arch i386 -arch x86_64 -arch ppc -arch ppc64" \
+# CPP="gcc -E" CXXCPP="g++ -E"
+#
+# Detect this situation and set APPLE_UNIVERSAL_BUILD accordingly.
+
+AC_DEFUN_ONCE([gl_MULTIARCH],
+[
+ dnl Code similar to autoconf-2.63 AC_C_BIGENDIAN.
+ AC_CACHE_CHECK([whether the compiler produces multi-arch binaries],
+ [gl_cv_c_multiarch],
+ [gl_cv_c_multiarch=no
+ AC_COMPILE_IFELSE(
+ [AC_LANG_SOURCE(
+ [[#ifndef __APPLE_CC__
+ not a universal capable compiler
+ #endif
+ typedef int dummy;
+ ]])],
+ [
+ dnl Check for potential -arch flags. It is not universal unless
+ dnl there are at least two -arch flags with different values.
+ arch=
+ prev=
+ for word in ${CC} ${CFLAGS} ${CPPFLAGS} ${LDFLAGS}; do
+ if test -n "$prev"; then
+ case $word in
+ i?86 | x86_64 | ppc | ppc64 | arm | arm64)
+ if test -z "$arch" || test "$arch" = "$word"; then
+ arch="$word"
+ else
+ gl_cv_c_multiarch=yes
+ fi
+ ;;
+ esac
+ prev=
+ else
+ if test "x$word" = "x-arch"; then
+ prev=arch
+ fi
+ fi
+ done
+ ])
+ ])
+ if test $gl_cv_c_multiarch = yes; then
+ APPLE_UNIVERSAL_BUILD=1
+ else
+ APPLE_UNIVERSAL_BUILD=0
+ fi
+ AC_SUBST([APPLE_UNIVERSAL_BUILD])
+])
diff --git a/m4/off_t.m4 b/m4/off_t.m4
new file mode 100644
index 0000000..0890ada
--- /dev/null
+++ b/m4/off_t.m4
@@ -0,0 +1,18 @@
+# off_t.m4 serial 1
+dnl Copyright (C) 2012-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Check whether to override the 'off_t' type.
+dnl Set WINDOWS_64_BIT_OFF_T.
+
+AC_DEFUN([gl_TYPE_OFF_T],
+[
+ m4_ifdef([gl_LARGEFILE], [
+ AC_REQUIRE([gl_LARGEFILE])
+ ], [
+ WINDOWS_64_BIT_OFF_T=0
+ ])
+ AC_SUBST([WINDOWS_64_BIT_OFF_T])
+])
diff --git a/m4/ssize_t.m4 b/m4/ssize_t.m4
new file mode 100644
index 0000000..03b2b89
--- /dev/null
+++ b/m4/ssize_t.m4
@@ -0,0 +1,23 @@
+# ssize_t.m4 serial 5 (gettext-0.18.2)
+dnl Copyright (C) 2001-2003, 2006, 2010-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Test whether ssize_t is defined.
+
+AC_DEFUN([gt_TYPE_SSIZE_T],
+[
+ AC_CACHE_CHECK([for ssize_t], [gt_cv_ssize_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <sys/types.h>]],
+ [[int x = sizeof (ssize_t *) + sizeof (ssize_t);
+ return !x;]])],
+ [gt_cv_ssize_t=yes], [gt_cv_ssize_t=no])])
+ if test $gt_cv_ssize_t = no; then
+ AC_DEFINE([ssize_t], [int],
+ [Define as a signed type of the same size as size_t.])
+ fi
+])
diff --git a/m4/stdbool.m4 b/m4/stdbool.m4
new file mode 100644
index 0000000..c67908a
--- /dev/null
+++ b/m4/stdbool.m4
@@ -0,0 +1,118 @@
+# Check for stdbool.h that conforms to C99.
+
+dnl Copyright (C) 2002-2006, 2009-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+#serial 9
+
+# Prepare for substituting <stdbool.h> if it is not supported.
+
+AC_DEFUN([gl_STDBOOL_H],
+[
+ AC_REQUIRE([AC_CHECK_HEADER_STDBOOL])
+ AC_REQUIRE([AC_CANONICAL_HOST])
+
+ dnl On some platforms, <stdbool.h> does not exist or does not conform to C99.
+ dnl On Solaris 10 with CC=cc CXX=CC, <stdbool.h> exists but is not usable
+ dnl in C++ mode (and no <cstdbool> exists). In this case, we use our
+ dnl replacement, also in C mode (for binary compatibility between C and C++).
+ if test "$ac_cv_header_stdbool_h" = yes; then
+ case "$host_os" in
+ solaris*)
+ if test -z "$GCC"; then
+ GL_GENERATE_STDBOOL_H=true
+ else
+ GL_GENERATE_STDBOOL_H=false
+ fi
+ ;;
+ *)
+ GL_GENERATE_STDBOOL_H=false
+ ;;
+ esac
+ else
+ GL_GENERATE_STDBOOL_H=true
+ fi
+
+ if test "$ac_cv_type__Bool" = yes; then
+ HAVE__BOOL=1
+ else
+ HAVE__BOOL=0
+ fi
+ AC_SUBST([HAVE__BOOL])
+])
+
+m4_version_prereq([2.72], [], [
+
+AC_DEFUN([AC_CHECK_HEADER_STDBOOL],
+ [AC_CHECK_TYPES([_Bool])
+ AC_CACHE_CHECK([for stdbool.h that conforms to C99 or later],
+ [ac_cv_header_stdbool_h],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <stdbool.h>
+
+ /* "true" and "false" should be usable in #if expressions and
+ integer constant expressions, and "bool" should be a valid
+ type name.
+
+ Although C 1999 requires bool, true, and false to be macros,
+ C 2023 and C++ 2011 overrule that, so do not test for that.
+ Although C 1999 requires __bool_true_false_are_defined and
+ _Bool, C 2023 says they are obsolescent, so do not require
+ them. */
+
+ #if !true
+ #error "'true' is not true"
+ #endif
+ #if true != 1
+ #error "'true' is not equal to 1"
+ #endif
+ char b[true == 1 ? 1 : -1];
+ char c[true];
+
+ #if false
+ #error "'false' is not false"
+ #endif
+ #if false != 0
+ #error "'false' is not equal to 0"
+ #endif
+ char d[false == 0 ? 1 : -1];
+
+ enum { e = false, f = true, g = false * true, h = true * 256 };
+
+ char i[(bool) 0.5 == true ? 1 : -1];
+ char j[(bool) 0.0 == false ? 1 : -1];
+ char k[sizeof (bool) > 0 ? 1 : -1];
+
+ struct sb { bool s: 1; bool t; } s;
+ char l[sizeof s.t > 0 ? 1 : -1];
+
+ /* The following fails for
+ HP aC++/ANSI C B3910B A.05.55 [Dec 04 2003]. */
+ bool m[h];
+ char n[sizeof m == h * sizeof m[0] ? 1 : -1];
+ char o[-1 - (bool) 0 < 0 ? 1 : -1];
+ /* Catch a bug in an HP-UX C compiler. See
+ https://gcc.gnu.org/ml/gcc-patches/2003-12/msg02303.html
+ https://lists.gnu.org/r/bug-coreutils/2005-11/msg00161.html
+ */
+ bool p = true;
+ bool *pp = &p;
+ ]],
+ [[
+ bool ps = &s;
+ *pp |= p;
+ *pp |= ! p;
+
+ /* Refer to every declared value, so they cannot be
+ discarded as unused. */
+ return (!a + !b + !c + !d + !e + !f + !g + !h + !i + !j + !k
+ + !l + !m + !n + !o + !p + !pp + !ps);
+ ]])],
+ [ac_cv_header_stdbool_h=yes],
+ [ac_cv_header_stdbool_h=no])])
+])# AC_CHECK_HEADER_STDBOOL
+
+]) # m4_version_prereq 2.72
diff --git a/m4/stddef_h.m4 b/m4/stddef_h.m4
new file mode 100644
index 0000000..abfd203
--- /dev/null
+++ b/m4/stddef_h.m4
@@ -0,0 +1,97 @@
+# stddef_h.m4 serial 12
+dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl A placeholder for <stddef.h>, for platforms that have issues.
+
+AC_DEFUN_ONCE([gl_STDDEF_H],
+[
+ AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+ AC_REQUIRE([gt_TYPE_WCHAR_T])
+
+ dnl Persuade OpenBSD <stddef.h> to declare max_align_t.
+ AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+ GL_GENERATE_STDDEF_H=false
+
+ dnl Test whether the type max_align_t exists and whether its alignment
+ dnl "is as great as is supported by the implementation in all contexts".
+ AC_CACHE_CHECK([for good max_align_t],
+ [gl_cv_type_max_align_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <stddef.h>
+ unsigned int s = sizeof (max_align_t);
+ #if defined __GNUC__ || defined __clang__ || defined __IBM__ALIGNOF__
+ int check1[2 * (__alignof__ (double) <= __alignof__ (max_align_t)) - 1];
+ int check2[2 * (__alignof__ (long double) <= __alignof__ (max_align_t)) - 1];
+ #endif
+ typedef struct { char a; max_align_t b; } max_helper;
+ typedef struct { char a; long b; } long_helper;
+ typedef struct { char a; double b; } double_helper;
+ typedef struct { char a; long double b; } long_double_helper;
+ int check3[2 * (offsetof (long_helper, b) <= offsetof (max_helper, b)) - 1];
+ int check4[2 * (offsetof (double_helper, b) <= offsetof (max_helper, b)) - 1];
+ int check5[2 * (offsetof (long_double_helper, b) <= offsetof (max_helper, b)) - 1];
+ ]])],
+ [gl_cv_type_max_align_t=yes],
+ [gl_cv_type_max_align_t=no])
+ ])
+ if test $gl_cv_type_max_align_t = no; then
+ HAVE_MAX_ALIGN_T=0
+ GL_GENERATE_STDDEF_H=true
+ fi
+
+ if test $gt_cv_c_wchar_t = no; then
+ HAVE_WCHAR_T=0
+ GL_GENERATE_STDDEF_H=true
+ fi
+
+ AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions],
+ [gl_cv_decl_null_works],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stddef.h>
+ int test[2 * (sizeof NULL == sizeof (void *)) -1];
+]])],
+ [gl_cv_decl_null_works=yes],
+ [gl_cv_decl_null_works=no])])
+ if test $gl_cv_decl_null_works = no; then
+ REPLACE_NULL=1
+ GL_GENERATE_STDDEF_H=true
+ fi
+
+ if $GL_GENERATE_STDDEF_H; then
+ gl_NEXT_HEADERS([stddef.h])
+ fi
+])
+
+# gl_STDDEF_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_STDDEF_MODULE_INDICATOR],
+[
+ dnl Ensure to expand the default settings once only.
+ gl_STDDEF_H_REQUIRE_DEFAULTS
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_STDDEF_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDDEF_H_MODULE_INDICATOR_DEFAULTS], [
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_STDDEF_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_STDDEF_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_STDDEF_H_DEFAULTS],
+[
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ REPLACE_NULL=0; AC_SUBST([REPLACE_NULL])
+ HAVE_MAX_ALIGN_T=1; AC_SUBST([HAVE_MAX_ALIGN_T])
+ HAVE_WCHAR_T=1; AC_SUBST([HAVE_WCHAR_T])
+])
diff --git a/m4/stdint.m4 b/m4/stdint.m4
new file mode 100644
index 0000000..c3f0894
--- /dev/null
+++ b/m4/stdint.m4
@@ -0,0 +1,531 @@
+# stdint.m4 serial 61
+dnl Copyright (C) 2001-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Paul Eggert and Bruno Haible.
+dnl Test whether <stdint.h> is supported or must be substituted.
+
+AC_PREREQ([2.61])
+
+AC_DEFUN_ONCE([gl_STDINT_H],
+[
+ AC_PREREQ([2.59])dnl
+ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
+
+ AC_REQUIRE([gl_LIMITS_H])
+ AC_REQUIRE([gt_TYPE_WINT_T])
+
+ dnl For backward compatibility. Some packages may still be testing these
+ dnl macros.
+ AC_DEFINE([HAVE_LONG_LONG_INT], [1],
+ [Define to 1 if the system has the type 'long long int'.])
+ AC_DEFINE([HAVE_UNSIGNED_LONG_LONG_INT], [1],
+ [Define to 1 if the system has the type 'unsigned long long int'.])
+
+ dnl Check for <wchar.h>, in the same way as gl_WCHAR_H does.
+ AC_CHECK_HEADERS_ONCE([wchar.h])
+ if test $ac_cv_header_wchar_h = yes; then
+ HAVE_WCHAR_H=1
+ else
+ HAVE_WCHAR_H=0
+ fi
+ AC_SUBST([HAVE_WCHAR_H])
+
+ dnl Check for <inttypes.h>.
+ AC_CHECK_HEADERS_ONCE([inttypes.h])
+ if test $ac_cv_header_inttypes_h = yes; then
+ HAVE_INTTYPES_H=1
+ else
+ HAVE_INTTYPES_H=0
+ fi
+ AC_SUBST([HAVE_INTTYPES_H])
+
+ dnl Check for <sys/types.h>.
+ AC_CHECK_HEADERS_ONCE([sys/types.h])
+ if test $ac_cv_header_sys_types_h = yes; then
+ HAVE_SYS_TYPES_H=1
+ else
+ HAVE_SYS_TYPES_H=0
+ fi
+ AC_SUBST([HAVE_SYS_TYPES_H])
+
+ gl_CHECK_NEXT_HEADERS([stdint.h])
+ if test $ac_cv_header_stdint_h = yes; then
+ HAVE_STDINT_H=1
+ else
+ HAVE_STDINT_H=0
+ fi
+ AC_SUBST([HAVE_STDINT_H])
+
+ dnl Now see whether we need a substitute <stdint.h>.
+ if test $ac_cv_header_stdint_h = yes; then
+ AC_CACHE_CHECK([whether stdint.h conforms to C99],
+ [gl_cv_header_working_stdint_h],
+ [gl_cv_header_working_stdint_h=no
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#define __STDC_CONSTANT_MACROS 1
+#define __STDC_LIMIT_MACROS 1
+#include <stdint.h>
+/* Dragonfly defines WCHAR_MIN, WCHAR_MAX only in <wchar.h>. */
+#if !(defined WCHAR_MIN && defined WCHAR_MAX)
+#error "WCHAR_MIN, WCHAR_MAX not defined in <stdint.h>"
+#endif
+]
+gl_STDINT_INCLUDES
+[
+#ifdef INT8_MAX
+int8_t a1 = INT8_MAX;
+int8_t a1min = INT8_MIN;
+#endif
+#ifdef INT16_MAX
+int16_t a2 = INT16_MAX;
+int16_t a2min = INT16_MIN;
+#endif
+#ifdef INT32_MAX
+int32_t a3 = INT32_MAX;
+int32_t a3min = INT32_MIN;
+#endif
+#ifdef INT64_MAX
+int64_t a4 = INT64_MAX;
+int64_t a4min = INT64_MIN;
+#endif
+#ifdef UINT8_MAX
+uint8_t b1 = UINT8_MAX;
+#else
+typedef int b1[(unsigned char) -1 != 255 ? 1 : -1];
+#endif
+#ifdef UINT16_MAX
+uint16_t b2 = UINT16_MAX;
+#endif
+#ifdef UINT32_MAX
+uint32_t b3 = UINT32_MAX;
+#endif
+#ifdef UINT64_MAX
+uint64_t b4 = UINT64_MAX;
+#endif
+int_least8_t c1 = INT8_C (0x7f);
+int_least8_t c1max = INT_LEAST8_MAX;
+int_least8_t c1min = INT_LEAST8_MIN;
+int_least16_t c2 = INT16_C (0x7fff);
+int_least16_t c2max = INT_LEAST16_MAX;
+int_least16_t c2min = INT_LEAST16_MIN;
+int_least32_t c3 = INT32_C (0x7fffffff);
+int_least32_t c3max = INT_LEAST32_MAX;
+int_least32_t c3min = INT_LEAST32_MIN;
+int_least64_t c4 = INT64_C (0x7fffffffffffffff);
+int_least64_t c4max = INT_LEAST64_MAX;
+int_least64_t c4min = INT_LEAST64_MIN;
+uint_least8_t d1 = UINT8_C (0xff);
+uint_least8_t d1max = UINT_LEAST8_MAX;
+uint_least16_t d2 = UINT16_C (0xffff);
+uint_least16_t d2max = UINT_LEAST16_MAX;
+uint_least32_t d3 = UINT32_C (0xffffffff);
+uint_least32_t d3max = UINT_LEAST32_MAX;
+uint_least64_t d4 = UINT64_C (0xffffffffffffffff);
+uint_least64_t d4max = UINT_LEAST64_MAX;
+int_fast8_t e1 = INT_FAST8_MAX;
+int_fast8_t e1min = INT_FAST8_MIN;
+int_fast16_t e2 = INT_FAST16_MAX;
+int_fast16_t e2min = INT_FAST16_MIN;
+int_fast32_t e3 = INT_FAST32_MAX;
+int_fast32_t e3min = INT_FAST32_MIN;
+int_fast64_t e4 = INT_FAST64_MAX;
+int_fast64_t e4min = INT_FAST64_MIN;
+uint_fast8_t f1 = UINT_FAST8_MAX;
+uint_fast16_t f2 = UINT_FAST16_MAX;
+uint_fast32_t f3 = UINT_FAST32_MAX;
+uint_fast64_t f4 = UINT_FAST64_MAX;
+#ifdef INTPTR_MAX
+intptr_t g = INTPTR_MAX;
+intptr_t gmin = INTPTR_MIN;
+#endif
+#ifdef UINTPTR_MAX
+uintptr_t h = UINTPTR_MAX;
+#endif
+intmax_t i = INTMAX_MAX;
+uintmax_t j = UINTMAX_MAX;
+
+/* Check that SIZE_MAX has the correct type, if possible. */
+#if 201112 <= __STDC_VERSION__
+int k = _Generic (SIZE_MAX, size_t: 0);
+#elif (2 <= __GNUC__ || 4 <= __clang_major__ || defined __IBM__TYPEOF__ \
+ || (0x5110 <= __SUNPRO_C && !__STDC__))
+extern size_t k;
+extern __typeof__ (SIZE_MAX) k;
+#endif
+
+#include <limits.h> /* for CHAR_BIT */
+#define TYPE_MINIMUM(t) \
+ ((t) ((t) 0 < (t) -1 ? (t) 0 : ~ TYPE_MAXIMUM (t)))
+#define TYPE_MAXIMUM(t) \
+ ((t) ((t) 0 < (t) -1 \
+ ? (t) -1 \
+ : ((((t) 1 << (sizeof (t) * CHAR_BIT - 2)) - 1) * 2 + 1)))
+struct s {
+ int check_PTRDIFF:
+ PTRDIFF_MIN == TYPE_MINIMUM (ptrdiff_t)
+ && PTRDIFF_MAX == TYPE_MAXIMUM (ptrdiff_t)
+ ? 1 : -1;
+ /* Detect bug in FreeBSD 6.0/ia64 and FreeBSD 13.0/arm64. */
+ int check_SIG_ATOMIC:
+ SIG_ATOMIC_MIN == TYPE_MINIMUM (sig_atomic_t)
+ && SIG_ATOMIC_MAX == TYPE_MAXIMUM (sig_atomic_t)
+ ? 1 : -1;
+ int check_SIZE: SIZE_MAX == TYPE_MAXIMUM (size_t) ? 1 : -1;
+ int check_WCHAR:
+ WCHAR_MIN == TYPE_MINIMUM (wchar_t)
+ && WCHAR_MAX == TYPE_MAXIMUM (wchar_t)
+ ? 1 : -1;
+ /* Detect bug in mingw. */
+ int check_WINT:
+ WINT_MIN == TYPE_MINIMUM (wint_t)
+ && WINT_MAX == TYPE_MAXIMUM (wint_t)
+ ? 1 : -1;
+
+ /* Detect bugs in glibc 2.4 and Solaris 10 stdint.h, among others. */
+ int check_UINT8_C:
+ (-1 < UINT8_C (0)) == (-1 < (uint_least8_t) 0) ? 1 : -1;
+ int check_UINT16_C:
+ (-1 < UINT16_C (0)) == (-1 < (uint_least16_t) 0) ? 1 : -1;
+
+ /* Detect bugs in OpenBSD 3.9 stdint.h. */
+#ifdef UINT8_MAX
+ int check_uint8: (uint8_t) -1 == UINT8_MAX ? 1 : -1;
+#endif
+#ifdef UINT16_MAX
+ int check_uint16: (uint16_t) -1 == UINT16_MAX ? 1 : -1;
+#endif
+#ifdef UINT32_MAX
+ int check_uint32: (uint32_t) -1 == UINT32_MAX ? 1 : -1;
+#endif
+#ifdef UINT64_MAX
+ int check_uint64: (uint64_t) -1 == UINT64_MAX ? 1 : -1;
+#endif
+ int check_uint_least8: (uint_least8_t) -1 == UINT_LEAST8_MAX ? 1 : -1;
+ int check_uint_least16: (uint_least16_t) -1 == UINT_LEAST16_MAX ? 1 : -1;
+ int check_uint_least32: (uint_least32_t) -1 == UINT_LEAST32_MAX ? 1 : -1;
+ int check_uint_least64: (uint_least64_t) -1 == UINT_LEAST64_MAX ? 1 : -1;
+ int check_uint_fast8: (uint_fast8_t) -1 == UINT_FAST8_MAX ? 1 : -1;
+ int check_uint_fast16: (uint_fast16_t) -1 == UINT_FAST16_MAX ? 1 : -1;
+ int check_uint_fast32: (uint_fast32_t) -1 == UINT_FAST32_MAX ? 1 : -1;
+ int check_uint_fast64: (uint_fast64_t) -1 == UINT_FAST64_MAX ? 1 : -1;
+ int check_uintptr: (uintptr_t) -1 == UINTPTR_MAX ? 1 : -1;
+ int check_uintmax: (uintmax_t) -1 == UINTMAX_MAX ? 1 : -1;
+ int check_size: (size_t) -1 == SIZE_MAX ? 1 : -1;
+};
+ ]])],
+ [dnl Determine whether the various *_MIN, *_MAX macros are usable
+ dnl in preprocessor expression. We could do it by compiling a test
+ dnl program for each of these macros. It is faster to run a program
+ dnl that inspects the macro expansion.
+ dnl This detects a bug on HP-UX 11.23/ia64.
+ AC_RUN_IFELSE([
+ AC_LANG_PROGRAM([[
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#define __STDC_CONSTANT_MACROS 1
+#define __STDC_LIMIT_MACROS 1
+#include <stdint.h>
+]
+gl_STDINT_INCLUDES
+[
+#include <stdio.h>
+#include <string.h>
+#define MVAL(macro) MVAL1(macro)
+#define MVAL1(expression) #expression
+static const char *macro_values[] =
+ {
+#ifdef INT8_MAX
+ MVAL (INT8_MAX),
+#endif
+#ifdef INT16_MAX
+ MVAL (INT16_MAX),
+#endif
+#ifdef INT32_MAX
+ MVAL (INT32_MAX),
+#endif
+#ifdef INT64_MAX
+ MVAL (INT64_MAX),
+#endif
+#ifdef UINT8_MAX
+ MVAL (UINT8_MAX),
+#endif
+#ifdef UINT16_MAX
+ MVAL (UINT16_MAX),
+#endif
+#ifdef UINT32_MAX
+ MVAL (UINT32_MAX),
+#endif
+#ifdef UINT64_MAX
+ MVAL (UINT64_MAX),
+#endif
+ NULL
+ };
+]], [[
+ const char **mv;
+ for (mv = macro_values; *mv != NULL; mv++)
+ {
+ const char *value = *mv;
+ /* Test whether it looks like a cast expression. */
+ if (strncmp (value, "((unsigned int)"/*)*/, 15) == 0
+ || strncmp (value, "((unsigned short)"/*)*/, 17) == 0
+ || strncmp (value, "((unsigned char)"/*)*/, 16) == 0
+ || strncmp (value, "((int)"/*)*/, 6) == 0
+ || strncmp (value, "((signed short)"/*)*/, 15) == 0
+ || strncmp (value, "((signed char)"/*)*/, 14) == 0)
+ return mv - macro_values + 1;
+ }
+ return 0;
+]])],
+ [gl_cv_header_working_stdint_h=yes],
+ [],
+ [case "$host_os" in
+ # Guess yes on native Windows.
+ mingw*) gl_cv_header_working_stdint_h="guessing yes" ;;
+ # In general, assume it works.
+ *) gl_cv_header_working_stdint_h="guessing yes" ;;
+ esac
+ ])
+ ])
+ ])
+ fi
+
+ HAVE_C99_STDINT_H=0
+ HAVE_SYS_BITYPES_H=0
+ HAVE_SYS_INTTYPES_H=0
+ GL_GENERATE_STDINT_H=true
+ case "$gl_cv_header_working_stdint_h" in
+ *yes)
+ HAVE_C99_STDINT_H=1
+ dnl Now see whether the system <stdint.h> works without
+ dnl __STDC_CONSTANT_MACROS/__STDC_LIMIT_MACROS defined.
+ dnl If not, there would be problems when stdint.h is included from C++.
+ AC_CACHE_CHECK([whether stdint.h works without ISO C predefines],
+ [gl_cv_header_stdint_without_STDC_macros],
+ [gl_cv_header_stdint_without_STDC_macros=no
+ AC_COMPILE_IFELSE([
+ AC_LANG_PROGRAM([[
+#define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1 /* work if build isn't clean */
+#include <stdint.h>
+]
+gl_STDINT_INCLUDES
+[
+intmax_t im = INTMAX_MAX;
+int32_t i32 = INT32_C (0x7fffffff);
+ ]])],
+ [gl_cv_header_stdint_without_STDC_macros=yes])
+ ])
+
+ if test $gl_cv_header_stdint_without_STDC_macros = no; then
+ AC_DEFINE([__STDC_CONSTANT_MACROS], [1],
+ [Define to 1 if the system <stdint.h> predates C++11.])
+ AC_DEFINE([__STDC_LIMIT_MACROS], [1],
+ [Define to 1 if the system <stdint.h> predates C++11.])
+ fi
+ AC_CACHE_CHECK([whether stdint.h has UINTMAX_WIDTH etc.],
+ [gl_cv_header_stdint_width],
+ [gl_cv_header_stdint_width=no
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[
+ /* Work if build is not clean. */
+ #define _GL_JUST_INCLUDE_SYSTEM_STDINT_H 1
+ #ifndef __STDC_WANT_IEC_60559_BFP_EXT__
+ #define __STDC_WANT_IEC_60559_BFP_EXT__ 1
+ #endif
+ #include <stdint.h>
+ ]gl_STDINT_INCLUDES[
+ int iw = UINTMAX_WIDTH;
+ ]])],
+ [gl_cv_header_stdint_width=yes])])
+ if test "$gl_cv_header_stdint_width" = yes; then
+ GL_GENERATE_STDINT_H=false
+ fi
+ ;;
+ *)
+ dnl Check for <sys/inttypes.h>, and for
+ dnl <sys/bitypes.h> (used in Linux libc4 >= 4.6.7 and libc5).
+ AC_CHECK_HEADERS([sys/inttypes.h sys/bitypes.h])
+ if test $ac_cv_header_sys_inttypes_h = yes; then
+ HAVE_SYS_INTTYPES_H=1
+ fi
+ if test $ac_cv_header_sys_bitypes_h = yes; then
+ HAVE_SYS_BITYPES_H=1
+ fi
+ gl_STDINT_TYPE_PROPERTIES
+ ;;
+ esac
+
+ dnl The substitute stdint.h needs the substitute limit.h's _GL_INTEGER_WIDTH.
+ gl_REPLACE_LIMITS_H
+
+ AC_SUBST([HAVE_C99_STDINT_H])
+ AC_SUBST([HAVE_SYS_BITYPES_H])
+ AC_SUBST([HAVE_SYS_INTTYPES_H])
+])
+
+dnl gl_STDINT_BITSIZEOF(TYPES, INCLUDES)
+dnl Determine the size of each of the given types in bits.
+AC_DEFUN([gl_STDINT_BITSIZEOF],
+[
+ dnl Use a shell loop, to avoid bloating configure, and
+ dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
+ dnl config.h.in,
+ dnl - extra AC_SUBST calls, so that the right substitutions are made.
+ m4_foreach_w([gltype], [$1],
+ [AH_TEMPLATE([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]),
+ [Define to the number of bits in type ']gltype['.])])
+ for gltype in $1 ; do
+ AC_CACHE_CHECK([for bit size of $gltype], [gl_cv_bitsizeof_${gltype}],
+ [AC_COMPUTE_INT([result], [sizeof ($gltype) * CHAR_BIT],
+ [$2
+#include <limits.h>], [result=unknown])
+ eval gl_cv_bitsizeof_${gltype}=\$result
+ ])
+ eval result=\$gl_cv_bitsizeof_${gltype}
+ if test $result = unknown; then
+ dnl Use a nonempty default, because some compilers, such as IRIX 5 cc,
+ dnl do a syntax check even on unused #if conditions and give an error
+ dnl on valid C code like this:
+ dnl #if 0
+ dnl # if > 32
+ dnl # endif
+ dnl #endif
+ result=0
+ fi
+ GLTYPE=`echo "$gltype" | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+ AC_DEFINE_UNQUOTED([BITSIZEOF_${GLTYPE}], [$result])
+ eval BITSIZEOF_${GLTYPE}=\$result
+ done
+ m4_foreach_w([gltype], [$1],
+ [AC_SUBST([BITSIZEOF_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))])
+])
+
+dnl gl_CHECK_TYPES_SIGNED(TYPES, INCLUDES)
+dnl Determine the signedness of each of the given types.
+dnl Define HAVE_SIGNED_TYPE if type is signed.
+AC_DEFUN([gl_CHECK_TYPES_SIGNED],
+[
+ dnl Use a shell loop, to avoid bloating configure, and
+ dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
+ dnl config.h.in,
+ dnl - extra AC_SUBST calls, so that the right substitutions are made.
+ m4_foreach_w([gltype], [$1],
+ [AH_TEMPLATE([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]),
+ [Define to 1 if ']gltype[' is a signed integer type.])])
+ for gltype in $1 ; do
+ AC_CACHE_CHECK([whether $gltype is signed], [gl_cv_type_${gltype}_signed],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([$2[
+ int verify[2 * (($gltype) -1 < ($gltype) 0) - 1];]])],
+ result=yes, result=no)
+ eval gl_cv_type_${gltype}_signed=\$result
+ ])
+ eval result=\$gl_cv_type_${gltype}_signed
+ GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+ if test "$result" = yes; then
+ AC_DEFINE_UNQUOTED([HAVE_SIGNED_${GLTYPE}], [1])
+ eval HAVE_SIGNED_${GLTYPE}=1
+ else
+ eval HAVE_SIGNED_${GLTYPE}=0
+ fi
+ done
+ m4_foreach_w([gltype], [$1],
+ [AC_SUBST([HAVE_SIGNED_]m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_]))])
+])
+
+dnl gl_INTEGER_TYPE_SUFFIX(TYPES, INCLUDES)
+dnl Determine the suffix to use for integer constants of the given types.
+dnl Define t_SUFFIX for each such type.
+AC_DEFUN([gl_INTEGER_TYPE_SUFFIX],
+[
+ dnl Use a shell loop, to avoid bloating configure, and
+ dnl - extra AH_TEMPLATE calls, so that autoheader knows what to put into
+ dnl config.h.in,
+ dnl - extra AC_SUBST calls, so that the right substitutions are made.
+ m4_foreach_w([gltype], [$1],
+ [AH_TEMPLATE(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX],
+ [Define to l, ll, u, ul, ull, etc., as suitable for
+ constants of type ']gltype['.])])
+ for gltype in $1 ; do
+ AC_CACHE_CHECK([for $gltype integer literal suffix],
+ [gl_cv_type_${gltype}_suffix],
+ [eval gl_cv_type_${gltype}_suffix=no
+ eval result=\$gl_cv_type_${gltype}_signed
+ if test "$result" = yes; then
+ glsufu=
+ else
+ glsufu=u
+ fi
+ for glsuf in "$glsufu" ${glsufu}l ${glsufu}ll ${glsufu}i64; do
+ case $glsuf in
+ '') gltype1='int';;
+ l) gltype1='long int';;
+ ll) gltype1='long long int';;
+ i64) gltype1='__int64';;
+ u) gltype1='unsigned int';;
+ ul) gltype1='unsigned long int';;
+ ull) gltype1='unsigned long long int';;
+ ui64)gltype1='unsigned __int64';;
+ esac
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([$2[
+ extern $gltype foo;
+ extern $gltype1 foo;]])],
+ [eval gl_cv_type_${gltype}_suffix=\$glsuf])
+ eval result=\$gl_cv_type_${gltype}_suffix
+ test "$result" != no && break
+ done])
+ GLTYPE=`echo $gltype | tr 'abcdefghijklmnopqrstuvwxyz ' 'ABCDEFGHIJKLMNOPQRSTUVWXYZ_'`
+ eval result=\$gl_cv_type_${gltype}_suffix
+ test "$result" = no && result=
+ eval ${GLTYPE}_SUFFIX=\$result
+ AC_DEFINE_UNQUOTED([${GLTYPE}_SUFFIX], [$result])
+ done
+ m4_foreach_w([gltype], [$1],
+ [AC_SUBST(m4_translit(gltype,[abcdefghijklmnopqrstuvwxyz ],[ABCDEFGHIJKLMNOPQRSTUVWXYZ_])[_SUFFIX])])
+])
+
+dnl gl_STDINT_INCLUDES
+AC_DEFUN([gl_STDINT_INCLUDES],
+[[
+ #include <stddef.h>
+ #include <signal.h>
+ #if HAVE_WCHAR_H
+ # include <wchar.h>
+ #endif
+]])
+
+dnl gl_STDINT_TYPE_PROPERTIES
+dnl Compute HAVE_SIGNED_t, BITSIZEOF_t and t_SUFFIX, for all the types t
+dnl of interest to stdint.in.h.
+AC_DEFUN([gl_STDINT_TYPE_PROPERTIES],
+[
+ AC_REQUIRE([gl_MULTIARCH])
+ if test $APPLE_UNIVERSAL_BUILD = 0; then
+ gl_STDINT_BITSIZEOF([ptrdiff_t size_t],
+ [gl_STDINT_INCLUDES])
+ fi
+ gl_STDINT_BITSIZEOF([sig_atomic_t wchar_t wint_t],
+ [gl_STDINT_INCLUDES])
+ gl_CHECK_TYPES_SIGNED([sig_atomic_t wchar_t wint_t],
+ [gl_STDINT_INCLUDES])
+ gl_cv_type_ptrdiff_t_signed=yes
+ gl_cv_type_size_t_signed=no
+ if test $APPLE_UNIVERSAL_BUILD = 0; then
+ gl_INTEGER_TYPE_SUFFIX([ptrdiff_t size_t],
+ [gl_STDINT_INCLUDES])
+ fi
+ gl_INTEGER_TYPE_SUFFIX([sig_atomic_t wchar_t wint_t],
+ [gl_STDINT_INCLUDES])
+
+ dnl If wint_t is smaller than 'int', it cannot satisfy the ISO C 99
+ dnl requirement that wint_t is "unchanged by default argument promotions".
+ dnl In this case gnulib's <wchar.h> and <wctype.h> override wint_t.
+ dnl Set the variable BITSIZEOF_WINT_T accordingly.
+ if test $GNULIBHEADERS_OVERRIDE_WINT_T = 1; then
+ BITSIZEOF_WINT_T=32
+ fi
+])
diff --git a/m4/stdlib_h.m4 b/m4/stdlib_h.m4
new file mode 100644
index 0000000..9e20969
--- /dev/null
+++ b/m4/stdlib_h.m4
@@ -0,0 +1,200 @@
+# stdlib_h.m4 serial 66
+dnl Copyright (C) 2007-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_STDLIB_H],
+[
+ AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+ gl_NEXT_HEADERS([stdlib.h])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use, and which is not
+ dnl guaranteed by C89.
+ gl_WARN_ON_USE_PREPARE([[#include <stdlib.h>
+#if HAVE_SYS_LOADAVG_H
+/* OpenIndiana has a bug: <sys/time.h> must be included before
+ <sys/loadavg.h>. */
+# include <sys/time.h>
+# include <sys/loadavg.h>
+#endif
+#if HAVE_RANDOM_H
+# include <random.h>
+#endif
+ ]], [_Exit aligned_alloc atoll canonicalize_file_name free
+ getloadavg getsubopt grantpt
+ initstate initstate_r mbtowc mkdtemp mkostemp mkostemps mkstemp mkstemps
+ posix_memalign posix_openpt ptsname ptsname_r qsort_r
+ random random_r reallocarray realpath rpmatch secure_getenv setenv
+ setstate setstate_r srandom srandom_r
+ strtod strtol strtold strtoll strtoul strtoull unlockpt unsetenv])
+
+ AC_REQUIRE([AC_C_RESTRICT])
+
+ AC_CHECK_DECLS_ONCE([ecvt])
+ if test $ac_cv_have_decl_ecvt = no; then
+ HAVE_DECL_ECVT=0
+ fi
+ AC_CHECK_DECLS_ONCE([fcvt])
+ if test $ac_cv_have_decl_fcvt = no; then
+ HAVE_DECL_FCVT=0
+ fi
+ AC_CHECK_DECLS_ONCE([gcvt])
+ if test $ac_cv_have_decl_gcvt = no; then
+ HAVE_DECL_GCVT=0
+ fi
+])
+
+# gl_STDLIB_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_STDLIB_MODULE_INDICATOR],
+[
+ dnl Ensure to expand the default settings once only.
+ gl_STDLIB_H_REQUIRE_DEFAULTS
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_STDLIB_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_STDLIB_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB__EXIT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ALIGNED_ALLOC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ATOLL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CALLOC_GNU])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CALLOC_POSIX])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CANONICALIZE_FILE_NAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FREE_POSIX])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOADAVG])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETSUBOPT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GRANTPT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MALLOC_GNU])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MALLOC_POSIX])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBTOWC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKDTEMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKOSTEMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKOSTEMPS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKSTEMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MKSTEMPS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_MEMALIGN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_POSIX_OPENPT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTSNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PTSNAME_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PUTENV])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_QSORT_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RANDOM])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RANDOM_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALLOCARRAY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALLOC_GNU])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALLOC_POSIX])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_REALPATH])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RPMATCH])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SECURE_GETENV])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETENV])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOD])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOLD])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOLL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOUL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOULL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYSTEM_POSIX])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLOCKPT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNSETENV])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WCTOMB])
+ dnl Support Microsoft deprecated alias function names by default.
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ECVT], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_FCVT], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GCVT], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MKTEMP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_PUTENV], [1])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_STDLIB_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_STDLIB_H_DEFAULTS],
+[
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE__EXIT=1; AC_SUBST([HAVE__EXIT])
+ HAVE_ALIGNED_ALLOC=1; AC_SUBST([HAVE_ALIGNED_ALLOC])
+ HAVE_ATOLL=1; AC_SUBST([HAVE_ATOLL])
+ HAVE_CANONICALIZE_FILE_NAME=1; AC_SUBST([HAVE_CANONICALIZE_FILE_NAME])
+ HAVE_DECL_ECVT=1; AC_SUBST([HAVE_DECL_ECVT])
+ HAVE_DECL_FCVT=1; AC_SUBST([HAVE_DECL_FCVT])
+ HAVE_DECL_GCVT=1; AC_SUBST([HAVE_DECL_GCVT])
+ HAVE_DECL_GETLOADAVG=1; AC_SUBST([HAVE_DECL_GETLOADAVG])
+ HAVE_GETSUBOPT=1; AC_SUBST([HAVE_GETSUBOPT])
+ HAVE_GRANTPT=1; AC_SUBST([HAVE_GRANTPT])
+ HAVE_INITSTATE=1; AC_SUBST([HAVE_INITSTATE])
+ HAVE_DECL_INITSTATE=1; AC_SUBST([HAVE_DECL_INITSTATE])
+ HAVE_MBTOWC=1; AC_SUBST([HAVE_MBTOWC])
+ HAVE_MKDTEMP=1; AC_SUBST([HAVE_MKDTEMP])
+ HAVE_MKOSTEMP=1; AC_SUBST([HAVE_MKOSTEMP])
+ HAVE_MKOSTEMPS=1; AC_SUBST([HAVE_MKOSTEMPS])
+ HAVE_MKSTEMP=1; AC_SUBST([HAVE_MKSTEMP])
+ HAVE_MKSTEMPS=1; AC_SUBST([HAVE_MKSTEMPS])
+ HAVE_POSIX_MEMALIGN=1; AC_SUBST([HAVE_POSIX_MEMALIGN])
+ HAVE_POSIX_OPENPT=1; AC_SUBST([HAVE_POSIX_OPENPT])
+ HAVE_PTSNAME=1; AC_SUBST([HAVE_PTSNAME])
+ HAVE_PTSNAME_R=1; AC_SUBST([HAVE_PTSNAME_R])
+ HAVE_QSORT_R=1; AC_SUBST([HAVE_QSORT_R])
+ HAVE_RANDOM=1; AC_SUBST([HAVE_RANDOM])
+ HAVE_RANDOM_H=1; AC_SUBST([HAVE_RANDOM_H])
+ HAVE_RANDOM_R=1; AC_SUBST([HAVE_RANDOM_R])
+ HAVE_REALLOCARRAY=1; AC_SUBST([HAVE_REALLOCARRAY])
+ HAVE_REALPATH=1; AC_SUBST([HAVE_REALPATH])
+ HAVE_RPMATCH=1; AC_SUBST([HAVE_RPMATCH])
+ HAVE_SECURE_GETENV=1; AC_SUBST([HAVE_SECURE_GETENV])
+ HAVE_SETENV=1; AC_SUBST([HAVE_SETENV])
+ HAVE_DECL_SETENV=1; AC_SUBST([HAVE_DECL_SETENV])
+ HAVE_SETSTATE=1; AC_SUBST([HAVE_SETSTATE])
+ HAVE_DECL_SETSTATE=1; AC_SUBST([HAVE_DECL_SETSTATE])
+ HAVE_STRTOD=1; AC_SUBST([HAVE_STRTOD])
+ HAVE_STRTOL=1; AC_SUBST([HAVE_STRTOL])
+ HAVE_STRTOLD=1; AC_SUBST([HAVE_STRTOLD])
+ HAVE_STRTOLL=1; AC_SUBST([HAVE_STRTOLL])
+ HAVE_STRTOUL=1; AC_SUBST([HAVE_STRTOUL])
+ HAVE_STRTOULL=1; AC_SUBST([HAVE_STRTOULL])
+ HAVE_STRUCT_RANDOM_DATA=1; AC_SUBST([HAVE_STRUCT_RANDOM_DATA])
+ HAVE_SYS_LOADAVG_H=0; AC_SUBST([HAVE_SYS_LOADAVG_H])
+ HAVE_UNLOCKPT=1; AC_SUBST([HAVE_UNLOCKPT])
+ HAVE_DECL_UNSETENV=1; AC_SUBST([HAVE_DECL_UNSETENV])
+ REPLACE_ALIGNED_ALLOC=0; AC_SUBST([REPLACE_ALIGNED_ALLOC])
+ REPLACE_CALLOC_FOR_CALLOC_GNU=0; AC_SUBST([REPLACE_CALLOC_FOR_CALLOC_GNU])
+ REPLACE_CALLOC_FOR_CALLOC_POSIX=0; AC_SUBST([REPLACE_CALLOC_FOR_CALLOC_POSIX])
+ REPLACE_CANONICALIZE_FILE_NAME=0; AC_SUBST([REPLACE_CANONICALIZE_FILE_NAME])
+ REPLACE_FREE=0; AC_SUBST([REPLACE_FREE])
+ REPLACE_INITSTATE=0; AC_SUBST([REPLACE_INITSTATE])
+ REPLACE_MALLOC_FOR_MALLOC_GNU=0; AC_SUBST([REPLACE_MALLOC_FOR_MALLOC_GNU])
+ REPLACE_MALLOC_FOR_MALLOC_POSIX=0; AC_SUBST([REPLACE_MALLOC_FOR_MALLOC_POSIX])
+ REPLACE_MBTOWC=0; AC_SUBST([REPLACE_MBTOWC])
+ REPLACE_MKSTEMP=0; AC_SUBST([REPLACE_MKSTEMP])
+ REPLACE_POSIX_MEMALIGN=0; AC_SUBST([REPLACE_POSIX_MEMALIGN])
+ REPLACE_PTSNAME=0; AC_SUBST([REPLACE_PTSNAME])
+ REPLACE_PTSNAME_R=0; AC_SUBST([REPLACE_PTSNAME_R])
+ REPLACE_PUTENV=0; AC_SUBST([REPLACE_PUTENV])
+ REPLACE_QSORT_R=0; AC_SUBST([REPLACE_QSORT_R])
+ REPLACE_RANDOM=0; AC_SUBST([REPLACE_RANDOM])
+ REPLACE_RANDOM_R=0; AC_SUBST([REPLACE_RANDOM_R])
+ REPLACE_REALLOC_FOR_REALLOC_GNU=0; AC_SUBST([REPLACE_REALLOC_FOR_REALLOC_GNU])
+ REPLACE_REALLOC_FOR_REALLOC_POSIX=0; AC_SUBST([REPLACE_REALLOC_FOR_REALLOC_POSIX])
+ REPLACE_REALLOCARRAY=0; AC_SUBST([REPLACE_REALLOCARRAY])
+ REPLACE_REALPATH=0; AC_SUBST([REPLACE_REALPATH])
+ REPLACE_SETENV=0; AC_SUBST([REPLACE_SETENV])
+ REPLACE_SETSTATE=0; AC_SUBST([REPLACE_SETSTATE])
+ REPLACE_STRTOD=0; AC_SUBST([REPLACE_STRTOD])
+ REPLACE_STRTOL=0; AC_SUBST([REPLACE_STRTOL])
+ REPLACE_STRTOLD=0; AC_SUBST([REPLACE_STRTOLD])
+ REPLACE_STRTOLL=0; AC_SUBST([REPLACE_STRTOLL])
+ REPLACE_STRTOUL=0; AC_SUBST([REPLACE_STRTOUL])
+ REPLACE_STRTOULL=0; AC_SUBST([REPLACE_STRTOULL])
+ REPLACE_UNSETENV=0; AC_SUBST([REPLACE_UNSETENV])
+ REPLACE_WCTOMB=0; AC_SUBST([REPLACE_WCTOMB])
+])
diff --git a/m4/string_h.m4 b/m4/string_h.m4
new file mode 100644
index 0000000..9e09b96
--- /dev/null
+++ b/m4/string_h.m4
@@ -0,0 +1,145 @@
+# Configure a GNU-like replacement for <string.h>.
+
+# Copyright (C) 2007-2022 Free Software Foundation, Inc.
+# This file is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# serial 34
+
+# Written by Paul Eggert.
+
+AC_DEFUN_ONCE([gl_STRING_H],
+[
+ dnl Ensure to expand the default settings once only, before all statements
+ dnl that occur in other macros.
+ AC_REQUIRE([gl_STRING_H_DEFAULTS])
+ gl_NEXT_HEADERS([string.h])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use, and which is not
+ dnl guaranteed by C89.
+ gl_WARN_ON_USE_PREPARE([[#include <string.h>
+ ]],
+ [ffsl ffsll memmem mempcpy memrchr rawmemchr stpcpy stpncpy strchrnul
+ strdup strncat strndup strnlen strpbrk strsep strcasestr strtok_r
+ strerror_r strerrorname_np sigabbrev_np sigdescr_np strsignal strverscmp])
+
+ AC_REQUIRE([AC_C_RESTRICT])
+])
+
+# gl_STRING_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_STRING_MODULE_INDICATOR],
+[
+ dnl Ensure to expand the default settings once only.
+ gl_STRING_H_REQUIRE_DEFAULTS
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_STRING_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_STRING_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXPLICIT_BZERO])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FFSL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FFSLL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMCHR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMMEM])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMPCPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MEMRCHR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RAWMEMCHR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STPCPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STPNCPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRCHRNUL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRDUP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRNCAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRNDUP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRNLEN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRPBRK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRSEP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRSTR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRCASESTR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRTOK_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSLEN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSNLEN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCHR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSRCHR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSSTR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCASECMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSNCASECMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSPCASECMP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCASESTR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSCSPN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSPBRK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSSPN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSSEP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MBSTOK_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRERROR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRERROR_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRERRORNAME_NP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGABBREV_NP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SIGDESCR_NP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRSIGNAL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_STRVERSCMP])
+ dnl Support Microsoft deprecated alias function names by default.
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_MEMCCPY], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_STRDUP], [1])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_STRING_H_MODULE_INDICATOR_DEFAULTS])
+ dnl Make sure the shell variable for GNULIB_FREE_POSIX is initialized.
+ gl_STDLIB_H_REQUIRE_DEFAULTS
+ AC_REQUIRE([gl_STRING_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_STRING_H_DEFAULTS],
+[
+ HAVE_MBSLEN=0; AC_SUBST([HAVE_MBSLEN])
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE_EXPLICIT_BZERO=1; AC_SUBST([HAVE_EXPLICIT_BZERO])
+ HAVE_FFSL=1; AC_SUBST([HAVE_FFSL])
+ HAVE_FFSLL=1; AC_SUBST([HAVE_FFSLL])
+ HAVE_DECL_MEMMEM=1; AC_SUBST([HAVE_DECL_MEMMEM])
+ HAVE_MEMPCPY=1; AC_SUBST([HAVE_MEMPCPY])
+ HAVE_DECL_MEMRCHR=1; AC_SUBST([HAVE_DECL_MEMRCHR])
+ HAVE_RAWMEMCHR=1; AC_SUBST([HAVE_RAWMEMCHR])
+ HAVE_STPCPY=1; AC_SUBST([HAVE_STPCPY])
+ HAVE_STPNCPY=1; AC_SUBST([HAVE_STPNCPY])
+ HAVE_STRCHRNUL=1; AC_SUBST([HAVE_STRCHRNUL])
+ HAVE_DECL_STRDUP=1; AC_SUBST([HAVE_DECL_STRDUP])
+ HAVE_DECL_STRNDUP=1; AC_SUBST([HAVE_DECL_STRNDUP])
+ HAVE_DECL_STRNLEN=1; AC_SUBST([HAVE_DECL_STRNLEN])
+ HAVE_STRPBRK=1; AC_SUBST([HAVE_STRPBRK])
+ HAVE_STRSEP=1; AC_SUBST([HAVE_STRSEP])
+ HAVE_STRCASESTR=1; AC_SUBST([HAVE_STRCASESTR])
+ HAVE_DECL_STRTOK_R=1; AC_SUBST([HAVE_DECL_STRTOK_R])
+ HAVE_DECL_STRERROR_R=1; AC_SUBST([HAVE_DECL_STRERROR_R])
+ HAVE_STRERRORNAME_NP=1; AC_SUBST([HAVE_STRERRORNAME_NP])
+ HAVE_SIGABBREV_NP=1; AC_SUBST([HAVE_SIGABBREV_NP])
+ HAVE_SIGDESCR_NP=1; AC_SUBST([HAVE_SIGDESCR_NP])
+ HAVE_DECL_STRSIGNAL=1; AC_SUBST([HAVE_DECL_STRSIGNAL])
+ HAVE_STRVERSCMP=1; AC_SUBST([HAVE_STRVERSCMP])
+ REPLACE_FFSLL=0; AC_SUBST([REPLACE_FFSLL])
+ REPLACE_MEMCHR=0; AC_SUBST([REPLACE_MEMCHR])
+ REPLACE_MEMMEM=0; AC_SUBST([REPLACE_MEMMEM])
+ REPLACE_STPNCPY=0; AC_SUBST([REPLACE_STPNCPY])
+ REPLACE_STRCHRNUL=0; AC_SUBST([REPLACE_STRCHRNUL])
+ REPLACE_STRDUP=0; AC_SUBST([REPLACE_STRDUP])
+ REPLACE_STRNCAT=0; AC_SUBST([REPLACE_STRNCAT])
+ REPLACE_STRNDUP=0; AC_SUBST([REPLACE_STRNDUP])
+ REPLACE_STRNLEN=0; AC_SUBST([REPLACE_STRNLEN])
+ REPLACE_STRSTR=0; AC_SUBST([REPLACE_STRSTR])
+ REPLACE_STRCASESTR=0; AC_SUBST([REPLACE_STRCASESTR])
+ REPLACE_STRTOK_R=0; AC_SUBST([REPLACE_STRTOK_R])
+ REPLACE_STRERROR=0; AC_SUBST([REPLACE_STRERROR])
+ REPLACE_STRERROR_R=0; AC_SUBST([REPLACE_STRERROR_R])
+ REPLACE_STRERRORNAME_NP=0; AC_SUBST([REPLACE_STRERRORNAME_NP])
+ REPLACE_STRSIGNAL=0; AC_SUBST([REPLACE_STRSIGNAL])
+ UNDEFINE_STRTOK_R=0; AC_SUBST([UNDEFINE_STRTOK_R])
+])
diff --git a/m4/strverscmp.m4 b/m4/strverscmp.m4
new file mode 100644
index 0000000..cb273dd
--- /dev/null
+++ b/m4/strverscmp.m4
@@ -0,0 +1,22 @@
+# strverscmp.m4 serial 9
+dnl Copyright (C) 2002, 2005-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_FUNC_STRVERSCMP],
+[
+ dnl Persuade glibc <string.h> to declare strverscmp().
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+
+ AC_REQUIRE([gl_STRING_H_DEFAULTS])
+ AC_CHECK_FUNCS([strverscmp])
+ if test $ac_cv_func_strverscmp = no; then
+ HAVE_STRVERSCMP=0
+ fi
+])
+
+# Prerequisites of lib/strverscmp.c.
+AC_DEFUN([gl_PREREQ_STRVERSCMP], [
+ :
+])
diff --git a/m4/sys_types_h.m4 b/m4/sys_types_h.m4
new file mode 100644
index 0000000..a5bef22
--- /dev/null
+++ b/m4/sys_types_h.m4
@@ -0,0 +1,70 @@
+# sys_types_h.m4 serial 13
+dnl Copyright (C) 2011-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN_ONCE([gl_SYS_TYPES_H],
+[
+ AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
+
+ dnl Use sane struct stat types in OpenVMS 8.2 and later.
+ AC_DEFINE([_USE_STD_STAT], 1, [For standard stat data types on VMS.])
+
+ gl_NEXT_HEADERS([sys/types.h])
+
+ dnl Ensure the type pid_t gets defined.
+ AC_REQUIRE([AC_TYPE_PID_T])
+
+ dnl Ensure the type mode_t gets defined.
+ AC_REQUIRE([AC_TYPE_MODE_T])
+
+ dnl Whether to override the 'off_t' type.
+ AC_REQUIRE([gl_TYPE_OFF_T])
+
+ dnl Whether to override the 'dev_t' and 'ino_t' types.
+ m4_ifdef([gl_WINDOWS_STAT_INODES], [
+ AC_REQUIRE([gl_WINDOWS_STAT_INODES])
+ ], [
+ WINDOWS_STAT_INODES=0
+ ])
+ AC_SUBST([WINDOWS_STAT_INODES])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_SYS_TYPES_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_SYS_TYPE_H_MODULE_INDICATOR_DEFAULTS], [
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_SYS_TYPE_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_SYS_TYPES_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_SYS_TYPES_H_DEFAULTS],
+[
+])
+
+# This works around a buggy version in autoconf <= 2.69.
+# See <https://lists.gnu.org/r/autoconf/2016-08/msg00014.html>
+# The 2.70 version isn't quoted properly, so override it too.
+
+m4_version_prereq([2.70.1], [], [
+
+m4_undefine([AC_HEADER_MAJOR])
+AC_DEFUN([AC_HEADER_MAJOR],
+[AC_CHECK_HEADERS_ONCE([sys/types.h])
+AC_CHECK_HEADER([sys/mkdev.h],
+ [AC_DEFINE([MAJOR_IN_MKDEV], [1],
+ [Define to 1 if `major', `minor', and `makedev' are
+ declared in <mkdev.h>.])])
+if test $ac_cv_header_sys_mkdev_h = no; then
+ AC_CHECK_HEADER([sys/sysmacros.h],
+ [AC_DEFINE([MAJOR_IN_SYSMACROS], [1],
+ [Define to 1 if `major', `minor', and `makedev'
+ are declared in <sysmacros.h>.])])
+fi
+])# AC_HEADER_MAJOR
+
+])
diff --git a/m4/unistd_h.m4 b/m4/unistd_h.m4
new file mode 100644
index 0000000..4c66ccc
--- /dev/null
+++ b/m4/unistd_h.m4
@@ -0,0 +1,270 @@
+# unistd_h.m4 serial 90
+dnl Copyright (C) 2006-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Written by Simon Josefsson, Bruno Haible.
+
+AC_DEFUN_ONCE([gl_UNISTD_H],
+[
+ dnl Ensure to expand the default settings once only, before all statements
+ dnl that occur in other macros.
+ AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+
+ gl_CHECK_NEXT_HEADERS([unistd.h])
+ if test $ac_cv_header_unistd_h = yes; then
+ HAVE_UNISTD_H=1
+ else
+ HAVE_UNISTD_H=0
+ fi
+ AC_SUBST([HAVE_UNISTD_H])
+
+ dnl Ensure the type pid_t gets defined.
+ AC_REQUIRE([AC_TYPE_PID_T])
+
+ dnl Determine WINDOWS_64_BIT_OFF_T.
+ AC_REQUIRE([gl_TYPE_OFF_T])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+/* Some systems declare various items in the wrong headers. */
+#if !(defined __GLIBC__ && !defined __UCLIBC__)
+# include <fcntl.h>
+# include <stdio.h>
+# include <stdlib.h>
+# if defined _WIN32 && ! defined __CYGWIN__
+# include <io.h>
+# endif
+#endif
+ ]], [access chdir chown copy_file_range dup dup2 dup3 environ euidaccess
+ execl execle execlp execv execve execvp execvpe
+ faccessat fchdir
+ fchownat fdatasync fsync ftruncate getcwd getdomainname getdtablesize
+ getentropy getgroups gethostname getlogin getlogin_r getpagesize getpass
+ getusershell setusershell endusershell
+ group_member isatty lchown link linkat lseek pipe pipe2 pread pwrite
+ readlink readlinkat rmdir sethostname sleep symlink symlinkat
+ truncate ttyname_r unlink unlinkat usleep])
+
+ AC_REQUIRE([AC_C_RESTRICT])
+
+ AC_CHECK_DECLS_ONCE([execvpe])
+ if test $ac_cv_have_decl_execvpe = no; then
+ HAVE_DECL_EXECVPE=0
+ fi
+])
+
+# gl_UNISTD_MODULE_INDICATOR([modulename])
+# sets the shell variable that indicates the presence of the given module
+# to a C preprocessor expression that will evaluate to 1.
+# This macro invocation must not occur in macros that are AC_REQUIREd.
+AC_DEFUN([gl_UNISTD_MODULE_INDICATOR],
+[
+ dnl Ensure to expand the default settings once only.
+ gl_UNISTD_H_REQUIRE_DEFAULTS
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+# Initializes the default values for AC_SUBSTed shell variables.
+# This macro must not be AC_REQUIREd. It must only be invoked, and only
+# outside of macros or in macros that are not AC_REQUIREd.
+AC_DEFUN([gl_UNISTD_H_REQUIRE_DEFAULTS],
+[
+ m4_defun(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS], [
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ACCESS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHDIR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CHOWN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_CLOSE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_COPY_FILE_RANGE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP2])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_DUP3])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ENVIRON])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EUIDACCESS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECLP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECV])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_EXECVPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FACCESSAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHDIR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FCHOWNAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FDATASYNC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FSYNC])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_FTRUNCATE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETCWD])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDOMAINNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETDTABLESIZE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETENTROPY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETGROUPS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETHOSTNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETLOGIN_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETOPT_POSIX])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPAGESIZE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPASS])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETPASS_GNU])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GETUSERSHELL])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_GROUP_MEMBER])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_ISATTY])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LCHOWN])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_LSEEK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PIPE2])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PREAD])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_PWRITE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READ])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_READLINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_RMDIR])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SETHOSTNAME])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SLEEP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_SYMLINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TRUNCATE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_TTYNAME_R])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_GETOPT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_NONBLOCKING])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNISTD_H_SIGPIPE])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINK])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_UNLINKAT])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_USLEEP])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_WRITE])
+ dnl Support Microsoft deprecated alias function names by default.
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ACCESS], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CHDIR], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_CLOSE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_DUP2], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECL], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECLP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECV], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVP], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_EXECVPE], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETCWD], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_GETPID], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_ISATTY], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_LSEEK], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_READ], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_RMDIR], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_SWAB], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_UNLINK], [1])
+ gl_MODULE_INDICATOR_INIT_VARIABLE([GNULIB_MDA_WRITE], [1])
+ ])
+ m4_require(GL_MODULE_INDICATOR_PREFIX[_UNISTD_H_MODULE_INDICATOR_DEFAULTS])
+ AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+])
+
+AC_DEFUN([gl_UNISTD_H_DEFAULTS],
+[
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE_CHOWN=1; AC_SUBST([HAVE_CHOWN])
+ HAVE_COPY_FILE_RANGE=1; AC_SUBST([HAVE_COPY_FILE_RANGE])
+ HAVE_DUP3=1; AC_SUBST([HAVE_DUP3])
+ HAVE_EUIDACCESS=1; AC_SUBST([HAVE_EUIDACCESS])
+ HAVE_EXECVPE=1; AC_SUBST([HAVE_EXECVPE])
+ HAVE_FACCESSAT=1; AC_SUBST([HAVE_FACCESSAT])
+ HAVE_FCHDIR=1; AC_SUBST([HAVE_FCHDIR])
+ HAVE_FCHOWNAT=1; AC_SUBST([HAVE_FCHOWNAT])
+ HAVE_FDATASYNC=1; AC_SUBST([HAVE_FDATASYNC])
+ HAVE_FSYNC=1; AC_SUBST([HAVE_FSYNC])
+ HAVE_FTRUNCATE=1; AC_SUBST([HAVE_FTRUNCATE])
+ HAVE_GETDTABLESIZE=1; AC_SUBST([HAVE_GETDTABLESIZE])
+ HAVE_GETENTROPY=1; AC_SUBST([HAVE_GETENTROPY])
+ HAVE_GETGROUPS=1; AC_SUBST([HAVE_GETGROUPS])
+ HAVE_GETHOSTNAME=1; AC_SUBST([HAVE_GETHOSTNAME])
+ HAVE_GETLOGIN=1; AC_SUBST([HAVE_GETLOGIN])
+ HAVE_GETPAGESIZE=1; AC_SUBST([HAVE_GETPAGESIZE])
+ HAVE_GETPASS=1; AC_SUBST([HAVE_GETPASS])
+ HAVE_GROUP_MEMBER=1; AC_SUBST([HAVE_GROUP_MEMBER])
+ HAVE_LCHOWN=1; AC_SUBST([HAVE_LCHOWN])
+ HAVE_LINK=1; AC_SUBST([HAVE_LINK])
+ HAVE_LINKAT=1; AC_SUBST([HAVE_LINKAT])
+ HAVE_PIPE=1; AC_SUBST([HAVE_PIPE])
+ HAVE_PIPE2=1; AC_SUBST([HAVE_PIPE2])
+ HAVE_PREAD=1; AC_SUBST([HAVE_PREAD])
+ HAVE_PWRITE=1; AC_SUBST([HAVE_PWRITE])
+ HAVE_READLINK=1; AC_SUBST([HAVE_READLINK])
+ HAVE_READLINKAT=1; AC_SUBST([HAVE_READLINKAT])
+ HAVE_SETHOSTNAME=1; AC_SUBST([HAVE_SETHOSTNAME])
+ HAVE_SLEEP=1; AC_SUBST([HAVE_SLEEP])
+ HAVE_SYMLINK=1; AC_SUBST([HAVE_SYMLINK])
+ HAVE_SYMLINKAT=1; AC_SUBST([HAVE_SYMLINKAT])
+ HAVE_UNLINKAT=1; AC_SUBST([HAVE_UNLINKAT])
+ HAVE_USLEEP=1; AC_SUBST([HAVE_USLEEP])
+ HAVE_DECL_ENVIRON=1; AC_SUBST([HAVE_DECL_ENVIRON])
+ HAVE_DECL_EXECVPE=1; AC_SUBST([HAVE_DECL_EXECVPE])
+ HAVE_DECL_FCHDIR=1; AC_SUBST([HAVE_DECL_FCHDIR])
+ HAVE_DECL_FDATASYNC=1; AC_SUBST([HAVE_DECL_FDATASYNC])
+ HAVE_DECL_GETDOMAINNAME=1; AC_SUBST([HAVE_DECL_GETDOMAINNAME])
+ HAVE_DECL_GETLOGIN=1; AC_SUBST([HAVE_DECL_GETLOGIN])
+ HAVE_DECL_GETLOGIN_R=1; AC_SUBST([HAVE_DECL_GETLOGIN_R])
+ HAVE_DECL_GETPAGESIZE=1; AC_SUBST([HAVE_DECL_GETPAGESIZE])
+ HAVE_DECL_GETUSERSHELL=1; AC_SUBST([HAVE_DECL_GETUSERSHELL])
+ HAVE_DECL_SETHOSTNAME=1; AC_SUBST([HAVE_DECL_SETHOSTNAME])
+ HAVE_DECL_TRUNCATE=1; AC_SUBST([HAVE_DECL_TRUNCATE])
+ HAVE_DECL_TTYNAME_R=1; AC_SUBST([HAVE_DECL_TTYNAME_R])
+ HAVE_OS_H=0; AC_SUBST([HAVE_OS_H])
+ HAVE_SYS_PARAM_H=0; AC_SUBST([HAVE_SYS_PARAM_H])
+ REPLACE_ACCESS=0; AC_SUBST([REPLACE_ACCESS])
+ REPLACE_CHOWN=0; AC_SUBST([REPLACE_CHOWN])
+ REPLACE_CLOSE=0; AC_SUBST([REPLACE_CLOSE])
+ REPLACE_COPY_FILE_RANGE=0; AC_SUBST([REPLACE_COPY_FILE_RANGE])
+ REPLACE_DUP=0; AC_SUBST([REPLACE_DUP])
+ REPLACE_DUP2=0; AC_SUBST([REPLACE_DUP2])
+ REPLACE_EXECL=0; AC_SUBST([REPLACE_EXECL])
+ REPLACE_EXECLE=0; AC_SUBST([REPLACE_EXECLE])
+ REPLACE_EXECLP=0; AC_SUBST([REPLACE_EXECLP])
+ REPLACE_EXECV=0; AC_SUBST([REPLACE_EXECV])
+ REPLACE_EXECVE=0; AC_SUBST([REPLACE_EXECVE])
+ REPLACE_EXECVP=0; AC_SUBST([REPLACE_EXECVP])
+ REPLACE_EXECVPE=0; AC_SUBST([REPLACE_EXECVPE])
+ REPLACE_FACCESSAT=0; AC_SUBST([REPLACE_FACCESSAT])
+ REPLACE_FCHOWNAT=0; AC_SUBST([REPLACE_FCHOWNAT])
+ REPLACE_FTRUNCATE=0; AC_SUBST([REPLACE_FTRUNCATE])
+ REPLACE_GETCWD=0; AC_SUBST([REPLACE_GETCWD])
+ REPLACE_GETDOMAINNAME=0; AC_SUBST([REPLACE_GETDOMAINNAME])
+ REPLACE_GETDTABLESIZE=0; AC_SUBST([REPLACE_GETDTABLESIZE])
+ REPLACE_GETLOGIN_R=0; AC_SUBST([REPLACE_GETLOGIN_R])
+ REPLACE_GETGROUPS=0; AC_SUBST([REPLACE_GETGROUPS])
+ REPLACE_GETPAGESIZE=0; AC_SUBST([REPLACE_GETPAGESIZE])
+ REPLACE_GETPASS=0; AC_SUBST([REPLACE_GETPASS])
+ REPLACE_GETPASS_FOR_GETPASS_GNU=0; AC_SUBST([REPLACE_GETPASS_FOR_GETPASS_GNU])
+ REPLACE_ISATTY=0; AC_SUBST([REPLACE_ISATTY])
+ REPLACE_LCHOWN=0; AC_SUBST([REPLACE_LCHOWN])
+ REPLACE_LINK=0; AC_SUBST([REPLACE_LINK])
+ REPLACE_LINKAT=0; AC_SUBST([REPLACE_LINKAT])
+ REPLACE_LSEEK=0; AC_SUBST([REPLACE_LSEEK])
+ REPLACE_PREAD=0; AC_SUBST([REPLACE_PREAD])
+ REPLACE_PWRITE=0; AC_SUBST([REPLACE_PWRITE])
+ REPLACE_READ=0; AC_SUBST([REPLACE_READ])
+ REPLACE_READLINK=0; AC_SUBST([REPLACE_READLINK])
+ REPLACE_READLINKAT=0; AC_SUBST([REPLACE_READLINKAT])
+ REPLACE_RMDIR=0; AC_SUBST([REPLACE_RMDIR])
+ REPLACE_SLEEP=0; AC_SUBST([REPLACE_SLEEP])
+ REPLACE_SYMLINK=0; AC_SUBST([REPLACE_SYMLINK])
+ REPLACE_SYMLINKAT=0; AC_SUBST([REPLACE_SYMLINKAT])
+ REPLACE_TRUNCATE=0; AC_SUBST([REPLACE_TRUNCATE])
+ REPLACE_TTYNAME_R=0; AC_SUBST([REPLACE_TTYNAME_R])
+ REPLACE_UNLINK=0; AC_SUBST([REPLACE_UNLINK])
+ REPLACE_UNLINKAT=0; AC_SUBST([REPLACE_UNLINKAT])
+ REPLACE_USLEEP=0; AC_SUBST([REPLACE_USLEEP])
+ REPLACE_WRITE=0; AC_SUBST([REPLACE_WRITE])
+ UNISTD_H_HAVE_SYS_RANDOM_H=0; AC_SUBST([UNISTD_H_HAVE_SYS_RANDOM_H])
+ UNISTD_H_HAVE_WINSOCK2_H=0; AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H])
+ UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS=0;
+ AC_SUBST([UNISTD_H_HAVE_WINSOCK2_H_AND_USE_SOCKETS])
+])
diff --git a/m4/valgrind-tests.m4 b/m4/valgrind-tests.m4
new file mode 100644
index 0000000..a8d5a62
--- /dev/null
+++ b/m4/valgrind-tests.m4
@@ -0,0 +1,103 @@
+# valgrind-tests.m4 serial 8
+dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Simon Josefsson
+
+# gl_VALGRIND_TESTS()
+# -------------------
+# Check if valgrind is available.
+
+# Sets VALGRIND to command line (including options) to invoke valgrind
+# with, may be used directly in autoconf, makefiles or shell scripts.
+
+# Sets LOG_VALGRIND, suitable for use with LOG_COMPILER, that in
+# Makefile will expand to command line to invoke self-tests with,
+# i.e., LOG_VALGRIND = $(VALGRIND) $(DEFAULT_VALGRINDFLAGS)
+# $(VALGRINDFLAGS) $(AM_VALGRINDFLAGS).
+
+# Whether to look for valgrind and set the variables can be influenced
+# by calling gl_VALGRIND_TESTS_DEFAULT_NO in configure.ac.
+# Regardless, the user can change the choice through the options
+# --enable-valgrind-tests or --disable-valgrind-tests.
+
+# You may modify the VALGRIND, DEFAULT_VALGRINDFLAGS and VALGRINDFLAGS
+# variables before calling this function to override defaults. Either
+# as developer from configure.ac or user on the ./configure command
+# line. You may set the AM_VALGRINDFLAGS in Makefile.am to provide a
+# per-directory additional flag.
+
+AC_DEFUN([gl_VALGRIND_TESTS_DEFAULT_NO],
+[
+ gl_valgrind_tests_default=no
+])
+
+AC_DEFUN_ONCE([gl_VALGRIND_TESTS],
+[
+ AC_ARG_ENABLE([valgrind-tests],
+ AS_HELP_STRING([--disable-valgrind-tests],
+ [don't try to run self tests under valgrind]),
+ [opt_valgrind_tests=$enableval], [opt_valgrind_tests=${gl_valgrind_tests_default:-yes}])
+
+ # Run self-tests under valgrind?
+ if test "$opt_valgrind_tests" = "yes" && test "$cross_compiling" = no; then
+ AC_CHECK_PROGS([VALGRIND], [valgrind])
+
+ # VALGRIND_PROGRAM contains the tool found by AC_CHECK_PROGS. For
+ # backwards compatibility, the VALGRIND variable is later modified
+ # to also include all enabled options. However the new variable
+ # LOG_VALGRIND needs to be able to refer to the valgrind tool
+ # without options, hence it uses this variable.
+ AC_SUBST([VALGRIND_PROGRAM], [$VALGRIND])
+
+ AC_SUBST([DEFAULT_VALGRINDFLAGS])
+ if test -z "$DEFAULT_VALGRINDFLAGS"; then
+ DEFAULT_VALGRINDFLAGS="-q --error-exitcode=1 --leak-check=full"
+ fi
+ AC_ARG_VAR([VALGRINDFLAGS], [Additional flags for Valgrind])
+
+ if test -n "$VALGRIND"; then
+ AC_CACHE_CHECK([for valgrind options for tests],
+ [gl_cv_opt_valgrind_tests],
+ [AS_IF([$VALGRIND $DEFAULT_VALGRINDFLAGS $VALGRINDFLAGS true],
+ [gl_cv_opt_valgrind_tests="$DEFAULT_VALGRINDFLAGS $VALGRINDFLAGS"],
+ [gl_cv_opt_valgrind_tests=no])
+ ])
+ if test "$gl_cv_opt_valgrind_tests" != no; then
+ VALGRIND="$VALGRIND $gl_cv_opt_valgrind_tests"
+ fi
+ fi
+
+ if test -n "$VALGRIND"; then
+ dnl On Ubuntu 16.04, /usr/bin/valgrind works only on 64-bit executables
+ dnl but fails on 32-bit executables (with exit code 1) and on x86_64-x32
+ dnl executables (with exit code 126).
+ AC_CACHE_CHECK([whether valgrind works on executables produced by the compiler],
+ [gl_cv_prog_valgrind_works],
+ [AC_RUN_IFELSE(
+ [AC_LANG_SOURCE([[int main () { return 0; }]])],
+ [$VALGRIND $gl_cv_opt_valgrind_tests ./conftest$ac_exeext 2>/dev/null
+ if test $? = 0; then
+ gl_cv_prog_valgrind_works=yes
+ else
+ gl_cv_prog_valgrind_works=no
+ fi
+ ],
+ [gl_cv_prog_valgrind_works=no])
+ ])
+ fi
+
+ AC_SUBST([AM_VALGRINDFLAGS])
+ AC_SUBST([LOG_VALGRIND], ["\$(VALGRIND_PROGRAM) \$(DEFAULT_VALGRINDFLAGS) \$(VALGRINDFLAGS) \$(AM_VALGRINDFLAGS)"])
+
+ if test "$gl_cv_prog_valgrind_works" != yes; then
+ DEFAULT_VALGRINDFLAGS=
+ LOG_VALGRIND=
+ VALGRIND=
+ VALGRINDFLAGS=
+ VALGRIND_PROGRAM=
+ fi
+ fi
+])
diff --git a/m4/visibility.m4 b/m4/visibility.m4
new file mode 100644
index 0000000..4a212a4
--- /dev/null
+++ b/m4/visibility.m4
@@ -0,0 +1,82 @@
+# visibility.m4 serial 8
+dnl Copyright (C) 2005, 2008, 2010-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+dnl Tests whether the compiler supports the command-line option
+dnl -fvisibility=hidden and the function and variable attributes
+dnl __attribute__((__visibility__("hidden"))) and
+dnl __attribute__((__visibility__("default"))).
+dnl Does *not* test for __visibility__("protected") - which has tricky
+dnl semantics (see the 'vismain' test in glibc) and does not exist e.g. on
+dnl Mac OS X.
+dnl Does *not* test for __visibility__("internal") - which has processor
+dnl dependent semantics.
+dnl Does *not* test for #pragma GCC visibility push(hidden) - which is
+dnl "really only recommended for legacy code".
+dnl Set the variable CFLAG_VISIBILITY.
+dnl Defines and sets the variable HAVE_VISIBILITY.
+
+AC_DEFUN([gl_VISIBILITY],
+[
+ AC_REQUIRE([AC_PROG_CC])
+ CFLAG_VISIBILITY=
+ HAVE_VISIBILITY=0
+ if test -n "$GCC"; then
+ dnl First, check whether -Werror can be added to the command line, or
+ dnl whether it leads to an error because of some other option that the
+ dnl user has put into $CC $CFLAGS $CPPFLAGS.
+ AC_CACHE_CHECK([whether the -Werror option is usable],
+ [gl_cv_cc_vis_werror],
+ [gl_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -Werror"
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM([[]], [[]])],
+ [gl_cv_cc_vis_werror=yes],
+ [gl_cv_cc_vis_werror=no])
+ CFLAGS="$gl_save_CFLAGS"
+ ])
+ dnl Now check whether visibility declarations are supported.
+ AC_CACHE_CHECK([for simple visibility declarations],
+ [gl_cv_cc_visibility],
+ [gl_save_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS -fvisibility=hidden"
+ dnl We use the option -Werror and a function dummyfunc, because on some
+ dnl platforms (Cygwin 1.7) the use of -fvisibility triggers a warning
+ dnl "visibility attribute not supported in this configuration; ignored"
+ dnl at the first function definition in every compilation unit, and we
+ dnl don't want to use the option in this case.
+ if test $gl_cv_cc_vis_werror = yes; then
+ CFLAGS="$CFLAGS -Werror"
+ fi
+ AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[extern __attribute__((__visibility__("hidden"))) int hiddenvar;
+ extern __attribute__((__visibility__("default"))) int exportedvar;
+ extern __attribute__((__visibility__("hidden"))) int hiddenfunc (void);
+ extern __attribute__((__visibility__("default"))) int exportedfunc (void);
+ void dummyfunc (void);
+ int hiddenvar;
+ int exportedvar;
+ int hiddenfunc (void) { return 51; }
+ int exportedfunc (void) { return 1225736919; }
+ void dummyfunc (void) {}
+ ]],
+ [[]])],
+ [gl_cv_cc_visibility=yes],
+ [gl_cv_cc_visibility=no])
+ CFLAGS="$gl_save_CFLAGS"
+ ])
+ if test $gl_cv_cc_visibility = yes; then
+ CFLAG_VISIBILITY="-fvisibility=hidden"
+ HAVE_VISIBILITY=1
+ fi
+ fi
+ AC_SUBST([CFLAG_VISIBILITY])
+ AC_SUBST([HAVE_VISIBILITY])
+ AC_DEFINE_UNQUOTED([HAVE_VISIBILITY], [$HAVE_VISIBILITY],
+ [Define to 1 or 0, depending whether the compiler supports simple visibility declarations.])
+])
diff --git a/m4/warn-on-use.m4 b/m4/warn-on-use.m4
new file mode 100644
index 0000000..d43355a
--- /dev/null
+++ b/m4/warn-on-use.m4
@@ -0,0 +1,49 @@
+# warn-on-use.m4 serial 9
+dnl Copyright (C) 2010-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+# gl_WARN_ON_USE_PREPARE(INCLUDES, NAMES)
+# ---------------------------------------
+# If the module 'posixcheck' is in use:
+#
+# For each whitespace-separated element in the list of NAMES, define
+# HAVE_RAW_DECL_name if the function has a declaration among INCLUDES
+# even after being undefined as a macro.
+#
+# See warn-on-use.h for some hints on how to poison function names, as
+# well as ideas on poisoning global variables and macros. NAMES may
+# include global variables, but remember that only functions work with
+# _GL_WARN_ON_USE. Typically, INCLUDES only needs to list a single
+# header, but if the replacement header pulls in other headers because
+# some systems declare functions in the wrong header, then INCLUDES
+# should do likewise.
+#
+# It is generally safe to assume declarations for functions declared
+# in the intersection of C89 and C11 (such as printf) without
+# needing gl_WARN_ON_USE_PREPARE.
+AC_DEFUN([gl_WARN_ON_USE_PREPARE],
+[
+ m4_ifdef([gl_POSIXCHECK],
+ [m4_foreach_w([gl_decl], [$2],
+ [AH_TEMPLATE([HAVE_RAW_DECL_]AS_TR_CPP(m4_defn([gl_decl])),
+ [Define to 1 if ]m4_defn([gl_decl])[ is declared even after
+ undefining macros.])])dnl
+ for gl_func in m4_flatten([$2]); do
+ AS_VAR_PUSHDEF([gl_Symbol], [gl_cv_have_raw_decl_$gl_func])dnl
+ AC_CACHE_CHECK([whether $gl_func is declared without a macro],
+ [gl_Symbol],
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([$1],
+[[#undef $gl_func
+ (void) $gl_func;]])],
+ [AS_VAR_SET([gl_Symbol], [yes])], [AS_VAR_SET([gl_Symbol], [no])])])
+ AS_VAR_IF([gl_Symbol], [yes],
+ [AC_DEFINE_UNQUOTED(AS_TR_CPP([HAVE_RAW_DECL_$gl_func]), [1])
+ dnl shortcut - if the raw declaration exists, then set a cache
+ dnl variable to allow skipping any later AC_CHECK_DECL efforts
+ eval ac_cv_have_decl_$gl_func=yes])
+ AS_VAR_POPDEF([gl_Symbol])dnl
+ done
+ ])
+])
diff --git a/m4/warnings.m4 b/m4/warnings.m4
new file mode 100644
index 0000000..60088f9
--- /dev/null
+++ b/m4/warnings.m4
@@ -0,0 +1,110 @@
+# warnings.m4 serial 16
+dnl Copyright (C) 2008-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Simon Josefsson
+
+# gl_AS_VAR_APPEND(VAR, VALUE)
+# ----------------------------
+# Provide the functionality of AS_VAR_APPEND if Autoconf does not have it.
+m4_ifdef([AS_VAR_APPEND],
+[m4_copy([AS_VAR_APPEND], [gl_AS_VAR_APPEND])],
+[m4_define([gl_AS_VAR_APPEND],
+[AS_VAR_SET([$1], [AS_VAR_GET([$1])$2])])])
+
+
+# gl_COMPILER_OPTION_IF(OPTION, [IF-SUPPORTED], [IF-NOT-SUPPORTED],
+# [PROGRAM = AC_LANG_PROGRAM()])
+# -----------------------------------------------------------------
+# Check if the compiler supports OPTION when compiling PROGRAM.
+#
+# The effects of this macro depend on the current language (_AC_LANG).
+AC_DEFUN([gl_COMPILER_OPTION_IF],
+[
+AS_VAR_PUSHDEF([gl_Warn], [gl_cv_warn_[]_AC_LANG_ABBREV[]_$1])dnl
+AS_VAR_PUSHDEF([gl_Flags], [_AC_LANG_PREFIX[]FLAGS])dnl
+AS_LITERAL_IF([$1],
+ [m4_pushdef([gl_Positive], m4_bpatsubst([$1], [^-Wno-], [-W]))],
+ [gl_positive="$1"
+case $gl_positive in
+ -Wno-*) gl_positive=-W`expr "X$gl_positive" : 'X-Wno-\(.*\)'` ;;
+esac
+m4_pushdef([gl_Positive], [$gl_positive])])dnl
+AC_CACHE_CHECK([whether _AC_LANG compiler handles $1], [gl_Warn], [
+ gl_save_compiler_FLAGS="$gl_Flags"
+ gl_AS_VAR_APPEND(m4_defn([gl_Flags]),
+ [" $gl_unknown_warnings_are_errors ]m4_defn([gl_Positive])["])
+ AC_LINK_IFELSE([m4_default([$4], [AC_LANG_PROGRAM([[]])])],
+ [AS_VAR_SET([gl_Warn], [yes])],
+ [AS_VAR_SET([gl_Warn], [no])])
+ gl_Flags="$gl_save_compiler_FLAGS"
+])
+AS_VAR_IF(gl_Warn, [yes], [$2], [$3])
+m4_popdef([gl_Positive])dnl
+AS_VAR_POPDEF([gl_Flags])dnl
+AS_VAR_POPDEF([gl_Warn])dnl
+])
+
+# gl_UNKNOWN_WARNINGS_ARE_ERRORS
+# ------------------------------
+# Clang doesn't complain about unknown warning options unless one also
+# specifies -Wunknown-warning-option -Werror. Detect this.
+#
+# The effects of this macro depend on the current language (_AC_LANG).
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS],
+[_AC_LANG_DISPATCH([$0], _AC_LANG, $@)])
+
+# Specialization for _AC_LANG = C. This macro can be AC_REQUIREd.
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS(C)],
+[
+ AC_LANG_PUSH([C])
+ gl_UNKNOWN_WARNINGS_ARE_ERRORS_IMPL
+ AC_LANG_POP([C])
+])
+
+# Specialization for _AC_LANG = C++. This macro can be AC_REQUIREd.
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS(C++)],
+[
+ AC_LANG_PUSH([C++])
+ gl_UNKNOWN_WARNINGS_ARE_ERRORS_IMPL
+ AC_LANG_POP([C++])
+])
+
+# Specialization for _AC_LANG = Objective C. This macro can be AC_REQUIREd.
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS(Objective C)],
+[
+ AC_LANG_PUSH([Objective C])
+ gl_UNKNOWN_WARNINGS_ARE_ERRORS_IMPL
+ AC_LANG_POP([Objective C])
+])
+
+AC_DEFUN([gl_UNKNOWN_WARNINGS_ARE_ERRORS_IMPL],
+[gl_COMPILER_OPTION_IF([-Werror -Wunknown-warning-option],
+ [gl_unknown_warnings_are_errors='-Wunknown-warning-option -Werror'],
+ [gl_unknown_warnings_are_errors=])])
+
+# gl_WARN_ADD(OPTION, [VARIABLE = WARN_CFLAGS/WARN_CXXFLAGS],
+# [PROGRAM = AC_LANG_PROGRAM()])
+# -----------------------------------------------------------
+# Adds parameter to WARN_CFLAGS/WARN_CXXFLAGS if the compiler supports it
+# when compiling PROGRAM. For example, gl_WARN_ADD([-Wparentheses]).
+#
+# If VARIABLE is a variable name, AC_SUBST it.
+#
+# The effects of this macro depend on the current language (_AC_LANG).
+AC_DEFUN([gl_WARN_ADD],
+[AC_REQUIRE([gl_UNKNOWN_WARNINGS_ARE_ERRORS(]_AC_LANG[)])
+gl_COMPILER_OPTION_IF([$1],
+ [gl_AS_VAR_APPEND(m4_if([$2], [], [[WARN_]_AC_LANG_PREFIX[FLAGS]], [[$2]]), [" $1"])],
+ [],
+ [$3])
+m4_ifval([$2],
+ [AS_LITERAL_IF([$2], [AC_SUBST([$2])])],
+ [AC_SUBST([WARN_]_AC_LANG_PREFIX[FLAGS])])dnl
+])
+
+# Local Variables:
+# mode: autoconf
+# End:
diff --git a/m4/wchar_t.m4 b/m4/wchar_t.m4
new file mode 100644
index 0000000..268e3e5
--- /dev/null
+++ b/m4/wchar_t.m4
@@ -0,0 +1,24 @@
+# wchar_t.m4 serial 4 (gettext-0.18.2)
+dnl Copyright (C) 2002-2003, 2008-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Test whether <stddef.h> has the 'wchar_t' type.
+dnl Prerequisite: AC_PROG_CC
+
+AC_DEFUN([gt_TYPE_WCHAR_T],
+[
+ AC_CACHE_CHECK([for wchar_t], [gt_cv_c_wchar_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <stddef.h>
+ wchar_t foo = (wchar_t)'\0';]],
+ [[]])],
+ [gt_cv_c_wchar_t=yes],
+ [gt_cv_c_wchar_t=no])])
+ if test $gt_cv_c_wchar_t = yes; then
+ AC_DEFINE([HAVE_WCHAR_T], [1], [Define if you have the 'wchar_t' type.])
+ fi
+])
diff --git a/m4/wint_t.m4 b/m4/wint_t.m4
new file mode 100644
index 0000000..adc5866
--- /dev/null
+++ b/m4/wint_t.m4
@@ -0,0 +1,57 @@
+# wint_t.m4 serial 11
+dnl Copyright (C) 2003, 2007-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+dnl Test whether <wchar.h> has the 'wint_t' type and whether gnulib's
+dnl <wchar.h> or <wctype.h> would, if present, override 'wint_t'.
+dnl Prerequisite: AC_PROG_CC
+
+AC_DEFUN([gt_TYPE_WINT_T],
+[
+ AC_CACHE_CHECK([for wint_t], [gt_cv_c_wint_t],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <wchar.h>
+ wint_t foo = (wchar_t)'\0';]],
+ [[]])],
+ [gt_cv_c_wint_t=yes],
+ [gt_cv_c_wint_t=no])])
+ if test $gt_cv_c_wint_t = yes; then
+ AC_DEFINE([HAVE_WINT_T], [1], [Define if you have the 'wint_t' type.])
+
+ dnl Determine whether gnulib's <wchar.h> or <wctype.h> would, if present,
+ dnl override 'wint_t'.
+ AC_CACHE_CHECK([whether wint_t is large enough],
+ [gl_cv_type_wint_t_large_enough],
+ [AC_COMPILE_IFELSE(
+ [AC_LANG_PROGRAM(
+ [[#include <wchar.h>
+ int verify[sizeof (wint_t) < sizeof (int) ? -1 : 1];
+ ]])],
+ [gl_cv_type_wint_t_large_enough=yes],
+ [gl_cv_type_wint_t_large_enough=no])])
+ if test $gl_cv_type_wint_t_large_enough = no; then
+ GNULIBHEADERS_OVERRIDE_WINT_T=1
+ else
+ GNULIBHEADERS_OVERRIDE_WINT_T=0
+ fi
+ else
+ GNULIBHEADERS_OVERRIDE_WINT_T=0
+ fi
+ AC_SUBST([GNULIBHEADERS_OVERRIDE_WINT_T])
+])
+
+dnl Prerequisites of the 'wint_t' override.
+AC_DEFUN([gl_TYPE_WINT_T_PREREQ],
+[
+ AC_CHECK_HEADERS_ONCE([crtdefs.h])
+ if test $ac_cv_header_crtdefs_h = yes; then
+ HAVE_CRTDEFS_H=1
+ else
+ HAVE_CRTDEFS_H=0
+ fi
+ AC_SUBST([HAVE_CRTDEFS_H])
+])
diff --git a/m4/zzgnulib.m4 b/m4/zzgnulib.m4
new file mode 100644
index 0000000..fd73a20
--- /dev/null
+++ b/m4/zzgnulib.m4
@@ -0,0 +1,23 @@
+# zzgnulib.m4 serial 1
+dnl Copyright (C) 2020-2022 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl This file must be named something that sorts after all other
+dnl package- or gnulib-provided .m4 files - at least for those packages
+dnl that redefine AC_PROG_CC.
+
+dnl Redefine AC_PROG_CC so that it ends with invocations of gl_COMPILER_CLANG
+dnl and gl_COMPILER_PREPARE_CHECK_DECL.
+m4_define([AC_PROG_CC],
+ m4_defn([AC_PROG_CC])[
+gl_COMPILER_CLANG
+gl_COMPILER_PREPARE_CHECK_DECL
+])
+
+# gl_ZZGNULIB
+# -----------
+# Witness macro that this file has been included. Needed to force
+# Automake to include this file after all other gnulib .m4 files.
+AC_DEFUN([gl_ZZGNULIB])
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 00:09:19 +0000