diff options
Diffstat (limited to 'm4-gl/gnulib-common.m4')
| -rw-r--r-- | m4-gl/gnulib-common.m4 | 424 |
1 files changed, 0 insertions, 424 deletions
diff --git a/m4-gl/gnulib-common.m4 b/m4-gl/gnulib-common.m4 deleted file mode 100644 index 57b94ed..0000000 --- a/m4-gl/gnulib-common.m4 +++ /dev/null @@ -1,424 +0,0 @@ -# gnulib-common.m4 serial 44 -dnl Copyright (C) 2007-2019 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_DEFUN([gl_COMMON_BODY], [ - 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))) -# define _Noreturn [[noreturn]] -# elif ((!defined __cplusplus || defined __clang__) \ - && (201112 <= (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) \ - || 4 < __GNUC__ + (7 <= __GNUC_MINOR__))) - /* _Noreturn works as-is. */ -# elif 2 < __GNUC__ + (8 <= __GNUC_MINOR__) || 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([unused_parameter], -[/* Define as a marker that can be attached to declarations that might not - be used. This helps to reduce warnings, such as from - GCC -Wunused-parameter. */ -#if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7) -# define _GL_UNUSED __attribute__ ((__unused__)) -#else -# define _GL_UNUSED -#endif -/* The name _UNUSED_PARAMETER_ is an earlier spelling, although the name - is a misnomer outside of parameter lists. */ -#define _UNUSED_PARAMETER_ _GL_UNUSED - -/* gcc supports the "unused" attribute on possibly unused labels, and - g++ has since version 4.5. Note to support C++ as well as C, - _GL_UNUSED_LABEL should be used with a trailing ; */ -#if !defined __cplusplus || __GNUC__ > 4 \ - || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5) -# define _GL_UNUSED_LABEL _GL_UNUSED -#else -# define _GL_UNUSED_LABEL -#endif - -/* The __pure__ attribute was added in gcc 2.96. */ -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96) -# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__)) -#else -# define _GL_ATTRIBUTE_PURE /* empty */ -#endif - -/* The __const__ attribute was added in gcc 2.95. */ -#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95) -# define _GL_ATTRIBUTE_CONST __attribute__ ((__const__)) -#else -# define _GL_ATTRIBUTE_CONST /* empty */ -#endif - -/* The __malloc__ attribute was added in gcc 3. */ -#if 3 <= __GNUC__ -# define _GL_ATTRIBUTE_MALLOC __attribute__ ((__malloc__)) -#else -# define _GL_ATTRIBUTE_MALLOC /* empty */ -#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 - <http://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 -]) - 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_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( - [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]) -]) - -# AS_VAR_IF(VAR, VALUE, [IF-MATCH], [IF-NOT-MATCH]) -# ---------------------------------------------------- -# Backport of autoconf-2.63b's macro. -# Remove this macro when we can assume autoconf >= 2.64. -m4_ifndef([AS_VAR_IF], -[m4_define([AS_VAR_IF], -[AS_IF([test x"AS_VAR_GET([$1])" = x""$2], [$3], [$4])])]) - -# gl_PROG_CC_C99 -# Modifies the value of the shell variable CC in an attempt to make $CC -# understand ISO C99 source code. -# This is like AC_PROG_CC_C99, except that -# - AC_PROG_CC_C99 does not mix well with AC_PROG_CC_STDC -# <https://lists.gnu.org/r/bug-gnulib/2011-09/msg00367.html>, -# but many more packages use AC_PROG_CC_STDC than AC_PROG_CC_C99 -# <https://lists.gnu.org/r/bug-gnulib/2011-09/msg00441.html>. -# Remaining problems: -# - When AC_PROG_CC_STDC is invoked twice, it adds the C99 enabling options -# to CC twice -# <https://lists.gnu.org/r/bug-gnulib/2011-09/msg00431.html>. -# - AC_PROG_CC_STDC is likely to change now that C11 is an ISO standard. -AC_DEFUN([gl_PROG_CC_C99], -[ - dnl Change that version number to the minimum Autoconf version that supports - dnl mixing AC_PROG_CC_C99 calls with AC_PROG_CC_STDC calls. - m4_version_prereq([9.0], - [AC_REQUIRE([AC_PROG_CC_C99])], - [AC_REQUIRE([AC_PROG_CC_STDC])]) -]) - -# 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-2.69 Autoconf and overrides the -# AC_C_RESTRICT macro from autoconf 2.60..2.69. It can be removed -# once autoconf >= 2.70 can be assumed. It's painful to check version -# numbers, and in practice this macro is more up-to-date than Autoconf -# is, so override Autoconf unconditionally. -AC_DEFUN([AC_C_RESTRICT], -[AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict], - [ac_cv_c_restrict=no - # The order here caters to the fact that C++ does not require restrict. - 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 directly. */ -#undef restrict -/* Work around a bug in Sun C++: it does not support _Restrict or - __restrict__, even though the corresponding Sun C compiler ends up with - "#define restrict _Restrict" or "#define restrict __restrict__" in the - previous line. Perhaps some future version of Sun C++ will work with - restrict; if so, hopefully it defines __RESTRICT like Sun C does. */ -#if defined __SUNPRO_CC && !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 -]) - -# 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], -[ - saved_as_echo_n="$as_echo_n" - as_echo_n=':' - AC_CACHE_VAL([$1], [$2]) - as_echo_n="$saved_as_echo_n" -]) - -# AS_VAR_COPY was added in autoconf 2.63b -m4_define_default([AS_VAR_COPY], -[AS_LITERAL_IF([$1[]$2], [$1=$$2], [eval $1=\$$2])]) |