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|
# Configure template for GNU Bison. -*-Autoconf-*-
#
# Copyright (C) 2001-2013 Free Software Foundation, Inc.
#
# This program 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 program 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 program. If not, see <http://www.gnu.org/licenses/>.
# In order for some versions of Sun Studio to compile our C++ test cases
# correctly, we need Autoconf 2.64 or better to handle the restrict
# keyword in at least string.h from gnulib. We need Autoconf 2.68 or
# better to avoid a typo in the `configure --help' entry for the YACC
# environment variable.
AC_PREREQ([2.68])
m4_pattern_forbid([^gl_[A-Z]])
AC_INIT([GNU Bison],
m4_esyscmd([build-aux/git-version-gen .tarball-version]),
[bug-bison@gnu.org])
AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2013])
AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT_YEAR], [$PACKAGE_COPYRIGHT_YEAR],
[The copyright year for this package])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
# Automake 1.10.3 and 1.11.1 fix a security flaw discussed here:
#
# http://thread.gmane.org/gmane.comp.sysutils.autotools.announce/131
#
# To avoid 1.11, we make 1.11.1 the minimum version.
#
# We want gnits strictness only when rolling a stable release. For
# release candidates, we use version strings like 2.4.3_rc1, but gnits
# doesn't like that, so we let the underscore disable gnits. Between
# releases, we want to be able run make dist without being required to
# add a bogus NEWS entry. In that case, the version string
# automatically contains a dash, which we also let disable gnits.
AM_INIT_AUTOMAKE([1.11.1 dist-xz silent-rules]
m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]],
[gnu], [gnits]))
AM_SILENT_RULES([yes])
AC_CONFIG_HEADERS([lib/config.h:lib/config.in.h])
# Checks for the compiler.
AC_PROG_CC_STDC
AC_PROG_CXX
# Gnulib (early checks).
gl_EARLY
# Gnulib uses '#pragma GCC diagnostic push' to silence some
# warnings, but older gcc doesn't support this.
AC_CACHE_CHECK([whether pragma GCC diagnostic push works],
[lv_cv_gcc_pragma_push_works], [
save_CFLAGS=$CFLAGS
CFLAGS='-Wunknown-pragmas -Werror'
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#pragma GCC diagnostic push
#pragma GCC diagnostic pop
]])],
[lv_cv_gcc_pragma_push_works=yes],
[lv_cv_gcc_pragma_push_works=no])
CFLAGS=$save_CFLAGS])
AC_ARG_ENABLE([gcc-warnings],
[ --enable-gcc-warnings turn on lots of GCC warnings (not recommended)],
[case $enable_gcc_warnings in
yes|no) ;;
*) AC_MSG_ERROR([invalid value for --gcc-warnings: $enable_gcc_warnings]);;
esac],
[enable_gcc_warnings=no])
if test "$enable_gcc_warnings" = yes; then
warn_common='-Wall -Wextra -Wno-sign-compare -Wcast-align
-Wformat -Wpointer-arith -Wwrite-strings'
warn_c='-Wbad-function-cast -Wshadow -Wstrict-prototypes'
warn_cxx='-Wnoexcept'
# Warnings for the test suite only.
#
# -fno-color-diagnostics: Clang's use of colors in the error
# messages is confusing the tests looking at the compiler's output
# (e.g., synclines.at).
warn_tests='-Wundef -pedantic -fno-color-diagnostics'
AC_LANG_PUSH([C])
# Clang supports many of GCC's -W options, but only issues warnings
# on the ones it does not recognize. In that case, gl_WARN_ADD
# thinks the option is supported, and unknown options are then added
# to CFLAGS. But then, when -Werror is added in the test suite for
# instance, the warning about the unknown option turns into an
# error.
#
# This should be addressed by gnulib's gl_WARN_ADD, but in the
# meanwhile, turn warnings about unknown options into errors in
# CFLAGS, and restore CFLAGS after the tests.
save_CFLAGS=$CFLAGS
gl_WARN_ADD([-Werror=unknown-warning-option], [CFLAGS])
for i in $warn_common $warn_c;
do
gl_WARN_ADD([$i], [WARN_CFLAGS])
done
gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
# Warnings for the test suite, and maybe for bison if GCC is modern
# enough.
gl_WARN_ADD([-Wmissing-declarations], [WARN_CFLAGS_TEST])
gl_WARN_ADD([-Wmissing-prototypes], [WARN_CFLAGS_TEST])
test $lv_cv_gcc_pragma_push_works = yes &&
AS_VAR_APPEND([WARN_CFLAGS], [" $WARN_CFLAGS_TEST"])
# Warnings for the test suite only.
for i in $warn_tests;
do
gl_WARN_ADD([$i], [WARN_CFLAGS_TEST])
done
CFLAGS=$save_CFLAGS
AC_LANG_POP([C])
AC_LANG_PUSH([C++])
save_CXXFLAGS=$CXXFLAGS
gl_WARN_ADD([-Werror=unknown-warning-option], [CXXFLAGS])
for i in $warn_common $warn_cxx;
do
gl_WARN_ADD([$i], [WARN_CXXFLAGS])
done
gl_WARN_ADD([-Wzero-as-null-pointer-constant], [WARN_CXXFLAGS],
[AC_LANG_PROGRAM([], [nullptr])])
gl_WARN_ADD([-Werror], [WERROR_CXXFLAGS])
# Warnings for the test suite only.
for i in $warn_tests;
do
gl_WARN_ADD([$i], [WARN_CXXFLAGS_TEST])
done
# Clang++ 3.2+ reject C code generated by Flex.
gl_WARN_ADD([-Wno-null-conversion], [WARN_NO_NULL_CONVERSION_CXXFLAGS])
# Variants break strict aliasing analysis.
gl_WARN_ADD([-fno-strict-aliasing], [NO_STRICT_ALIAS_CXXFLAGS])
CXXFLAGS=$save_CXXFLAGS
AC_LANG_POP([C++])
fi
BISON_TEST_FOR_WORKING_C_COMPILER
BISON_C_COMPILER_POSIXLY_CORRECT
BISON_TEST_FOR_WORKING_CXX_COMPILER
BISON_CXX_COMPILER_POSIXLY_CORRECT
AC_ARG_ENABLE([yacc],
[AC_HELP_STRING([--disable-yacc],
[do not build a yacc command or an -ly library])],
, [enable_yacc=yes])
case $enable_yacc in
yes)
YACC_SCRIPT=yacc
YACC_LIBRARY=liby.a;;
*)
YACC_SCRIPT=
YACC_LIBRARY=;;
esac
AC_SUBST([YACC_SCRIPT])
AC_SUBST([YACC_LIBRARY])
# Checks for programs.
AM_MISSING_PROG([DOT], [dot])
AC_PROG_LEX
$LEX_IS_FLEX || AC_MSG_ERROR([Flex is required])
AC_PROG_YACC
AC_PROG_RANLIB
AC_PROG_GNU_M4
AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
AC_DEFINE_UNQUOTED([M4_GNU_OPTION], ["$M4_GNU"], [Define to "-g" if GNU M4
supports -g, otherwise to "".])
AC_PATH_PROG([PERL], [perl])
if test -z "$PERL"; then
AC_MSG_ERROR([perl not found])
fi
AM_MISSING_PROG([HELP2MAN], [help2man])
AC_PATH_PROG([XSLTPROC], [xsltproc])
AC_SUBST([XSLTPROC])
# Checks for header files.
AC_CHECK_HEADERS_ONCE([locale.h])
# Checks for compiler characteristics.
AC_C_INLINE
# Gnulib (later checks). Putting them here rather than right after
# gl_EARLY avoids some redundant checks.
gl_INIT
# Checks for library functions.
AC_CHECK_FUNCS_ONCE([setlocale])
AM_WITH_DMALLOC
BISON_PREREQ_TIMEVAR
# Gettext.
# We use gnulib, which is only guaranteed to work properly with the
# latest Gettext.
AM_GNU_GETTEXT([external], [need-ngettext])
AM_GNU_GETTEXT_VERSION([0.18])
BISON_I18N
# Internationalized parsers.
AC_CONFIG_FILES([runtime-po/Makefile.in])
# Autoconf macros for packages using internationalized parsers.
aclocaldir='${datadir}/aclocal'
AC_SUBST([aclocaldir])
# Create the benchmark script.
AC_CONFIG_FILES([etc/bench.pl], [chmod +x etc/bench.pl])
# Initialize the test suite.
AC_CONFIG_TESTDIR(tests)
AC_CONFIG_FILES([tests/Makefile tests/atlocal])
AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison])
AC_CHECK_PROGS([VALGRIND], [valgrind])
case $VALGRIND:$host_os in
'':*) ;;
*:darwin*)
# See README-hacking.
# VALGRIND+=' --suppressions=$(abs_top_srcdir)/build-aux/darwin11.4.0.valgrind'
VALGRIND=;;
*:*)
AC_SUBST([VALGRIND_PREBISON], ["$VALGRIND -q"]);;
esac
AM_MISSING_PROG([AUTOM4TE], [autom4te])
# Needed by tests/atlocal.in.
AC_SUBST([GCC])
gt_JAVACOMP([1.3])
gt_JAVAEXEC
AC_CONFIG_FILES([Makefile
build-aux/Makefile
po/Makefile.in
data/Makefile
etc/Makefile
examples/Makefile
examples/calc++/Makefile
lib/Makefile src/Makefile
doc/Makefile
doc/yacc.1])
AC_OUTPUT
|
