# Configure template for GNU Bison. -*-Autoconf-*-
#
-# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software
-# Foundation, Inc.
+# Copyright (C) 2001-2012 Free Software Foundation, Inc.
#
-# This program is free software; you can redistribute it and/or modify
+# 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 2 of the License, or
+# 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,
# 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, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301 USA
+# 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], [2012])
+AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT_YEAR], [$PACKAGE_COPYRIGHT_YEAR],
+ [The copyright year for this package])
-# This file uses AC_CONFIG_MACRO_DIR, so we need Autoconf 2.58 or better.
-# But Autoconf 2.58 has a bug in the way that it generates tests: it
-# puts the wrong absolute path names in the tests. So we need at
-# least Autoconf 2.59.
-AC_PREREQ(2.59)
-
-AC_INIT([GNU Bison], [2.3+], [bug-bison@gnu.org])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])
-# We don't have a file m4/Makefile.am, so we need Automake 1.8 or later.
-AM_INIT_AUTOMAKE([1.8 check-news readme-alpha dist-bzip2])
-AC_CONFIG_HEADERS([config.h:config.hin])
-
-gl_USE_SYSTEM_EXTENSIONS
+# Automake 1.10.3 and 1.11.1 fix a security flaw discussed here:
+#
+# http://thread.gmane.org/gmane.comp.sysutils.autotools.announce/131
+#
+# To avoid 1.11, we make 1.11.1 the minimum version.
+#
+# We want gnits strictness only when rolling a stable release. For
+# release candidates, we use version strings like 2.4.3_rc1, but gnits
+# doesn't like that, so we let the underscore disable gnits. Between
+# releases, we want to be able run make dist without being required to
+# add a bogus NEWS entry. In that case, the version string
+# automatically contains a dash, which we also let disable gnits.
+AM_INIT_AUTOMAKE([1.11.1 dist-xz silent-rules]
+ m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]],
+ [gnu], [gnits]))
+AM_SILENT_RULES([yes])
+AC_CONFIG_HEADERS([lib/config.h:lib/config.in.h])
# Checks for the compiler.
-AC_PROG_CC
-AM_PROG_CC_STDC
-AC_ARG_ENABLE(gcc-warnings,
+AC_PROG_CC_STDC
+AC_PROG_CXX
+
+# Gnulib (early checks).
+gl_EARLY
+
+# Gnulib uses '#pragma GCC diagnostic push' to silence some
+# warnings, but older gcc doesn't support this.
+AC_CACHE_CHECK([whether pragma GCC diagnostic push works],
+ [lv_cv_gcc_pragma_push_works], [
+ save_CFLAGS=$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=$save_CFLAGS])
+
+AC_ARG_ENABLE([gcc-warnings],
[ --enable-gcc-warnings turn on lots of GCC warnings (not recommended)],
-[case "${enableval}" in
+[case $enable_gcc_warnings in
yes|no) ;;
- *) AC_MSG_ERROR([bad value ${enableval} for gcc-warnings option]) ;;
+ *) AC_MSG_ERROR([invalid value for --gcc-warnings: $enable_gcc_warnings]);;
esac],
- [enableval=no])
-if test "${enableval}" = yes; then
- BISON_WARNING(-Werror)
- AC_SUBST([WERROR_CFLAGS], [$WARNING_CFLAGS])
- WARNING_CFLAGS=
- BISON_WARNING(-W)
- BISON_WARNING(-Wall)
- BISON_WARNING(-Wcast-align)
- BISON_WARNING(-Wcast-qual)
- BISON_WARNING(-Wformat)
- BISON_WARNING(-Wwrite-strings)
- AC_SUBST([WARNING_CXXFLAGS], [$WARNING_CFLAGS])
- # The following warnings are not suitable for C++.
- BISON_WARNING(-Wbad-function-cast)
- BISON_WARNING(-Wmissing-declarations)
- BISON_WARNING(-Wmissing-prototypes)
- BISON_WARNING(-Wshadow)
- BISON_WARNING(-Wstrict-prototypes)
- AC_DEFINE([lint], 1, [Define to 1 if the compiler is checking for lint.])
+ [enable_gcc_warnings=no])
+if test "$enable_gcc_warnings" = yes; then
+ warn_common='-Wall -Wextra -Wno-sign-compare -Wcast-align
+ -Wformat -Wpointer-arith -Wwrite-strings'
+ warn_c='-Wbad-function-cast -Wshadow -Wstrict-prototypes'
+ warn_cxx='-Wnoexcept'
+ AC_LANG_PUSH([C])
+ # Clang supports many of GCC's -W options, but only issues warnings
+ # on the ones it does not recognize. In that case, gl_WARN_ADD
+ # thinks the option is supported, and unknown options are then added
+ # to CFLAGS. But then, when -Werror is added in the test suite for
+ # instance, the warning about the unknown option turns into an
+ # error.
+ #
+ # This should be addressed by gnulib's gl_WARN_ADD, but in the
+ # meanwhile, turn warnings about unknown options into errors in
+ # CFLAGS, and restore CFLAGS after the tests.
+ save_CFLAGS=$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], [" $WARN_CFLAGS_TEST"])
+
+ # Warnings for the test suite only.
+ gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST])
+ gl_WARN_ADD([-pedantic], [WARN_CFLAGS_TEST])
+ CFLAGS=$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.
+ gl_WARN_ADD([-Wundef], [WARN_CXXFLAGS_TEST])
+ gl_WARN_ADD([-pedantic], [WARN_CXXFLAGS_TEST])
+ CXXFLAGS=$save_CXXFLAGS
+ AC_LANG_POP([C++])
fi
BISON_TEST_FOR_WORKING_C_COMPILER
+BISON_C_COMPILER_POSIXLY_CORRECT
+BISON_TEST_FOR_WORKING_CXX_COMPILER
+BISON_CXX_COMPILER_POSIXLY_CORRECT
AC_ARG_ENABLE([yacc],
[AC_HELP_STRING([--disable-yacc],
AC_SUBST([YACC_LIBRARY])
# Checks for programs.
+AM_MISSING_PROG([DOT], [dot])
AC_PROG_LEX
+$LEX_IS_FLEX || AC_MSG_ERROR([Flex is required])
AC_PROG_YACC
AC_PROG_RANLIB
-BISON_PROG_GNU_M4
-if test x"$ac_cv_prog_gnu_m4" != xyes; then
- AC_MSG_ERROR([GNU M4 1.4 is required])
-fi
+AC_PROG_GNU_M4
AC_DEFINE_UNQUOTED([M4], ["$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])
-AM_STDBOOL_H
# Checks for compiler characteristics.
AC_C_INLINE
-# Checks for types.
-AC_CHECK_TYPES([uintptr_t])
+# 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_SUBPIPE
BISON_PREREQ_TIMEVAR
-# gnulib and gettext.
-GNULIB_AUTOCONF_SNIPPET
-# We use po/Makevars, so we need at least gettext 0.12.
-AM_GNU_GETTEXT_VERSION([0.12])
+# 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.
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])
-AC_PROG_CXX
-BISON_TEST_FOR_WORKING_CXX_COMPILER
+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])
-O0CFLAGS=`echo $CFLAGS | sed 's/-O[[0-9]] *//'`
-AC_SUBST([O0CFLAGS])
-O0CXXFLAGS=`echo $CXXFLAGS | sed 's/-O[[0-9]] *//'`
-AC_SUBST([O0CXXFLAGS])
+
+gt_JAVACOMP([1.3])
+gt_JAVAEXEC
AC_CONFIG_FILES([Makefile
- build-aux/Makefile
- po/Makefile.in
- data/Makefile
+ build-aux/Makefile
+ po/Makefile.in
+ data/Makefile
+ etc/Makefile
examples/Makefile
examples/calc++/Makefile
- lib/Makefile src/Makefile doc/Makefile])
+ lib/Makefile src/Makefile
+ doc/Makefile
+ doc/yacc.1])
AC_OUTPUT
projects / bison.git / blobdiff