X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/21fe08cadcb84fddd5038ac6857a904dbe1ad885..c8e966e27200a9aef47e4e758de18bb199560e15:/configure.ac diff --git a/configure.ac b/configure.ac index 7a2cac99..e6403f4b 100644 --- a/configure.ac +++ b/configure.ac @@ -1,11 +1,10 @@ # 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, @@ -14,55 +13,131 @@ # 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 . -# We use macros like AC_CHECK_HEADERS_ONCE, so we need Autoconf 2.60 or better. -AC_PREREQ(2.60) +# 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], [$PACKAGE_COPYRIGHT_YEAR], + [The copyright year for this package]) -AC_INIT([GNU Bison], [2.3a], [bug-bison@gnu.org]) AC_CONFIG_AUX_DIR([build-aux]) AC_CONFIG_MACRO_DIR([m4]) -# We don't have a file m4/Makefile.am, so we need Automake 1.8 or later. -AM_INIT_AUTOMAKE([1.8 check-news readme-alpha dist-bzip2]) -AC_CONFIG_HEADERS([config.h:config.hin]) - -gl_USE_SYSTEM_EXTENSIONS +# Automake 1.10.3 and 1.11.1 fix a security flaw discussed here: +# +# http://thread.gmane.org/gmane.comp.sysutils.autotools.announce/131 +# +# To avoid 1.11, we make 1.11.1 the minimum version. +# +# We want gnits strictness only when rolling a stable release. For +# release candidates, we use version strings like 2.4.3_rc1, but gnits +# doesn't like that, so we let the underscore disable gnits. Between +# releases, we want to be able run make dist without being required to +# add a bogus NEWS entry. In that case, the version string +# automatically contains a dash, which we also let disable gnits. +AM_INIT_AUTOMAKE([1.11.1 dist-xz silent-rules] + m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]], + [gnu], [gnits])) +AM_SILENT_RULES([yes]) +AC_CONFIG_HEADERS([lib/config.h:lib/config.in.h]) # Checks for the compiler. -AC_PROG_CC -AM_PROG_CC_STDC -AC_ARG_ENABLE(gcc-warnings, +AC_PROG_CC_STDC +AC_PROG_CXX + +# Gnulib (early checks). +gl_EARLY + +# Gnulib uses '#pragma GCC diagnostic push' to silence some +# warnings, but older gcc doesn't support this. +AC_CACHE_CHECK([whether pragma GCC diagnostic push works], + [lv_cv_gcc_pragma_push_works], [ + save_CFLAGS=$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 - gl_WARNING_CFLAGS([-Werror]) - AC_SUBST([WERROR_CFLAGS], [$WARNING_CFLAGS]) - WARNING_CFLAGS= - gl_WARNING_CFLAGS([-Wextra -Wno-sign-compare]) - gl_WARNING_CFLAGS([-Wall]) - gl_WARNING_CFLAGS([-Wcast-align]) - gl_WARNING_CFLAGS([-Wcast-qual]) - gl_WARNING_CFLAGS([-Wformat]) - gl_WARNING_CFLAGS([-Wpointer-arith]) - gl_WARNING_CFLAGS([-Wwrite-strings]) - AC_SUBST([WARNING_CXXFLAGS], [$WARNING_CFLAGS]) - # The following warnings are not suitable for C++. - gl_WARNING_CFLAGS([-Wbad-function-cast]) - gl_WARNING_CFLAGS([-Wmissing-declarations]) - gl_WARNING_CFLAGS([-Wmissing-prototypes]) - gl_WARNING_CFLAGS([-Wshadow]) - gl_WARNING_CFLAGS([-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=$save_CXXFLAGS + AC_LANG_POP([C++]) fi BISON_TEST_FOR_WORKING_C_COMPILER +BISON_C_COMPILER_POSIXLY_CORRECT +BISON_TEST_FOR_WORKING_CXX_COMPILER +BISON_CXX_COMPILER_POSIXLY_CORRECT AC_ARG_ENABLE([yacc], [AC_HELP_STRING([--disable-yacc], @@ -80,32 +155,43 @@ AC_SUBST([YACC_SCRIPT]) AC_SUBST([YACC_LIBRARY]) # Checks for programs. +AM_MISSING_PROG([DOT], [dot]) AC_PROG_LEX +$LEX_IS_FLEX || AC_MSG_ERROR([Flex is required]) AC_PROG_YACC AC_PROG_RANLIB -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 +# 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've never tested with gettext versions before 0.15, so play it safe. -AM_GNU_GETTEXT_VERSION([0.15]) +# 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. @@ -114,26 +200,39 @@ AC_CONFIG_FILES([runtime-po/Makefile.in]) 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