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1# Configure template for GNU Bison. -*-Autoconf-*-
2#
34136e65 3# Copyright (C) 2001-2012 Free Software Foundation, Inc.
2c8a9dfa 4#
f16b0819 5# This program is free software: you can redistribute it and/or modify
342b8b6e 6# it under the terms of the GNU General Public License as published by
f16b0819 7# the Free Software Foundation, either version 3 of the License, or
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8# (at your option) any later version.
9#
10# This program is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13# GNU General Public License for more details.
14#
15# You should have received a copy of the GNU General Public License
f16b0819 16# along with this program. If not, see <http://www.gnu.org/licenses/>.
342b8b6e 17
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18# In order for some versions of Sun Studio to compile our C++ test cases
19# correctly, we need Autoconf 2.64 or better to handle the restrict
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20# keyword in at least string.h from gnulib. We need Autoconf 2.68 or
21# better to avoid a typo in the `configure --help' entry for the YACC
22# environment variable.
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23AC_PREREQ([2.68])
24m4_pattern_forbid([^gl_[A-Z]])
342b8b6e 25
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26AC_INIT([GNU Bison],
27 m4_esyscmd([build-aux/git-version-gen .tarball-version]),
28 [bug-bison@gnu.org])
34136e65 29AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2012])
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30AC_DEFINE_UNQUOTED([PACKAGE_COPYRIGHT_YEAR], [$PACKAGE_COPYRIGHT_YEAR],
31 [The copyright year for this package])
a005a9c4 32
c8775f93 33AC_CONFIG_AUX_DIR([build-aux])
1f65350a 34AC_CONFIG_MACRO_DIR([m4])
342b8b6e 35
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36# Automake 1.10.3 and 1.11.1 fix a security flaw discussed here:
37#
38# http://thread.gmane.org/gmane.comp.sysutils.autotools.announce/131
39#
40# To avoid 1.11, we make 1.11.1 the minimum version.
41#
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42# We want gnits strictness only when rolling a stable release. For
43# release candidates, we use version strings like 2.4.3_rc1, but gnits
44# doesn't like that, so we let the underscore disable gnits. Between
45# releases, we want to be able run make dist without being required to
46# add a bogus NEWS entry. In that case, the version string
47# automatically contains a dash, which we also let disable gnits.
da1eb15b 48AM_INIT_AUTOMAKE([1.11.1 dist-xz silent-rules]
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49 m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]],
50 [gnu], [gnits]))
da1eb15b 51AM_SILENT_RULES([yes])
3b2942e6 52AC_CONFIG_HEADERS([lib/config.h:lib/config.hin])
1f65350a 53
f377f69f 54# Checks for the compiler.
cf2a5f7c 55AC_PROG_CC_STDC
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56
57# Gnulib (early checks).
58gl_EARLY
59
1890a2a8 60AC_ARG_ENABLE([gcc-warnings],
630f5212 61[ --enable-gcc-warnings turn on lots of GCC warnings (not recommended)],
1890a2a8 62[case $enable_gcc_warnings in
630f5212 63 yes|no) ;;
1890a2a8 64 *) AC_MSG_ERROR([invalid value for --gcc-warnings: $enable_gcc_warnings]);;
1e24cc5b 65 esac],
36021b23 66 [enable_gcc_warnings=no])
1890a2a8 67if test "$enable_gcc_warnings" = yes; then
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68 gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
69 AC_SUBST([WERROR_CFLAGS])
70 gl_WARN_ADD([-Wall])
71 gl_WARN_ADD([-Wextra -Wno-sign-compare])
72 gl_WARN_ADD([-Wcast-align])
73 gl_WARN_ADD([-Wcast-qual])
74 gl_WARN_ADD([-Wformat])
75 gl_WARN_ADD([-Wpointer-arith])
76 gl_WARN_ADD([-Wwrite-strings])
77 AC_SUBST([WARN_CXXFLAGS], [$WARN_CFLAGS])
504f20f7 78 # The following warnings are not suitable for C++.
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79 gl_WARN_ADD([-Wbad-function-cast])
80 gl_WARN_ADD([-Wmissing-declarations])
81 gl_WARN_ADD([-Wmissing-prototypes])
82 gl_WARN_ADD([-Wshadow])
83 gl_WARN_ADD([-Wstrict-prototypes])
84 AC_SUBST([WARN_CFLAGS])
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85 # Warnings for the test suite only.
86 gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST])
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87 gl_WARN_ADD([-pedantic], [WARN_CFLAGS_TEST])
88 AC_SUBST([WARN_CXXFLAGS_TEST], ["$WARN_CXXFLAGS $WARN_CFLAGS_TEST"])
89 AC_SUBST([WARN_CFLAGS_TEST], ["$WARN_CFLAGS $WARN_CFLAGS_TEST"])
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90fi
91
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92BISON_TEST_FOR_WORKING_C_COMPILER
93
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94AC_ARG_ENABLE([yacc],
95 [AC_HELP_STRING([--disable-yacc],
96 [do not build a yacc command or an -ly library])],
97 , [enable_yacc=yes])
98case $enable_yacc in
99yes)
0305d25e 100 YACC_SCRIPT=src/yacc
feda5527 101 YACC_LIBRARY=lib/liby.a;;
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102*)
103 YACC_SCRIPT=
104 YACC_LIBRARY=;;
105esac
106AC_SUBST([YACC_SCRIPT])
107AC_SUBST([YACC_LIBRARY])
108
f377f69f 109# Checks for programs.
41cce2f6 110AC_PROG_LEX
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111AC_PROG_YACC
112AC_PROG_RANLIB
62c99cf4 113AC_PROG_GNU_M4
f377f69f 114AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
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115AC_DEFINE_UNQUOTED([M4_GNU_OPTION], ["$M4_GNU"], [Define to "-g" if GNU M4
116supports -g, otherwise to "".])
727a1401 117AM_MISSING_PROG([HELP2MAN], [help2man])
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118AC_PATH_PROG([XSLTPROC], [xsltproc])
119AC_SUBST([XSLTPROC])
f2939cd6 120
e79137ac 121# Checks for header files.
1f65350a 122AC_CHECK_HEADERS_ONCE([locale.h])
f2939cd6 123
e79137ac 124# Checks for compiler characteristics.
dd877b0c 125AC_C_INLINE
f2939cd6 126
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127# Gnulib (later checks). Putting them here rather than right after
128# gl_EARLY avoids some redundant checks.
129gl_INIT
130
e79137ac 131# Checks for library functions.
1f65350a 132AC_CHECK_FUNCS_ONCE([setlocale])
342b8b6e 133AM_WITH_DMALLOC
2593afab 134BISON_PREREQ_SUBPIPE
1509d42f 135BISON_PREREQ_TIMEVAR
f2939cd6 136
3b2942e6 137# Gettext.
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138# We use gnulib, which is only guaranteed to work properly with the
139# latest Gettext.
91a2b9b1 140AM_GNU_GETTEXT([external], [need-ngettext])
e35bc778 141AM_GNU_GETTEXT_VERSION([0.18])
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142BISON_I18N
143
144# Internationalized parsers.
145AC_CONFIG_FILES([runtime-po/Makefile.in])
146# Autoconf macros for packages using internationalized parsers.
147aclocaldir='${datadir}/aclocal'
148AC_SUBST([aclocaldir])
bbcb769c 149
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150# Create the benchmark script.
151AC_CONFIG_FILES([etc/bench.pl], [chmod +x etc/bench.pl])
152
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153# Initialize the test suite.
154AC_CONFIG_TESTDIR(tests)
d4977ce3 155AC_CONFIG_FILES([tests/atlocal])
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156AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison])
157AC_CHECK_PROGS([VALGRIND], [valgrind])
504f20f7 158AC_PROG_CXX
209ea708 159BISON_TEST_FOR_WORKING_CXX_COMPILER
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160AM_MISSING_PROG([AUTOM4TE], [autom4te])
161# Needed by tests/atlocal.in.
162AC_SUBST([GCC])
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163AC_SUBST([O0CFLAGS], [`echo $CFLAGS | sed 's/-O[[0-9]] *//'`])
164AC_SUBST([O0CXXFLAGS], [`echo $CXXFLAGS | sed 's/-O[[0-9]] *//'`])
f377f69f 165
1979121c 166gt_JAVACOMP([1.3], [1.4])
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167gt_JAVAEXEC
168
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169# We use gnulib, but from lib/local.mk instead of lib/Makefile.am.
170# So prefix paths with lib/. See also etc/prefix-gnulib-mk.
171gl_LIBOBJS=`echo "$gl_LIBOBJS" | sed -e 's, , lib/,g'`
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172# Listing the names of the variables to prefix is error-prone.
173# Rather, adjust all the AC_SUBST variables whose name ends in '_H',
174# and whose content ends in '.h'.
175for ac_var in $ac_subst_vars
feda5527 176do
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177 eval "ac_val=\$$ac_var"
178 case $ac_var=$ac_val in
179 (*_H=*.h) eval "$ac_var=lib/\$$ac_var";;
180 esac
feda5527 181done
8fa36911 182AC_CONFIG_FILES([Makefile
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183 po/Makefile.in
184 examples/calc++/Makefile
185 doc/yacc.1])
927f7817 186AC_OUTPUT