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tests: fix empty unions.
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1# Configure template for GNU Bison. -*-Autoconf-*-
2#
3# Copyright (C) 2001-2011 Free Software Foundation, Inc.
4#
5# This program is free software: you can redistribute it and/or modify
6# it under the terms of the GNU General Public License as published by
7# the Free Software Foundation, either version 3 of the License, or
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
16# along with this program. If not, see <http://www.gnu.org/licenses/>.
17
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
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.
23AC_PREREQ(2.68)
24
25AC_INIT([GNU Bison],
26 m4_esyscmd([build-aux/git-version-gen .tarball-version]),
27 [bug-bison@gnu.org])
28AC_DEFINE([PACKAGE_COPYRIGHT_YEAR], [2011],
29 [The copyright year for this package])
30AC_SUBST([PACKAGE_COPYRIGHT_YEAR], [2011])
31
32AC_CONFIG_AUX_DIR([build-aux])
33AC_CONFIG_MACRO_DIR([m4])
34
35# Automake 1.10.3 and 1.11.1 fix a security flaw discussed here:
36#
37# http://thread.gmane.org/gmane.comp.sysutils.autotools.announce/131
38#
39# To avoid 1.11, we make 1.11.1 the minimum version.
40#
41# We want gnits strictness only when rolling a stable release. For
42# release candidates, we use version strings like 2.4.3_rc1, but gnits
43# doesn't like that, so we let the underscore disable gnits. Between
44# releases, we want to be able run make dist without being required to
45# add a bogus NEWS entry. In that case, the version string
46# automatically contains a dash, which we also let disable gnits.
47AM_INIT_AUTOMAKE([1.11.1 dist-xz]
48 m4_bmatch(m4_defn([AC_PACKAGE_VERSION]), [[-_]],
49 [gnu], [gnits]))
50AC_CONFIG_HEADERS([lib/config.h:lib/config.hin])
51
52# Checks for the compiler.
53AC_PROG_CC_STDC
54
55# Gnulib (early checks).
56gl_EARLY
57
58AC_ARG_ENABLE(gcc-warnings,
59[ --enable-gcc-warnings turn on lots of GCC warnings (not recommended)],
60[case "${enableval}" in
61 yes|no) ;;
62 *) AC_MSG_ERROR([bad value ${enableval} for gcc-warnings option]) ;;
63 esac],
64 [enableval=no])
65if test "${enableval}" = yes; then
66 gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
67 AC_SUBST([WERROR_CFLAGS])
68 gl_WARN_ADD([-Wall])
69 gl_WARN_ADD([-Wextra -Wno-sign-compare])
70 gl_WARN_ADD([-Wcast-align])
71 gl_WARN_ADD([-Wcast-qual])
72 gl_WARN_ADD([-Wformat])
73 gl_WARN_ADD([-Wpointer-arith])
74 gl_WARN_ADD([-Wwrite-strings])
75 AC_SUBST([WARN_CXXFLAGS], [$WARN_CFLAGS])
76 # The following warnings are not suitable for C++.
77 gl_WARN_ADD([-Wbad-function-cast])
78 gl_WARN_ADD([-Wmissing-declarations])
79 gl_WARN_ADD([-Wmissing-prototypes])
80 gl_WARN_ADD([-Wshadow])
81 gl_WARN_ADD([-Wstrict-prototypes])
82 AC_SUBST([WARN_CFLAGS])
83 # Warnings for the test suite only.
84 gl_WARN_ADD([-Wundef], [WARN_CFLAGS_TEST])
85 WARN_CXXFLAGS_TEST="$WARN_CXXFLAGS $WARN_CFLAGS_TEST"
86 WARN_CFLAGS_TEST="$WARN_CFLAGS $WARN_CFLAGS_TEST"
87 AC_SUBST([WARN_CXXFLAGS_TEST])
88 AC_SUBST([WARN_CFLAGS_TEST])
89fi
90
91BISON_TEST_FOR_WORKING_C_COMPILER
92
93AC_ARG_ENABLE([yacc],
94 [AC_HELP_STRING([--disable-yacc],
95 [do not build a yacc command or an -ly library])],
96 , [enable_yacc=yes])
97case $enable_yacc in
98yes)
99 YACC_SCRIPT=yacc
100 YACC_LIBRARY=liby.a;;
101*)
102 YACC_SCRIPT=
103 YACC_LIBRARY=;;
104esac
105AC_SUBST([YACC_SCRIPT])
106AC_SUBST([YACC_LIBRARY])
107
108# Checks for programs.
109AC_PROG_LEX
110AC_PROG_YACC
111AC_PROG_RANLIB
112AC_PROG_GNU_M4
113AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
114AC_DEFINE_UNQUOTED([M4_GNU_OPTION], ["$M4_GNU"], [Define to "-g" if GNU M4
115supports -g, otherwise to "".])
116AM_MISSING_PROG([HELP2MAN], [help2man])
117AC_PATH_PROG([XSLTPROC], [xsltproc])
118AC_SUBST([XSLTPROC])
119
120# Checks for header files.
121AC_CHECK_HEADERS_ONCE([locale.h])
122
123# Checks for compiler characteristics.
124AC_C_INLINE
125
126# Gnulib (later checks). Putting them here rather than right after
127# gl_EARLY avoids some redundant checks.
128gl_INIT
129
130# Checks for library functions.
131AC_CHECK_FUNCS_ONCE([setlocale])
132AM_WITH_DMALLOC
133BISON_PREREQ_SUBPIPE
134BISON_PREREQ_TIMEVAR
135
136# Gettext.
137# We use gnulib, which is only guaranteed to work properly with the
138# latest Gettext.
139AM_GNU_GETTEXT([external], [need-ngettext])
140AM_GNU_GETTEXT_VERSION([0.18])
141BISON_I18N
142
143# Internationalized parsers.
144AC_CONFIG_FILES([runtime-po/Makefile.in])
145# Autoconf macros for packages using internationalized parsers.
146aclocaldir='${datadir}/aclocal'
147AC_SUBST([aclocaldir])
148
149# Create the benchmark script.
150AC_CONFIG_FILES([etc/bench.pl], [chmod +x etc/bench.pl])
151
152# Initialize the test suite.
153AC_CONFIG_TESTDIR(tests)
154AC_CONFIG_FILES([tests/Makefile tests/atlocal])
155AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison])
156AC_CHECK_PROGS([VALGRIND], [valgrind])
157AC_PROG_CXX
158BISON_TEST_FOR_WORKING_CXX_COMPILER
159AM_MISSING_PROG([AUTOM4TE], [autom4te])
160# Needed by tests/atlocal.in.
161AC_SUBST([GCC])
162AC_SUBST([O0CFLAGS], [`echo $CFLAGS | sed 's/-O[[0-9]] *//'`])
163AC_SUBST([O0CXXFLAGS], [`echo $CXXFLAGS | sed 's/-O[[0-9]] *//'`])
164
165gt_JAVACOMP([1.3])
166gt_JAVAEXEC
167
168AC_CONFIG_FILES([Makefile
169 build-aux/Makefile
170 po/Makefile.in
171 data/Makefile
172 etc/Makefile
173 examples/Makefile
174 examples/calc++/Makefile
175 lib/Makefile src/Makefile
176 doc/Makefile
177 doc/yacc.1])
178AC_OUTPUT