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* data/yacc.c (yyparse): Wrap the final return from yyparse inside YYID
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1# Configure template for GNU Bison. -*-Autoconf-*-
2#
3# Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006 Free Software
4# Foundation, Inc.
5#
6# This program is free software; you can redistribute it and/or modify
7# it under the terms of the GNU General Public License as published by
8# the Free Software Foundation; either version 2 of the License, or
9# (at your option) any later version.
10#
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14# GNU General Public License for more details.
15#
16# You should have received a copy of the GNU General Public License
17# along with this program; if not, write to the Free Software
18# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
19# 02110-1301 USA
20
21# This file uses AC_CONFIG_MACRO_DIR, so we need Autoconf 2.58 or better.
22# But Autoconf 2.58 has a bug in the way that it generates tests: it
23# puts the wrong absolute path names in the tests. So we need at
24# least Autoconf 2.59.
25AC_PREREQ(2.59)
26
27AC_INIT([GNU Bison], [2.2a], [bug-bison@gnu.org])
28AC_CONFIG_AUX_DIR([build-aux])
29AC_CONFIG_MACRO_DIR([m4])
30
31# We don't have a file m4/Makefile.am, so we need Automake 1.8 or later.
32AM_INIT_AUTOMAKE([1.8 check-news readme-alpha dist-bzip2])
33AC_CONFIG_HEADERS([config.h:config.hin])
34
35gl_USE_SYSTEM_EXTENSIONS
36
37# Checks for the compiler.
38AC_PROG_CC
39AM_PROG_CC_STDC
40AC_ARG_ENABLE(gcc-warnings,
41[ --enable-gcc-warnings turn on lots of GCC warnings (not recommended)],
42[case "${enableval}" in
43 yes|no) ;;
44 *) AC_MSG_ERROR([bad value ${enableval} for gcc-warnings option]) ;;
45 esac],
46 [enableval=no])
47if test "${enableval}" = yes; then
48 BISON_WARNING(-Werror)
49 AC_SUBST([WERROR_CFLAGS], [$WARNING_CFLAGS])
50 WARNING_CFLAGS=
51 BISON_WARNING(-W)
52 BISON_WARNING(-Wall)
53 BISON_WARNING(-Wcast-align)
54 BISON_WARNING(-Wcast-qual)
55 BISON_WARNING(-Wformat)
56 BISON_WARNING(-Wwrite-strings)
57 AC_SUBST([WARNING_CXXFLAGS], [$WARNING_CFLAGS])
58 # The following warnings are not suitable for C++.
59 BISON_WARNING(-Wbad-function-cast)
60 BISON_WARNING(-Wmissing-declarations)
61 BISON_WARNING(-Wmissing-prototypes)
62 BISON_WARNING(-Wshadow)
63 BISON_WARNING(-Wstrict-prototypes)
64 AC_DEFINE([lint], 1, [Define to 1 if the compiler is checking for lint.])
65fi
66
67BISON_TEST_FOR_WORKING_C_COMPILER
68
69AC_ARG_ENABLE([yacc],
70 [AC_HELP_STRING([--disable-yacc],
71 [do not build a yacc command or an -ly library])],
72 , [enable_yacc=yes])
73case $enable_yacc in
74yes)
75 YACC_SCRIPT=yacc
76 YACC_LIBRARY=liby.a;;
77*)
78 YACC_SCRIPT=
79 YACC_LIBRARY=;;
80esac
81AC_SUBST([YACC_SCRIPT])
82AC_SUBST([YACC_LIBRARY])
83
84# Checks for programs.
85AC_PROG_LEX
86AC_PROG_YACC
87AC_PROG_RANLIB
88BISON_PROG_GNU_M4
89if test x"$ac_cv_prog_gnu_m4" != xyes; then
90 AC_MSG_ERROR([GNU M4 1.4 is required])
91fi
92AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
93
94# Checks for header files.
95AC_CHECK_HEADERS_ONCE([locale.h])
96AM_STDBOOL_H
97
98# Checks for compiler characteristics.
99AC_C_INLINE
100
101# Checks for types.
102AC_CHECK_TYPES([uintptr_t])
103
104# Checks for library functions.
105AC_CHECK_FUNCS_ONCE([setlocale])
106AM_WITH_DMALLOC
107BISON_PREREQ_SUBPIPE
108BISON_PREREQ_TIMEVAR
109
110# gnulib and gettext.
111GNULIB_AUTOCONF_SNIPPET
112# We use po/Makevars, so we need at least gettext 0.12.
113AM_GNU_GETTEXT_VERSION([0.12])
114BISON_I18N
115
116# Internationalized parsers.
117AC_CONFIG_FILES([runtime-po/Makefile.in])
118# Autoconf macros for packages using internationalized parsers.
119aclocaldir='${datadir}/aclocal'
120AC_SUBST([aclocaldir])
121
122# Initialize the test suite.
123AC_CONFIG_TESTDIR(tests)
124AC_CONFIG_FILES([tests/Makefile tests/atlocal])
125AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison])
126AC_CHECK_PROGS([VALGRIND], [valgrind])
127AC_PROG_CXX
128BISON_TEST_FOR_WORKING_CXX_COMPILER
129AM_MISSING_PROG([AUTOM4TE], [autom4te])
130# Needed by tests/atlocal.in.
131AC_SUBST([GCC])
132O0CFLAGS=`echo $CFLAGS | sed 's/-O[[0-9]] *//'`
133AC_SUBST([O0CFLAGS])
134O0CXXFLAGS=`echo $CXXFLAGS | sed 's/-O[[0-9]] *//'`
135AC_SUBST([O0CXXFLAGS])
136
137AC_CONFIG_FILES([Makefile
138 build-aux/Makefile
139 po/Makefile.in
140 data/Makefile
141 examples/Makefile
142 examples/calc++/Makefile
143 lib/Makefile src/Makefile doc/Makefile])
144AC_OUTPUT