* src/reader.c (readgram): Don't add the rule 0 if there were no

[bison.git] / configure.in

# Configure template for GNU Bison.                   -*-Autoconf-*-
#
# Copyright 2001  Free Software Foundation, Inc.
#
# 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
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# 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., 59 Temple Place, Suite 330, Boston, MA
# 02111-1307  USA

# We need a recent Autoconf to run a recent Autotest.
AC_PREREQ(2.52g)

AC_INIT([GNU Bison], [1.49a], [bug-bison@gnu.org])
AC_CONFIG_AUX_DIR(config)

AM_INIT_AUTOMAKE([bison], [1.49a])
AM_CONFIG_HEADER(config.h:config.hin)

# Initialize the test suite.
AC_CONFIG_TESTDIR(tests)
AC_CONFIG_FILES([tests/Makefile tests/atlocal])
AC_CONFIG_FILES([tests/bison], [chmod +x tests/bison])
# Needed by tests/atlocal.in.
AC_SUBST([GCC])

# Checks for programs.
AC_PROG_CC
AC_MINIX
AC_ISC_POSIX
AM_PROG_CC_STDC
AC_PROG_RANLIB
AM_MISSING_PROG([AUTOM4TE], [autom4te])

AC_ARG_ENABLE(gcc-warnings,
[  --enable-gcc-warnings   turn on lots of GCC warnings (not recommended)],
[case "${enableval}" in
   yes|no) ;;
   *)      AC_MSG_ERROR([bad value ${enableval} for gcc-warnings option]) ;;
 esac],
              [enableval=no])
if test "${enableval}" = yes; then
  BISON_WARNING(-Wall)
  BISON_WARNING(-W)
  BISON_WARNING(-Wbad-function-cast)
  BISON_WARNING(-Wcast-align)
  BISON_WARNING(-Wcast-qual)
  BISON_WARNING(-Wformat)
  BISON_WARNING(-Wmissing-declarations)
  BISON_WARNING(-Wmissing-prototypes)
  BISON_WARNING(-Wnested-externs)
  BISON_WARNING(-Wshadow)
  BISON_WARNING(-Wstrict-prototypes)
  BISON_WARNING(-Wwrite-strings)
  BISON_WARNING(-Werror)
fi

# Checks for libraries.
AC_DEFINE([_GNU_SOURCE],1,[Define to 1 for GNU C library extensions.])

# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(ctype.h locale.h memory.h stdlib.h string.h unistd.h)

# Checks for typedefs.

# Checks for structures.

# Checks for compiler characteristics.
AC_C_CONST
AC_C_INLINE
AM_C_PROTOTYPES

# Checks for library functions.
AC_FUNC_ALLOCA
AC_FUNC_OBSTACK
AC_FUNC_ERROR_AT_LINE
AC_CHECK_FUNCS(mkstemp setlocale)
AC_CHECK_DECLS([stpcpy, strchr, strndup, strspn, strnlen, memchr])
AC_REPLACE_FUNCS(stpcpy strchr strndup strnlen strspn memchr)
jm_FUNC_MALLOC
jm_FUNC_REALLOC
jm_PREREQ_QUOTEARG
jm_PREREQ_ERROR
AM_WITH_DMALLOC

ALL_LINGUAS="de es et fr ja nl ru sv tr"
AM_GNU_GETTEXT(, need-ngettext)

# This is necessary so that .o files in LIBOBJS are also built via
# the ANSI2KNR-filtering rules.
LIB@&t@OBJS=`echo $LIB@&t@OBJS|sed 's/\.o /\$U.o /g;s/\.o$/\$U.o/'`
AC_SUBST(LIB@&t@OBJS)

AC_OUTPUT([Makefile
           config/Makefile
           intl/Makefile po/Makefile.in
           lib/Makefile src/Makefile doc/Makefile
           m4/Makefile])