Avoid warnings generated by GCC 2.95.4 when Bison is

[bison.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index 81f0850b9a27f83de493168592fb905fe5bc4c32..8c7f35f1139d3a464643b383a84f34afbf39e0d1 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
 # Configure template for GNU Bison.                   -*-Autoconf-*-
 #
-# Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+# Copyright (C) 2001, 2002, 2003 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
@@ -18,36 +18,21 @@
 # 02111-1307  USA
 
 # We need a recent Autoconf to run a recent Autotest.
-AC_PREREQ(2.54)
+AC_PREREQ(2.57)
 
-AC_INIT([GNU Bison], [1.50], [bug-bison@gnu.org])
+AC_INIT([GNU Bison], [1.875b], [bug-bison@gnu.org])
 AC_CONFIG_AUX_DIR(config)
 
 AM_INIT_AUTOMAKE([1.7 check-news readme-alpha dist-bzip2])
 AC_CONFIG_HEADERS([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.
+# Checks for the compiler.
 AC_PROG_CC
-AM_PROG_LEX
-AC_PROG_YACC
-AC_MINIX
+# Remove with Automake 1.8.
 AC_ISC_POSIX
+AC_GNU_SOURCE
+AC_MINIX
 AM_PROG_CC_STDC
-AC_PROG_RANLIB
-AM_MISSING_PROG([AUTOM4TE], [autom4te])
-BISON_PROG_GNU_M4
-if test x"$ac_cv_prog_gnu_m4" != xyes; then
-  AC_MSG_ERROR([GNU M4 1.4 is required])
-fi
-AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
-
 AC_ARG_ENABLE(gcc-warnings,
 [  --enable-gcc-warnings   turn on lots of GCC warnings (not recommended)],
 [case "${enableval}" in
@@ -61,55 +46,101 @@ if test "${enableval}" = yes; then
   WARNING_CFLAGS=
   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)
+  AC_SUBST([WARNING_CXXFLAGS], [$WARNING_CFLAGS])
+  # The following warnings are not suitable for C++.
+  BISON_WARNING(-Wbad-function-cast)
+  BISON_WARNING(-Wmissing-declarations)
+  BISON_WARNING(-Wnested-externs)
+  AC_DEFINE([lint], 1, [Define to 1 if the compiler is checking for lint.])
 fi
 
-# Checks for libraries.
-AC_DEFINE([_GNU_SOURCE],1,[Define to 1 for GNU C library extensions.])
+AC_ARG_ENABLE([yacc],
+  [AC_HELP_STRING([--disable-yacc],
+     [do not build a yacc command or an -ly library])],
+  , [enable_yacc=yes])
+case $enable_yacc in
+yes)
+  YACC_SCRIPT=yacc
+  YACC_LIBRARY=liby.a;;
+*)
+  YACC_SCRIPT=
+  YACC_LIBRARY=;;
+esac
+AC_SUBST([YACC_SCRIPT])
+AC_SUBST([YACC_LIBRARY])
+
+# Checks for programs.
+AC_PROG_LEX
+AC_PROG_YACC
+AC_PROG_RANLIB
+BISON_PROG_GNU_M4
+if test x"$ac_cv_prog_gnu_m4" != xyes; then
+  AC_MSG_ERROR([GNU M4 1.4 is required])
+fi
+AC_DEFINE_UNQUOTED([M4], ["$M4"], [Define to the GNU M4 executable name.])
 
 # Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS([ctype.h locale.h memory.h stdlib.h string.h unistd.h])
+AC_HEADER_STDBOOL
 
 # Checks for compiler characteristics.
-AC_C_CONST
 AC_C_INLINE
-AM_C_PROTOTYPES
+
+# Checks for types.
+AC_CHECK_TYPES([uintptr_t])
 
 # Checks for library functions.
-AC_FUNC_ALLOCA
-AC_FUNC_OBSTACK
-AC_FUNC_ERROR_AT_LINE
-AC_FUNC_STRNLEN
-UTILS_FUNC_MKSTEMP
 AC_CHECK_FUNCS(setlocale)
 AC_CHECK_DECLS([free, getenv, getopt,
                 stpcpy, strchr, strspn, strnlen,
                 malloc, memchr, memrchr])
-AC_REPLACE_FUNCS(memchr memrchr \
-                 strchr stpcpy strrchr strspn strtol)
-AC_FUNC_MALLOC
-AC_FUNC_REALLOC
-jm_PREREQ_QUOTEARG
-jm_FUNC_ARGMATCH
-jm_PREREQ_ERROR
-jm_PREREQ_TEMPNAME
+AC_REPLACE_FUNCS(strchr strrchr strspn)
 AM_WITH_DMALLOC
+BISON_PREREQ_SUBPIPE
 BISON_PREREQ_TIMEVAR
+gl_DIRNAME
+gl_ERROR
+gl_FUNC_ALLOCA
+gl_FUNC_MEMCHR
+gl_FUNC_MEMRCHR
+gl_FUNC_STPCPY
+gl_FUNC_STRNLEN
+gl_FUNC_STRTOL
+gl_GETOPT
+gl_HASH
+gl_MBSWIDTH
+gl_OBSTACK
+gl_QUOTE
+gl_QUOTEARG
+gl_XALLOC
+jm_FUNC_GLIBC_UNLOCKED_IO
+jm_FUNC_MALLOC
+jm_FUNC_REALLOC
 
 # Gettext.
 AM_GNU_GETTEXT(external, need-ngettext)
 AM_GNU_GETTEXT_VERSION(0.11.5)
 
+# 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
+AM_MISSING_PROG([AUTOM4TE], [autom4te])
+# Needed by tests/atlocal.in.
+AC_SUBST([GCC])
+O0CFLAGS=`echo $CFLAGS | sed 's/-O[0-9] *//'`
+AC_SUBST([O0CFLAGS])
+
 AC_CONFIG_FILES([Makefile
                  config/Makefile
                  po/Makefile.in