X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/ebec3740c2b95c0d361136abba61a67e4a7e8cbd..080e734812d0fe1f427e16b5e9c7e7fd55c89347:/configure.ac

diff --git a/configure.ac b/configure.ac
index b1a39015..f0eb3e48 100644
--- 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, 2004, 2005 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
@@ -17,21 +17,24 @@
 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
 # 02111-1307  USA
 
-# We need a recent Autoconf to run a recent Autotest.
-AC_PREREQ(2.54)
+# This file uses AC_CONFIG_MACRO_DIR, so we need Autoconf 2.58 or better.
+# But Autoconf 2.58 has a bug in the way that it generates tests: it
+# puts the wrong absolute path names in the tests.  So we need at
+# least Autoconf 2.59.
+AC_PREREQ(2.59)
 
-AC_INIT([GNU Bison], [1.75f], [bug-bison@gnu.org])
-AC_CONFIG_AUX_DIR(config)
+AC_INIT([GNU Bison], [2.0a], [bug-bison@gnu.org])
+AC_CONFIG_AUX_DIR([config])
+AC_CONFIG_MACRO_DIR([m4])
 
-AM_INIT_AUTOMAKE([1.7 check-news readme-alpha dist-bzip2])
+# We don't have a file m4/Makefile.am, so we need Automake 1.8 or later.
+AM_INIT_AUTOMAKE([1.8 check-news readme-alpha dist-bzip2])
 AC_CONFIG_HEADERS([config.h:config.hin])
 
+gl_USE_SYSTEM_EXTENSIONS
+
 # Checks for the compiler.
 AC_PROG_CC
-# Remove with Automake 1.8.
-AC_ISC_POSIX
-AC_GNU_SOURCE
-AC_MINIX
 AM_PROG_CC_STDC
 AC_ARG_ENABLE(gcc-warnings,
 [  --enable-gcc-warnings   turn on lots of GCC warnings (not recommended)],
@@ -44,21 +47,38 @@ if test "${enableval}" = yes; then
   BISON_WARNING(-Werror)
   AC_SUBST([WERROR_CFLAGS], [$WARNING_CFLAGS])
   WARNING_CFLAGS=
-  BISON_WARNING(-Wall)
   BISON_WARNING(-W)
-  BISON_WARNING(-Wbad-function-cast)
+  BISON_WARNING(-Wall)
   BISON_WARNING(-Wcast-align)
   BISON_WARNING(-Wcast-qual)
   BISON_WARNING(-Wformat)
+  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(-Wmissing-prototypes)
   BISON_WARNING(-Wnested-externs)
   BISON_WARNING(-Wshadow)
   BISON_WARNING(-Wstrict-prototypes)
-  BISON_WARNING(-Wwrite-strings)
   AC_DEFINE([lint], 1, [Define to 1 if the compiler is checking for lint.])
 fi
 
+AC_ARG_ENABLE([yacc],
+  [AC_HELP_STRING([--disable-yacc],
+     [do not build a yacc command or an -ly library])],
+  , [enable_yacc=yes])
+case $enable_yacc in
+yes)
+  YACC_SCRIPT=yacc
+  YACC_LIBRARY=liby.a;;
+*)
+  YACC_SCRIPT=
+  YACC_LIBRARY=;;
+esac
+AC_SUBST([YACC_SCRIPT])
+AC_SUBST([YACC_LIBRARY])
+
 # Checks for programs.
 AC_PROG_LEX
 AC_PROG_YACC
@@ -70,9 +90,8 @@ fi
 AC_DEFINE_UNQUOTED([M4], ["$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
+AC_CHECK_HEADERS_ONCE([locale.h])
+AM_STDBOOL_H
 
 # Checks for compiler characteristics.
 AC_C_INLINE
@@ -81,46 +100,34 @@ AC_C_INLINE
 AC_CHECK_TYPES([uintptr_t])
 
 # Checks for library functions.
-AC_FUNC_ALLOCA
-AC_FUNC_OBSTACK
-AC_FUNC_ERROR_AT_LINE
-AC_FUNC_STRNLEN
-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 strtoul)
-AC_FUNC_MALLOC
-AC_FUNC_REALLOC
-jm_PREREQ_MBSWIDTH
-jm_PREREQ_QUOTEARG
-jm_FUNC_ARGMATCH
-jm_PREREQ_ERROR
+AC_CHECK_FUNCS_ONCE([setlocale])
 AM_WITH_DMALLOC
 BISON_PREREQ_SUBPIPE
 BISON_PREREQ_TIMEVAR
 
-# Gettext.
-AM_GNU_GETTEXT(external, need-ngettext)
-AM_GNU_GETTEXT_VERSION(0.11.5)
+# gnulib and gettext.
+GNULIB_AUTOCONF_SNIPPET
+# We use po/Makevars.template, so we need at least gettext 0.12.
+AM_GNU_GETTEXT_VERSION([0.12])
 
 # 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_CHECK_PROGS([GXX], [g++])
+AC_PROG_CXX
+BISON_TEST_FOR_WORKING_CXX_COMPILER
 AM_MISSING_PROG([AUTOM4TE], [autom4te])
 # Needed by tests/atlocal.in.
 AC_SUBST([GCC])
-O0CFLAGS=`echo $CFLAGS | sed 's/-O[0-9] *//'`
+O0CFLAGS=`echo $CFLAGS | sed 's/-O[[0-9]] *//'`
 AC_SUBST([O0CFLAGS])
+O0CXXFLAGS=`echo $CXXFLAGS | sed 's/-O[[0-9]] *//'`
+AC_SUBST([O0CXXFLAGS])
 
 AC_CONFIG_FILES([Makefile
                  config/Makefile
                  po/Makefile.in
                  data/Makefile
-                 lib/Makefile src/Makefile doc/Makefile
-                 m4/Makefile])
+                 lib/Makefile src/Makefile doc/Makefile])
 AC_OUTPUT