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# Process this file with autoconf to produce a configure script.
# Copyright (C) 1995, 1997, 1998, 1999 Free Software Foundation, Inc.
# Contributed by Dave Love (d.love@dl.ac.uk).
#
#This file is part of GNU Objective C.
#
#GNU Objective C 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, or (at your option)
#any later version.
#
#GNU Objective C 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 GNU Objective C; see the file COPYING. If not, write to
#the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
#02111-1307, USA.
AC_PREREQ(2.13)
AC_INIT(objc/objc.h)
AC_CONFIG_HEADER(config.h)
if test "${srcdir}" = "." ; then
if test "${with_target_subdir}" != "." ; then
topsrcdir=${with_multisrctop}../..
else
topsrcdir=${with_multisrctop}..
fi
else
topsrcdir=${srcdir}/..
fi
dnl This is needed for a multilibbed build in the source tree so
dnl that install-sh and config.sub get found.
AC_CONFIG_AUX_DIR($topsrcdir)
# If the language specific compiler does not exist, but the "gcc" directory
# does, we do not build anything. Note, $r is set by the top-level Makefile.
# Note that when we look for the compiler, we search both with and without
# extension to handle cross and canadian cross builds.
compiler_name=cc1obj
rm -f skip-this-dir
AC_MSG_CHECKING(if compiler $compiler_name has been built)
AC_CACHE_VAL(objc_cv_compiler_exists,
[objc_cv_compiler_exists=yes
if test -n "$r"; then
if test -d "$r"/gcc; then
if test -f "$r"/gcc/$compiler_name \
|| test -f "$r"/gcc/$compiler_name.exe; then
true
else
objc_cv_compiler_exists=no
echo "rm -f config.cache config.log multilib.out" > skip-this-dir
fi
fi
fi
])
AC_MSG_RESULT($objc_cv_compiler_exists)
if test x$objc_cv_compiler_exists = xno
then
rm -f Makefile conftest* confdefs* core
exit 0
fi
dnl Checks for programs.
dnl FIXME AC_PROG_CC wants CC to be able to link things, but it may
dnl not be able to.
define([AC_PROG_CC_WORKS],[])
# For ObjC we'll set CC to point at the built gcc, but this will get it into
# the makefiles
AC_PROG_CC
test "$AR" || AR=ar
AC_SUBST(AR)
if test "$RANLIB"; then :
AC_SUBST(RANLIB)
else
AC_PROG_RANLIB
fi
AC_PROG_INSTALL
# We need AC_EXEEXT to keep automake happy in cygnus mode. However,
# at least currently, we never actually build a program, so we never
# need to use $(EXEEXT). Moreover, the test for EXEEXT normally
# fails, because we are probably configuring with a cross compiler
# which cant create executables. So we include AC_EXEEXT to keep
# automake happy, but we dont execute it, since we dont care about
# the result.
if false; then
# autoconf 2.50 runs AC_EXEEXT by default, and the macro expands
# to nothing, so nothing would remain between `then' and `fi' if it
# were not for the `:' below.
:
AC_EXEEXT
fi
dnl Checks for libraries.
dnl Checks for header files.
# Sanity check for the cross-compilation case:
AC_CHECK_HEADER(stdio.h,:,
[AC_MSG_ERROR([Can't find stdio.h.
You must have a usable C system for the target already installed, at least
including headers and, preferably, the library, before you can configure
the Objective C runtime system. If necessary, install gcc now with
\`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
AC_HEADER_STDC
AC_CHECK_HEADERS(sched.h)
# Determine CFLAGS for gthread.
AC_CACHE_CHECK([for gthread cflags],objc_cv_gthread_flags,
[if test -f "$r"/gcc/Makefile
then
objc_cv_gthread_flags=`grep \^GTHREAD_FLAGS "$r"/gcc/Makefile | awk -F= '{ print $2 }'`
else
AC_MSG_ERROR([not found])
fi])
GTHREAD_FLAGS=$objc_cv_gthread_flags
AC_SUBST(GTHREAD_FLAGS)
# Disable shared libs by default
AC_DISABLE_SHARED
# Enable Win32 DLL on MS Windows - FIXME
AC_LIBTOOL_WIN32_DLL
# Use libtool
AC_PROG_LIBTOOL
AC_ARG_ENABLE(objc-gc,
[ --enable-objc-gc enable the use of Boehm's garbage collector with
the GNU Objective-C runtime.],
if [[[ x$enable_objc_gc = xno ]]]; then
OBJC_BOEHM_GC=''
else
OBJC_BOEHM_GC=libobjc_gc.la
fi,
OBJC_BOEHM_GC='')
AC_SUBST(OBJC_BOEHM_GC)
# We need multilib support, but only if configuring for the target.
AC_OUTPUT(Makefile,
[test -z "$CONFIG_HEADERS" || echo timestamp > stamp-h
if test -n "$CONFIG_FILES"; then
if test -n "${with_target_subdir}"; then
# FIXME: We shouldn't need to set ac_file
ac_file=Makefile
. ${topsrcdir}/config-ml.in
fi
fi],
srcdir=${srcdir}
host=${host}
target=${target}
with_target_subdir=${with_target_subdir}
with_multisubdir=${with_multisubdir}
ac_configure_args="--enable-multilib ${ac_configure_args}"
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
topsrcdir=${topsrcdir}
)
dnl Local Variables:
dnl comment-start: "dnl "
dnl comment-end: ""
dnl comment-start-skip: "\\bdnl\\b\\s *"
dnl End:
|
