# Process this file with autoconf to produce a configure script.
# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
# 2005, 2006 Free Software Foundation, Inc.
# Originally contributed by Dave Love (d.love@dl.ac.uk).
#
#This file is part of GCC.
#
#GCC 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.
#
#GCC 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 GCC; see the file COPYING. If not, write to
#the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
#02110-1301, USA.
AC_PREREQ(2.59)
AC_INIT(package-unused, version-unused,, libobjc)
AC_CONFIG_SRCDIR([objc/objc.h])
GCC_TOPLEV_SUBDIRS
# We need the following definitions because AC_PROG_LIBTOOL relies on them
PACKAGE=libobjc
# Version is pulled out to make it a bit easier to change using sed.
VERSION=2:0:0
AC_SUBST(VERSION)
# This works around the fact that libtool configuration may change LD
# for this particular configuration, but some shells, instead of
# keeping the changes in LD private, export them just because LD is
# exported.
ORIGINAL_LD_FOR_MULTILIBS=$LD
# -------
# Options
# -------
# We use these options to decide which functions to include.
AC_ARG_WITH(target-subdir,
[ --with-target-subdir=SUBDIR
configuring in a subdirectory])
AC_ARG_WITH(cross-host,
[ --with-cross-host=HOST configuring with a cross compiler])
AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
AC_ARG_ENABLE(version-specific-runtime-libs,
[ --enable-version-specific-runtime-libs Specify that runtime libraries should be installed in a compiler-specific directory ],
[case "$enableval" in
yes) version_specific_libs=yes ;;
no) version_specific_libs=no ;;
*) AC_MSG_ERROR([Unknown argument to enable/disable version-specific libs]);;
esac],
[version_specific_libs=no])
AC_MSG_RESULT($version_specific_libs)
AC_ARG_ENABLE(objc-gc,
[ --enable-objc-gc enable the use of Boehm's garbage collector with
the GNU Objective-C runtime.],
[case $enable_objc_gc in
no)
OBJC_BOEHM_GC=''
OBJC_BOEHM_GC_INCLUDES=''
;;
*)
OBJC_BOEHM_GC=libobjc_gc.la
OBJC_BOEHM_GC_INCLUDES='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include'
;;
esac],
[OBJC_BOEHM_GC=''; OBJC_BOEHM_GC_INCLUDES=''])
AC_SUBST(OBJC_BOEHM_GC)
AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
# -----------
# Directories
# -----------
# Find the rest of the source tree framework.
AM_ENABLE_MULTILIB(, ..)
AC_CANONICAL_SYSTEM
ACX_NONCANONICAL_TARGET
# Export source directory.
# These need to be absolute paths, yet at the same time need to
# canonicalize only relative paths, because then amd will not unmount
# drives. Thus the use of PWDCMD: set it to 'pawd' or 'amq -w' if using amd.
case $srcdir in
[\\/$]* | ?:[\\/]*) glibcpp_srcdir=${srcdir} ;;
*) glibcpp_srcdir=`cd "$srcdir" && ${PWDCMD-pwd} || echo "$srcdir"` ;;
esac
AC_SUBST(glibcpp_srcdir)
# Calculate toolexeclibdir
# Also toolexecdir, though it's only used in toolexeclibdir
case ${version_specific_libs} in
yes)
# Need the gcc compiler version to know where to install libraries
# and header files if --enable-version-specific-runtime-libs option
# is selected.
toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
;;
no)
if test -n "$with_cross_host" &&
test x"$with_cross_host" != x"no"; then
# Install a library built with a cross compiler in tooldir, not libdir.
toolexecdir='$(exec_prefix)/$(target_noncanonical)'
toolexeclibdir='$(toolexecdir)/lib'
else
toolexecdir='$(libdir)/gcc-lib/$(target_noncanonical)'
toolexeclibdir='$(libdir)'
fi
multi_os_directory=`$CC -print-multi-os-directory`
case $multi_os_directory in
.) ;; # Avoid trailing /.
*) toolexeclibdir=$toolexeclibdir/$multi_os_directory ;;
esac
;;
esac
AC_SUBST(toolexecdir)
AC_SUBST(toolexeclibdir)
# Figure out if we want to name the include directory and the
# library name changes differently.
includedirname=include
libext=
case "${host}" in
*-darwin*)
# Darwin is the only target so far that needs a different include directory.
includedirname=include-gnu-runtime
libext=-gnu
;;
esac
AC_SUBST(includedirname)
AC_SUBST(libext)
AC_CONFIG_HEADERS(config.h)
# --------
# Programs
# --------
GCC_NO_EXECUTABLES
# We must force CC to /not/ be a precious variable; otherwise
# the wrong, non-multilib-adjusted value will be used in multilibs.
# As a side effect, we have to subst CFLAGS ourselves.
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
AC_PROG_CC
m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
# extra LD Flags which are required for targets
case "${host}" in
*-darwin*)
# Darwin needs -single_module when linking libobjc
extra_ldflags_libobjc=-Wl,-single_module
;;
esac
AC_SUBST(extra_ldflags_libobjc)
AC_SUBST(CFLAGS)
AC_CHECK_TOOL(AS, as)
AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)
AC_PROG_INSTALL
AM_MAINTAINER_MODE
# Enable Win32 DLL on MS Windows - FIXME
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
AM_PROG_CC_C_O
AC_PROG_MAKE_SET
# -------
# Headers
# -------
# Sanity check for the cross-compilation case:
AC_CHECK_HEADER(stdio.h,:,
[AC_MSG_ERROR([Can't find stdio.h.
You must have a usable C system for the target already installed, at least
including headers and, preferably, the library, before you can configure
the Objective C runtime system. If necessary, install gcc now with
\`LANGUAGES=c', then the target library, then build with \`LANGUAGES=objc'.])])
AC_HEADER_STDC
AC_CHECK_HEADERS(sched.h)
# -----------
# Miscellanea
# -----------
AC_MSG_CHECKING([for thread model used by GCC])
target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
AC_MSG_RESULT([$target_thread_file])
if test $target_thread_file != single; then
AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
[Define if the compiler has a thread header that is non single.])
fi
AC_MSG_CHECKING([for exception model to use])
AC_LANG_PUSH(C)
AC_ARG_ENABLE(sjlj-exceptions,
AS_HELP_STRING([--enable-sjlj-exceptions],
[force use of builtin_setjmp for exceptions]),
[:],
[dnl Botheration. Now we've got to detect the exception model.
dnl Link tests against libgcc.a are problematic since -- at least
dnl as of this writing -- we've not been given proper -L bits for
dnl single-tree newlib and libgloss.
dnl
dnl This is what AC_TRY_COMPILE would do if it didn't delete the
dnl conftest files before we got a change to grep them first.
cat > conftest.$ac_ext << EOF
[#]line __oline__ "configure"
@interface Frob
@end
@implementation Frob
@end
int proc();
int foo()
{
@try {
return proc();
}
@catch (Frob* ex) {
return 0;
}
}
EOF
old_CFLAGS="$CFLAGS"
dnl work around that we don't have Objective-C support in autoconf
CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S"
if AC_TRY_EVAL(ac_compile); then
if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
enable_sjlj_exceptions=yes
elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
enable_sjlj_exceptions=no
fi
fi
CFLAGS="$old_CFLAGS"
rm -f conftest*])
if test x$enable_sjlj_exceptions = xyes; then
AC_DEFINE(SJLJ_EXCEPTIONS, 1,
[Define if the compiler is configured for setjmp/longjmp exceptions.])
ac_exception_model_name=sjlj
elif test x$enable_sjlj_exceptions = xno; then
ac_exception_model_name="call frame"
else
AC_MSG_ERROR([unable to detect exception model])
fi
AC_LANG_POP(C)
AC_MSG_RESULT($ac_exception_model_name)
# ------
# Output
# ------
AC_CONFIG_FILES([Makefile])
AC_CONFIG_COMMANDS([default],
[[if test -n "$CONFIG_FILES"; then
if test -n "${with_target_subdir}"; then
# FIXME: We shouldn't need to set ac_file
ac_file=Makefile
LD="${ORIGINAL_LD_FOR_MULTILIBS}"
. ${multi_basedir}/config-ml.in
fi
fi]],
[[srcdir=${srcdir}
host=${host}
target=${target}
with_target_subdir=${with_target_subdir}
with_multisubdir=${with_multisubdir}
ac_configure_args="--enable-multilib ${ac_configure_args}"
multi_basedir=${multi_basedir}
CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
]])
AC_OUTPUT