# Process this file with autoconf to produce a configure script.
# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
-# Free Software Foundation, Inc.
+# 2005, 2006 Free Software Foundation, Inc.
# Originally contributed by Dave Love (d.love@dl.ac.uk).
#
#This file is part of GCC.
#
#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, 59 Temple Place - Suite 330, Boston, MA
-#02111-1307, USA.
+#the Free Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+#02110-1301, USA.
AC_PREREQ(2.59)
-AC_INIT
+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=1:0:0
+VERSION=2:0:0
AC_SUBST(VERSION)
# This works around the fact that libtool configuration may change LD
[ --enable-objc-gc enable the use of Boehm's garbage collector with
the GNU Objective-C runtime.],
[case $enable_objc_gc in
- no) OBJC_BOEHM_GC='' ;;
- *) OBJC_BOEHM_GC=libobjc_gc.la ;;
+ no)
+ OBJC_BOEHM_GC=''
+ OBJC_BOEHM_GC_INCLUDES=''
+ ;;
+ *)
+ OBJC_BOEHM_GC=libobjc_gc.la
+ OBJC_BOEHM_GC_INCLUDES='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include'
+ ;;
esac],
-[OBJC_BOEHM_GC=''])
+[OBJC_BOEHM_GC=''; OBJC_BOEHM_GC_INCLUDES=''])
AC_SUBST(OBJC_BOEHM_GC)
+AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
# -----------
# Directories
AC_SUBST(toplevel_srcdir)
AC_CANONICAL_SYSTEM
-_GCC_TOPLEV_NONCANONICAL_TARGET
-AC_SUBST(target_noncanonical)
+ACX_NONCANONICAL_TARGET
# Export source directory.
# These need to be absolute paths, yet at the same time need to
esac
AC_SUBST(glibcpp_srcdir)
-# Process the option "--enable-version-specific-runtime-libs"
-gcc_version_trigger=${srcdir}/../gcc/version.c
-gcc_version_full=`grep version_string ${gcc_version_trigger} | sed -e 's/.*\"\([[^ \"]]*\)[[ \"]].*/\1/'`
-gcc_version=`echo ${gcc_version_full} | sed -e 's/\([^ ]*\) .*/\1/'`
-AC_SUBST(gcc_version)
-
# Calculate toolexeclibdir
# Also toolexecdir, though it's only used in toolexeclibdir
case ${version_specific_libs} in
# and header files if --enable-version-specific-runtime-libs option
# is selected.
toolexecdir='$(libdir)/gcc/$(target_noncanonical)'
- toolexeclibdir='$(toolexecdir)/'${gcc_version}'$(MULTISUBDIR)'
+ toolexeclibdir='$(toolexecdir)/$(gcc_version)$(MULTISUBDIR)'
;;
no)
if test -n "$with_cross_host" &&
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
-# Disable shared libs by default
-AC_DISABLE_SHARED
+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
# -------
# Miscellanea
# -----------
-# Determine CFLAGS for gthread.
-# FIXME: the current implementation is dependent on the 'r' variable
-# passed down from the top level
-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 $2 }'`
+AC_MSG_CHECKING([for thread model used by GCC])
+target_thread_file=`$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([not found])
-fi])
-GTHREAD_FLAGS=$objc_cv_gthread_flags
-AC_SUBST(GTHREAD_FLAGS)
+ AC_MSG_ERROR([unable to detect exception model])
+fi
+AC_LANG_POP(C)
+AC_MSG_RESULT($ac_exception_model_name)
# ------
# Output
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