X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=libobjc%2Fconfigure.ac;h=bc3eb2da070c79e4d0bef6859d797e0b72b664f5;hb=9911f32d49966d395e69d87b5dc27d106228ad77;hp=4f6ec14378d468c7c474b29664617a419ae30bb8;hpb=166e6519f5dd15a923af7511cb252235d28d1a53;p=pf3gnuchains%2Fgcc-fork.git

diff --git a/libobjc/configure.ac b/libobjc/configure.ac
index 4f6ec14378d..bc3eb2da070 100644
--- a/libobjc/configure.ac
+++ b/libobjc/configure.ac
@@ -1,6 +1,6 @@
 # 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.
@@ -17,17 +17,18 @@
 #
 #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
@@ -72,11 +73,18 @@ AC_ARG_ENABLE(objc-gc,
 [  --enable-objc-gc       enable the use of Boehm's garbage collector with
                           the GNU Objective-C runtime.],
 [case $enable_objc_gc in
-  no) OBJC_BOEHM_GC='' ;;
-  *) OBJC_BOEHM_GC=libobjc_gc.la ;;
+  no)
+    OBJC_BOEHM_GC=''
+    OBJC_BOEHM_GC_INCLUDES=''
+    ;;
+  *)
+    OBJC_BOEHM_GC=libobjc_gc.la
+    OBJC_BOEHM_GC_INCLUDES='-I$(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
@@ -105,8 +113,7 @@ toplevel_srcdir=\${srcdir}/$toprel
 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
@@ -118,12 +125,6 @@ case $srcdir in
 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
@@ -132,7 +133,7 @@ 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" &&
@@ -156,18 +157,20 @@ AC_SUBST(toolexeclibdir)
 
 # Figure out if we want to name the include directory and the
 #  library name changes differently.
-includedir=include
+includedirname=include
 libext=
 case "${host}" in
   *-darwin*)
     # Darwin is the only target so far that needs a different include directory.
-    includedir=gnu-runtime;
+    includedirname=include-gnu-runtime
     libext=-gnu
     ;;
 esac
-AC_SUBST(includedir)
+AC_SUBST(includedirname)
 AC_SUBST(libext)
 
+AC_CONFIG_HEADERS(config.h)
+
 # --------
 # Programs
 # --------
@@ -182,6 +185,15 @@ 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)
@@ -189,13 +201,15 @@ 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
 
 # -------
@@ -218,18 +232,69 @@ AC_CHECK_HEADERS(sched.h)
 # 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