X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=libobjc%2Fconfigure.ac;h=ed532fab02588aebfcd6af608638ef42940d3281;hb=e1c7e835d80ec538b2999827f6c4258e2bbc3bee;hp=91635d299e6c9c09d18ab2c84702fbd867dcc8ab;hpb=08a135f0d71d8a01d459e549452861268286b257;p=pf3gnuchains%2Fgcc-fork.git

diff --git a/libobjc/configure.ac b/libobjc/configure.ac
index 91635d299e6..ed532fab025 100644
--- a/libobjc/configure.ac
+++ b/libobjc/configure.ac
@@ -1,13 +1,13 @@
 # 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, 2009 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)
+#the Free Software Foundation; either version 3, or (at your option)
 #any later version.
 #
 #GCC is distributed in the hope that it will be useful,
@@ -16,18 +16,18 @@
 #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, 59 Temple Place - Suite 330, Boston, MA
-#02111-1307, USA.
+#along with GCC; see the file COPYING3.  If not see
+#<http://www.gnu.org/licenses/>.
 
-AC_PREREQ(2.59)
-AC_INIT
+AC_PREREQ(2.64)
+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
@@ -40,16 +40,6 @@ ORIGINAL_LD_FOR_MULTILIBS=$LD
 # Options
 # -------
 
-# Default to --enable-multilib
-AC_ARG_ENABLE(multilib,
-  [  --enable-multilib       build hella library versions (default)],
-  [case "${enableval}" in
-    yes) multilib=yes ;;
-    no)  multilib=no ;;
-    *)   AC_MSG_ERROR(bad value ${enableval} for multilib option) ;;
-   esac],
-  [multilib=yes])
-
 # We use these options to decide which functions to include.
 AC_ARG_WITH(target-subdir,
 [  --with-target-subdir=SUBDIR
@@ -72,41 +62,28 @@ 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
 # -----------
 
-# When building with srcdir == objdir, links to the source files will
-# be created in directories within the target_subdir.  We have to
-# adjust toplevel_srcdir accordingly, so that configure finds
-# install-sh and other auxiliary files that live in the top-level
-# source directory.
-if test "${srcdir}" = "."; then
-  if test -z "${with_target_subdir}"; then
-    toprel=".."
-  else
-    if test "${with_target_subdir}" != "."; then
-      toprel="${with_multisrctop}../.."
-    else
-      toprel="${with_multisrctop}.."
-    fi
-  fi
-else
-  toprel=".."
-fi
-AC_CONFIG_AUX_DIR(${srcdir}/$toprel)
-toplevel_srcdir=\${srcdir}/$toprel
-AC_SUBST(toplevel_srcdir)
+# Find the rest of the source tree framework.
+AM_ENABLE_MULTILIB(, ..)
 
 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 +95,6 @@ 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 +103,7 @@ 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" &&
@@ -157,16 +128,18 @@ AC_SUBST(toolexeclibdir)
 # Figure out if we want to name the include directory and the
 #  library name changes differently.
 includedirname=include
-libext=
+libsuffix=
 case "${host}" in
   *-darwin*)
     # Darwin is the only target so far that needs a different include directory.
     includedirname=include-gnu-runtime
-    libext=-gnu
+    libsuffix=-gnu
     ;;
 esac
 AC_SUBST(includedirname)
-AC_SUBST(libext)
+AC_SUBST(libsuffix)
+
+AC_CONFIG_HEADERS(config.h)
 
 # --------
 # Programs
@@ -180,7 +153,20 @@ GCC_NO_EXECUTABLES
 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])
+m4_rename_force([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
+    ;;
+  *-cygwin*|*-mingw*)
+    # Tell libtool to build DLLs on Windows
+    extra_ldflags_libobjc='-no-undefined -bindir $(bindir)'
+    ;;
+esac
+AC_SUBST(extra_ldflags_libobjc)
 
 AC_SUBST(CFLAGS)
 
@@ -189,11 +175,15 @@ 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
 
 # -------
@@ -216,43 +206,81 @@ 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 $target_thread_file != single; then
+  AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
+        [Define if the compiler has a thread header that is non single.])
+fi 
+
+# Check if we have thread-local storage
+GCC_CHECK_TLS
+
+AC_MSG_CHECKING([for exception model to use])
+AC_LANG_PUSH(C)
+AC_ARG_ENABLE(sjlj-exceptions,
+  AS_HELP_STRING([--enable-sjlj-exceptions],
+                 [force use of builtin_setjmp for exceptions]),
+[:],
+[dnl Botheration.  Now we've got to detect the exception model.
+dnl Link tests against libgcc.a are problematic since -- at least
+dnl as of this writing -- we've not been given proper -L bits for
+dnl single-tree newlib and libgloss.
+dnl
+dnl This is what AC_TRY_COMPILE would do if it didn't delete the
+dnl conftest files before we got a change to grep them first.
+cat > conftest.$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
 # ------
 
-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}"
-    . ${toplevel_srcdir}/config-ml.in
-  fi
-fi]],
-[[srcdir=${srcdir}
-host=${host}
-target=${target}
-with_target_subdir=${with_target_subdir}
-with_multisubdir=${with_multisubdir}
-ac_configure_args="--enable-multilib ${ac_configure_args}"
-toplevel_srcdir=${toplevel_srcdir}
-CONFIG_SHELL=${CONFIG_SHELL-/bin/sh}
-ORIGINAL_LD_FOR_MULTILIBS="${ORIGINAL_LD_FOR_MULTILIBS}"
-]])
+if test ${multilib} = yes; then
+  multilib_arg="--enable-multilib"
+else
+  multilib_arg=
+fi
 
+AC_CONFIG_FILES([Makefile])
 AC_OUTPUT