# 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, 2011 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,
#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_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=4:0:0
AC_SUBST(VERSION)
# This works around the fact that libtool configuration may change 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
[ --enable-objc-gc enable the use of Boehm's garbage collector with
the GNU Objective-C runtime.],
[case $enable_objc_gc in
- no) OBJC_BOEHM_GC='' ;;
- *) OBJC_BOEHM_GC=libobjc_gc.la ;;
+ no)
+ OBJC_GCFLAGS=''
+ OBJC_BOEHM_GC=''
+ OBJC_BOEHM_GC_INCLUDES=''
+ ;;
+ *)
+ OBJC_GCFLAGS='-DOBJC_WITH_GC=1'
+ OBJC_BOEHM_GC='libobjc_gc$(libsuffix).la'
+ OBJC_BOEHM_GC_INCLUDES='-I$(top_srcdir)/../boehm-gc/include -I../boehm-gc/include'
+ case "${host}" in
+ alpha*-dec-osf*)
+ # boehm-gc headers include <pthread.h>, which needs to be compiled
+ # with -pthread on Tru64 UNIX.
+ OBJC_GCFLAGS="${OBJC_GCFLAGS} -pthread"
+ ;;
+ esac
+ ;;
esac],
-[OBJC_BOEHM_GC=''])
+[OBJC_GCFLAGS=''; OBJC_BOEHM_GC=''; OBJC_BOEHM_GC_INCLUDES=''])
+AC_SUBST(OBJC_GCFLAGS)
AC_SUBST(OBJC_BOEHM_GC)
+AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
# -----------
# Directories
# -----------
-# When building with srcdir == objdir, links to the source files will
-# be created in directories within the target_subdir. We have to
-# adjust toplevel_srcdir accordingly, so that configure finds
-# install-sh and other auxiliary files that live in the top-level
-# source directory.
-if test "${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}/$toprel
-AC_SUBST(toplevel_srcdir)
+# Find the rest of the source tree framework.
+AM_ENABLE_MULTILIB(, ..)
AC_CANONICAL_SYSTEM
-_GCC_TOPLEV_NONCANONICAL_TARGET
-AC_SUBST(target_noncanonical)
+ACX_NONCANONICAL_TARGET
# Export source directory.
# These need to be absolute paths, yet at the same time need to
esac
AC_SUBST(glibcpp_srcdir)
-# Process the option "--enable-version-specific-runtime-libs"
-gcc_version_trigger=${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" &&
# Figure out if we want to name the include directory and the
# library name changes differently.
includedirname=include
-libext=
+libsuffix=
case "${host}" in
*-darwin*)
# Darwin is the only target so far that needs a different include directory.
includedirname=include-gnu-runtime
- libext=-gnu
+ libsuffix=-gnu
;;
esac
AC_SUBST(includedirname)
-AC_SUBST(libext)
+AC_SUBST(libsuffix)
+
+AC_CONFIG_HEADERS(config.h)
# --------
# Programs
m4_rename([_AC_ARG_VAR_PRECIOUS],[real_PRECIOUS])
m4_define([_AC_ARG_VAR_PRECIOUS],[])
AC_PROG_CC
-m4_rename([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
+m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
+
+# extra LD Flags which are required for targets
+ACX_LT_HOST_FLAGS
+case "${host}" in
+ *-darwin*)
+ # Darwin needs -single_module when linking libobjc
+ extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module'
+ ;;
+ *-cygwin*|*-mingw*)
+ # Tell libtool to build DLLs on Windows
+ extra_ldflags_libobjc='$(lt_host_flags)'
+ ;;
+esac
+AC_SUBST(extra_ldflags_libobjc)
AC_SUBST(CFLAGS)
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
# -------
# 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 $2 }'`
+# Check if we have thread-local storage
+GCC_CHECK_TLS
+
+AC_MSG_CHECKING([for exception model to use])
+AC_LANG_PUSH(C)
+AC_ARG_ENABLE(sjlj-exceptions,
+ AS_HELP_STRING([--enable-sjlj-exceptions],
+ [force use of builtin_setjmp for exceptions]),
+[:],
+[dnl Botheration. Now we've got to detect the exception model.
+dnl Link tests against libgcc.a are problematic since -- at least
+dnl as of this writing -- we've not been given proper -L bits for
+dnl single-tree newlib and libgloss.
+dnl
+dnl This is what AC_TRY_COMPILE would do if it didn't delete the
+dnl conftest files before we got a change to grep them first.
+cat > conftest.$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
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