| # 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 |