# Process this file with autoconf to produce a configure script.
-# Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2001, 2002, 2003, 2004
-# 2005, 2006, 2009 Free Software Foundation, Inc.
+# Copyright (C) 1994-2018 Free Software Foundation, Inc.
# Originally contributed by Dave Love (d.love@dl.ac.uk).
#
#This file is part of GCC.
#along with GCC; see the file COPYING3. If not see
#<http://www.gnu.org/licenses/>.
-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=3:0:0
+VERSION=4:0:0
AC_SUBST(VERSION)
# This works around the fact that libtool configuration may change LD
[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
# -----------
m4_rename_force([real_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
# extra LD Flags which are required for targets
+ACX_LT_HOST_FLAGS
case "${host}" in
*-darwin*)
# Darwin needs -single_module when linking libobjc
- extra_ldflags_libobjc=-Wl,-single_module
+ extra_ldflags_libobjc='$(lt_host_flags) -Wl,-single_module'
;;
*-cygwin*|*-mingw*)
# Tell libtool to build DLLs on Windows
- extra_ldflags_libobjc='-no-undefined -bindir $(bindir)'
+ extra_ldflags_libobjc='$(lt_host_flags)'
;;
esac
AC_SUBST(extra_ldflags_libobjc)
+# Add CET specific flags if CET is enabled
+GCC_CET_FLAGS(CET_FLAGS)
+XCFLAGS="$XCFLAGS $CET_FLAGS"
+
AC_SUBST(CFLAGS)
+AC_SUBST(XCFLAGS)
AC_CHECK_TOOL(AS, as)
AC_CHECK_TOOL(AR, ar)
# Miscellanea
# -----------
-AC_MSG_CHECKING([for thread model used by GCC])
-target_thread_file=`$CC -v 2>&1 | sed -n 's/^Thread model: //p'`
-AC_MSG_RESULT([$target_thread_file])
-
-if test $target_thread_file != single; then
- AC_DEFINE(HAVE_GTHR_DEFAULT, 1,
- [Define if the compiler has a thread header that is non single.])
-fi
-
# Check if we have thread-local storage
GCC_CHECK_TLS
-AC_MSG_CHECKING([for exception model to use])
-AC_LANG_PUSH(C)
-AC_ARG_ENABLE(sjlj-exceptions,
- AS_HELP_STRING([--enable-sjlj-exceptions],
- [force use of builtin_setjmp for exceptions]),
-[:],
-[dnl Botheration. Now we've got to detect the exception model.
-dnl Link tests against libgcc.a are problematic since -- at least
-dnl as of this writing -- we've not been given proper -L bits for
-dnl single-tree newlib and libgloss.
-dnl
-dnl This is what AC_TRY_COMPILE would do if it didn't delete the
-dnl conftest files before we got a change to grep them first.
-cat > conftest.$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="$CFLAGS"
-dnl work around that we don't have Objective-C support in autoconf
-CFLAGS="-x objective-c -fgnu-runtime -fobjc-exceptions -S"
-if AC_TRY_EVAL(ac_compile); then
- if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1 ; then
- enable_sjlj_exceptions=yes
- elif grep _Unwind_Resume conftest.s >/dev/null 2>&1 ; then
- enable_sjlj_exceptions=no
+gt_BITFIELD_TYPE_MATTERS
+
+# -----------
+# boehm-gc
+# -----------
+
+AC_ARG_ENABLE(objc-gc,
+[AS_HELP_STRING([--enable-objc-gc],
+ [enable use of Boehm's garbage collector with the
+ GNU Objective-C runtime])],,enable_objc_gc=no)
+AC_ARG_WITH([target-bdw-gc],
+[AS_HELP_STRING([--with-target-bdw-gc=PATHLIST],
+ [specify prefix directory for installed bdw-gc package.
+ Equivalent to --with-target-bdw-gc-include=PATH/include
+ plus --with-target-bdw-gc-lib=PATH/lib])])
+AC_ARG_WITH([target-bdw-gc-include],
+[AS_HELP_STRING([--with-target-bdw-gc-include=PATHLIST],
+ [specify directories for installed bdw-gc include files])])
+AC_ARG_WITH([target-bdw-gc-lib],
+[AS_HELP_STRING([--with-target-bdw-gc-lib=PATHLIST],
+ [specify directories for installed bdw-gc library])])
+
+case "$enable_objc_gc" in
+no)
+ use_bdw_gc=no
+ ;;
+*)
+ AC_MSG_CHECKING([for bdw garbage collector])
+ if test "x$with_target_bdw_gc$with_target_bdw_gc_include$with_target_bdw_gc_lib" = x; then
+ dnl no bdw-gw options, assuming bdw-gc in default locations
+ BDW_GC_CFLAGS=
+ BDW_GC_LIBS="-lgc"
+ else
+ dnl bdw-gw options passed by configure flags
+ if test "x$with_target_bdw_gc_include" = x && test "x$with_target_bdw_gc_lib" != x; then
+ AC_MSG_ERROR([found --with-target-bdw-gc-lib but --with-target-bdw-gc-include missing])
+ elif test "x$with_target_bdw_gc_include" != x && test "x$with_target_bdw_gc_lib" = x; then
+ AC_MSG_ERROR([found --with-target-bdw-gc-include but --with-target-bdw-gc-lib missing])
+ else
+ AC_MSG_RESULT([using paths configured with --with-target-bdw-gc options])
+ fi
+ mldir=`${CC-gcc} --print-multi-directory 2>/dev/null`
+ bdw_val=
+ if test "x$with_target_bdw_gc" != x; then
+ for i in `echo $with_target_bdw_gc | tr ',' ' '`; do
+ case "$i" in
+ *=*) sd=${i%%=*}; d=${i#*=} ;;
+ *) sd=.; d=$i ;;
+ esac
+ if test "$mldir" = "$sd"; then
+ bdw_val=$d
+ fi
+ done
+ if test "x$bdw_val" = x; then
+ AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc])
+ fi
+ bdw_inc_dir="$bdw_val/include"
+ bdw_lib_dir="$bdw_val/lib"
+ fi
+ bdw_val=
+ if test "x$with_target_bdw_gc_include" != x; then
+ for i in `echo $with_target_bdw_gc_include | tr ',' ' '`; do
+ case "$i" in
+ *=*) sd=${i%%=*}; d=${i#*=} ;;
+ *) sd=.; d=$i; fallback=$i ;;
+ esac
+ if test "$mldir" = "$sd"; then
+ bdw_val=$d
+ fi
+ done
+ if test "x$bdw_val" = x && test "x$bdw_inc_dir" = x && test "x$fallback" != x; then
+ bdw_inc_dir="$fallback"
+ elif test "x$bdw_val" = x; then
+ AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
+ else
+ bdw_inc_dir="$bdw_val"
+ fi
+ fi
+ bdw_val=
+ if test "x$with_target_bdw_gc_lib" != x; then
+ for i in `echo $with_target_bdw_gc_lib | tr ',' ' '`; do
+ case "$i" in
+ *=*) sd=${i%%=*}; d=${i#*=} ;;
+ *) sd=.; d=$i ;;
+ esac
+ if test "$mldir" = "$sd"; then
+ bdw_val=$d
+ fi
+ done
+ if test "x$bdw_val" = x; then
+ AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
+ fi
+ bdw_lib_dir="$bdw_val"
+ fi
+ if test "x$bdw_inc_dir" = x; then
+ AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-include])
+ fi
+ if test "x$bdw_lib_dir" = x; then
+ AC_MSG_ERROR([no multilib path ($mldir) found in --with-target-bdw-gc-lib])
+ fi
+ BDW_GC_CFLAGS="-I$bdw_inc_dir"
+ if test -f $bdw_lib_dir/libgc.la; then
+ BDW_GC_LIBS="$bdw_lib_dir/libgc.la"
+ else
+ BDW_GC_LIBS="-L$bdw_lib_dir -lgc"
+ fi
+ AC_MSG_RESULT([found])
fi
-fi
-CFLAGS="$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"
+
+ case "$BDW_GC_LIBS" in
+ *libgc.la)
+ use_bdw_gc=yes
+ ;;
+ *)
+ AC_MSG_CHECKING([for system boehm-gc])
+ save_CFLAGS=$CFLAGS
+ save_LIBS=$LIBS
+ CFLAGS="$CFLAGS $BDW_GC_CFLAGS"
+ LIBS="$LIBS $BDW_GC_LIBS"
+ dnl the link test is not good enough for ARM32 multilib detection,
+ dnl first check to link, then to run
+ AC_LINK_IFELSE(
+ [AC_LANG_PROGRAM([#include <gc/gc.h>],[GC_init()])],
+ [
+ AC_RUN_IFELSE([AC_LANG_SOURCE([[
+ #include <gc/gc.h>
+ int main() {
+ GC_init();
+ return 0;
+ }
+ ]])],
+ [system_bdw_gc_found=yes],
+ [system_bdw_gc_found=no],
+ dnl assume no system boehm-gc for cross builds ...
+ [system_bdw_gc_found=no]
+ )
+ ],
+ [system_bdw_gc_found=no])
+ CFLAGS=$save_CFLAGS
+ LIBS=$save_LIBS
+ if test x$enable_objc_gc = xauto && test x$system_bdw_gc_found = xno; then
+ AC_MSG_WARN([system bdw-gc not found, not building libobjc_gc])
+ use_bdw_gc=no
+ elif test x$enable_objc_gc = xyes && test x$system_bdw_gc_found = xno; then
+ AC_MSG_ERROR([system bdw-gc required but not found])
+ else
+ use_bdw_gc=yes
+ AC_MSG_RESULT([found])
+ fi
+ esac
+esac
+
+if test "$use_bdw_gc" = no; then
+ OBJC_GCFLAGS=''
+ OBJC_BOEHM_GC=''
+ OBJC_BOEHM_GC_INCLUDES=''
+ OBJC_BOEHM_GC_LIBS=''
else
- AC_MSG_ERROR([unable to detect exception model])
+ OBJC_GCFLAGS='-DOBJC_WITH_GC=1'
+ OBJC_BOEHM_GC='libobjc_gc$(libsuffix).la'
+ OBJC_BOEHM_GC_INCLUDES=$BDW_GC_CFLAGS
+ OBJC_BOEHM_GC_LIBS=$BDW_GC_LIBS
fi
-AC_LANG_POP(C)
-AC_MSG_RESULT($ac_exception_model_name)
+AC_SUBST(OBJC_GCFLAGS)
+AC_SUBST(OBJC_BOEHM_GC)
+AC_SUBST(OBJC_BOEHM_GC_INCLUDES)
+AC_SUBST(OBJC_BOEHM_GC_LIBS)
+
+# Determine what GCC version number to use in filesystem paths.
+GCC_BASE_VER
# ------
# Output
projects / thirdparty / gcc.git / blobdiff