config/

	* sjlj.m4: New file.
libgcc/
	* configure.ac: Include config/sjlj.m4.
	Remove manual SJLJ check, add GCC_CHECK_SJLJ_EXCEPTIONS and adjust.
	* config.in: Regenerate.
	* configure: Likewise.
	* config.host: Replace enable_sjlj_exceptions by ac_cv_sjlj_exceptions.
libjava/
	* configure.ac: Include config/sjlj.m4.
	Remove manual SJLJ check, add GCC_CHECK_SJLJ_EXCEPTIONS and adjust.
	* include/config.h.in: Regenerate.
	* configure: Likewise.
	* exception.cc: Replace SJLJ_EXCEPTIONS by __USING_SJLJ_EXCEPTIONS__.
	* stacktrace.cc: Likewise.
	* include/default-signal.h: Likewise.
	* sysdep/i386/backtrace.h: Likewise.
libobjc/
	* configure.ac: Remove manual SJLJ check.
	* config.h.in: Regenerate.
	* configure: Likewise.
	* exception.c: Replace SJLJ_EXCEPTIONS by __USING_SJLJ_EXCEPTIONS__.
libstdc++-v3/
	* acinclude.m4 (GLIBCXX_ENABLE_SJLJ_EXCEPTIONS): Delete.
	* configure.ac: Remove GLIBCXX_ENABLE_SJLJ_EXCEPTIONS.
	* config.h.in: Regenerate.
	* configure: Likewise.
	* libsupc++/eh_personality.cc: Replace _GLIBCXX_SJLJ_EXCEPTIONS by
	__USING_SJLJ_EXCEPTIONS__.
	* libsupc++/eh_throw.cc: Likewise.
	* libsupc++/eh_ptr.cc: Likewise.
	* doc/html/manual/appendix_porting.html: Remove
	GLIBCXX_ENABLE_SJLJ_EXCEPTIONS
	* doc/xml/manual/build_hacking.xml: Likewise.
	* doc/html/manual/configure.html: Remove --enable-sjlj-exceptions.
	* doc/xml/manual/configure.xml: Likewise.


git-svn-id: https://gcc.gnu.org/svn/gcc/trunk@223181 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 6 insertions, 56 deletions

diff --git a/libgcc/configure.ac b/libgcc/configure.ac
index 48fd5b9abc1..dfabd808d11 100644
--- a/libgcc/configure.ac
+++ b/libgcc/configure.ac
@@ -10,6 +10,7 @@ sinclude(../config/picflag.m4)
 sinclude(../config/dfp.m4)
 sinclude(../config/unwind_ipinfo.m4)
 sinclude(../config/gthr.m4)
+sinclude(../config/sjlj.m4)
 
 AC_PREREQ(2.64)
 AC_INIT([GNU C Runtime Library], 1.0,,[libgcc])
@@ -230,59 +231,8 @@ AC_SUBST(fixed_point)
 # config.gcc also contains tests of with_system_libunwind.
 GCC_CHECK_UNWIND_GETIPINFO
 
-# The sjlj test is almost duplicated here and in libgo/configure.ac (for C),
-# libstdc++-v3/acinclude.m4 and libjava/configure.ac (for C++), and
-# libobjc/configure.ac (for Objective-C).
-# FIXME: This should be centralized in config/sjlj.m4.
-AC_ARG_ENABLE(sjlj-exceptions,
-  AC_HELP_STRING([--enable-sjlj-exceptions],
-		 [force use of builtin_setjmp for exceptions]),
-  [case "$enableval" in
-   yes|no|auto) ;;
-   *) AC_MSG_ERROR([unknown argument to --enable-sjlj-exceptions]) ;;
-   esac],
-  [enable_sjlj_exceptions=auto])
-
-AC_CACHE_CHECK([whether to use setjmp/longjmp exceptions],
-[libgcc_cv_lib_sjlj_exceptions],
-[AC_LANG_CONFTEST(
-  [AC_LANG_SOURCE([
-void bar ();
-void clean (int *);
-void foo ()
-{
-  int i __attribute__ ((cleanup (clean)));
-  bar();
-}
-])])
-CFLAGS_hold=$CFLAGS
-CFLAGS="--save-temps -fexceptions"
-libgcc_cv_lib_sjlj_exceptions=unknown
-AS_IF([ac_fn_c_try_compile],
-  [if grep _Unwind_SjLj_Resume conftest.s >/dev/null 2>&1; then
-    libgcc_cv_lib_sjlj_exceptions=yes
-  elif grep _Unwind_Resume conftest.s >/dev/null 2>&1; then
-    libgcc_cv_lib_sjlj_exceptions=no
-  fi])
-CFLAGS=$CFLAGS_hold
-rm -f conftest*
-])
-
-if test "$enable_sjlj_exceptions" = "auto"; then
-  enable_sjlj_exceptions=$libgcc_cv_lib_sjlj_exceptions
-fi
-
-case $enable_sjlj_exceptions in
-yes)
-  AC_DEFINE(LIBGCC_SJLJ_EXCEPTIONS, 1,
-	[Define if the C compiler is configured for setjmp/longjmp exceptions.])
-  ;;
-no)
-  ;;
-*)
-  AC_MSG_ERROR([unable to detect exception model])
-  ;;
-esac
+# Check if the compiler is configured for setjmp/longjmp exceptions.
+GCC_CHECK_SJLJ_EXCEPTIONS
 
 AC_ARG_ENABLE([explicit-exception-frame-registration],
   [AC_HELP_STRING([--enable-explicit-exception-frame-registration],
@@ -291,9 +241,9 @@ AC_ARG_ENABLE([explicit-exception-frame-registration],
 [
 force_explicit_eh_registry=
 if test "$enable_explicit_exception_frame_registration" = yes; then
-  if test "$enable_sjlj_exceptions" = yes; then
-    AC_MSG_ERROR([Can't enable both of --enable-sjlj-exceptions
-                  and --enable-explicit-exception-frame-registration])
+  if test $ac_cv_sjlj_exceptions = yes; then
+    AC_MSG_ERROR([Can't --enable-explicit-exception-frame-registration
+                  with setjmp/longjmp exceptions])
   fi
   force_explicit_eh_registry=-DUSE_EH_FRAME_REGISTRY_ALWAYS
 fi