configure.ac (BACKTRACESPEC): Remove definition, but continue to AC_SUBST…

configure.ac (BACKTRACESPEC): Remove definition, but continue to AC_SUBST definition from configure.host.

	* configure.ac (BACKTRACESPEC): Remove definition, but continue to
	AC_SUBST definition from configure.host.
	* configure.host: Don't use -fno-omit-frame-pointer. Set BACKTRACESPEC
	to -fomit-frame-pointer on 32-bit x86 targets.

From-SVN: r100469

libjava/ChangeLog

+2005-06-01  Bryce McKinlay  <mckinlay@redhat.com>
+
+	* configure.ac (BACKTRACESPEC): Remove definition, but continue to
+	AC_SUBST definition from configure.host.
+	* configure.host: Don't use -fno-omit-frame-pointer. Set BACKTRACESPEC
+	to -fomit-frame-pointer on 32-bit x86 targets.
+
 2005-06-01  Tom Tromey  <tromey@redhat.com>
 
 	* java/io/ObjectInputStream.java (currentLoader): Fixed typo.

libjava/configure.ac

@@ -1148,6 +1148,7 @@ AC_SUBST(ZINCS)
 AC_SUBST(DIVIDESPEC)
 AC_SUBST(CHECKREFSPEC)
 AC_SUBST(EXCEPTIONSPEC)
+AC_SUBST(BACKTRACESPEC)
 AC_SUBST(IEEESPEC)
 
 AM_CONDITIONAL(NATIVE, test "$NATIVE" = yes)
@@ -1345,15 +1346,6 @@ if test "$enable_sjlj_exceptions" = yes; then
    SIGNAL_HANDLER_AUX=
 fi
 
-# Define here any compiler flags that you need in order to make backtrace() work.
-BACKTRACESPEC=
-case "${host}" in
- x86_64*-*-linux*|i?86-*)
-    BACKTRACESPEC=-fno-omit-frame-pointer
-    ;;
-esac
-AC_SUBST(BACKTRACESPEC)
-
 AC_SUBST(SYSDEP_SOURCES)
 
 if test -z "$SIGNAL_HANDLER_AUX"; then

libjava/configure.host

@@ -69,6 +69,7 @@ echo "$target"
 DIVIDESPEC=-fuse-divide-subroutine
 EXCEPTIONSPEC=-fnon-call-exceptions
 CHECKREFSPEC=
+BACKTRACESPEC=
 
 # This case statement supports per-CPU defaults.
 case "${host}" in
@@ -94,17 +95,18 @@ case "${host}" in
 	;;
   i686-*|i586-*|i486-*|i386-*)
 	sysdeps_dir=i386
-	libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
+	libgcj_flags="${libgcj_flags} -ffloat-store"
 	libgcj_interpreter=yes
 	libgcj_cxxflags=
 	libgcj_cflags=
 	DIVIDESPEC=-fno-use-divide-subroutine
+	BACKTRACESPEC=-fomit-frame-pointer
 	enable_hash_synchronization_default=yes
 	slow_pthread_self=yes
 	;;
   x86_64-*)
 	sysdeps_dir=x86-64
-	libgcj_flags="${libgcj_flags} -ffloat-store -fno-omit-frame-pointer"
+	libgcj_flags="${libgcj_flags} -ffloat-store"
 	libgcj_cxxflags=
 	libgcj_cflags=
 	DIVIDESPEC=-f%{m32:no-}use-divide-subroutine
@@ -266,6 +268,8 @@ esac
 case "${host}" in
   *-cygwin* | *-mingw*)
 	fallback_backtrace_h=sysdep/i386/backtrace.h  
+	# We need a frame pointer on Windows, so override BACKTRACESPEC
+  	BACKTRACESPEC=
   ;;
 esac