2008-02-20 Paolo Bonzini <bonzini@gnu.org>

        PR bootstrap/32009
        PR bootstrap/32161

        * configure.ac (CFLAGS_FOR_TARGET, CXXFLAGS_FOR_TARGET): Compute here.
        * configure: Regenerate.

        * Makefile.def: Define stage_libcflags for all bootstrap stages.
        * Makefile.tpl (BOOT_LIBCFLAGS, STAGE2_LIBCFLAGS, STAGE3_LIBCFLAGS,
        STAGE4_LIBCFLAGS): New.
        (CFLAGS_FOR_TARGET, CXXFLAGS_FOR_TARGET): Subst from autoconf, without
        $(SYSROOT_CFLAGS_FOR_TARGET) and $(DEBUG_PREFIX_CFLAGS_FOR_TARGET).
        (BASE_TARGET_EXPORTS): Append them here to C{,XX}FLAGS.
        (EXTRA_TARGET_FLAGS): Append them here to {LIB,}C{,XX}FLAGS.
        (configure-stage[+id+]-[+prefix+][+module+]): Pass stage_libcflags
        for target modules.  Don't export LIBCFLAGS.
        (all-stage[+id+]-[+prefix+][+module+]): Pass stage_libcflags; pass
        $(BASE_FLAGS_TO_PASS) where [+args+] was passed, and [+args+] after
        the overridden CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
        (invocations of `all'): Replace $(TARGET_FLAGS_TO_PASS) with
        $(EXTRA_TARGET_FLAGS), $(FLAGS_TO_PASS) with $(EXTRA_HOST_FLAGS).
        * Makefile.in: Regenerate.

config:
2008-02-20  Paolo Bonzini  <bonzini@gnu.org>

        PR bootstrap/32009
        * mh-ppc-darwin (BOOT_CFLAGS): Reenable.

1 files changed, 32 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index 315fa3bd801..e81fcdbfe9a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1667,6 +1667,38 @@ AC_ARG_WITH([debug-prefix-map],
   [DEBUG_PREFIX_CFLAGS_FOR_TARGET=])
 AC_SUBST(DEBUG_PREFIX_CFLAGS_FOR_TARGET)
 
+# During gcc bootstrap, if we use some random cc for stage1 then CFLAGS
+# might be empty or "-g".  We don't require a C++ compiler, so CXXFLAGS
+# might also be empty (or "-g", if a non-GCC C++ compiler is in the path).
+# We want to ensure that TARGET libraries (which we know are built with
+# gcc) are built with "-O2 -g", so include those options when setting
+# CFLAGS_FOR_TARGET and CXXFLAGS_FOR_TARGET.
+if test "x$CFLAGS_FOR_TARGET" = x; then
+  CFLAGS_FOR_TARGET=$CFLAGS
+  case " $CFLAGS " in
+    *" -O2 "*) ;;
+    *) CFLAGS_FOR_TARGET="-O2 $CFLAGS" ;;
+  esac
+  case " $CFLAGS " in
+    *" -g "* | *" -g3 "*) ;;
+    *) CFLAGS_FOR_TARGET="-g $CFLAGS" ;;
+  esac
+fi
+AC_SUBST(CFLAGS_FOR_TARGET)
+
+if test "x$CXXFLAGS_FOR_TARGET" = x; then
+  CXXFLAGS_FOR_TARGET=$CXXFLAGS
+  case " $CXXFLAGS " in
+    *" -O2 "*) ;;
+    *) CXXFLAGS_FOR_TARGET="-O2 $CXXFLAGS" ;;
+  esac
+  case " $CXXFLAGS " in
+    *" -g "* | *" -g3 "*) ;;
+    *) CXXFLAGS_FOR_TARGET="-g $CXXFLAGS" ;;
+  esac
+fi
+AC_SUBST(CXXFLAGS_FOR_TARGET)
+
 # Handle --with-headers=XXX.  If the value is not "yes", the contents of
 # the named directory are copied to $(tooldir)/sys-include.
 if test x"${with_headers}" != x && test x"${with_headers}" != xno ; then