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-rw-r--r--configure.ac32
1 files changed, 32 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 315fa3b..e81fcdb 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