(LIBGCC2_CFLAGS): Add TARGET_LIBGCC2_CFLAGS.

From-SVN: r10211

gcc/Makefile.in

@@ -229,12 +229,15 @@ LIBGCC2 = libgcc2.a
 # -g1 causes output of debug info only for file-scope entities.
 # we use this here because that should be enough, and also
 # so that -g1 will be tested.
-LIBGCC2_CFLAGS = -O2 $(LIBGCC2_INCLUDES) $(GCC_CFLAGS) -g1
+LIBGCC2_CFLAGS = -O2 $(LIBGCC2_INCLUDES) $(GCC_CFLAGS) $(TARGET_LIBGCC2_CFLAGS) -g1
 
 # Additional options to use when compiling libgcc2.a.
 # Some targets override this to -Iinclude
 LIBGCC2_INCLUDES =
 
+# Additional target-dependent options for compiling libgcc2.a.
+TARGET_LIBGCC2_CFLAGS = 
+
 # Things which must be built before building libgcc2.a.
 # Some targets override this to stmp-int-hdrs
 LIBGCC2_DEPS =