--- a/hotspot/make/linux/makefiles/gcc.make Thu Jan 27 16:11:27 2011 -0800
+++ b/hotspot/make/linux/makefiles/gcc.make Tue Feb 01 11:23:19 2011 -0500
@@ -75,6 +75,11 @@
CFLAGS += -fno-exceptions
CFLAGS += -D_REENTRANT
CFLAGS += -fcheck-new
+# version 4 and above support fvisibility=hidden (matches jni_x86.h file)
+# except 4.1.2 gives pointless warnings that can't be disabled (afaik)
+ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
+CFLAGS += -fvisibility=hidden
+endif
ARCHFLAG = $(ARCHFLAG/$(BUILDARCH))
ARCHFLAG/i486 = -m32 -march=i586