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diff make/linux/makefiles/gcc.make @ 229:3e82d72933d0

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6718830: Hotspot fails to build with gcc 4.3 Summary: Fixed linux make file and couple adlc code to meet the changes of gcc 4.3 Reviewed-by: kamg, igor
author xlu
date Thu, 26 Jun 2008 14:15:01 -0700
parents 6470a2a42f92
children 9c2ecc2ffb12
line wrap: on
line diff
--- a/make/linux/makefiles/gcc.make	Tue Jun 24 16:52:31 2008 -0700
+++ b/make/linux/makefiles/gcc.make	Thu Jun 26 14:15:01 2008 -0700
@@ -84,8 +84,17 @@
 
 # Compiler warnings are treated as errors
 WARNINGS_ARE_ERRORS = -Werror
+
 # Except for a few acceptable ones
+# Since GCC 4.3, -Wconversion has changed its meanings to warn these implicit
+# conversions which might affect the values. To avoid that, we need to turn
+# it off explicitly. 
+ifneq "$(shell expr \( $(CC_VER_MAJOR) \> 4 \) \| \( \( $(CC_VER_MAJOR) = 4 \) \& \( $(CC_VER_MINOR) \>= 3 \) \))" "0"
+ACCEPTABLE_WARNINGS = -Wpointer-arith -Wsign-compare
+else
 ACCEPTABLE_WARNINGS = -Wpointer-arith -Wconversion -Wsign-compare
+endif
+
 CFLAGS_WARN/DEFAULT = $(WARNINGS_ARE_ERRORS) $(ACCEPTABLE_WARNINGS)
 # Special cases
 CFLAGS_WARN/BYFILE = $(CFLAGS_WARN/$@)$(CFLAGS_WARN/DEFAULT$(CFLAGS_WARN/$@))