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openwrt-xburst/target/linux/generic-2.6/patches-2.6.27/004-extra_optimization.patch

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--- a/Makefile
+++ b/Makefile
@@ -549,6 +549,9 @@ endif
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
CHECKFLAGS += $(NOSTDINC_FLAGS)
+# improve gcc optimization
+CFLAGS += $(call cc-option,-funit-at-a-time,)
+
# warn about C99 declaration after statement
KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)