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-rw-r--r--BaseTools/Source/C/Makefiles/header.makefile5
1 files changed, 4 insertions, 1 deletions
diff --git a/BaseTools/Source/C/Makefiles/header.makefile b/BaseTools/Source/C/Makefiles/header.makefile
index 498c6cf..1b4cad5 100644
--- a/BaseTools/Source/C/Makefiles/header.makefile
+++ b/BaseTools/Source/C/Makefiles/header.makefile
@@ -69,7 +69,10 @@ endif
INCLUDE = $(TOOL_INCLUDE) -I $(MAKEROOT) -I $(MAKEROOT)/Include/Common -I $(MAKEROOT)/Include/ -I $(MAKEROOT)/Include/IndustryStandard -I $(MAKEROOT)/Common/ -I .. -I . $(ARCH_INCLUDE)
BUILD_CPPFLAGS = $(INCLUDE)
-BUILD_OPTFLAGS = -O2
+
+# keep EXTRA_OPTFLAGS last
+BUILD_OPTFLAGS = -O2 $(EXTRA_OPTFLAGS)
+
ifeq ($(DARWIN),Darwin)
# assume clang or clang compatible flags on OS X
BUILD_CFLAGS = -MD -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-deprecated-declarations -Wno-self-assign -Wno-unused-result -nostdlib -g