toolchain: include TARGET_GLOBAL_CFLAGS in wrappers

Some flags we want to use everywhere and the build puts those into the
TARGET_GLOBAL_CFLAGS variable.  These are things like stack-protector
and -D__BRILLO__ (which can in turn affect some bionic headers).

BUG=b:26861037
TEST=building python for arm/x86 works now

Change-Id: I46c617d2a27bc1dfbce9775e744e23a61871ef02
diff --git a/toolchain/Android.mk b/toolchain/Android.mk
index 8602138..7716705 100644
--- a/toolchain/Android.mk
+++ b/toolchain/Android.mk
@@ -16,7 +16,7 @@
 	$(hide)mkdir -p $(dir $@)
 	$(hide)sed \
 		-e 's:@CC@:$(notdir $(TARGET_CC)):' \
-		-e 's:@CFLAGS@:$(foreach p,$(TARGET_C_INCLUDES) $(EXTERNAL_PACKAGES_INCLUDE),-isystem "$${ANDROID_BUILD_TOP}/$(p)"):' \
+		-e 's:@CFLAGS@:$(foreach p,$(TARGET_C_INCLUDES) $(EXTERNAL_PACKAGES_INCLUDE),-isystem "$${ANDROID_BUILD_TOP}/$(p)") $(filter-out -Werror=%,$(TARGET_GLOBAL_CFLAGS)):' \
 		-e 's:@LDFLAGS@:-B"$(patsubst $(PRODUCT_OUT)/%,$${ANDROID_PRODUCT_OUT}/%,$(TARGET_OUT_INTERMEDIATE_LIBRARIES))":' \
 		-e 's:@ROOT_SUBDIR@:$(3RD_PARTY_ROOT_SUBDIR):g' \
 		-e 's:@LIBDIR@:$(3RD_PARTY_LIBDIR):g' \
@@ -41,8 +41,7 @@
 	$(hide)mkdir -p $(dir $@)
 	$(hide)sed \
 		-e 's:@CXX@:$(notdir $(TARGET_CXX)):' \
-		-e 's:@CXXFLAGS@:$(foreach p,$(TARGET_C_INCLUDES) external/libcxx/include external/libcxxabi/include,-isystem "$${ANDROID_BUILD_TOP}/$(p)"):' \
-		-e 's:@CFLAGS@:$(foreach p,$(TARGET_C_INCLUDES),-isystem "$${ANDROID_BUILD_TOP}/$(p)"):' \
+		-e 's:@CXXFLAGS@:$(foreach p,$(TARGET_C_INCLUDES) external/libcxx/include external/libcxxabi/include,-isystem "$${ANDROID_BUILD_TOP}/$(p)") $(filter-out -Werror=%,$(TARGET_GLOBAL_CFLAGS)):' \
 		-e 's:@LDFLAGS@:-B"$(patsubst $(PRODUCT_OUT)/%,$${ANDROID_PRODUCT_OUT}/%,$(TARGET_OUT_INTERMEDIATE_LIBRARIES))":' \
 		-e 's:@ROOT_SUBDIR@:$(3RD_PARTY_ROOT_SUBDIR):g' \
 		-e 's:@LIBDIR@:$(3RD_PARTY_LIBDIR):g' \