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-rw-r--r--Makeconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makeconfig b/Makeconfig
index 1e03481b9d..509b5bd3df 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -948,7 +948,7 @@ endif
 ifndef ASFLAGS
 ASFLAGS := $(filter -g% -fdebug-prefix-map=%,$(CFLAGS))
 endif
-ASFLAGS += $(ASFLAGS-config) $(asflags-cpu)
+ASFLAGS += -Werror=undef $(ASFLAGS-config) $(asflags-cpu)
 
 ifndef BUILD_CC
 BUILD_CC = $(CC)