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-rw-r--r--usr/include/Makefile6
1 files changed, 5 insertions, 1 deletions
diff --git a/usr/include/Makefile b/usr/include/Makefile
index b568a95d1f62..55362f3ab393 100644
--- a/usr/include/Makefile
+++ b/usr/include/Makefile
@@ -8,7 +8,11 @@
# We cannot go as far as adding -Wpedantic since it emits too many warnings.
UAPI_CFLAGS := -std=c90 -Wall -Werror=implicit-function-declaration
-override c_flags = $(UAPI_CFLAGS) -Wp,-MD,$(depfile) -I$(objtree)/usr/include
+# In theory, we do not care -m32 or -m64 for header compile tests.
+# It is here just because CONFIG_CC_CAN_LINK is tested with -m32 or -m64.
+UAPI_CFLAGS += $(filter -m32 -m64, $(KBUILD_CFLAGS))
+
+override c_flags = $(UAPI_CFLAGS) -Wp,-MMD,$(depfile) -I$(objtree)/usr/include
# The following are excluded for now because they fail to build.
#