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-rw-r--r--init/Kconfig4
-rw-r--r--net/bpfilter/Makefile5
-rw-r--r--usr/include/Makefile4
3 files changed, 10 insertions, 3 deletions
diff --git a/init/Kconfig b/init/Kconfig
index ed1d82c9f1df..b2ce83c2e84c 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -45,7 +45,9 @@ config CLANG_VERSION
default $(shell,$(srctree)/scripts/clang-version.sh $(CC))
config CC_CAN_LINK
- def_bool $(success,$(srctree)/scripts/cc-can-link.sh $(CC))
+ bool
+ default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(m64-flag)) if 64BIT
+ default $(success,$(srctree)/scripts/cc-can-link.sh $(CC) $(m32-flag))
config CC_HAS_ASM_GOTO
def_bool $(success,$(srctree)/scripts/gcc-goto.sh $(CC))
diff --git a/net/bpfilter/Makefile b/net/bpfilter/Makefile
index 36580301da70..f6209e4827b9 100644
--- a/net/bpfilter/Makefile
+++ b/net/bpfilter/Makefile
@@ -5,14 +5,15 @@
hostprogs := bpfilter_umh
bpfilter_umh-objs := main.o
-KBUILD_HOSTCFLAGS += -I $(srctree)/tools/include/ -I $(srctree)/tools/include/uapi
+KBUILD_HOSTCFLAGS += -I $(srctree)/tools/include/ -I $(srctree)/tools/include/uapi \
+ $(filter -m32 -m64, $(KBUILD_CFLAGS))
HOSTCC := $(CC)
ifeq ($(CONFIG_BPFILTER_UMH), y)
# builtin bpfilter_umh should be compiled with -static
# since rootfs isn't mounted at the time of __init
# function is called and do_execv won't find elf interpreter
-KBUILD_HOSTLDFLAGS += -static
+KBUILD_HOSTLDFLAGS += -static $(filter -m32 -m64, $(KBUILD_CFLAGS))
endif
$(obj)/bpfilter_umh_blob.o: $(obj)/bpfilter_umh
diff --git a/usr/include/Makefile b/usr/include/Makefile
index 5a7ee3e5ed86..55362f3ab393 100644
--- a/usr/include/Makefile
+++ b/usr/include/Makefile
@@ -8,6 +8,10 @@
# We cannot go as far as adding -Wpedantic since it emits too many warnings.
UAPI_CFLAGS := -std=c90 -Wall -Werror=implicit-function-declaration
+# 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.