path: root/Makefile
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authorLuc Van Oostenryck <luc.vanoostenryck@gmail.com>2018-05-28 20:27:35 +0200
committerMasahiro Yamada <yamada.masahiro@socionext.com>2018-05-29 22:05:08 +0900
commit145167650b96967d6b726efef978c74831e6b2bd (patch)
treed44acd9ef948a6ac63f1b72194a4b1691478bac1 /Makefile
parentkbuild: $(CHECK) doesnt need NOSTDINC_FLAGS twice (diff)
kbuild: add endianness flag to CHEKCFLAGS
The kernel depends on macros like __BYTE_ORDER__, __BIG_ENDIAN__ or __LITTLE_ENDIAN__. OTOH, sparse doesn't know about the endianness of the kernel and by default uses the same as the machine on which sparse was built. Ensure that sparse can predefine the macros corresponding to how the kernel was configured by adding -m{big,little}-endian to CHECKFLAGS in the main Makefile (and so for all archs). Also, remove the equivalent done in arch specific Makefiles. Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'Makefile')
1 files changed, 3 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index 1617ab517819..68982ba7bc2f 100644
--- a/Makefile
+++ b/Makefile
@@ -874,6 +874,9 @@ ifeq ($(CONFIG_STRIP_ASM_SYMS),y)
LDFLAGS_vmlinux += $(call ld-option, -X,)
+# insure the checker run with the right endianness
+CHECKFLAGS += $(if $(CONFIG_CPU_BIG_ENDIAN),-mbig-endian,-mlittle-endian)
# Default kernel image to build when no specific target is given.
# KBUILD_IMAGE may be overruled on the command line or
# set in the environment