[PATCH 3/7] [HACK] pass endianess flag to LTO linker

From: Arnd Bergmann
Date: Tue Feb 20 2018 - 17:01:16 EST


We need some way to pass -mbig-endian to the linker during the
LTO link stage, otherwise we get a waning like

arm-linux-gnueabi/bin/ld: arch/arm/lib/clearbit.o: compiled for a big endian system and target is little endian

for each file we link in.

There is probably a better method of passing that flag, I'm just
adding it to a different hack that I added earlier for x86 LTO
here.

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
---
arch/arm/Makefile | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/arm/Makefile b/arch/arm/Makefile
index 33b7eb4502aa..f39c2e2d55c0 100644
--- a/arch/arm/Makefile
+++ b/arch/arm/Makefile
@@ -49,11 +49,13 @@ endif

ifeq ($(CONFIG_CPU_BIG_ENDIAN),y)
KBUILD_CPPFLAGS += -mbig-endian
+KBUILD_BIARCHFLAGS += -mbig-endian
CHECKFLAGS += -D__ARMEB__
AS += -EB
LD += -EB
else
KBUILD_CPPFLAGS += -mlittle-endian
+KBUILD_BIARCHFLAGS += -mlittle-endian
CHECKFLAGS += -D__ARMEL__
AS += -EL
LD += -EL
--
2.9.0