[PATCH v2 2/5] microblaze: Pass -m{big,little}-endian through KBUILD_CPPFLAGS

[Thomas Weißschuh]

These parameters are also necessary for preprocessed files which do not
contain code. One example is arch/microblaze/kernel/vmlinux.lds.S which
inspects __MICROBLAZEEL__ for the definition of 'jiffies_64'.
As currently the endianness is not passed from the build system for this
file, the preprocessor will instead use the default endianness of the
toolchain. When a default big-endian toolchain is used to build a
little-endian kernel, that kernel will hang during delay calibration
as 'jiffies' never changes.

Make sure all preprocessor invocations know about the correct endianness
by passing it through KBUILD_CPPFLAGS. This will also be inherited by
CFLAGS and AFLAGS.

Fixes: 02b08045a030 ("microblaze: Add support for little-endian Microblaze")
Signed-off-by: Thomas Weißschuh <linux@xxxxxxxxxxxxxx>
---
 arch/microblaze/Makefile | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/arch/microblaze/Makefile b/arch/microblaze/Makefile
index 02e6be9c5b0d..9087a366ce78 100644
--- a/arch/microblaze/Makefile
+++ b/arch/microblaze/Makefile
@@ -34,12 +34,10 @@ CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_BARREL) += -mxl-barrel-shift
 CPUFLAGS-$(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR) += -mxl-pattern-compare
 
 ifdef CONFIG_CPU_BIG_ENDIAN
-KBUILD_CFLAGS += -mbig-endian
-KBUILD_AFLAGS += -mbig-endian
+KBUILD_CPPFLAGS += -mbig-endian
 KBUILD_LDFLAGS += -EB
 else
-KBUILD_CFLAGS += -mlittle-endian
-KBUILD_AFLAGS += -mlittle-endian
+KBUILD_CPPFLAGS += -mlittle-endian
 KBUILD_LDFLAGS += -EL
 endif
 

-- 
2.55.0