From: Pali Rohár pali@kernel.org
When CONFIG_TARGET_CPU is specified then pass its value to the compiler -mcpu option. This fixes following build error when building kernel with powerpc e500 SPE capable cross compilers:
BOOTAS arch/powerpc/boot/crt0.o powerpc-linux-gnuspe-gcc: error: unrecognized argument in option ‘-mcpu=powerpc’ powerpc-linux-gnuspe-gcc: note: valid arguments to ‘-mcpu=’ are: 8540 8548 native make[1]: *** [arch/powerpc/boot/Makefile:231: arch/powerpc/boot/crt0.o] Error 1
Similar change was already introduced for the main powerpc Makefile in commit 446cda1b21d9 ("powerpc/32: Don't always pass -mcpu=powerpc to the compiler").
Fixes: 40a75584e526 ("powerpc/boot: Build wrapper for an appropriate CPU") Cc: stable@vger.kernel.org # 446cda1b21d9 ("powerpc/32: Don't always pass -mcpu=powerpc to the compiler") Signed-off-by: Pali Rohár pali@kernel.org Signed-off-by: Christophe Leroy christophe.leroy@csgroup.eu --- arch/powerpc/boot/Makefile | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/boot/Makefile b/arch/powerpc/boot/Makefile index d32d95aea5d6..295f76df13b5 100644 --- a/arch/powerpc/boot/Makefile +++ b/arch/powerpc/boot/Makefile @@ -39,13 +39,19 @@ BOOTCFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ $(LINUXINCLUDE)
ifdef CONFIG_PPC64_BOOT_WRAPPER -ifdef CONFIG_CPU_LITTLE_ENDIAN -BOOTCFLAGS += -m64 -mcpu=powerpc64le +BOOTCFLAGS += -m64 else -BOOTCFLAGS += -m64 -mcpu=powerpc64 +BOOTCFLAGS += -m32 endif + +ifdef CONFIG_TARGET_CPU_BOOL +BOOTCFLAGS += -mcpu=$(CONFIG_TARGET_CPU) +else ifdef CONFIG_PPC64_BOOT_WRAPPER +ifdef CONFIG_CPU_LITTLE_ENDIAN +BOOTCFLAGS += -mcpu=powerpc64le else -BOOTCFLAGS += -m32 -mcpu=powerpc +BOOTCFLAGS += -mcpu=powerpc64 +endif endif
BOOTCFLAGS += -isystem $(shell $(BOOTCC) -print-file-name=include)