c3ff2a519 "powerpc/32: add stack protector support" addes stack protector support so now powerpc's "prepare" target depends on prepare0 (via stack_protector_prepare target).
It works fine until we try build an external module where it fails with: Run: 'make -j128 SYSSRC=/home/aik/p/kernel SYSOUT=/home/aik/pbuild/kernel-le-pseries/ ARCH=powerpc' make[1]: Entering directory '/home/aik/p/kernel' make[2]: Entering directory '/home/aik/pbuild/kernel-le-pseries' make[2]: *** No rule to make target 'prepare0', needed by 'stack_protector_prepare'. Stop. The reason for that is that the main Linux Makefile defines "prepare0" only if KBUILD_EXTMOD=="". This hacks powerpc's Makefile to make external modules build again. Fixes: c3ff2a519 "powerpc/32: add stack protector support" Signed-off-by: Alexey Kardashevskiy <a...@ozlabs.ru> --- It has been suggested that there is a better way of fixing this hence RFC. --- arch/powerpc/Makefile | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 488c9ed..0492f62 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -419,7 +419,11 @@ archheaders: ifdef CONFIG_STACKPROTECTOR prepare: stack_protector_prepare +ifeq ($(KBUILD_EXTMOD),) stack_protector_prepare: prepare0 +else +stack_protector_prepare: +endif ifdef CONFIG_PPC64 $(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "PACA_CANARY") print $$3;}' include/generated/asm-offsets.h)) else -- 2.17.1