To use Fastfpe, a user is supposed to enable CONFIG_FPE_FASTFPE and put downstream source files into arch/arm/fastfpe/.
It is not working for O= build because $(wildcard arch/arm/fastfpe) checks if it exists in $(objtree), not in $(srctree). Add the $(srctree)/ prefix to fix it. While I was here, I slightly refactored the code. Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com> --- KernelVersion: 5.2 arch/arm/Makefile | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/arch/arm/Makefile b/arch/arm/Makefile index f863c6935d0e..792f7fa16a24 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -271,14 +271,9 @@ endif export TEXT_OFFSET GZFLAGS MMUEXT -# Do we have FASTFPE? -FASTFPE :=arch/arm/fastfpe -ifeq ($(FASTFPE),$(wildcard $(FASTFPE))) -FASTFPE_OBJ :=$(FASTFPE)/ -endif - core-$(CONFIG_FPE_NWFPE) += arch/arm/nwfpe/ -core-$(CONFIG_FPE_FASTFPE) += $(FASTFPE_OBJ) +# Put arch/arm/fastfpe/ to use this. +core-$(CONFIG_FPE_FASTFPE) += $(patsubst $(srctree)/%,%,$(wildcard $(srctree)/arch/arm/fastfpe/)) core-$(CONFIG_VFP) += arch/arm/vfp/ core-$(CONFIG_XEN) += arch/arm/xen/ core-$(CONFIG_KVM_ARM_HOST) += arch/arm/kvm/ -- 2.17.1
