diff options
Diffstat (limited to 'arch/powerpc/Makefile')
| -rw-r--r-- | arch/powerpc/Makefile | 39 |
1 files changed, 24 insertions, 15 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 6aa348b35c93..704d9047bebe 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -30,11 +30,10 @@ endif endif endif -ifeq ($(CROSS_COMPILE),) -KBUILD_DEFCONFIG := $(shell uname -m)_defconfig -else -KBUILD_DEFCONFIG := ppc64_defconfig -endif +# If we're on a ppc/ppc64/ppc64le machine use that defconfig, otherwise just use +# ppc64_defconfig because we have nothing better to go on. +uname := $(shell uname -m) +KBUILD_DEFCONFIG := $(if $(filter ppc%,$(uname)),$(uname),ppc64)_defconfig ifdef CONFIG_PPC64 new_nm := $(shell if $(NM) --help 2>&1 | grep -- '--synthetic' > /dev/null; then echo y; else echo n; fi) @@ -109,11 +108,14 @@ aflags-$(CONFIG_CPU_LITTLE_ENDIAN) += -mlittle-endian ifeq ($(HAS_BIARCH),y) KBUILD_CFLAGS += -m$(BITS) -KBUILD_AFLAGS += -m$(BITS) -Wl,-a$(BITS) +KBUILD_AFLAGS += -m$(BITS) KBUILD_LDFLAGS += -m elf$(BITS)$(LDEMULATION) KBUILD_ARFLAGS += --target=elf$(BITS)-$(GNUTARGET) endif +cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard=tls +cflags-$(CONFIG_STACKPROTECTOR) += -mstack-protector-guard-reg=r2 + LDFLAGS_vmlinux-y := -Bstatic LDFLAGS_vmlinux-$(CONFIG_RELOCATABLE) := -pie LDFLAGS_vmlinux := $(LDFLAGS_vmlinux-y) @@ -165,9 +167,9 @@ CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power8 CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power9,-mtune=power8) else CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mtune=power7,$(call cc-option,-mtune=power5)) -CFLAGS-$(CONFIG_GENERIC_CPU) += $(call cc-option,-mcpu=power5,-mcpu=power4) +CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=power4 endif -else +else ifdef CONFIG_PPC_BOOK3E_64 CFLAGS-$(CONFIG_GENERIC_CPU) += -mcpu=powerpc64 endif @@ -423,9 +425,12 @@ archclean: archprepare: checkbin arch/powerpc/lib/crtsavres.o -# Use the file '.tmp_gas_check' for binutils tests, as gas won't output -# to stdout and these checks are run even on install targets. -TOUT := .tmp_gas_check +ifdef CONFIG_STACKPROTECTOR +prepare: stack_protector_prepare + +stack_protector_prepare: prepare0 + $(eval KBUILD_CFLAGS += -mstack-protector-guard-offset=$(shell awk '{if ($$2 == "TASK_CANARY") print $$3;}' include/generated/asm-offsets.h)) +endif # Check toolchain versions: # - gcc-4.6 is the minimum kernel-wide version so nothing required. @@ -437,7 +442,11 @@ checkbin: echo -n '*** Please use a different binutils version.' ; \ false ; \ fi - - -CLEAN_FILES += $(TOUT) - + @if test "x${CONFIG_FTRACE_MCOUNT_USE_RECORDMCOUNT}" = "xy" -a \ + "x${CONFIG_LD_IS_BFD}" = "xy" -a \ + "${CONFIG_LD_VERSION}" = "23700" ; then \ + echo -n '*** binutils 2.37 drops unused section symbols, which recordmcount ' ; \ + echo 'is unable to handle.' ; \ + echo '*** Please use a different binutils version.' ; \ + false ; \ + fi |