diff options
Diffstat (limited to 'arch/powerpc/Makefile')
| -rw-r--r-- | arch/powerpc/Makefile | 50 |
1 files changed, 40 insertions, 10 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 07a480861f78..05f464eb6952 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -66,7 +66,10 @@ endif UTS_MACHINE := $(OLDARCH) ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) -override CC += -mlittle-endian -mno-strict-align +override CC += -mlittle-endian +ifneq ($(COMPILER),clang) +override CC += -mno-strict-align +endif override AS += -mlittle-endian override LD += -EL override CROSS32CC += -mlittle-endian @@ -113,14 +116,14 @@ else endif endif -CFLAGS-$(CONFIG_PPC64) := -mtraceback=no +CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no) ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) -CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,-mcall-aixdesc) +CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,$(call cc-option,-mcall-aixdesc)) AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2) else -CFLAGS-$(CONFIG_PPC64) += -mcall-aixdesc +CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcall-aixdesc) endif -CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,-mminimal-toc) +CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mcmodel=medium,$(call cc-option,-mminimal-toc)) CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mno-pointers-to-nested-functions) CFLAGS-$(CONFIG_PPC32) := -ffixed-r2 $(MULTIPLEWORD) @@ -160,7 +163,8 @@ asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1) KBUILD_CPPFLAGS += -Iarch/$(ARCH) $(asinstr) KBUILD_AFLAGS += -Iarch/$(ARCH) $(AFLAGS-y) -KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y) +KBUILD_CFLAGS += $(call cc-option,-msoft-float) +KBUILD_CFLAGS += -pipe -Iarch/$(ARCH) $(CFLAGS-y) CPP = $(CC) -E $(KBUILD_CFLAGS) CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ @@ -192,7 +196,7 @@ KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm) # Never use string load/store instructions as they are # often slow when they are implemented at all -KBUILD_CFLAGS += -mno-string +KBUILD_CFLAGS += $(call cc-option,-mno-string) ifeq ($(CONFIG_6xx),y) KBUILD_CFLAGS += -mcpu=powerpc @@ -269,6 +273,21 @@ bootwrapper_install: %.dtb: scripts $(Q)$(MAKE) ARCH=ppc64 $(build)=$(boot) $(patsubst %,$(boot)/%,$@) +# Used to create 'merged defconfigs' +# To use it $(call) it with the first argument as the base defconfig +# and the second argument as a space separated list of .config files to merge, +# without the .config suffix. +define merge_into_defconfig + $(Q)$(CONFIG_SHELL) $(srctree)/scripts/kconfig/merge_config.sh \ + -m -O $(objtree) $(srctree)/arch/$(ARCH)/configs/$(1) \ + $(foreach config,$(2),$(srctree)/arch/$(ARCH)/configs/$(config).config) + +$(Q)$(MAKE) -f $(srctree)/Makefile olddefconfig +endef + +PHONY += pseries_le_defconfig +pseries_le_defconfig: + $(call merge_into_defconfig,pseries_defconfig,le) + define archhelp @echo '* zImage - Build default images selected by kernel config' @echo ' zImage.* - Compressed kernel image (arch/$(ARCH)/boot/zImage.*)' @@ -314,7 +333,8 @@ TOUT := .tmp_gas_check # - Require gcc 4.0 or above on 64-bit # - gcc-4.2.0 has issues compiling modules on 64-bit checkbin: - @if test "$(cc-version)" = "0304" ; then \ + @if test "${COMPILER}" != "clang" \ + && test "$(cc-version)" = "0304" ; then \ if ! /bin/echo mftb 5 | $(AS) -v -mppc -many -o $(TOUT) >/dev/null 2>&1 ; then \ echo -n '*** ${VERSION}.${PATCHLEVEL} kernels no longer build '; \ echo 'correctly with gcc-3.4 and your version of binutils.'; \ @@ -322,13 +342,15 @@ checkbin: false; \ fi ; \ fi - @if test "$(cc-version)" -lt "0400" \ + @if test "${COMPILER}" != "clang" \ + && test "$(cc-version)" -lt "0400" \ && test "x${CONFIG_PPC64}" = "xy" ; then \ echo -n "Sorry, GCC v4.0 or above is required to build " ; \ echo "the 64-bit powerpc kernel." ; \ false ; \ fi - @if test "$(cc-fullversion)" = "040200" \ + @if test "${COMPILER}" != "clang" \ + && test "$(cc-fullversion)" = "040200" \ && test "x${CONFIG_MODULES}${CONFIG_PPC64}" = "xyy" ; then \ echo -n '*** GCC-4.2.0 cannot compile the 64-bit powerpc ' ; \ echo 'kernel with modules enabled.' ; \ @@ -336,6 +358,14 @@ checkbin: echo 'disable kernel modules' ; \ false ; \ fi + @if test "x${CONFIG_CPU_LITTLE_ENDIAN}" = "xy" \ + && $(LD) --version | head -1 | grep ' 2\.24$$' >/dev/null ; then \ + echo -n '*** binutils 2.24 miscompiles weak symbols ' ; \ + echo 'in some circumstances.' ; \ + echo -n '*** Please use a different binutils version.' ; \ + false ; \ + fi + CLEAN_FILES += $(TOUT) |