diff options
| author | Sam Ravnborg | 2007-10-14 22:21:35 +0200 |
|---|---|---|
| committer | Sam Ravnborg | 2007-10-14 22:21:35 +0200 |
| commit | a0f97e06a43cf524e616f09e6af3398e1e9c1c5b (patch) | |
| tree | 2503b24bdbc144aea9ea5bde6ead94b3406eaf98 /arch | |
| parent | 9a39e273d4df0560c724c5fe71f6314a0583ca2b (diff) | |
kbuild: enable 'make CFLAGS=...' to add additional options to CC
The variable CFLAGS is a wellknown variable and the usage by
kbuild may result in unexpected behaviour.
On top of that several people over time has asked for a way to
pass in additional flags to gcc.
This patch replace use of CFLAGS with KBUILD_CFLAGS all over the
tree and enabling one to use:
make CFLAGS=...
to specify additional gcc commandline options.
One usecase is when trying to find gcc bugs but other
use cases has been requested too.
Patch was tested on following architectures:
alpha, arm, i386, x86_64, mips, sparc, sparc64, ia64, m68k
Test was simple to do a defconfig build, apply the patch and check
that nothing got rebuild.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'arch')
41 files changed, 113 insertions, 115 deletions
diff --git a/arch/alpha/Makefile b/arch/alpha/Makefile index 1b704ee54bf3..2f283b2fb164 100644 --- a/arch/alpha/Makefile +++ b/arch/alpha/Makefile @@ -84,7 +84,7 @@ endif # For TSUNAMI, we must have the assembler not emulate our instructions. # The same is true for IRONGATE, POLARIS, PYXIS. # BWX is most important, but we don't really want any emulation ever. -CFLAGS += $(cflags-y) -Wa,-mev6 +KBUILD_CFLAGS += $(cflags-y) -Wa,-mev6 head-y := arch/alpha/kernel/head.o diff --git a/arch/alpha/kernel/Makefile b/arch/alpha/kernel/Makefile index ab6fa54b3860..dccf05245d4d 100644 --- a/arch/alpha/kernel/Makefile +++ b/arch/alpha/kernel/Makefile @@ -3,7 +3,7 @@ # extra-y := head.o vmlinux.lds -EXTRA_AFLAGS := $(CFLAGS) +EXTRA_AFLAGS := $(KBUILD_CFLAGS) EXTRA_CFLAGS := -Werror -Wno-sign-compare obj-y := entry.o traps.o process.o init_task.o osf_sys.o irq.o \ diff --git a/arch/alpha/lib/Makefile b/arch/alpha/lib/Makefile index 266f78e13076..9b72c59c95be 100644 --- a/arch/alpha/lib/Makefile +++ b/arch/alpha/lib/Makefile @@ -2,7 +2,7 @@ # Makefile for alpha-specific library files.. # -EXTRA_AFLAGS := $(CFLAGS) +EXTRA_AFLAGS := $(KBUILD_CFLAGS) EXTRA_CFLAGS := -Werror # Many of these routines have implementations tuned for ev6. diff --git a/arch/arm/Makefile b/arch/arm/Makefile index fa4ea9ff0797..0b82865ab506 100644 --- a/arch/arm/Makefile +++ b/arch/arm/Makefile @@ -14,9 +14,9 @@ LDFLAGS_vmlinux :=-p --no-undefined -X CPPFLAGS_vmlinux.lds = -DTEXT_OFFSET=$(TEXT_OFFSET) OBJCOPYFLAGS :=-O binary -R .note -R .comment -S GZFLAGS :=-9 -#CFLAGS +=-pipe +#KBUILD_CFLAGS +=-pipe # Explicitly specifiy 32-bit ARM ISA since toolchain default can be -mthumb: -CFLAGS +=$(call cc-option,-marm,) +KBUILD_CFLAGS +=$(call cc-option,-marm,) # Do not use arch/arm/defconfig - it's always outdated. # Select a platform tht is kept up-to-date @@ -28,7 +28,7 @@ MMUEXT := -nommu endif ifeq ($(CONFIG_FRAME_POINTER),y) -CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog +KBUILD_CFLAGS +=-fno-omit-frame-pointer -mapcs -mno-sched-prolog endif ifeq ($(CONFIG_CPU_BIG_ENDIAN),y) @@ -85,7 +85,7 @@ CFLAGS_ABI :=$(call cc-option,-mapcs-32,-mabi=apcs-gnu) $(call cc-option,-mno-th endif # Need -Uarm for gcc < 3.x -CFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm +KBUILD_CFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) $(call cc-option,-mshort-load-bytes,$(call cc-option,-malignment-traps,)) -msoft-float -Uarm AFLAGS +=$(CFLAGS_ABI) $(arch-y) $(tune-y) -msoft-float CHECKFLAGS += -D__arm__ diff --git a/arch/arm/boot/compressed/Makefile b/arch/arm/boot/compressed/Makefile index 6b8cbd69f249..5fde99f9d9f9 100644 --- a/arch/arm/boot/compressed/Makefile +++ b/arch/arm/boot/compressed/Makefile @@ -87,7 +87,7 @@ ifneq ($(PARAMS_PHYS),) LDFLAGS_vmlinux += --defsym params_phys=$(PARAMS_PHYS) endif LDFLAGS_vmlinux += -p --no-undefined -X \ - $(shell $(CC) $(CFLAGS) --print-libgcc-file-name) -T + $(shell $(CC) $(KBUILD_CFLAGS) --print-libgcc-file-name) -T # Don't allow any static data in misc.o, which # would otherwise mess up our GOT table diff --git a/arch/avr32/Makefile b/arch/avr32/Makefile index dc6bc01f232c..9883c8b55e1b 100644 --- a/arch/avr32/Makefile +++ b/arch/avr32/Makefile @@ -11,14 +11,14 @@ all: uImage vmlinux.elf KBUILD_DEFCONFIG := atstk1002_defconfig -CFLAGS += -pipe -fno-builtin -mno-pic +KBUILD_CFLAGS += -pipe -fno-builtin -mno-pic AFLAGS += -mrelax -mno-pic CFLAGS_MODULE += -mno-relax LDFLAGS_vmlinux += --relax cpuflags-$(CONFIG_CPU_AT32AP7000) += -mcpu=ap7000 -CFLAGS += $(cpuflags-y) +KBUILD_CFLAGS += $(cpuflags-y) AFLAGS += $(cpuflags-y) CHECKFLAGS += -D__avr32__ -D__BIG_ENDIAN diff --git a/arch/blackfin/Makefile b/arch/blackfin/Makefile index 20841663270f..52a6ac072851 100644 --- a/arch/blackfin/Makefile +++ b/arch/blackfin/Makefile @@ -53,7 +53,7 @@ rev-$(CONFIG_BF_REV_0_5) := 0.5 rev-$(CONFIG_BF_REV_NONE) := none rev-$(CONFIG_BF_REV_ANY) := any -CFLAGS += -mcpu=$(cpu-y)-$(rev-y) +KBUILD_CFLAGS += -mcpu=$(cpu-y)-$(rev-y) AFLAGS += -mcpu=$(cpu-y)-$(rev-y) head-y := arch/$(ARCH)/mach-$(MACHINE)/head.o arch/$(ARCH)/kernel/init_task.o diff --git a/arch/cris/Makefile b/arch/cris/Makefile index ee114699ef8e..32ef6f3cce06 100644 --- a/arch/cris/Makefile +++ b/arch/cris/Makefile @@ -31,16 +31,16 @@ OBJCOPYFLAGS := -O binary -R .note -R .comment -S CPPFLAGS_vmlinux.lds = -DDRAM_VIRTUAL_BASE=0x$(CONFIG_ETRAX_DRAM_VIRTUAL_BASE) AFLAGS += -mlinux -CFLAGS := $(CFLAGS) -mlinux -march=$(arch-y) -pipe +KBUILD_CFLAGS += -mlinux -march=$(arch-y) -pipe ifdef CONFIG_FRAME_POINTER -CFLAGS := $(subst -fomit-frame-pointer,,$(CFLAGS)) -g -CFLAGS += -fno-omit-frame-pointer +KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g +KBUILD_CFLAGS += -fno-omit-frame-pointer endif head-y := arch/$(ARCH)/$(SARCH)/kernel/head.o -LIBGCC = $(shell $(CC) $(CFLAGS) -print-file-name=libgcc.a) +LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-file-name=libgcc.a) core-y += arch/$(ARCH)/kernel/ arch/$(ARCH)/mm/ core-y += arch/$(ARCH)/$(SARCH)/kernel/ arch/$(ARCH)/$(SARCH)/mm/ diff --git a/arch/frv/Makefile b/arch/frv/Makefile index 9bf7345c5cc9..ec89886ed455 100644 --- a/arch/frv/Makefile +++ b/arch/frv/Makefile @@ -39,13 +39,13 @@ endif ARCHMODFLAGS += -G0 -mlong-calls ifdef CONFIG_GPREL_DATA_8 -CFLAGS += -G8 +KBUILD_CFLAGS += -G8 else ifdef CONFIG_GPREL_DATA_4 -CFLAGS += -G4 +KBUILD_CFLAGS += -G4 else ifdef CONFIG_GPREL_DATA_NONE -CFLAGS += -G0 +KBUILD_CFLAGS += -G0 endif endif endif @@ -53,25 +53,25 @@ endif #LDFLAGS_vmlinux := -Map linkmap.txt ifdef CONFIG_GC_SECTIONS -CFLAGS += -ffunction-sections -fdata-sections +KBUILD_CFLAGS += -ffunction-sections -fdata-sections LINKFLAGS += --gc-sections endif ifndef CONFIG_FRAME_POINTER -CFLAGS += -mno-linked-fp +KBUILD_CFLAGS += -mno-linked-fp endif ifdef CONFIG_CPU_FR451_COMPILE -CFLAGS += -mcpu=fr450 +KBUILD_CFLAGS += -mcpu=fr450 AFLAGS += -mcpu=fr450 ASFLAGS += -mcpu=fr450 else ifdef CONFIG_CPU_FR551_COMPILE -CFLAGS += -mcpu=fr550 +KBUILD_CFLAGS += -mcpu=fr550 AFLAGS += -mcpu=fr550 ASFLAGS += -mcpu=fr550 else -CFLAGS += -mcpu=fr400 +KBUILD_CFLAGS += -mcpu=fr400 AFLAGS += -mcpu=fr400 ASFLAGS += -mcpu=fr400 endif @@ -80,15 +80,15 @@ endif # pretend the kernel is going to run on an FR400 with no media-fp unit # - reserve CC3 for use with atomic ops # - all the extra registers are dealt with only at context switch time -CFLAGS += -mno-fdpic -mgpr-32 -msoft-float -mno-media -CFLAGS += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15 -ffixed-icc2 +KBUILD_CFLAGS += -mno-fdpic -mgpr-32 -msoft-float -mno-media +KBUILD_CFLAGS += -ffixed-fcc3 -ffixed-cc3 -ffixed-gr15 -ffixed-icc2 AFLAGS += -mno-fdpic ASFLAGS += -mno-fdpic # make sure the .S files get compiled with debug info # and disable optimisations that are unhelpful whilst debugging ifdef CONFIG_DEBUG_INFO -#CFLAGS += -O1 +#KBUILD_CFLAGS += -O1 AFLAGS += -Wa,--gdwarf2 ASFLAGS += -Wa,--gdwarf2 endif diff --git a/arch/h8300/Makefile b/arch/h8300/Makefile index 53b5c1edf596..330e05f28f90 100644 --- a/arch/h8300/Makefile +++ b/arch/h8300/Makefile @@ -30,16 +30,16 @@ ldflags-$(CONFIG_CPU_H8300H) := -mh8300helf cflags-$(CONFIG_CPU_H8S) := -ms ldflags-$(CONFIG_CPU_H8S) := -mh8300self -CFLAGS += $(cflags-y) -CFLAGS += -mint32 -fno-builtin -CFLAGS += -g -CFLAGS += -D__linux__ -CFLAGS += -DUTS_SYSNAME=\"uClinux\" +KBUILD_CFLAGS += $(cflags-y) +KBUILD_CFLAGS += -mint32 -fno-builtin +KBUILD_CFLAGS += -g +KBUILD_CFLAGS += -D__linux__ +KBUILD_CFLAGS += -DUTS_SYSNAME=\"uClinux\" AFLAGS += -DPLATFORM=$(PLATFORM) -DMODEL=$(MODEL) $(cflags-y) LDFLAGS += $(ldflags-y) CROSS_COMPILE = h8300-elf- -LIBGCC := $(shell $(CROSS-COMPILE)$(CC) $(CFLAGS) -print-libgcc-file-name) +LIBGCC := $(shell $(CROSS-COMPILE)$(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) head-y := arch/$(ARCH)/platform/$(PLATFORM)/$(BOARD)/crt0_$(MODEL).o diff --git a/arch/i386/Makefile b/arch/i386/Makefile index 5e50dbf00f3e..fc3c8e88b744 100644 --- a/arch/i386/Makefile +++ b/arch/i386/Makefile @@ -34,10 +34,10 @@ LDFLAGS_vmlinux := --emit-relocs endif CHECKFLAGS += -D__i386__ -CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return +KBUILD_CFLAGS += -pipe -msoft-float -mregparm=3 -freg-struct-return # prevent gcc from keeping the stack 16 byte aligned -CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2) +KBUILD_CFLAGS += $(call cc-option,-mpreferred-stack-boundary=2) # CPU-specific tuning. Anything which can be shared with UML should go here. include $(srctree)/arch/i386/Makefile.cpu @@ -51,7 +51,7 @@ cflags-y += -maccumulate-outgoing-args # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use # a lot more stack due to the lack of sharing of stacklots: -CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;) +KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then echo $(call cc-option,-fno-unit-at-a-time); fi ;) # do binutils support CFI? cflags-y += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_endproc,-DCONFIG_AS_CFI=1,) @@ -61,7 +61,7 @@ AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_rel_offset esp${comma}0\n.cfi_end cflags-y += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,) AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONFIG_AS_CFI_SIGNAL_FRAME=1,) -CFLAGS += $(cflags-y) +KBUILD_CFLAGS += $(cflags-y) # Default subarch .c files mcore-y := arch/x86/mach-default @@ -116,7 +116,7 @@ drivers-$(CONFIG_OPROFILE) += arch/x86/oprofile/ drivers-$(CONFIG_PM) += arch/x86/power/ drivers-$(CONFIG_FB) += arch/x86/video/ -CFLAGS += $(mflags-y) +KBUILD_CFLAGS += $(mflags-y) AFLAGS += $(mflags-y) boot := arch/x86/boot diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile index 21033ed83307..9708a29c70b5 100644 --- a/arch/ia64/Makefile +++ b/arch/ia64/Makefile @@ -44,7 +44,7 @@ ifeq ($(call cc-version),0304) cflags-$(CONFIG_MCKINLEY) += -mtune=mckinley endif -CFLAGS += $(cflags-y) +KBUILD_CFLAGS += $(cflags-y) head-y := arch/ia64/kernel/head.o arch/ia64/kernel/init_task.o libs-y += arch/ia64/lib/ diff --git a/arch/m32r/Makefile b/arch/m32r/Makefile index 60e12f312654..c80618ab60ea 100644 --- a/arch/m32r/Makefile +++ b/arch/m32r/Makefile @@ -9,7 +9,7 @@ LDFLAGS := OBJCOPYFLAGS := -O binary -R .note -R .comment -S LDFLAGS_vmlinux := -CFLAGS += -pipe -fno-schedule-insns +KBUILD_CFLAGS += -pipe -fno-schedule-insns CFLAGS_KERNEL += -mmodel=medium CFLAGS_MODULE += -mmodel=large @@ -24,14 +24,14 @@ endif cflags-$(CONFIG_ISA_M32R) += -DNO_FPU aflags-$(CONFIG_ISA_M32R) += -DNO_FPU -O2 -Wa,-no-bitinst -CFLAGS += $(cflags-y) +KBUILD_CFLAGS += $(cflags-y) AFLAGS += $(aflags-y) CHECKFLAGS += -D__m32r__ -D__BIG_ENDIAN__=1 head-y := arch/m32r/kernel/head.o arch/m32r/kernel/init_task.o -LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) libs-y += arch/m32r/lib/ $(LIBGCC) core-y += arch/m32r/kernel/ \ diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile index aa383a5ea7ac..4a1bd44ff162 100644 --- a/arch/m68k/Makefile +++ b/arch/m68k/Makefile @@ -32,18 +32,18 @@ endif CHECKFLAGS += -D__mc68000__ # without -fno-strength-reduce the 53c7xx.c driver fails ;-( -CFLAGS += -pipe -fno-strength-reduce -ffixed-a2 +KBUILD_CFLAGS += -pipe -fno-strength-reduce -ffixed-a2 # enable processor switch if compiled only for a single cpu ifndef CONFIG_M68020 ifndef CONFIG_M68030 ifndef CONFIG_M68060 -CFLAGS := $(CFLAGS) -m68040 +KBUILD_CFLAGS += -m68040 endif ifndef CONFIG_M68040 -CFLAGS := $(CFLAGS) -m68060 +KBUILD_CFLAGS += -m68060 endif endif @@ -52,7 +52,7 @@ endif ifdef CONFIG_KGDB # If configured for kgdb support, include debugging infos and keep the # frame pointer -CFLAGS := $(subst -fomit-frame-pointer,,$(CFLAGS)) -g +KBUILD_CFLAGS := $(subst -fomit-frame-pointer,,$(KBUILD_CFLAGS)) -g endif ifndef CONFIG_SUN3 diff --git a/arch/m68knommu/Makefile b/arch/m68knommu/Makefile index 1305cc980023..1c1fbb69ff26 100644 --- a/arch/m68knommu/Makefile +++ b/arch/m68knommu/Makefile @@ -104,9 +104,9 @@ cflags-$(CONFIG_M68360) := -m68332 AFLAGS += $(cflags-y) -CFLAGS += $(cflags-y) -CFLAGS += -D__linux__ -CFLAGS += -DUTS_SYSNAME=\"uClinux\" +KBUILD_CFLAGS += $(cflags-y) +KBUILD_CFLAGS += -D__linux__ +KBUILD_CFLAGS += -DUTS_SYSNAME=\"uClinux\" head-y := arch/m68knommu/platform/$(cpuclass-y)/head.o diff --git a/arch/mips/Makefile b/arch/mips/Makefile index ebd5d02a7d78..64512abef61d 100644 --- a/arch/mips/Makefile +++ b/arch/mips/Makefile @@ -609,13 +609,13 @@ ifdef CONFIG_64BIT endif AFLAGS += $(cflags-y) -CFLAGS += $(cflags-y) \ +KBUILD_CFLAGS += $(cflags-y) \ -D"VMLINUX_LOAD_ADDRESS=$(load-y)" LDFLAGS += -m $(ld-emul) ifdef CONFIG_MIPS -CHECKFLAGS += $(shell $(CC) $(CFLAGS) -dM -E -xc /dev/null | \ +CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \ egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \ sed -e 's/^\#define /-D/' -e "s/ /='/" -e "s/$$/'/") ifdef CONFIG_64BIT @@ -632,7 +632,7 @@ OBJCOPYFLAGS += --remove-section=.reginfo # CPPFLAGS_vmlinux.lds := \ - $(CFLAGS) \ + $(KBUILD_CFLAGS) \ -D"LOADADDR=$(load-y)" \ -D"JIFFIES=$(JIFFIES)" \ -D"DATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)" diff --git a/arch/mips/kernel/Makefile b/arch/mips/kernel/Makefile index a2689f93c160..95a356ef3910 100644 --- a/arch/mips/kernel/Makefile +++ b/arch/mips/kernel/Makefile @@ -71,7 +71,7 @@ obj-$(CONFIG_PCSPEAKER) += pcspeaker.o obj-$(CONFIG_KEXEC) += machine_kexec.o relocate_kernel.o obj-$(CONFIG_EARLY_PRINTK) += early_printk.o -CFLAGS_cpu-bugs64.o = $(shell if $(CC) $(CFLAGS) -Wa,-mdaddi -c -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi) +CFLAGS_cpu-bugs64.o = $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi) obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT) += 8250-platform.o diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index 760567a9ba16..f3d0d7c70977 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -63,7 +63,7 @@ cflags-$(CONFIG_PA8X00) += -march=2.0 -mschedule=8000 head-y := arch/parisc/kernel/head.o -CFLAGS += $(cflags-y) +KBUILD_CFLAGS += $(cflags-y) kernel-y := mm/ kernel/ math-emu/ kernel/init_task.o kernel-$(CONFIG_HPUX) += hpux/ diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile index 643839a3f5d8..51309848c11d 100644 --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -77,8 +77,8 @@ CFLAGS-$(CONFIG_PPC64) := -mminimal-toc -mtraceback=none -mcall-aixdesc CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple CPPFLAGS += $(CPPFLAGS-y) AFLAGS += $(AFLAGS-y) -CFLAGS += -msoft-float -pipe $(CFLAGS-y) -CPP = $(CC) -E $(CFLAGS) +KBUILD_CFLAGS += -msoft-float -pipe $(CFLAGS-y) +CPP = $(CC) -E $(KBUILD_CFLAGS) CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__ @@ -88,35 +88,35 @@ GCC_BROKEN_VEC := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi ifeq ($(CONFIG_POWER4_ONLY),y) ifeq ($(CONFIG_ALTIVEC),y) ifeq ($(GCC_BROKEN_VEC),y) - CFLAGS += $(call cc-option,-mcpu=970) + KBUILD_CFLAGS += $(call cc-option,-mcpu=970) else - CFLAGS += $(call cc-option,-mcpu=power4) + KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) endif else - CFLAGS += $(call cc-option,-mcpu=power4) + KBUILD_CFLAGS += $(call cc-option,-mcpu=power4) endif else - CFLAGS += $(call cc-option,-mtune=power4) + KBUILD_CFLAGS += $(call cc-option,-mtune=power4) endif endif ifeq ($(CONFIG_TUNE_CELL),y) - CFLAGS += $(call cc-option,-mtune=cell) + KBUILD_CFLAGS += $(call cc-option,-mtune=cell) endif # No AltiVec instruction when building kernel -CFLAGS += $(call cc-option,-mno-altivec) +KBUILD_CFLAGS += $(call cc-option,-mno-altivec) # Enable unit-at-a-time mode when possible. It shrinks the # kernel considerably. -CFLAGS += $(call cc-option,-funit-at-a-time) +KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) # Never use string load/store instructions as they are # often slow when they are implemented at all -CFLAGS += -mno-string +KBUILD_CFLAGS += -mno-string ifeq ($(CONFIG_6xx),y) -CFLAGS += -mcpu=powerpc +KBUILD_CFLAGS += -mcpu=powerpc endif cpu-as-$(CONFIG_4xx) += -Wa,-m405 @@ -126,7 +126,7 @@ cpu-as-$(CONFIG_E500) += -Wa,-me500 cpu-as-$(CONFIG_E200) += -Wa,-me200 AFLAGS += $(cpu-as-y) -CFLAGS += $(cpu-as-y) +KBUILD_CFLAGS += $(cpu-as-y) head-y := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o head-$(CONFIG_8xx) := arch/powerpc/kernel/head_8xx.o diff --git a/arch/ppc/Makefile b/arch/ppc/Makefile index eee6264e8a04..43802e95c892 100644 --- a/arch/ppc/Makefile +++ b/arch/ppc/Makefile @@ -24,20 +24,20 @@ LDFLAGS_vmlinux := -Ttext $(KERNELLOAD) -Bstatic # The -Iarch/$(ARCH)/include is temporary while we are merging CPPFLAGS += -Iarch/$(ARCH) -Iarch/$(ARCH)/include AFLAGS += -Iarch/$(ARCH) -CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe \ +KBUILD_CFLAGS += -Iarch/$(ARCH) -msoft-float -pipe \ -ffixed-r2 -mmultiple # No AltiVec instruction when building kernel -CFLAGS += $(call cc-option, -mno-altivec) +KBUILD_CFLAGS += $(call cc-option, -mno-altivec) -CPP = $(CC) -E $(CFLAGS) +CPP = $(CC) -E $(KBUILD_CFLAGS) # Temporary hack until we have migrated to asm-powerpc LINUXINCLUDE += -Iarch/$(ARCH)/include CHECKFLAGS += -D__powerpc__ ifndef CONFIG_FSL_BOOKE -CFLAGS += -mstring +KBUILD_CFLAGS += -mstring endif cpu-as-$(CONFIG_4xx) += -Wa,-m405 @@ -46,7 +46,7 @@ cpu-as-$(CONFIG_E500) += -Wa,-me500 cpu-as-$(CONFIG_E200) += -Wa,-me200 AFLAGS += $(cpu-as-y) -CFLAGS += $(cpu-as-y) +KBUILD_CFLAGS += $(cpu-as-y) # Default to the common case. KBUILD_DEFCONFIG := common_defconfig diff --git a/arch/s390/Makefile b/arch/s390/Makefile index 143ed8e154af..62a0da42c7fd 100644 --- a/arch/s390/Makefile +++ b/arch/s390/Makefile @@ -15,7 +15,7 @@ ifndef CONFIG_64BIT LDFLAGS := -m elf_s390 -CFLAGS += -m31 +KBUILD_CFLAGS += -m31 AFLAGS += -m31 UTS_MACHINE := s390 STACK_SIZE := 8192 @@ -23,7 +23,7 @@ CHECKFLAGS += -D__s390__ -msize-long else LDFLAGS := -m elf64_s390 MODFLAGS += -fpic -D__PIC__ -CFLAGS += -m64 +KBUILD_CFLAGS += -m64 AFLAGS += -m64 UTS_MACHINE := s390x STACK_SIZE := 16384 @@ -77,8 +77,8 @@ cflags-$(CONFIG_WARN_STACK) += -mwarn-dynamicstack cflags-$(CONFIG_WARN_STACK) += -mwarn-framesize=$(CONFIG_WARN_STACK_SIZE) endif -CFLAGS += -mbackchain -msoft-float $(cflags-y) -CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare +KBUILD_CFLAGS += -mbackchain -msoft-float $(cflags-y) +KBUILD_CFLAGS += -pipe -fno-strength-reduce -Wno-sign-compare AFLAGS += $(aflags-y) OBJCOPYFLAGS := -O binary diff --git a/arch/sh/Makefile b/arch/sh/Makefile index 97ac58682d0f..cd8a411acc95 100644 --- a/arch/sh/Makefile +++ b/arch/sh/Makefile @@ -91,12 +91,12 @@ LDFLAGS_vmlinux += --defsym 'jiffies=jiffies_64+4' LDFLAGS += -EB endif -CFLAGS += -pipe $(cflags-y) +KBUILD_CFLAGS += -pipe $(cflags-y) AFLAGS += $(cflags-y) head-y := arch/sh/kernel/head.o arch/sh/kernel/init_task.o -LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) core-y += arch/sh/kernel/ arch/sh/mm/ core-$(CONFIG_SH_FPU_EMU) += arch/sh/math-emu/ diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile index 013504ae1122..906a13f82fe0 100644 --- a/arch/sh/boot/compressed/Makefile +++ b/arch/sh/boot/compressed/Makefile @@ -21,7 +21,7 @@ IMAGE_OFFSET := $(shell /bin/bash -c 'printf "0x%08x" \ $(CONFIG_MEMORY_START) + \ $(CONFIG_BOOT_LINK_OFFSET)]') -LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup -T $(obj)/../../kernel/vmlinux.lds diff --git a/arch/sh64/Makefile b/arch/sh64/Makefile index ebf20043991c..9e874de0a096 100644 --- a/arch/sh64/Makefile +++ b/arch/sh64/Makefile @@ -26,7 +26,7 @@ LDFLAGS += -EB -mshelf32_linux endif # No requirements for endianess support from AFLAGS, 'as' always run through gcc -CFLAGS += $(cpu-y) +KBUILD_CFLAGS += $(cpu-y) LDFLAGS_vmlinux += --defsym phys_stext=_stext-$(CONFIG_CACHED_MEMORY_OFFSET) \ --defsym phys_stext_shmedia=phys_stext+1 \ @@ -57,7 +57,7 @@ ifneq ($(machine-y),) core-y += arch/sh64/mach-$(machine-y)/ endif -LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) libs-y += arch/$(ARCH)/lib/ $(LIBGCC) drivers-$(CONFIG_OPROFILE) += arch/sh64/oprofile/ diff --git a/arch/sparc/Makefile b/arch/sparc/Makefile index f33c3817f014..2ce781a7cbf0 100644 --- a/arch/sparc/Makefile +++ b/arch/sparc/Makefile @@ -8,15 +8,15 @@ # # -# Uncomment the first CFLAGS if you are doing kgdb source level +# Uncomment the first KBUILD_CFLAGS if you are doing kgdb source level # debugging of the kernel to get the proper debugging information. AS := $(AS) -32 LDFLAGS := -m elf32_sparc CHECKFLAGS += -D__sparc__ -#CFLAGS := $(CFLAGS) -g -pipe -fcall-used-g5 -fcall-used-g7 -CFLAGS := $(CFLAGS) -m32 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7 +#KBUILD_CFLAGS += -g -pipe -fcall-used-g5 -fcall-used-g7 +KBUILD_CFLAGS += -m32 -pipe -mno-fpu -fcall-used-g5 -fcall-used-g7 AFLAGS := $(AFLAGS) -m32 #LDFLAGS_vmlinux = -N -Ttext 0xf0004000 diff --git a/arch/sparc64/Makefile b/arch/sparc64/Makefile index cad10c5b83d3..b083dc458ce9 100644 --- a/arch/sparc64/Makefile +++ b/arch/sparc64/Makefile @@ -39,17 +39,17 @@ AS := $(AS) --undeclared-regs endif ifneq ($(NEW_GCC),y) - CFLAGS := $(CFLAGS) -pipe -mno-fpu -mtune=ultrasparc -mmedlow \ + KBUILD_CFLAGS += -pipe -mno-fpu -mtune=ultrasparc -mmedlow \ -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare else - CFLAGS := $(CFLAGS) -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow \ + KBUILD_CFLAGS += -m64 -pipe -mno-fpu -mcpu=ultrasparc -mcmodel=medlow \ -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wno-sign-compare \ $(CC_UNDECL) AFLAGS += -m64 -mcpu=ultrasparc $(CC_UNDECL) endif ifeq ($(CONFIG_MCOUNT),y) - CFLAGS := $(CFLAGS) -pg + KBUILD_CFLAGS += -pg endif head-y := arch/sparc64/kernel/head.o arch/sparc64/kernel/init_task.o diff --git a/arch/um/Makefile b/arch/um/Makefile index 989224f21346..18123bf7b649 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -58,14 +58,14 @@ SYS_DIR := $(ARCH_DIR)/include/sysdep-$(SUBARCH) # # These apply to USER_CFLAGS to. -CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ +KBUILD_CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \ $(ARCH_INCLUDE) $(MODE_INCLUDE) -Dvmap=kernel_vmap \ -Din6addr_loopback=kernel_in6addr_loopback AFLAGS += $(ARCH_INCLUDE) USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -D__KERNEL__,,\ - $(patsubst -I%,,$(CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \ + $(patsubst -I%,,$(KBUILD_CFLAGS)))) $(ARCH_INCLUDE) $(MODE_INCLUDE) \ -D_FILE_OFFSET_BITS=64 include $(srctree)/$(ARCH_DIR)/Makefile-$(SUBARCH) @@ -75,14 +75,14 @@ include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS) # -Derrno=kernel_errno - This turns all kernel references to errno into # kernel_errno to separate them from the libc errno. This allows -fno-common -# in CFLAGS. Otherwise, it would cause ld to complain about the two different +# in KBUILD_CFLAGS. Otherwise, it would cause ld to complain about the two different # errnos. # These apply to kernelspace only. KERNEL_DEFINES = -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \ -Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES) -CFLAGS += $(KERNEL_DEFINES) -CFLAGS += $(call cc-option,-fno-unit-at-a-time,) +KBUILD_CFLAGS += $(KERNEL_DEFINES) +KBUILD_CFLAGS += $(call cc-option,-fno-unit-at-a-time,) # These are needed for clean and mrproper, since in that case .config is not # included; the values here are meaningless diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386 index c9f1c5b24c9a..26bc786fc614 100644 --- a/arch/um/Makefile-i386 +++ b/arch/um/Makefile-i386 @@ -15,7 +15,7 @@ OBJCOPYFLAGS := -O binary -R .note -R .comment -S ifeq ("$(origin SUBARCH)", "command line") ifneq ("$(shell uname -m | sed -e s/i.86/i386/)", "$(SUBARCH)") -CFLAGS += $(call cc-option,-m32) +KBUILD_CFLAGS += $(call cc-option,-m32) AFLAGS += $(call cc-option,-m32) LINK-y += $(call cc-option,-m32) UML_OBJCOPYFLAGS += -F $(ELF_FORMAT) @@ -36,4 +36,4 @@ cflags-y += $(call cc-option,-mpreferred-stack-boundary=2) # an unresolved reference. cflags-y += -ffreestanding -CFLAGS += $(cflags-y) +KBUILD_CFLAGS += $(cflags-y) diff --git a/arch/um/Makefile-os-Linux b/arch/um/Makefile-os-Linux index 0c0f9a1cbbad..52859487c95d 100644 --- a/arch/um/Makefile-os-Linux +++ b/arch/um/Makefile-os-Linux @@ -5,4 +5,4 @@ # To get a definition of F_SETSIG USER_CFLAGS += -D_GNU_SOURCE -D_LARGEFILE64_SOURCE -CFLAGS += -D_LARGEFILE64_SOURCE +KBUILD_CFLAGS += -D_LARGEFILE64_SOURCE diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64 index 69ecea63fdae..36d2bb5e4192 100644 --- a/arch/um/Makefile-x86_64 +++ b/arch/um/Makefile-x86_64 @@ -9,7 +9,7 @@ _extra_flags_ = -fno-builtin -m64 #We #undef __x86_64__ for kernelspace, not for userspace where #it's needed for headers to work! ARCH_KERNEL_DEFINES = -U__$(SUBARCH)__ -CFLAGS += $(_extra_flags_) +KBUILD_CFLAGS += $(_extra_flags_) CHECKFLAGS += -m64 AFLAGS += -m64 diff --git a/arch/um/drivers/Makefile b/arch/um/drivers/Makefile index de17d4c6e02d..0f780dd0d4c4 100644 --- a/arch/um/drivers/Makefile +++ b/arch/um/drivers/Makefile @@ -17,7 +17,7 @@ ubd-objs := ubd_kern.o ubd_user.o port-objs := port_kern.o port_user.o harddog-objs := harddog_kern.o harddog_user.o -LDFLAGS_pcap.o := -r $(shell $(CC) $(CFLAGS) -print-file-name=libpcap.a) +LDFLAGS_pcap.o := -r $(shell $(CC) $(KBUILD_CFLAGS) -print-file-name=libpcap.a) targets := pcap_kern.o pcap_user.o diff --git a/arch/um/sys-i386/Makefile b/arch/um/sys-i386/Makefile index d6b3ecd4b77e..8909b07d9ee7 100644 --- a/arch/um/sys-i386/Makefile +++ b/arch/um/sys-i386/Makefile @@ -20,4 +20,4 @@ CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING) include arch/um/scripts/Makefile.rules -$(obj)/unmap.%: _c_flags = $(call unprofile,$(CFLAGS)) +$(obj)/unmap.%: _c_flags = $(call unprofile,$(KBUILD_CFLAGS)) diff --git a/arch/um/sys-x86_64/Makefile b/arch/um/sys-x86_64/Makefile index 4d9e5efa6fb9..e446a9916fd7 100644 --- a/arch/um/sys-x86_64/Makefile +++ b/arch/um/sys-x86_64/Makefile @@ -28,4 +28,4 @@ CFLAGS_stub_segv.o := $(CFLAGS_NO_HARDENING) include arch/um/scripts/Makefile.rules -$(obj)/unmap.%: _c_flags = $(call unprofile,$(CFLAGS)) +$(obj)/unmap.%: _c_flags = $(call unprofile,$(KBUILD_CFLAGS)) diff --git a/arch/v850/Makefile b/arch/v850/Makefile index 8be9aacb20a7..8b629df0029a 100644 --- a/arch/v850/Makefile +++ b/arch/v850/Makefile @@ -16,11 +16,11 @@ arch_dir = arch/v850 -CFLAGS += -mv850e +KBUILD_CFLAGS += -mv850e # r16 is a fixed pointer to the current task -CFLAGS += -ffixed-r16 -mno-prolog-function -CFLAGS += -fno-builtin -CFLAGS += -D__linux__ -DUTS_SYSNAME=\"uClinux\" +KBUILD_CFLAGS += -ffixed-r16 -mno-prolog-function +KBUILD_CFLAGS += -fno-builtin +KBUILD_CFLAGS += -D__linux__ -DUTS_SYSNAME=\"uClinux\" # By default, build a kernel that runs on the gdb v850 simulator. KBUILD_DEFCONFIG := sim_defconfig diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile index cb1035f2b7e9..646292aaf1fc 100644 --- a/arch/x86/boot/Makefile +++ b/arch/x86/boot/Makefile @@ -50,7 +50,7 @@ HOSTCFLAGS_build.o := $(LINUXINCLUDE) # that way we can complain to the user if the CPU is insufficient. cflags-i386 := cflags-x86_64 := -m32 -CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ +KBUILD_CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ $(cflags-$(ARCH)) \ -Wall -Wstrict-prototypes \ -march=i386 -mregparm=3 \ @@ -61,7 +61,7 @@ CFLAGS := $(LINUXINCLUDE) -g -Os -D_SETUP -D__KERNEL__ \ $(call cc-option, -fno-unit-at-a-time)) \ $(call cc-option, -fno-stack-protector) \ $(call cc-option, -mpreferred-stack-boundary=2) -AFLAGS := $(CFLAGS) -D__ASSEMBLY__ +AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ $(obj)/zImage: IMAGE_OFFSET := 0x1000 $(obj)/zImage: EXTRA_AFLAGS := $(SVGA_MODE) $(RAMDISK) diff --git a/arch/x86/boot/compressed/Makefile_32 b/arch/x86/boot/compressed/Makefile_32 index 22613c652d22..e43ff7c56e6e 100644 --- a/arch/x86/boot/compressed/Makefile_32 +++ b/arch/x86/boot/compressed/Makefile_32 @@ -11,7 +11,7 @@ EXTRA_AFLAGS := -traditional LDFLAGS_vmlinux := -T hostprogs-y := relocs -CFLAGS := -m32 -D__KERNEL__ $(LINUX_INCLUDE) -O2 \ +KBUILD_CFLAGS := -m32 -D__KERNEL__ $(LINUX_INCLUDE) -O2 \ -fno-strict-aliasing -fPIC \ $(call cc-option,-ffreestanding) \ $(call cc-option,-fno-stack-protector) diff --git a/arch/x86/boot/compressed/Makefile_64 b/arch/x86/boot/compressed/Makefile_64 index dc6b3380cc45..3013ad01fe69 100644 --- a/arch/x86/boot/compressed/Makefile_64 +++ b/arch/x86/boot/compressed/Makefile_64 @@ -6,11 +6,11 @@ targets := vmlinux vmlinux.bin vmlinux.bin.gz head_64.o misc_64.o piggy.o -CFLAGS := -m64 -D__KERNEL__ $(LINUXINCLUDE) -O2 \ +KBUILD_CFLAGS := -m64 -D__KERNEL__ $(LINUXINCLUDE) -O2 \ -fno-strict-aliasing -fPIC -mcmodel=small \ $(call cc-option, -ffreestanding) \ $(call cc-option, -fno-stack-protector) -AFLAGS := $(CFLAGS) -D__ASSEMBLY__ +AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ LDFLAGS := -m elf_x86_64 LDFLAGS_vmlinux := -T diff --git a/arch/x86/vdso/Makefile b/arch/x86/vdso/Makefile index 8d03de029d9b..dcd6bb9e0bb3 100644 --- a/arch/x86/vdso/Makefile +++ b/arch/x86/vdso/Makefile @@ -34,8 +34,8 @@ $(obj)/vdso.so: $(src)/vdso.lds $(vobjs) FORCE CFL := $(PROFILING) -mcmodel=small -fPIC -g0 -O2 -fasynchronous-unwind-tables -m64 -$(obj)/vclock_gettime.o: CFLAGS = $(CFL) -$(obj)/vgetcpu.o: CFLAGS = $(CFL) +$(obj)/vclock_gettime.o: KBUILD_CFLAGS = $(CFL) +$(obj)/vgetcpu.o: KBUILD_CFLAGS = $(CFL) # We also create a special relocatable object that should mirror the symbol # table and layout of the linked DSO. With ld -R we can then refer to diff --git a/arch/x86_64/Makefile b/arch/x86_64/Makefile index 8bffb94c71b5..3fc33004e8c6 100644 --- a/arch/x86_64/Makefile +++ b/arch/x86_64/Makefile @@ -70,7 +70,7 @@ AFLAGS += $(call as-instr,.cfi_startproc\n.cfi_signal_frame\n.cfi_endproc,-DCONF cflags-$(CONFIG_CC_STACKPROTECTOR) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector ) cflags-$(CONFIG_CC_STACKPROTECTOR_ALL) += $(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-x86_64-has-stack-protector.sh "$(CC)" -fstack-protector-all ) -CFLAGS += $(cflags-y) +KBUILD_CFLAGS += $(cflags-y) CFLAGS_KERNEL += $(cflags-kernel-y) AFLAGS += -m64 diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile index acf05be24929..56685a883347 100644 --- a/arch/xtensa/Makefile +++ b/arch/xtensa/Makefile @@ -28,11 +28,9 @@ PLATFORM = $(platform-y) export PLATFORM # temporarily until string.h is fixed -cflags-y += -ffreestanding +KBUILD_CFLAGS += -ffreestanding -cflags-y += -pipe -mlongcalls - -CFLAGS += $(cflags-y) +KBUILD_CFLAGS += -pipe -mlongcalls KBUILD_DEFCONFIG := iss_defconfig @@ -56,7 +54,7 @@ endif # -LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) head-y := arch/xtensa/kernel/head.o core-y += arch/xtensa/kernel/ arch/xtensa/mm/ diff --git a/arch/xtensa/boot/boot-redboot/Makefile b/arch/xtensa/boot/boot-redboot/Makefile index f53262c2e1f3..74d15d08077b 100644 --- a/arch/xtensa/boot/boot-redboot/Makefile +++ b/arch/xtensa/boot/boot-redboot/Makefile @@ -19,7 +19,7 @@ boot-y := bootstrap.o OBJS := $(addprefix $(obj)/,$(boot-y)) LIBS := arch/xtensa/boot/lib/lib.a arch/xtensa/lib/lib.a -LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name) +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) zImage: vmlinux $(OBJS) $(LIBS) $(OBJCOPY) --strip-all -R .comment -R .xt.insn -O binary \ |