4f1933620f
The kbuild system takes advantage of an incorrect behavior in GNU make. Once this behavior is fixed, all files in the kernel rebuild every time, even if nothing has changed. This patch ensures kbuild works with both the incorrect and correct behaviors of GNU make. For more details on the incorrect behavior, see: http://lists.gnu.org/archive/html/bug-make/2006-03/msg00003.html Changes in this patch: - Keep all targets that are to be marked .PHONY in a variable, PHONY. - Add .PHONY: $(PHONY) to mark them properly. - Remove any $(PHONY) files from the $? list when determining whether targets are up-to-date or not. Signed-off-by: Paul Smith <psmith@gnu.org> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
195 lines
5.8 KiB
Makefile
195 lines
5.8 KiB
Makefile
# $Id: Makefile,v 1.35 2004/04/15 03:39:20 sugioka Exp $
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#
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# This file is subject to the terms and conditions of the GNU General Public
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# License. See the file "COPYING" in the main directory of this archive
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# for more details.
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#
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# Copyright (C) 1999 Kaz Kojima
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# Copyright (C) 2002, 2003, 2004 Paul Mundt
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# Copyright (C) 2002 M. R. Brown
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#
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# This file is included by the global makefile so that you can add your own
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# architecture-specific flags and dependencies. Remember to do have actions
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# for "archclean" and "archdep" for cleaning up and making dependencies for
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# this architecture
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#
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cflags-y := -mb
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cflags-$(CONFIG_CPU_LITTLE_ENDIAN) := -ml
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isa-y := any
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isa-$(CONFIG_CPU_SH2) := sh2
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isa-$(CONFIG_CPU_SH3) := sh3
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isa-$(CONFIG_CPU_SH4) := sh4
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isa-$(CONFIG_CPU_SH4A) := sh4a
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isa-$(CONFIG_CPU_SH2A) := sh2a
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isa-$(CONFIG_SH_DSP) := $(isa-y)-dsp
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ifndef CONFIG_MMU
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isa-y := $(isa-y)-nommu
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endif
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ifndef CONFIG_SH_FPU
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isa-y := $(isa-y)-nofpu
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endif
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cflags-y += $(call as-option,-Wa$(comma)-isa=$(isa-y),)
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cflags-$(CONFIG_CPU_SH2) += -m2
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cflags-$(CONFIG_CPU_SH3) += -m3
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cflags-$(CONFIG_CPU_SH4) += -m4 \
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$(call cc-option,-mno-implicit-fp,-m4-nofpu)
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cflags-$(CONFIG_CPU_SH4A) += $(call cc-option,-m4a-nofpu,)
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cflags-$(CONFIG_SH_DSP) += -Wa,-dsp
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cflags-$(CONFIG_SH_KGDB) += -g
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cflags-$(CONFIG_MORE_COMPILE_OPTIONS) += \
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$(shell echo $(CONFIG_COMPILE_OPTIONS) | sed -e 's/"//g')
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OBJCOPYFLAGS := -O binary -R .note -R .comment -R .stab -R .stabstr -S
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#
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# arch/sh/defconfig doesn't reflect any real hardware, and as such should
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# never be used by anyone. Use a board-specific defconfig that has a
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# reasonable chance of being current instead.
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#
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KBUILD_DEFCONFIG := rts7751r2d_defconfig
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#
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# Choosing incompatible machines durings configuration will result in
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# error messages during linking.
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#
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LDFLAGS_vmlinux += -e _stext
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ifdef CONFIG_CPU_LITTLE_ENDIAN
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LDFLAGS_vmlinux += --defsym 'jiffies=jiffies_64'
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LDFLAGS += -EL
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else
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LDFLAGS_vmlinux += --defsym 'jiffies=jiffies_64+4'
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LDFLAGS += -EB
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endif
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CFLAGS += -pipe $(cflags-y)
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AFLAGS += $(cflags-y)
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head-y := arch/sh/kernel/head.o arch/sh/kernel/init_task.o
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LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
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core-y += arch/sh/kernel/ arch/sh/mm/
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# Boards
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machdir-$(CONFIG_SH_SOLUTION_ENGINE) := se/770x
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machdir-$(CONFIG_SH_7751_SOLUTION_ENGINE) := se/7751
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machdir-$(CONFIG_SH_7300_SOLUTION_ENGINE) := se/7300
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machdir-$(CONFIG_SH_73180_SOLUTION_ENGINE) := se/73180
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machdir-$(CONFIG_SH_STB1_HARP) := harp
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machdir-$(CONFIG_SH_STB1_OVERDRIVE) := overdrive
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machdir-$(CONFIG_SH_HP6XX) := hp6xx
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machdir-$(CONFIG_SH_CQREEK) := cqreek
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machdir-$(CONFIG_SH_DMIDA) := dmida
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machdir-$(CONFIG_SH_EC3104) := ec3104
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machdir-$(CONFIG_SH_SATURN) := saturn
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machdir-$(CONFIG_SH_DREAMCAST) := dreamcast
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machdir-$(CONFIG_SH_CAT68701) := cat68701
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machdir-$(CONFIG_SH_BIGSUR) := bigsur
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machdir-$(CONFIG_SH_SH2000) := sh2000
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machdir-$(CONFIG_SH_ADX) := adx
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machdir-$(CONFIG_SH_MPC1211) := mpc1211
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machdir-$(CONFIG_SH_SH03) := sh03
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machdir-$(CONFIG_SH_SECUREEDGE5410) := snapgear
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machdir-$(CONFIG_SH_HS7751RVOIP) := renesas/hs7751rvoip
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machdir-$(CONFIG_SH_RTS7751R2D) := renesas/rts7751r2d
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machdir-$(CONFIG_SH_7751_SYSTEMH) := renesas/systemh
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machdir-$(CONFIG_SH_EDOSK7705) := renesas/edosk7705
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machdir-$(CONFIG_SH_SH4202_MICRODEV) := superh/microdev
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machdir-$(CONFIG_SH_UNKNOWN) := unknown
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incdir-y := $(notdir $(machdir-y))
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incdir-$(CONFIG_SH_SOLUTION_ENGINE) := se
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incdir-$(CONFIG_SH_7751_SOLUTION_ENGINE) := se7751
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incdir-$(CONFIG_SH_7300_SOLUTION_ENGINE) := se7300
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incdir-$(CONFIG_SH_73180_SOLUTION_ENGINE) := se73180
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incdir-$(CONFIG_SH_HP600) := hp6xx
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ifneq ($(machdir-y),)
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core-y += arch/sh/boards/$(machdir-y)/
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endif
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# Companion chips
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core-$(CONFIG_HD64461) += arch/sh/cchips/hd6446x/hd64461/
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core-$(CONFIG_HD64465) += arch/sh/cchips/hd6446x/hd64465/
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core-$(CONFIG_VOYAGERGX) += arch/sh/cchips/voyagergx/
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cpuincdir-$(CONFIG_CPU_SH2) := cpu-sh2
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cpuincdir-$(CONFIG_CPU_SH3) := cpu-sh3
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cpuincdir-$(CONFIG_CPU_SH4) := cpu-sh4
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libs-y := arch/sh/lib/ $(libs-y) $(LIBGCC)
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drivers-y += arch/sh/drivers/
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drivers-$(CONFIG_OPROFILE) += arch/sh/oprofile/
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boot := arch/sh/boot
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CPPFLAGS_vmlinux.lds := -traditional
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ifneq ($(KBUILD_SRC),)
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incdir-prefix := $(srctree)/include/asm-sh/
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else
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incdir-prefix :=
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endif
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# Update machine arch and proc symlinks if something which affects
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# them changed. We use .arch and .mach to indicate when they were
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# updated last, otherwise make uses the target directory mtime.
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include/asm-sh/.cpu: $(wildcard include/config/cpu/*.h) include/config/MARKER
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@echo ' SYMLINK include/asm-sh/cpu -> include/asm-sh/$(cpuincdir-y)'
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$(Q)if [ ! -d include/asm-sh ]; then mkdir -p include/asm-sh; fi
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$(Q)ln -fsn $(incdir-prefix)$(cpuincdir-y) include/asm-sh/cpu
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@touch $@
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# Most boards have their own mach directories. For the ones that
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# don't, just reference the parent directory so the semantics are
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# kept roughly the same.
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include/asm-sh/.mach: $(wildcard include/config/sh/*.h) include/config/MARKER
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@echo -n ' SYMLINK include/asm-sh/mach -> '
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$(Q)if [ ! -d include/asm-sh ]; then mkdir -p include/asm-sh; fi
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$(Q)if [ -d $(incdir-prefix)$(incdir-y) ]; then \
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echo -e 'include/asm-sh/$(incdir-y)'; \
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ln -fsn $(incdir-prefix)$(incdir-y) \
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include/asm-sh/mach; \
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else \
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echo -e 'include/asm-sh'; \
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ln -fsn $(incdir-prefix) include/asm-sh/mach; \
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fi
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@touch $@
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archprepare: maketools include/asm-sh/.cpu include/asm-sh/.mach
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PHONY += maketools FORCE
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maketools: include/linux/version.h FORCE
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$(Q)$(MAKE) $(build)=arch/sh/tools include/asm-sh/machtypes.h
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all: zImage
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zImage: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $(boot)/$@
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compressed: zImage
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archclean:
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$(Q)$(MAKE) $(clean)=$(boot)
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CLEAN_FILES += include/asm-sh/machtypes.h
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define archhelp
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@echo ' zImage - Compressed kernel image (arch/sh/boot/zImage)'
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endef
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