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5bb7826900
When introducing the generic asm-offsets.h support the dependency
chain for the prepare targets was changed. All build scripts expecting
include/asm/asm-offsets.h to be made when using the prepare target would broke.
With the limited number of prepare targets left in arch Makefiles
the trivial solution was to introduce a new arch specific target: archprepare
The dependency chain looks like this now:
prepare
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+--> prepare0
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+--> archprepare
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+--> scripts_basic
+--> prepare1
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+---> prepare2
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+--> prepare3
So prepare 3 is processed before prepare2 etc.
This guaantees that the asm symlink, version.h, scripts_basic
are all updated before archprepare is processed.
prepare0 which build the asm-offsets.h file will need the
actions performed by archprepare.
The head target is now named prepare, because users scripts will most
likely use that target, but prepare-all has been kept for compatibility.
Updated Documentation/kbuild/makefiles.txt.
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
99 lines
2.6 KiB
Makefile
99 lines
2.6 KiB
Makefile
#
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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) 2001 - 2005 Tensilica Inc.
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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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# Core configuration.
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# (Use CPU=<xtensa_config> to use another default compiler.)
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cpu-$(CONFIG_XTENSA_CPU_LINUX_BE) := linux_be
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cpu-$(CONFIG_XTENSA_CPU_LINUX_CUSTOM) := linux_custom
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CPU = $(cpu-y)
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export CPU
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# Platform configuration
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platform-$(CONFIG_XTENSA_PLATFORM_XT2000) := xt2000
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platform-$(CONFIG_XTENSA_PLATFORM_ISS) := iss
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PLATFORM = $(platform-y)
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export PLATFORM
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CPPFLAGS += $(if $(KBUILD_SRC),-I$(srctree)/include/asm-xtensa/)
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CPPFLAGS += -Iinclude/asm
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CFLAGS += -pipe -mlongcalls
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KBUILD_DEFCONFIG := iss_defconfig
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# ramdisk/initrd support
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# You need a compressed ramdisk image, named ramdisk.gz in
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# arch/xtensa/boot/ramdisk
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core-$(CONFIG_EMBEDDED_RAMDISK) += arch/xtensa/boot/ramdisk/
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# Test for cross compiling
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ifneq ($(CPU),)
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COMPILE_ARCH = $(shell uname -m)
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ifneq ($(COMPILE_ARCH), xtensa)
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ifndef CROSS_COMPILE
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CROSS_COMPILE = xtensa_$(CPU)-
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endif
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endif
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endif
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#
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LIBGCC := $(shell $(CC) $(CFLAGS) -print-libgcc-file-name)
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head-y := arch/xtensa/kernel/head.o
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core-y += arch/xtensa/kernel/ arch/xtensa/mm/
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ifneq ($(PLATFORM),)
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core-y += arch/xtensa/platform-$(PLATFORM)/
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endif
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libs-y += arch/xtensa/lib/ $(LIBGCC)
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boot := arch/xtensa/boot
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archinc := include/asm-xtensa
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archprepare: $(archinc)/.platform
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# Update machine cpu and platform symlinks if something which affects
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# them changed.
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$(archinc)/.platform: $(wildcard include/config/arch/*.h) include/config/MARKER
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@echo ' SYMLINK $(archinc)/xtensa/config -> $(archinc)/xtensa/config-$(CPU)'
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$(Q)mkdir -p $(archinc)
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$(Q)mkdir -p $(archinc)/xtensa
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$(Q)ln -fsn $(srctree)/$(archinc)/xtensa/config-$(CPU) $(archinc)/xtensa/config
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@echo ' SYMLINK $(archinc)/platform -> $(archinc)/platform-$(PLATFORM)'
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$(Q)ln -fsn $(srctree)/$(archinc)/platform-$(PLATFORM) $(archinc)/platform
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@touch $@
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all: zImage
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bzImage : zImage
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zImage zImage.initrd: vmlinux
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$(Q)$(MAKE) $(build)=$(boot) $@
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CLEAN_FILES += arch/xtensa/vmlinux.lds \
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$(archinc)/platform $(archinc)/xtensa/config \
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$(archinc)/.platform
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define archhelp
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@echo '* zImage - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
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endef
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