82977af93a
'export suffix-y' does not work reliably because hyphens are disallowed
in shell variables.
A similar issue was fixed by commit 2bfbe7881e ("kbuild: Do not use
hyphen in exported variable name").
If I do similar in dash, ARCH=sh fails to build.
$ mv linux linux~
$ cd linux~
$ dash
$ make O=foo/bar ARCH=sh CROSS_COMPILE=sh4-linux-gnu- defconfig all
make[1]: Entering directory '/home/masahiro/linux~/foo/bar'
[ snip ]
make[4]: *** No rule to make target 'arch/sh/boot/compressed/vmlinux.bin.', needed by 'arch/sh/boot/compressed/piggy.o'. Stop.
make[3]: *** [/home/masahiro/linux~/arch/sh/boot/Makefile:40: arch/sh/boot/compressed/vmlinux] Error 2
make[2]: *** [/home/masahiro/linux~/arch/sh/Makefile:194: zImage] Error 2
make[1]: *** [/home/masahiro/linux~/Makefile:350: __build_one_by_one] Error 2
make[1]: Leaving directory '/home/masahiro/linux~/foo/bar'
make: *** [Makefile:219: __sub-make] Error 2
The maintainer of GNU Make stated that there is no consistent way to
export variables that do not meet the shell's naming criteria.
(https://savannah.gnu.org/bugs/?55719)
Consequently, you cannot use hyphens in exported variables.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicolas Schier <n.schier@avm.de>
116 lines
3.3 KiB
Makefile
116 lines
3.3 KiB
Makefile
#
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# arch/sh/boot/Makefile
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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 Stuart Menefy
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#
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#
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# Assign safe dummy values if these variables are not defined,
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# in order to suppress error message.
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#
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CONFIG_PAGE_OFFSET ?= 0x80000000
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CONFIG_MEMORY_START ?= 0x0c000000
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CONFIG_BOOT_LINK_OFFSET ?= 0x00800000
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CONFIG_ZERO_PAGE_OFFSET ?= 0x00001000
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CONFIG_ENTRY_OFFSET ?= 0x00001000
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CONFIG_PHYSICAL_START ?= $(CONFIG_MEMORY_START)
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suffix_y := bin
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suffix_$(CONFIG_KERNEL_GZIP) := gz
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suffix_$(CONFIG_KERNEL_BZIP2) := bz2
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suffix_$(CONFIG_KERNEL_LZMA) := lzma
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suffix_$(CONFIG_KERNEL_XZ) := xz
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suffix_$(CONFIG_KERNEL_LZO) := lzo
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targets := zImage vmlinux.srec romImage uImage uImage.srec uImage.gz \
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uImage.bz2 uImage.lzma uImage.xz uImage.lzo uImage.bin \
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vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
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vmlinux.bin.xz vmlinux.bin.lzo
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subdir- := compressed romimage
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$(obj)/zImage: $(obj)/compressed/vmlinux FORCE
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$(call if_changed,objcopy)
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@echo ' Kernel: $@ is ready'
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$(obj)/compressed/vmlinux: FORCE
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$(Q)$(MAKE) $(build)=$(obj)/compressed $@
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$(obj)/romImage: $(obj)/romimage/vmlinux FORCE
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$(call if_changed,objcopy)
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@echo ' Kernel: $@ is ready'
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$(obj)/romimage/vmlinux: $(obj)/zImage FORCE
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$(Q)$(MAKE) $(build)=$(obj)/romimage $@
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KERNEL_MEMORY := $(shell /bin/bash -c 'printf "0x%08x" \
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$$[$(CONFIG_PHYSICAL_START) & 0x1fffffff]')
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KERNEL_LOAD := $(shell /bin/bash -c 'printf "0x%08x" \
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$$[$(CONFIG_PAGE_OFFSET) + \
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$(KERNEL_MEMORY) + \
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$(CONFIG_ZERO_PAGE_OFFSET)]')
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KERNEL_ENTRY := $(shell /bin/bash -c 'printf "0x%08x" \
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$$[$(CONFIG_PAGE_OFFSET) + \
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$(KERNEL_MEMORY) + \
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$(CONFIG_ZERO_PAGE_OFFSET) + $(CONFIG_ENTRY_OFFSET)]')
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UIMAGE_LOADADDR = $(KERNEL_LOAD)
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UIMAGE_ENTRYADDR = $(KERNEL_ENTRY)
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$(obj)/vmlinux.bin: vmlinux FORCE
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$(call if_changed,objcopy)
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$(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
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$(call if_changed,gzip)
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$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
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$(call if_changed,bzip2)
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$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
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$(call if_changed,lzma)
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$(obj)/vmlinux.bin.xz: $(obj)/vmlinux.bin FORCE
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$(call if_changed,xzkern)
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$(obj)/vmlinux.bin.lzo: $(obj)/vmlinux.bin FORCE
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$(call if_changed,lzo)
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$(obj)/uImage.bz2: $(obj)/vmlinux.bin.bz2 FORCE
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$(call if_changed,uimage,bzip2)
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$(obj)/uImage.gz: $(obj)/vmlinux.bin.gz FORCE
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$(call if_changed,uimage,gzip)
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$(obj)/uImage.lzma: $(obj)/vmlinux.bin.lzma FORCE
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$(call if_changed,uimage,lzma)
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$(obj)/uImage.xz: $(obj)/vmlinux.bin.xz FORCE
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$(call if_changed,uimage,xz)
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$(obj)/uImage.lzo: $(obj)/vmlinux.bin.lzo FORCE
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$(call if_changed,uimage,lzo)
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$(obj)/uImage.bin: $(obj)/vmlinux.bin FORCE
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$(call if_changed,uimage,none)
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OBJCOPYFLAGS_vmlinux.srec := -I binary -O srec
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$(obj)/vmlinux.srec: $(obj)/compressed/vmlinux FORCE
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$(call if_changed,objcopy)
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OBJCOPYFLAGS_uImage.srec := -I binary -O srec
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$(obj)/uImage.srec: $(obj)/uImage FORCE
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$(call if_changed,objcopy)
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$(obj)/uImage: $(obj)/uImage.$(suffix_y)
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@ln -sf $(notdir $<) $@
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@echo ' Image $@ is ready'
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export CONFIG_PAGE_OFFSET CONFIG_MEMORY_START CONFIG_BOOT_LINK_OFFSET \
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CONFIG_PHYSICAL_START CONFIG_ZERO_PAGE_OFFSET CONFIG_ENTRY_OFFSET \
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KERNEL_MEMORY suffix_y
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