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https://github.com/AsahiLinux/u-boot
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3a4f6b60db
Use filechk to generate asm-offsets.h and generic-asm-offsets.h. Based on a patch by Valdis Kletnieks. Reported-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Acked-by: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Michal Marek <mmarek@suse.cz> [ imported from Linux Kernel, commit 70a4fd6c56d0, with adjustment for U-Boot ] Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
69 lines
1.9 KiB
Makefile
69 lines
1.9 KiB
Makefile
#
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# Kbuild for top-level directory of U-Boot
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# This file takes care of the following:
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# 1) Generate generic-asm-offsets.h
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# 2) Generate asm-offsets.h
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# Default sed regexp - multiline due to syntax constraints
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define sed-y
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"s:[[:space:]]*\.ascii[[:space:]]*\"\(.*\)\":\1:; \
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/^->/{s:->#\(.*\):/* \1 */:; \
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s:^->\([^ ]*\) [\$$#]*\([-0-9]*\) \(.*\):#define \1 \2 /* \3 */:; \
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s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; \
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s:->::; p;}"
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endef
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# Use filechk to avoid rebuilds when a header changes, but the resulting file
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# does not
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define filechk_offsets
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(set -e; \
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echo "#ifndef $2"; \
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echo "#define $2"; \
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echo "/*"; \
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echo " * DO NOT MODIFY."; \
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echo " *"; \
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echo " * This file was generated by Kbuild"; \
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echo " */"; \
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echo ""; \
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sed -ne $(sed-y); \
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echo ""; \
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echo "#endif" )
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endef
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#####
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# 1) Generate generic-asm-offsets.h
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generic-offsets-file := include/generated/generic-asm-offsets.h
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always := $(generic-offsets-file)
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targets := $(generic-offsets-file) lib/asm-offsets.s
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# We use internal kbuild rules to avoid the "is up to date" message from make
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lib/asm-offsets.s: lib/asm-offsets.c FORCE
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$(Q)mkdir -p $(dir $@)
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$(call if_changed_dep,cc_s_c)
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$(obj)/$(generic-offsets-file): lib/asm-offsets.s FORCE
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$(call filechk,offsets,__GENERIC_ASM_OFFSETS_H__)
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#####
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# 2) Generate asm-offsets.h
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#
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ifneq ($(wildcard $(srctree)/arch/$(ARCH)/lib/asm-offsets.c),)
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offsets-file := include/generated/asm-offsets.h
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endif
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always += $(offsets-file)
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targets += $(offsets-file)
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targets += arch/$(ARCH)/lib/asm-offsets.s
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CFLAGS_asm-offsets.o := -DDO_DEPS_ONLY
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# We use internal kbuild rules to avoid the "is up to date" message from make
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arch/$(ARCH)/lib/asm-offsets.s: arch/$(ARCH)/lib/asm-offsets.c FORCE
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$(Q)mkdir -p $(dir $@)
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$(call if_changed_dep,cc_s_c)
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$(obj)/$(offsets-file): arch/$(ARCH)/lib/asm-offsets.s FORCE
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$(call filechk,offsets,__ASM_OFFSETS_H__)
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