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8d36a62364
iThis fixes a bug where the generated asm-offsets.h file was saved in the source tree even with make O=. Thanks to Stephen Rothwell <sfr@canb.auug.org.au> for the report. Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
50 lines
1.2 KiB
Makefile
50 lines
1.2 KiB
Makefile
#
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# Kbuild for top-level directory of the kernel
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# This file takes care of the following:
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# 1) Generate asm-offsets.h
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#####
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# 1) Generate asm-offsets.h
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#
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offsets-file := include/asm-$(ARCH)/asm-offsets.h
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always := $(offsets-file)
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targets := $(offsets-file)
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targets += arch/$(ARCH)/kernel/asm-offsets.s
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# Default sed regexp - multiline due to syntax constraints
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define sed-y
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"/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"
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endef
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# Override default regexp for specific architectures
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sed-$(CONFIG_MIPS) := "/^@@@/s///p"
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quiet_cmd_offsets = GEN $@
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define cmd_offsets
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mkdir -p $(dir $@); \
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cat $< | \
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(set -e; \
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echo "#ifndef __ASM_OFFSETS_H__"; \
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echo "#define __ASM_OFFSETS_H__"; \
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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 $(srctree)/Kbuild"; \
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echo " *"; \
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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" ) > $@
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endef
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# We use internal kbuild rules to avoid the "is up to date" message from make
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arch/$(ARCH)/kernel/asm-offsets.s: arch/$(ARCH)/kernel/asm-offsets.c FORCE
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$(Q)mkdir -p $(dir $@)
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$(call if_changed_dep,cc_s_c)
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$(obj)/$(offsets-file): arch/$(ARCH)/kernel/asm-offsets.s Kbuild
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$(call cmd,offsets)
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