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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-09-12 16:40:37 +0900 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-09-14 00:04:41 +1000 |
| commit | 1fdfa4c6af0cc1854b017f308af6bece94568bb6 (patch) | |
| tree | 9b384a6c64cd16b9f9db2acf495c25e88a5438eb /arch/powerpc/kernel/Makefile | |
| parent | caff52dc0b71538cff43c06ede3621fbbf359978 (diff) | |
| download | lwn-1fdfa4c6af0cc1854b017f308af6bece94568bb6.tar.gz lwn-1fdfa4c6af0cc1854b017f308af6bece94568bb6.zip | |
powerpc: improve prom_init_check rule
This slightly improves the prom_init_check rule.
[1] Avoid needless check
Currently, prom_init_check.sh is invoked every time you run 'make'
even if you have changed nothing in prom_init.c. With this commit,
the script is re-run only when prom_init.o is recompiled.
[2] Beautify the build log
Currently, the O= build shows the absolute path to the script:
CALL /abs/path/to/source/of/linux/arch/powerpc/kernel/prom_init_check.sh
With this commit, it is always a relative path to the timestamp file:
PROMCHK arch/powerpc/kernel/prom_init_check
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190912074037.13813-1-yamada.masahiro@socionext.com
Diffstat (limited to 'arch/powerpc/kernel/Makefile')
| -rw-r--r-- | arch/powerpc/kernel/Makefile | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index c6ae0e7914bc..66c54443187d 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -188,15 +188,13 @@ extra-$(CONFIG_ALTIVEC) += vector.o extra-$(CONFIG_PPC64) += entry_64.o extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init.o -ifdef CONFIG_PPC_OF_BOOT_TRAMPOLINE -$(obj)/built-in.a: prom_init_check +extra-$(CONFIG_PPC_OF_BOOT_TRAMPOLINE) += prom_init_check -quiet_cmd_prom_init_check = CALL $< - cmd_prom_init_check = $(CONFIG_SHELL) $< "$(NM)" "$(obj)/prom_init.o" +quiet_cmd_prom_init_check = PROMCHK $@ + cmd_prom_init_check = $(CONFIG_SHELL) $< "$(NM)" $(obj)/prom_init.o; touch $@ -PHONY += prom_init_check -prom_init_check: $(src)/prom_init_check.sh $(obj)/prom_init.o - $(call cmd,prom_init_check) -endif +$(obj)/prom_init_check: $(src)/prom_init_check.sh $(obj)/prom_init.o FORCE + $(call if_changed,prom_init_check) +targets += prom_init_check clean-files := vmlinux.lds |