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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-03-28 22:34:25 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-03-29 09:34:59 +0300 |
| commit | e8d368ad20f514dce86a64931fe4a6f06a0a6703 (patch) | |
| tree | 141af9d224b76b639f619407ad5f71dcc918cc71 /drivers/firmware/efi/libstub/Makefile | |
| parent | 1a9df9e29c2afecf6e3089442d429b377279ca3c (diff) | |
| download | linux-e8d368ad20f514dce86a64931fe4a6f06a0a6703.tar.xz | |
efi/libstub: Refactor the cmd_stubcopy Makefile command
It took me a while to understand what is going on in the nested
if-blocks.
Simplify it by removing unneeded code.
- if_changed automatically adds 'set -e', so any failure in the
series of commands makes it immediately fail as a whole.
So, the outer if block is entirely redundant.
- Since commit 9c2af1c7377a ("kbuild: add .DELETE_ON_ERROR special target"),
GNU Make automatically deletes the target on any failure
in its recipe. The explicit 'rm -f $@' is redundant.
- Surrounding commands with ( ) will spawn a subshell to execute them
in it, but it is rarely useful to do so.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20190328193429.21373-2-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware/efi/libstub/Makefile')
| -rw-r--r-- | drivers/firmware/efi/libstub/Makefile | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/firmware/efi/libstub/Makefile b/drivers/firmware/efi/libstub/Makefile index b0103e16fc1b..ae9081988c88 100644 --- a/drivers/firmware/efi/libstub/Makefile +++ b/drivers/firmware/efi/libstub/Makefile @@ -86,12 +86,13 @@ $(obj)/%.stub.o: $(obj)/%.o FORCE # this time, use objcopy and leave all sections in place. # quiet_cmd_stubcopy = STUBCPY $@ - cmd_stubcopy = if $(STRIP) --strip-debug $(STUBCOPY_RM-y) -o $@ $<; \ - then if $(OBJDUMP) -r $@ | grep $(STUBCOPY_RELOC-y); \ - then (echo >&2 "$@: absolute symbol references not allowed in the EFI stub"; \ - rm -f $@; /bin/false); \ - else $(OBJCOPY) $(STUBCOPY_FLAGS-y) $< $@; fi \ - else /bin/false; fi + cmd_stubcopy = \ + $(STRIP) --strip-debug $(STUBCOPY_RM-y) -o $@ $<; \ + if $(OBJDUMP) -r $@ | grep $(STUBCOPY_RELOC-y); then \ + echo "$@: absolute symbol references not allowed in the EFI stub" >&2; \ + /bin/false; \ + fi; \ + $(OBJCOPY) $(STUBCOPY_FLAGS-y) $< $@ # # ARM discards the .data section because it disallows r/w data in the |