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| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-01-17 11:02:44 +0100 |
|---|---|---|
| committer | Masahiro Yamada <yamada.masahiro@socionext.com> | 2019-01-28 01:11:17 +0100 |
| commit | b79c6aa6a1f111eab2fc08b92541c9e88824be72 (patch) | |
| tree | d078e5aa6b60780e734387dd5a604bc057e5045f /scripts/Makefile.lib | |
| parent | kbuild: add real-prereqs shorthand for $(filter-out FORCE,$^) (diff) | |
| download | linux-b79c6aa6a1f111eab2fc08b92541c9e88824be72.tar.xz linux-b79c6aa6a1f111eab2fc08b92541c9e88824be72.zip | |
kbuild: remove unnecessary in-subshell execution
The commands surrounded by ( ) are executed in a subshell, but in
most cases, we do not need to spawn an extra subshell.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'scripts/Makefile.lib')
| -rw-r--r-- | scripts/Makefile.lib | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib index c6fc295e0c48..c0abd9a779c3 100644 --- a/scripts/Makefile.lib +++ b/scripts/Makefile.lib @@ -271,7 +271,7 @@ DTC_FLAGS += $(DTC_FLAGS_$(basetarget)) # Generate an assembly file to wrap the output of the device tree compiler quiet_cmd_dt_S_dtb= DTB $@ cmd_dt_S_dtb= \ -( \ +{ \ echo '\#include <asm-generic/vmlinux.lds.h>'; \ echo '.section .dtb.init.rodata,"a"'; \ echo '.balign STRUCT_ALIGNMENT'; \ @@ -281,7 +281,7 @@ cmd_dt_S_dtb= \ echo '__dtb_$(subst -,_,$(*F))_end:'; \ echo '.global __dtb_$(subst -,_,$(*F))_end'; \ echo '.balign STRUCT_ALIGNMENT'; \ -) > $@ +} > $@ $(obj)/%.dtb.S: $(obj)/%.dtb FORCE $(call if_changed,dt_S_dtb) @@ -335,20 +335,20 @@ printf "%08x\n" $$dec_size | \ ) quiet_cmd_bzip2 = BZIP2 $@ - cmd_bzip2 = (cat $(real-prereqs) | bzip2 -9 && $(size_append)) > $@ + cmd_bzip2 = { cat $(real-prereqs) | bzip2 -9 && $(size_append); } > $@ # Lzma # --------------------------------------------------------------------------- quiet_cmd_lzma = LZMA $@ - cmd_lzma = (cat $(real-prereqs) | lzma -9 && $(size_append)) > $@ + cmd_lzma = { cat $(real-prereqs) | lzma -9 && $(size_append); } > $@ quiet_cmd_lzo = LZO $@ - cmd_lzo = (cat $(real-prereqs) | lzop -9 && $(size_append)) > $@ + cmd_lzo = { cat $(real-prereqs) | lzop -9 && $(size_append); } > $@ quiet_cmd_lz4 = LZ4 $@ - cmd_lz4 = (cat $(real-prereqs) | lz4c -l -c1 stdin stdout && \ - $(size_append)) > $@ + cmd_lz4 = { cat $(real-prereqs) | lz4c -l -c1 stdin stdout && \ + $(size_append); } > $@ # U-Boot mkimage # --------------------------------------------------------------------------- @@ -390,12 +390,11 @@ quiet_cmd_uimage = UIMAGE $@ # big dictionary would increase the memory usage too much in the multi-call # decompression mode. A BCJ filter isn't used either. quiet_cmd_xzkern = XZKERN $@ - cmd_xzkern = (cat $(real-prereqs) | \ - sh $(srctree)/scripts/xz_wrap.sh && $(size_append)) > $@ + cmd_xzkern = { cat $(real-prereqs) | sh $(srctree)/scripts/xz_wrap.sh && \ + $(size_append); } > $@ quiet_cmd_xzmisc = XZMISC $@ - cmd_xzmisc = (cat $(real-prereqs) | \ - xz --check=crc32 --lzma2=dict=1MiB) > $@ + cmd_xzmisc = cat $(real-prereqs) | xz --check=crc32 --lzma2=dict=1MiB > $@ # ASM offsets # --------------------------------------------------------------------------- |