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| author |   Denis Efremov <efremov@linux.com> | 2020-06-05 10:39:55 +0300 |
|---|---|---|
| committer |   Masahiro Yamada <masahiroy@kernel.org> | 2020-06-06 23:42:01 +0900 |
| commit | 8dfb61dcbaceb19a5ded5e9c9dcf8d05acc32294 (patch) | |
| tree | e533bf8292cb5973d7e21318690d417d83bcf679 /arch/arm | |
| parent | Makefile: install modules.builtin even if CONFIG_MODULES=n (diff) | |
| download | wireguard-linux-8dfb61dcbaceb19a5ded5e9c9dcf8d05acc32294.tar.xz wireguard-linux-8dfb61dcbaceb19a5ded5e9c9dcf8d05acc32294.zip | |
kbuild: add variables for compression tools
Allow user to use alternative implementations of compression tools,
such as pigz, pbzip2, pxz. For example, multi-threaded tools to
speed up the build:
$ make GZIP=pigz BZIP2=pbzip2
Variables _GZIP, _BZIP2, _LZOP are used internally because original env
vars are reserved by the tools. The use of GZIP in gzip tool is obsolete
since 2015. However, alternative implementations (e.g., pigz) still rely
on it. BZIP2, BZIP, LZOP vars are not obsolescent.
The credit goes to @grsecurity.
As a sidenote, for multi-threaded lzma, xz compression one can use:
$ export XZ_OPT="--threads=0"
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Diffstat (limited to 'arch/arm')
| -rwxr-xr-x | arch/arm/boot/deflate_xip_data.sh | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/boot/deflate_xip_data.sh b/arch/arm/boot/deflate_xip_data.sh index 40937248cebe..739f0464321e 100755 --- a/arch/arm/boot/deflate_xip_data.sh +++ b/arch/arm/boot/deflate_xip_data.sh @@ -56,7 +56,7 @@ trap 'rm -f "$XIPIMAGE.tmp"; exit 1' 1 2 3 # substitute the data section by a compressed version $DD if="$XIPIMAGE" count=$data_start iflag=count_bytes of="$XIPIMAGE.tmp" $DD if="$XIPIMAGE" skip=$data_start iflag=skip_bytes | -gzip -9 >> "$XIPIMAGE.tmp" +$_GZIP -9 >> "$XIPIMAGE.tmp" # replace kernel binary mv -f "$XIPIMAGE.tmp" "$XIPIMAGE" |