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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 | |
| parent | e0b250b57dcf403529081e5898a9de717f96b76b (diff) | |
| download | linux-8dfb61dcbaceb19a5ded5e9c9dcf8d05acc32294.tar.bz2 | |
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 The use of GZIP in gzip tool is obsolete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')
| -rwxr-xr-x | arch/arm/boot/deflate_xip_data.sh | 2 | ||||
| -rw-r--r-- | arch/ia64/Makefile | 2 | ||||
| -rw-r--r-- | arch/m68k/Makefile | 8 | ||||
| -rw-r--r-- | arch/parisc/Makefile | 2 |
4 files changed, 7 insertions, 7 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" diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile index 32240000dc0c..f817f3d5e758 100644 --- a/arch/ia64/Makefile +++ b/arch/ia64/Makefile @@ -40,7 +40,7 @@ $(error Sorry, you need a newer version of the assember, one that is built from endif quiet_cmd_gzip = GZIP $@ -cmd_gzip = cat $(real-prereqs) | gzip -n -f -9 > $@ +cmd_gzip = cat $(real-prereqs) | $(_GZIP) -n -f -9 > $@ quiet_cmd_objcopy = OBJCOPY $@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $(OBJCOPYFLAGS_$(@F)) $< $@ diff --git a/arch/m68k/Makefile b/arch/m68k/Makefile index 5d9288384096..ce6db5e5a5a3 100644 --- a/arch/m68k/Makefile +++ b/arch/m68k/Makefile @@ -135,10 +135,10 @@ vmlinux.gz: vmlinux ifndef CONFIG_KGDB cp vmlinux vmlinux.tmp $(STRIP) vmlinux.tmp - gzip -9c vmlinux.tmp >vmlinux.gz + $(_GZIP) -9c vmlinux.tmp >vmlinux.gz rm vmlinux.tmp else - gzip -9c vmlinux >vmlinux.gz + $(_GZIP) -9c vmlinux >vmlinux.gz endif bzImage: vmlinux.bz2 @@ -148,10 +148,10 @@ vmlinux.bz2: vmlinux ifndef CONFIG_KGDB cp vmlinux vmlinux.tmp $(STRIP) vmlinux.tmp - bzip2 -1c vmlinux.tmp >vmlinux.bz2 + $(_BZIP2) -1c vmlinux.tmp >vmlinux.bz2 rm vmlinux.tmp else - bzip2 -1c vmlinux >vmlinux.bz2 + $(_BZIP2) -1c vmlinux >vmlinux.bz2 endif archclean: diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index 628cd8bb7ad8..e1aa514aeb36 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -162,7 +162,7 @@ vmlinuz: bzImage $(OBJCOPY) $(boot)/bzImage $@ else vmlinuz: vmlinux - @gzip -cf -9 $< > $@ + @$(_GZIP) -cf -9 $< > $@ endif install: |