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authorDenis Efremov <efremov@linux.com>2020-06-05 10:39:55 +0300
committerMasahiro Yamada <masahiroy@kernel.org>2020-06-06 23:42:01 +0900
commit8dfb61dcbaceb19a5ded5e9c9dcf8d05acc32294 (patch)
treee533bf8292cb5973d7e21318690d417d83bcf679 /arch/ia64
parente0b250b57dcf403529081e5898a9de717f96b76b (diff)
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 The use of GZIP in gzip tool is obsolete since 2015.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/ia64')
-rw-r--r--arch/ia64/Makefile2
1 files changed, 1 insertions, 1 deletions
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@@ -40,7 +40,7 @@ $(error Sorry, you need a newer version of the assember, one that is built from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)) $< $@