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authorMasahiro Yamada <yamada.masahiro@socionext.com>2019-02-20 05:23:56 +0100
committerMasahiro Yamada <yamada.masahiro@socionext.com>2019-02-27 13:41:27 +0100
commitbd55f96fa9fc29702ec30d75a4290bdadb00209d (patch)
tree8848f6aab1d11366e62a767e3e36dd4cf021c240 /init/Kconfig
parentkbuild: hardcode genksyms path and remove GENKSYMS variable (diff)
downloadlinux-bd55f96fa9fc29702ec30d75a4290bdadb00209d.tar.xz
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kbuild: refactor cc-cross-prefix implementation
- $(word 1, <text>) is equivalent to $(firstword <text>) - hardcode "gcc" instead of $(CC) - minimize the shell script part A little more notes in case $(filter-out -%, ...) is not clear. arch/mips/Makefile passes prefixes depending on the configuration. CROSS_COMPILE := $(call cc-cross-prefix, $(tool-archpref)-linux- \ $(tool-archpref)-linux-gnu- $(tool-archpref)-unknown-linux-gnu-) In the Kconfig stage (e.g. when you run 'make defconfig'), neither CONFIG_32BIT nor CONFIG_64BIT is defined. So, $(tool-archpref) is empty. As a result, "-linux -linux-gnu- -unknown-linux-gnu" is passed into cc-cross-prefix. The command 'which' assumes arguments starting with a hyphen as command options, then emits the following messages: Illegal option -l Illegal option -l Illegal option -u I think it is strange to define CROSS_COMPILE depending on the CONFIG options since you need to feed $(CC) to Kconfig, but it is how MIPS Makefile currently works. Anyway, it would not hurt to filter-out invalid strings beforehand. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
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