mipsel-linux-gnu-gcc: error: unrecognized command line option '-mcompact-branches=optimal'

From: kbuild test robot
Date: Mon Sep 12 2016 - 00:04:19 EST


Hi Paul,

FYI, the error/warning still remains.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 9395452b4aab7bc2475ef8935b4a4fb99d778d70
commit: c1a0e9bc885d46e519fd87d35af6a7937abfb986 MIPS: Allow compact branch policy to be changed
date: 11 months ago
config: mips-malta_qemu_32r6_defconfig (attached as .config)
compiler: mipsel-linux-gnu-gcc (Debian 5.4.0-6) 5.4.0 20160609
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
git checkout c1a0e9bc885d46e519fd87d35af6a7937abfb986
# save the attached .config to linux build tree
make.cross ARCH=mips

All errors (new ones prefixed by >>):

>> mipsel-linux-gnu-gcc: error: unrecognized command line option '-mcompact-branches=optimal'
>> mipsel-linux-gnu-gcc: error: unrecognized command line option '-mcompact-branches=optimal'
make[2]: *** [kernel/bounds.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [sub-make] Error 2

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