Re: arch/mips/vdso/elf.S:1:0: error: '-march=r3900' requires '-mfp32'

From	"Maciej W. Rozycki" <macro@imgtec.com>
Newsgroups	linux.kernel
Subject	Re: arch/mips/vdso/elf.S:1:0: error: '-march=r3900' requires '-mfp32'
Date	2016-12-16 02:00 +0100
Message-ID	<sOP2p-4v4-1@gated-at.bofh.it> (permalink)
References	<sN0Ol-12f-1@gated-at.bofh.it> <sNMzD-4TT-13@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Tue, 13 Dec 2016, Ralf Baechle wrote:

> > FYI, the error/warning still remains.
> > 
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> > head:   045169816b31b10faed984b01c390db1b32ee4c1
> > commit: ebb5e78cc63417a35254a791de66e1cc84f963cc MIPS: Initial implementation of a VDSO
> > date:   1 year, 1 month ago
> > config: mips-jmr3927_defconfig (attached as .config)
> > compiler: mips-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
> > 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 ebb5e78cc63417a35254a791de66e1cc84f963cc
> >         # save the attached .config to linux build tree
> >         make.cross ARCH=mips 
> 
> Which binutils are you using with this compiler?

 FYI, see the discussion: <https://patchwork.linux-mips.org/patch/14505/>, 
and the original patch: <https://patchwork.linux-mips.org/patch/14465/>.  

 My advice has been to stick `$(call cc-option,-mno-float,-msoft-float)' 
there instead, although there might be a slight controversy around it, so 
if you are happy with revisiting Guenter's change in the future, then you 
may well pick the original patch.

 Myself, I don't have resources available right now to submit a revised 
patch, sorry.

  Maciej

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Re: arch/mips/vdso/elf.S:1:0: error: '-march=r3900' requires '-mfp32' Ralf Baechle <ralf@linux-mips.org> - 2016-12-13 05:10 +0100
  Re: [kbuild-all] arch/mips/vdso/elf.S:1:0: error: '-march=r3900'  requires '-mfp32' Fengguang Wu <fengguang.wu@intel.com> - 2016-12-14 05:10 +0100
  Re: arch/mips/vdso/elf.S:1:0: error: '-march=r3900' requires  '-mfp32' "Maciej W. Rozycki" <macro@imgtec.com> - 2016-12-16 02:00 +0100

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