From: Fengguang Wu <fengguang.wu@intel.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: kbuild-all@01.org,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Ralf Baechle <ralf@linux-mips.org>
Subject: Re: arch/mips/vdso/gettimeofday.c:1:0: error: '-march=r3900' requires '-mfp32'
Date: Tue, 5 Jan 2016 22:30:39 +0800 [thread overview]
Message-ID: <20160105143039.GA5772@wfg-t540p.sh.intel.com> (raw)
In-Reply-To: <568BCD07.6090401@roeck-us.net>
Hi Guenter,
On Tue, Jan 05, 2016 at 06:02:47AM -0800, Guenter Roeck wrote:
> On 01/05/2016 12:22 AM, Fengguang Wu wrote:
> >On Tue, Jan 05, 2016 at 12:09:14AM -0800, Guenter Roeck wrote:
> >>On 01/04/2016 11:23 PM, kbuild test robot wrote:
> >>>Hi Guenter,
> >>>
> >>>First bad commit (maybe != root cause):
> >>>
> >>>tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> >>>head: 168309855a7d1e16db751e9c647119fe2d2dc878
> >>>commit: 398c7500a1f5f74e207bd2edca1b1721b3cc1f1e MIPS: VDSO: Fix build error with binutils 2.24 and earlier
> >>>date: 6 days ago
> >>>config: mips-jmr3927_defconfig (attached as .config)
> >>>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 398c7500a1f5f74e207bd2edca1b1721b3cc1f1e
> >>> # save the attached .config to linux build tree
> >>> make.cross ARCH=mips
> >>>
> >>>All errors (new ones prefixed by >>):
> >>>
> >>>>>arch/mips/vdso/gettimeofday.c:1:0: error: '-march=r3900' requires '-mfp32'
> >>> /*
> >>> ^
> >>>
> >>AFAICS this is using the mips cross compiler version 4.9.0 from kernel.org [1],
> >>which in turn uses binutils 2.24. At least this is what make.cross tries to install.
> >
> >Oops, sorry. I'm now using the debian MIPS cross compiler 5.2.1 ...
> >make.cross has not been updated yet.
> >
> No problem. FWIW, I tested my patch with the compiler from Yocto 2.0, which
> uses gcc 5.2.0 and binutils 2.25.1, with no problem.
>
> Do you have directions on how to install a debian cross compiler into a Ubuntu system ?
> Alternatively, what version of binutils does the mips cross compiler use ?
These are the installed version in my Debian:
||/ Name Version Architecture Description
+++-====================================-=======================-=======================-=============================================================================
ii gcc-5-mips-linux-gnu 5.2.1-16cross1 amd64 GNU C compiler
ii gcc-5-mipsel-linux-gnu 5.2.1-16cross1 amd64 GNU C compiler
ii binutils-mips-linux-gnu 2.25-8 amd64 GNU binary utilities, for mips-linux-gnu target
ii binutils-mipsel-linux-gnu 2.25-8 amd64 GNU binary utilities, for mipsel-linux-gnu target
You may check if these packages are available on Ubuntu. Anyway the
versions are close to yours. This is interesting, I'll do more checks.
Thanks,
Fengguang
> >>I downloaded it and used it to compile both the attached configuration as well
> >>as jmr3927_defconfig. Both are building just fine for me. On top of that,
> >>arch/mips/vdso/gettimeofday.c should not build in the first place with binutils 2.24
> >>(and doesn't build for me).
> >>
> >>What am I missing ?
> >>
> >>Guenter
> >>
> >>---
> >>[1] https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.9.0/x86_64-gcc-4.9.0-nolibc_mips-linux.tar.xz
> >
next prev parent reply other threads:[~2016-01-05 14:30 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-05 7:23 arch/mips/vdso/gettimeofday.c:1:0: error: '-march=r3900' requires '-mfp32' kbuild test robot
2016-01-05 8:09 ` Guenter Roeck
2016-01-05 8:22 ` Fengguang Wu
2016-01-05 14:02 ` Guenter Roeck
2016-01-05 14:30 ` Fengguang Wu [this message]
2016-01-05 15:15 ` Guenter Roeck
2016-01-06 11:50 ` Fengguang Wu
2016-01-06 11:59 ` Fengguang Wu
2016-01-06 12:09 ` [kbuild-all] " Fengguang Wu
2016-01-05 14:35 ` Ralf Baechle
2016-02-28 8:42 kbuild test robot
2016-02-28 10:09 ` Guenter Roeck
2016-03-06 6:56 kbuild test robot
2016-03-13 9:16 kbuild test robot
2016-03-20 1:56 kbuild test robot
2016-04-03 9:23 kbuild test robot
2016-04-17 6:32 kbuild test robot
2016-07-22 17:28 kbuild test robot
2016-08-01 20:24 kbuild test robot
2016-08-28 11:23 kbuild test robot
2016-09-03 23:54 kbuild test robot
2016-09-14 16:02 kbuild test robot
2016-09-23 2:24 kbuild test robot
2016-10-02 2:39 kbuild test robot
2016-10-16 2:49 kbuild test robot
2016-11-05 23:48 kbuild test robot
2016-11-13 2:01 kbuild test robot
2016-12-11 1:21 kbuild test robot
2017-01-01 17:19 kbuild test robot
2017-01-15 1:51 kbuild test robot
2017-02-05 15:49 kbuild test robot
2017-02-12 0:17 kbuild test robot
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