On Mon, Nov 11, 2019 at 07:27:58AM -0800, Matthew Wilcox wrote:
> On Sun, Nov 10, 2019 at 02:00:05PM +0800, Philip Li wrote:
> > On Fri, Nov 08, 2019 at 07:49:48AM -0800, Matthew Wilcox wrote:
> > > On Fri, Nov 08, 2019 at 12:50:44PM +0800, kbuild test robot wrote:
> > > > tree:   git://git.infradead.org/users/willy/linux-dax.git xarray
> > > > head:   498b1f3c48d9d74d7c2902d9d97a7612a5af869c
> > > > commit: 5a74ac4c4a97bd8b7dba054304d598e2a882fea6 [2/6] idr: Fix idr_get_next_ul race with idr_remove
> > > > config: arc-defconfig (attached as .config)
> > > > compiler: arc-elf-gcc (GCC) 7.4.0
> > > > reproduce:
> > > >         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> > > >         chmod +x ~/bin/make.cross
> > > >         git checkout 5a74ac4c4a97bd8b7dba054304d598e2a882fea6
> > > >         # save the attached .config to linux build tree
> > > >         GCC_VERSION=7.4.0 make.cross ARCH=arc 
> > > 
> > > That doesn't work:
> > > 
> > > $ GCC_VERSION=7.4.0 make.cross ARCH=arc O=.build-arc
> > > cd: received redirection to `https://download.01.org/0day-ci/cross-package/'
> > > lftpget -c https://download.01.org/0day-ci/cross-package/./gcc-7.4.0-nolibc/x86_64-gcc-7.4.0-nolibc_sparc-linux.tar.xz
> > > tar Jxf gcc-7.4.0-nolibc/x86_64-gcc-7.4.0-nolibc_sparc-linux.tar.xz -C /home/willy/0day
> > > No cross compiler for arc
> > > 
> > > Why is it downloading sparc binaries instead of arc binaries?
> > sorry, this is a bug in make.cross for arc compiler. Can you re-get the make.cross file
> > and try again? It should be able download the right compiler
> 
> Yes, this now works for me.
> 
> I can't quite decipher the error messages from the assembler, but it
> seems like this is a bug in gcc-7.4.0 producing invalid assembler input.
> It's fixed in gcc-8.2.0.  We could file a gcc bug about this, but I don't
> know if it's worthwhile.  Maybe just stop testing with gcc-7.4.0 on arc?
Thanks for the info, we will add this to plan to upgrade gcc for cross
compiling.

> 
> Thanks!