[dpdk-dev] compile error with linuxapp-clang target on Fedora 20 with 3.15.10 kernel

[Bruce Richardson]

On Mon, Sep 22, 2014 at 03:12:43PM -0700, Matthew Hall wrote:
> On Mon, Sep 22, 2014 at 04:05:29PM -0400, Neil Horman wrote:
> > On Mon, Sep 22, 2014 at 12:23:36PM -0700, Matthew Hall wrote:
> > > I fixed some of the clang errors a few weeks ago. But some of my patches got sent back due to issues seen by others and I didn't have time to fix them yet.
> > Can you elaborate on the specific issue here?
> > Neil
> 
> Sure...
> 
> Have a look at this thread. With this, I got it compiling fine with Clang on 
> Ubuntu 14.04 LTS.
> 
> Some of your stuff was funky kernel problems... I probably didn't get that as 
> I was using an earlier kernel release.
> 
> One of the patches was merged as it was trivial but the others involved 
> disabling some warnings on certain examples... but people said they preferred 
> using ifdef's instead to fix them, which I didn't get a chance to do yet.
> 
> Maybe we could try and make all of these clang fixes happen together. I really 
> value the better error messages, I can fix bugs much quicker with all of 
> those.
> 
> Matthew.

"make examples" on all the examples has failed for some time, but the 
compilation of the main libs used to work. I've pulled down a 3.14 kernel 
for fedora from koji and confirmed that building with 
"RTE_KERNELDIR=/usr/src/kernels/3.14.9-200.fc20.x86_64/" works fine. It's 
something that has changed in 3.15 and beyond that is causing clang flags to 
get passed in to gcc. I've confirmed that 3.16 also doesn't work.

/Bruce