[OE-core] Building with OpenMP support in OE fails on #include <omp.h>

[Paul Eggleton]

Hi Mike,

On Monday 02 March 2015 15:54:04 Mike Looijmans wrote:
> Here's the problem, running in a devshell:
> 
> # echo '#include <omp.h>' > /tmp/compileme.c
> # $CC -c -fopenmp /tmp/compileme.c
> /tmp/compileme.c:1:17: fatal error: omp.h: No such file or directory
>   #include <omp.h>
>                   ^
> compilation terminated.
> 
> 
> The #pragma's and linking of OpenMP work just fine, it's just the inclusion
> of omp.h that appears to fail.
> 
> What I was actually trying to do is to activate OpenMP in OpenCV to get
> decent performance on a multicore ARM system. But this is holding me back
> now.
> 
> Looking in the sysroots reveals that the include file is actually there:
> 
> $ find tmp-glibc/sysroots/topic-miami-florida-med-xc7z030 -name omp.h
> tmp-glibc/sysroots/topic-miami-florida-med-xc7z030/usr/lib/gcc/arm-oe-linux-
> gnueabi/4.9.1/include/omp.h

Funnily enough this is an issue I fixed a few weeks ago - here's the bug which 
contains a link to the fix:

https://bugzilla.yoctoproject.org/show_bug.cgi?id=7141

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre