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

[Mike Looijmans]

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


Maybe something missing in the OE compiler options for the compiler?


Met vriendelijke groet / kind regards,

Mike Looijmans
System Expert


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