[cfe-dev] OpenMP header path?

[Roman Lebedev via cfe-dev]

On Wed, Feb 6, 2019 at 11:35 AM Eugene Zelenko via cfe-dev
<cfe-dev at lists.llvm.org> wrote:
>
> Hi!
>
> I'm trying to build file with enabled OpenMP support by trunk Clang
> with GCC STL. Compilation is failing because of:
>
> fatal error: 'omp.h' file not found
> #include <omp.h>
Clang is normally looking for it's own omp.h
It won't find it unless you actually install clang.
It won't work out of build dir.
https://bugs.llvm.org/show_bug.cgi?id=40139

Also, you need to build libomp for that header to be build, IIRC.

> Clang options:
>
> -stdlib=libstdc++ --gcc-toolchain=<GCC 6.3.0 path> -fopenmp
>
> Search path reported by -v:
>
> #include <...> search starts here:
>
> <GCC 6.3.0 path>/lib/gcc/x86_64-redhat-linux/6.3.0/../../../../include/c++/6.3.0
> <GCC 6.3.0 path>/lib/gcc/x86_64-redhat-linux/6.3.0/../../../../include/c++/6.3.0/x86_64-redhat-linux/32
> <GCC 6.3.0 path>/lib/gcc/x86_64-redhat-linux/6.3.0/../../../../include/c++/6.3.0/backward
>
> Location of omp.h:
>
> <GCC 6.3.0 path>/lib/gcc/x86_64-redhat-linux/6.3.0/include/omp.h
>
> Eugene.
Roman.

> _______________________________________________
> cfe-dev mailing list
> cfe-dev at lists.llvm.org
> https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-dev