Benchmarks results for FreeBSD 11

[Fernando Herrero Carrón]

El 29 ago. 2016 12:36 a. m., "K. Macy" <kmacy at freebsd.org> escribió:
>
> On Sun, Aug 28, 2016 at 2:01 PM, K. Macy <kmacy at freebsd.org> wrote:
> >>>
> >>
> >> With 11, one can even simply install devel/openmp which will only
install the libopenmp bits from llvm, and after that, base cc can do openmp.
> >
> > This isn't really useful unless the clang in base knows where to find
> > libomp. Considering that even the devel/llvm ports aren't configured
> > properly for that I don't see -fopenmp working. Without patching
> > makefiles or configure. So although this is better than having to
> > installing a complete copy of the compiler for the sake of a single
> > library it's still forcing FreeBSD users to jump through extra hoops
> > that they don't have to with gcc or on other platforms.
>
> I just tried this on Ubuntu and it looks like even there clang doesn't
> invoke ld correctly to make -fopenmp work. Both icc and gcc do this
> automatically. Thus I wonder if anyone is actually using openmp in
> earnest with clang.
>
>
> mmacy at pandemonium:~$ clang++ -fopenmp omp.cpp
> /usr/bin/ld: cannot find -liomp5
> clang-3.5: error: linker command failed with exit code 1 (use -v to
> see invocation)
> mmacy at pandemonium:~$ clang++-3.8 -fopenmp omp.cpp
> /usr/bin/ld: cannot find -lomp
> clang: error: linker command failed with exit code 1 (use -v to see
invocation)
> mmacy at pandemonium:~$ g++ -fopenmp omp.cpp
> mmacy at pandemonium:~$ g++-4.9 -fopenmp omp.cpp
> mmacy at pandemonium:~$
>

I'm writing from my cellphone away from my computer, so take this with a
grain of salt:

-L/usr/local/llvm38/lib