Date: Wed, 31 May 2017 19:45:26 -0700 From: Steve Kargl <sgk@troutmask.apl.washington.edu> To: Pedro Giffuni <pfg@FreeBSD.org> Cc: freebsd-ports@freeBSD.org Subject: Re: Problems using OpenMP Message-ID: <20170601024526.GA53333@troutmask.apl.washington.edu> In-Reply-To: <d0b35d5d-05a1-0445-476d-2c638d687fab@FreeBSD.org> References: <d0b35d5d-05a1-0445-476d-2c638d687fab@FreeBSD.org>
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On Wed, May 31, 2017 at 08:56:18PM -0500, Pedro Giffuni wrote: > > FWIW, I tried using OpenMP in a port (hypre) and I thought the option > would be something as simple as this: > > OPENMP_CONFIGURE_WITH= openmp > OPENMP_CONFIGURE_USES= compiler:openmp > > Unfortunately that is not enough: > > ... > > In file included from ./_hypre_utilities.h:16: > ./HYPRE_utilities.h:29:10: fatal error: 'omp.h' file not found > #include <omp.h> > ^~~~~~~ > --- amg_linklist.o --- > ... > > And the file is here: > > /usr/local/lib/gcc5/gcc/x86_64-portbld-freebsd11.0/5.4.0/include/omp.h > /usr/local/llvm39/lib/clang/3.9.1/include/omp.h > > Which is not really clean to include :(. Any suggestion? > This is similar to the problem with having to find -Wl,-L/usr/local/... to find gfortran's shared libraries. For gfortran you can do #! /bin/sh LD_LIBRARY_PATH=$HOME/work/lib export LD_LIBRARY_PATH LD_RUN_PATH=$HOME/work/lib export LD_RUN_PATH PATH=$HOME/work/bin:$PATH gfortran $@ gcc has a C_INCLUDE_PATH environmental variable. Don't know if this works with gfortran or if there is a GFORTRAN_INCLUDE_PATH. This does not work with flang as she does not support LD_LIBRARY_PATH or LD_RUN_PATH. For openmp, and in particularly for the old fashion omp.h file, you'll need to add an appropriate -I/path/to/omp... stuff to your FFLAGS. You can add -I/usr/local/flang/include to /usr/local/bin/flang as it is a simple Bourne shell script. -- Steve 20170425 https://www.youtube.com/watch?v=VWUpyCsUKR4 20161221 https://www.youtube.com/watch?v=IbCHE-hONow
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