You can try: ./configure --with-cc=gcc-9 --with-fc=gfortran-9 --with-cxx=g++-9 --download-mpich=1 --with-openmp=1 .....
Or to get a prebuilt mpich with brew compilers: ./configure --with-cc=gcc-9 --with-fc=gfortran-9 --with-cxx=g++-9 --download-mpich=1 --prefix=$HOME/soft/mpich-brew-gcc And later: ./configure --with-mpi-dir=$HOME/soft/mpich-brew-gcc ..... Satish On Tue, 5 May 2020, Mark Adams wrote: > I use MPICH from Homebrew and specify this is configured. mpicc seems to > use XCode now. > > Do you know how I would get Homebew to not use Xcode? > > I actually don't need MPI for this so may I should just set the C compiler > explicitly to gcc.. > Thanks, > > On Tue, May 5, 2020 at 5:57 PM Satish Balay <ba...@mcs.anl.gov> wrote: > > > Ok - this is on your Mac. > > > > >>>>> > > Executing: /usr/local/Cellar/mpich/3.3.2/bin/mpicc --version > > stdout: > > Apple clang version 11.0.3 (clang-1103.0.32.59) > > <<<<< > > > > XCode clang does not support OpenMP as far as I know. > > > > Satish > > > > On Tue, 5 May 2020, Mark Adams wrote: > > > > > Sorry, getting my machines mixed up. > > > > > > On Tue, May 5, 2020 at 5:16 PM Satish Balay <ba...@mcs.anl.gov> wrote: > > > > > > > Sorry - what is the issue here? The attached configure.log looks good > > to > > > > me. > > > > > > > > Satish > > > > > > > > On Tue, 5 May 2020, Mark Adams wrote: > > > > > > > > > This works with OpenMP > > > > > > > > > > > > > > > > > > > > >
