A script that will automatically install OpenCoarrays using Homebrew. MPICH and OpenCoarrays will be compiled and installed with GCC-7

brew-install-opencoarrays.sh

#!/usr/bin/env bash
set -o nounset
set -o pipefail
set -o errexit
set -o errtrace

msg="Press Ctrl-C to abort, or enter to continue"
echo "Tapping homebrew-bundle"
read -rp "${msg}"
brew tap homebrew/bundle

echo "Writing  Brewfile for use with \`brew bundle\`"
read -rp "${msg}"
cat <<-EOF > Brewfile
brew 'cmake'
brew 'gcc'
brew 'mpich', args: ['cc=gcc-7']
brew 'opencoarrays', args: ['cc=gcc-7']
EOF

echo "Uninstalling OpenCoarrays and MPICH if installed with Homebrew, unlinking openmpi if installed"
read -rp "${msg}"
brew uninstall opencoarrays || true
brew uninstall mpich || true
brew unlink openmpi || true

echo "Using \`brew bundle\` and previously written Brewfile to install OpenCoarrays and"
echo "MPICH using the latest GCC-7.x. GCC and CMake will also be installed or upgraded."
read -rp "${msg}"
brew bundle --verbose --file=./Brewfile

while true; do
  read -rp "Update your global Brewfile, \`${HOME}/.Brewfile\`? (Recommended)" yn
  case $yn in
      [Yy]* ) cat ./Brewfile >> "${HOME}/.Brewfile"; break;;
      [Nn]* ) exit;;
      * ) echo "Please answer yes or no.";;
  esac
done

This script will install MPICH built with GCC 7.x and the OpenCoarrays linked against MPICH and also built with GCC 7.x. OpenMPI will be unlinked, and previous installations of OpenCoarrays and MPICH will be removed. Here is a one liner you can use on MacOS to download and execute the script:

/usr/bin/env bash <(curl -fsSL https://gist.githubusercontent.com/zbeekman/56ef0c3ca4e98831d31839e8524bec9b/raw/f9256cecc20044ceaae163abb7bb4672cc431e49/brew-install-opencoarrays.sh)

I'll try to remember to update the SHA if I edit the script, but no guarantees; you should make sure you check it against the link to the raw version of this gist.