Chapter2/README.osx at master · essentialsofparallelcomputing/Chapter2 · GitHub

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# Instructions for OSx setup

The two most common package managers for OSx are Brew and Macports.

=========================================
Installing command line tools
=========================================

For either package manager, the command line tools are needed.

Install command line tools:
   xcode-select --install
      Click on install

If you have xcode already installed, you may get "not currently available". You should
already have the command line tools.

You may also need to accept the Xcode license with:

xcodebuild -license

The install for command line tools sometimes changes with versions of xcode, so check
the latest information on the web for installs

=========================================
Installing with the Brew package manager
=========================================

To setup Brew on the Mac (version 10.12 or higher)

From the terminal

Now to start brew installation:
/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

After basic install, use "brew help" for commands. Running "brew doctor" will give hints
on fixing permissions and other problems.

Now install packages

brew install openmpi gcc cmake

The regular Mac compiler has caused issues in the past. The biggest issue is that
it hasn't supported OpenMP. The brew install will give suggestions to add to the
shell startup scripts. For bash it will look something like:

export CC=gcc-10
export CXX=g++-10
export FC=gfortran-10

Packages are installed in /usr/local. Some changes to the path will be suggested during install such as

export PATH="/usr/local/sbin:$PATH

Note: To install valgrind for the last example. Valgrind often lags behind in releasing for the latest
Mac OSx version, so check if it is supported.

brew info valgrind

brew install valgrind

=========================================
Installing with the Macports package manager
=========================================

Download the pkg or dmg installer from https://www.macports.org/ and go to the download page.

[sudo] port install gcc openmpi cmake

Packages are installed in /opt/local. The sudo command may be required to elevate priviledges for
the install. You should be an administrative user to use the sudo command.

Some changes to your path will be needed in one of your shell configuration files. It will look something like:

export PATH=/opt/local/bin:/opt/local/sbin:$PATH

To install valgrind for the last example. Valgrind often lags behind in releasing for the latest
Mac OSx version, so check if it is supported.

[sudo] port install valgrind