The install relies on brew. please see https://brew.sh, also we will be using default apps clang compiler. Alternatively we can use gnu, but this requires additional steps as we will need to build boost ourselves.

• first install brew. Paste that in a macOS Terminal or Linux shell prompt.

  /bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install.sh)"

  
  

• next install ecflow dependencies

  brew install boost brew install boost-python3 brew install openssl brew install qt

  
  

• Download and place in $HOME/git

  git clone ssh://git@git.ecmwf.int/ecflow/ecflow.git git clone ssh://git@git.ecmwf.int/ecsdk/ecbuild.git

  
  

• build ecflow, and will install to ${HOME}/install/ecflow/${version}

  cd $HOME/git/ecflow git checkout develop sh -x build_scripts/mac.sh make -j8 install # if you make a mistake use: sh -x build_scripts/mac.sh clean make -j8 install # clean will blast build directory