# install p4v tools
brew install --cask p4v
# configure git
git config --global diff.tool p4merge
git config --global difftool.p4merge.path /Applications/p4merge.app/Contents/Resources/launchp4merge
git config --global difftool.prompt false
git config --global merge.tool p4merge
git config --global mergetool.p4merge.path /Applications/p4merge.app/Contents/Resources/launchp4mergeOlderNewer