Homebrew requires formulae to be in a tap, rejecting: /var/folders/q0/wmf37v850txck86cpnvwm_zw0000gn/T/clp-dep-formulas.NhOLrmlAot/cmake.rb (/private/var/folders/q0/wmf37v850txck86cpnvwm_zw0000gn/T/clp-dep-formulas.NhOLrmlAot/cmake.rb) To create a tap, run e.g. brew tap-new <user|org>/<repository> To create a formula in a tap run e.g. brew create <url> --tap=<user|org>/<repository>