OS X

El Capitan

• download and install via Appstore (had to find the download later in Applications folder)
  • be careful, new OS X versions will wreak havoc on other partitions
• bump XCode first-thing
  • run it to get it to install additional components
  • reboot

Development

• install brew
  • had to reinstall and uninstall macports
  • had to disable SIP (system protection) from Mac-R-on-boot safe mode, then: csrutil disable
  • brew update
  • brew install cmake
  • brew tap homebrew/dupes # this fixed missing zlib dependency
  • brew install openssl
  • brew link openssl --force