I'm unable to build the compiler from this repository on macOS (OS X), although I am able to build it from fsharp/fsharp. It seems like we should be able to build this repo on OS X (it's even mentioned in the README).

I'm opening this issue to track commits / PRs related to fixing the macOS build.

The issues I've discovered so far with macOS builds:

• Enable Jenkins builds for OSX (Add OSX to OS list for Jenkins CI builds #2134)
  • Modify README to include Jenkins build status indicators
• Travis CI builds need to be enabled (in .travis.yml) for macOS / OS X (Enable macOS (OS X) testing for Travis CI builds #2109)
• build.sh and before_install.sh need some modifications to generalize Linux/Ubuntu-specific steps, or only run them when running on Linux/Ubuntu. (Modify before_install.sh for OSX compatibility #2125)
• Some external build tasks called from .targets files need to be fixed to launch via mono or dotnet.
  • *.fsx scripts called through fsi
  • FsLexYacc.targets (which calls fslex.exe and fsyacc.exe)