How can I configure Travis CI so that `xcrun` can find `altool` (xcode 11.3 on Mac OS X 10.14)?

Question

When running my build for notarization on Travis CI I get the following error:

xcrun: error: unable to find utility “altool”, not a developer tool or in PATH

You can find complete build output here: https://travis-ci.org/github/trufflesuite/ganache/jobs/663747601#L3825

Complete Travis config here: https://travis-ci.org/github/trufflesuite/ganache/jobs/663747601/config

I've tried running sudo xcode-select -r and sudo xcode-select -s /Applications/Xcode.app per tips found on github and stack overflow (https://stackoverflow.com/a/56617634/160173, https://stackoverflow.com/a/53204124/160173), to no avail.

What am I missing?

Answer 1

My issue was that my Travis config wasn't actually using the root-level osx_image directive of "xcode11.3"; this directive was being ignored due to my use of Travis' include matrix. The correct way to specify the osx_image when using an include matrix is as follows:

matrix:
  include:
  - os: osx
    osx_image: "xcode11.3"
  - os: linux
    dist: bionic

Once I made this change I didn't need to try the xcode-select solutions linked in my question above.