I just updated to macOS 10.15 Catalina and Xcode 11.1. I'm now hitting a
mach configure error:
DEBUG: Executing: `pkgutil --pkg-info com.apple.pkg.CLTools_Executables`
DEBUG: The command returned non-zero exit status 1.
DEBUG: Its error output was:
DEBUG: | No receipt for 'com.apple.pkg.CLTools_Executables' found at '/'.
ERROR: Could not find installed Xcode Command Line Tools; run `xcode-select --install` and follow the instructions to install them then try again; if you wish to build without Xcode Command Line Tools installed, add the --disable-xcode-checks configure flag
But I have Xcode Command Line Tools installed.
xcode-select --install says "error: command line tools are already installed, use "Software Update" to install updates". Also, my mozconfig is set to use mozbuild's vendored clang builds, not Xcode clang.
Haik says he hit this same configure error when first started testing Calatina betas. Adding
ac_add_options --disable-xcode-checks to his mozconfig made the problem go away. I haven't tried that yet, but disabling Xcode checks seems like something we shouldn't do. :)