George Colpitts writes:

Hi

I get a strange warning on MacOS when I do ./configure:

checking Xcode version... xcode-select: error: tool 'xcodebuild' requires Xcode, but active developer directory '/Library/Developer/CommandLineTools' is a command line tools instance not found (too old?)

I also get a related strange warning when I do a compile:

ghc hello.hs [1 of 2] Compiling Main ( hello.hs, hello.o ) [Missing object file] [2 of 2] Linking hello [Objects changed] ld: warning: directory not found for option '-L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX12.1.sdk/usr/lib'

Hmm, that is indeed odd. It sounds like you Xcode installation may be broken. Did you upgrade your operating system recently? Do you have Xcode, the CLT package, or both installed? Cheers, - Ben