make-macosx-app.sh does not compile ioq3, it’s a helper for make-macosx.sh and make-macosx-ub.sh.
“No ioquake3 binary architectures were found” means ioquake3 hasn’t been compiled yet. Use sh make-macosx.sh x86_64 to compile and create release x86_64 app bundle. Or run make ARCH=x86_64 before running make-macosx-app.sh release x86_64.
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