We put in detection of the presence of /usr/bin/lipo from the Command Line Tools (CLT) for MacOS to make sure we could split universal binaries before unpacking. This works fine when CLT are installed but apparently, many tools exist on the file system as stubs before CLT is installed and so the simple existence test for /usr/bin/lipo succeeds when CLT are not installed. This patch instead detects the CLT install status and gives a more useful error message about how to install when not present.
We put in detection of the presence of /usr/bin/lipo from the Command Line Tools (CLT) for MacOS to make sure we could split universal binaries before unpacking. This works fine when CLT are installed but apparently, many tools exist on the file system as stubs before CLT is installed and so the simple existence test for /usr/bin/lipo succeeds when CLT are not installed. This patch instead detects the CLT install status and gives a more useful error message about how to install when not present.