If you type git or gcc in Terminal, it may not work yet. You need to tell the system where Xcode is.
The last version of Xcode compatible with is Xcode 10.1 . While the Mac App Store typically only offers the latest version, you can download Xcode 10.1 directly from the Apple Developer More Downloads page . Compatibility & Requirements Version: Xcode 10.1. download xcode for mac os high sierra 10136 work
. Because the Mac App Store typically only offers the latest version of Xcode (which now requires much newer macOS versions), you must download the specific installer from Apple's developer archives. Apple Developer Steps to Download and Install Xcode 10.1 If you type git or gcc in Terminal, it may not work yet
