error.xcrun.clang

What happens

• CMake fatal error with message [hunter ** FATAL ERROR **] 'xcrun -f clang++' failed

What to do

• xcrun [1] is a part of Xcode environment. Probably xcode is broken or not installed at all. May be command line tools need to be installed also. After that, simply check that xcrun -f clang++ returns the full path to clang compiler. See also xcode-select [2].

[1]	https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man1/xcrun.1.html

[2]	https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man1/xcode-select.1.html