Project->New->C/C++->Clang++
add Project name and directory
click "OK"
Project Type: Executable, Source Type: C++
Next>
An Empty project, Next>
Choose Build with a user-maintained makefile or custom build command
Can't click Next>, it is greyed out
Same issue for the other 2 options as well (Build without a makefile, and build with an auto-generated)
I'm on Linux x64, CentOS 7.2, beta2