g++/clang ultra fast parse but not compile mode?

Question

Is there some ultra fast "syntax check my code, but don't compile mode" for g++/clang? Where the only goal is to just check if the code I have is valid C++ code?

Answer 1

-fsyntax-only for GCC, this should probably work for Clang as well since they emulate GCC's command line options. Whether or not it's significantly faster, you'll have to time.