Use of GNU statement expression extension

Hello, hello,

I'd like to rewrite some of my old side-effect macros in a more modern (C99/C11) way using compound statements, such as this:

#define MIN(x,y)    ({ __auto_type __x = (x); __auto_type __y = (y); __x < __y ? __x : __y; })

It compiles fine with gcc, but Clang used by CVI gives me the error mentioned in the title. Apparently, all I need to do is to add -Wno-gnu, but I don't see where I can add compiler-specific options.

I also tried #pragma clang diagnostic ignored "-Wno-gnu" without success