[Openmp-dev] OpenMP support in clang compiler

[Joachim Protze via Openmp-dev]

Hi all,

I wonder about the reason, that clang sets the _OPENMP macro to 201107 
when compiling with -fopenmp flag. I also found the flag 
-fopenmp-version=45 which changes the value of the macro to 201511. 
Unfortunately, I couldn't find information on this flag, especially 
whether this flag has other effects for the compiler.

Thanks,

Joachim

PS: I used this code for testing:

#include "stdio.h"
int main(){
   printf("%i\n", _OPENMP);
}