1 #if defined(__GNUC__) &&                                                      \
2   !(defined(__INTEL_COMPILER) || defined(__INTEL_LLVM_COMPILER))
3 void THIS_IS_GNU();
4 #endif
5 #ifdef __MINGW32__
6 void THIS_IS_MINGW();
7 #endif
8 #ifdef __CYGWIN__
9 void THIS_IS_CYGWIN();
10 #endif
11