#include <string.h>
/* config.h must not be in quotes:
* https://gcc.gnu.org/onlinedocs/cpp/Search-Path.html
*/
#include <config.h>
#ifdef SHOULD_BE_UNDEF
#error "FAIL!"
#endif
int main(void) {
#ifndef BE_TRUE
return 1;
#else
return strcmp(MESSAGE, "mystring");
}