__OpenBSD__       499 gc/include/gc.h #if (defined(__linux__) || defined(__NetBSD__) || defined(__OpenBSD__) \
__OpenBSD__        53 gc/include/private/gcconfig.h # if defined(__OpenBSD__)
__OpenBSD__       177 gc/include/private/gcconfig.h      && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__FreeBSD__)
__OpenBSD__       316 gc/include/private/gcconfig.h # if defined(__OpenBSD__) && (defined(i386) || defined(__i386__))