__FreeBSD__       455 src/ftdm_threadmutex.c #elif defined(__linux__) || defined(__FreeBSD__)
__FreeBSD__        42 src/include/ftdm_declare.h #if !defined(_XOPEN_SOURCE) && !defined(__FreeBSD__)
__FreeBSD__        40 src/include/private/ftdm_core.h #if !defined(_XOPEN_SOURCE) && !defined(__FreeBSD__)