Below is the file 'modules/mux_pthr/modinfo.txt' from this revision. You can also download the file.
realname "Pthread Mutex" define MUTEX_PTHREAD load_on auto <add> mux_pthr.cpp mux_pthr.h </add> <libs> all!qnx,freebsd,openbsd,netbsd -> pthread </libs> <os> aix cygwin darwin freebsd hpux irix linux netbsd openbsd qnx solaris tru64 </os>