HAVE_DLOPEN        74 dln.c          # if defined(HAVE_DLOPEN)
HAVE_DLOPEN        88 dln.c          #if defined(HAVE_DLOPEN) && !defined(USE_DLN_A_OUT) && !defined(_AIX) && !defined(MACOSX_DYLD) && !defined(_UNICOSMP)
HAVE_DLOPEN        61 ext/tk/stubs.c #elif defined HAVE_DLOPEN