1dnl ###################################################################### 2dnl AF_UNSPEC checks 3AC_DEFUN([NTP_AF_UNSPEC], [ 4 5# We could do a cv check here, but is it worth it? 6 7AC_COMPILE_IFELSE( 8 [AC_LANG_PROGRAM( 9 [[ 10 #include <sys/socket.h> 11 #ifndef AF_UNSPEC 12 #include "Bletch: AF_UNSPEC is undefined!" 13 #endif 14 #if AF_UNSPEC != 0 15 #include "Bletch: AF_UNSPEC != 0" 16 #endif 17 ]], 18 [AC_MSG_NOTICE([AF_UNSPEC is zero, as expected.])], 19 [AC_MSG_ERROR([AF_UNSPEC is not zero on this platform!])] 20 )] 21)]) 22 23dnl ###################################################################### 24