1: dnl [SK] this is taken from the Autoconf Macro Archive, http://ac-archive.sourceforge.net/
    2: dnl It is licenced under GPL2 with the exception same as other autoconf-related
    3: dnl scripts.  I stripped '$' around Id signature to prevent my checking in
    4: dnl alters it.
    5: 
    6: dnl @synopsis TYPE_SOCKLEN_T
    7: dnl
    8: dnl Check whether sys/socket.h defines type socklen_t. Please note
    9: dnl that some systems require sys/types.h to be included before
   10: dnl sys/socket.h can be compiled.
   11: dnl
   12: dnl @version Id: type_socklen_t.m4,v 1.2 2005/01/11 04:18:04 guidod Exp 
   13: dnl @author Lars Brinkhoff <lars@nocrew.org>
   14: dnl
   15: AC_DEFUN([TYPE_SOCKLEN_T],
   16: [AC_CACHE_CHECK([for socklen_t], ac_cv_type_socklen_t,
   17: [
   18:   AC_TRY_COMPILE(
   19:   [#include <sys/types.h>
   20:    #include <sys/socket.h>],
   21:   [socklen_t len = 42; return 0;],
   22:   ac_cv_type_socklen_t=yes,
   23:   ac_cv_type_socklen_t=no)
   24: ])
   25:   if test $ac_cv_type_socklen_t != yes; then
   26:     AC_DEFINE(socklen_t, int, [Substitute for socklen_t])
   27:   fi
   28: ])