dnl Check for the type of the third argument of getsockname
AC_DEFUN(AC_CHECK_KSIZE_T,
[AC_MSG_CHECKING(for the third argument of getsockname)
AC_CACHE_VAL(ac_cv_ksize_t,
AC_LANG_SAVE
AC_LANG_CPLUSPLUS
[AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
socklen_t a=0;
getsockname(0,(struct sockaddr*)0, &a);
],
ac_cv_ksize_t=socklen_t,
ac_cv_ksize_t=)
if test -z "$ac_cv_ksize_t"; then
ac_safe_cxxflags="$CXXFLAGS"
if test "$GCC" = "yes"; then
  CXXFLAGS="-Werror $CXXFLAGS"
fi
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/socket.h>
],[
int a=0;
getsockname(0,(struct sockaddr*)0, &a);
],
ac_cv_ksize_t=int,
ac_cv_ksize_t=size_t)
CXXFLAGS="$ac_safe_cxxflags"
fi
AC_LANG_RESTORE
])

if test -z "$ac_cv_ksize_t"; then
  ac_cv_ksize_t=int
fi

AC_MSG_RESULT($ac_cv_ksize_t)
AC_DEFINE_UNQUOTED(ksize_t, $ac_cv_ksize_t,
      [Define the type of the third argument for getsockname]
)

])