dnl Check for declaration of sys_errlist in one of stdio.h and errno.h.
dnl Declaration of sys_errlist on BSD4.4 interferes with our declaration.
dnl Reported by Keith Bostic.
AC_DEFUN([CF_SYS_ERRLIST],
[
AC_MSG_CHECKING([declaration of sys_errlist])
AC_CACHE_VAL(cf_cv_dcl_sys_errlist,[
    AC_TRY_COMPILE([
#include <stdio.h>
#include <sys/types.h>
#include <errno.h> ],
    [char *c = (char *) *sys_errlist],
    [cf_cv_dcl_sys_errlist=yes],
    [cf_cv_dcl_sys_errlist=no])])
AC_MSG_RESULT($cf_cv_dcl_sys_errlist)
test $cf_cv_dcl_sys_errlist = no || AC_DEFINE([DECL_SYS_ERRLIST],1,[Define when sys_errlist is defined in the standard include files])
])dnl
dnl