+# sys_select_h.m4 serial 1
+dnl Copyright (C) 2006 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl Adapted from arpa_inet.m4, written by Simon Josefsson.
+
+AC_DEFUN([gl_HEADER_SYS_SELECT],
+[
+ AC_CHECK_HEADERS_ONCE([sys/select.h])
+ if test $ac_cv_header_sys_select_h = yes; then
+ SYS_SELECT_H=''
+ else
+ SYS_SELECT_H='sys/select.h'
+ fi
+ AC_SUBST(SYS_SELECT_H)
+])