Not all systems have pathfind(3). See if we need to substitute. To make this work, you have to do horrible things. See the doc for AX_CHECK_STRCSPN.
Download the latest version of ax_check_pathfind.m4 or browse the macro’s revision history.
Copyright © 2008 Bruce Korb email@example.com
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. This file is offered as-is, without any warranty.