Check if AWK supports getline function. If successful execute ACTION-IF-SUCCESS otherwise ACTION-IF-FAILURE.
This work is heavily based upon testawk.sh script by Heiner Steven. You should find his script (and related works) at <http://www.shelldorado.com/articles/awkcompat.html>. Thanks to Alessandro Massignan for his suggestions and extensive nawk tests on FreeBSD.
Download the latest version of ax_check_awk_getline.m4 or browse the macro’s revision history.
Copyright © 2009 Francesco Salvestrini 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.