Check whether the GNU ADNS library available from http://www.chiark.greenend.org.uk/~ian/adns/ is installed on this system. The test is known to work with version 1.4 (or later). If the library is found, the flags necessary to link it are added to $LIBS.
Download the latest version of ax_have_adns.m4 or browse the macro’s revision history.
Copyright © 2008 Peter Simons firstname.lastname@example.org
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