Most likely, you haven't specified the dummy audio api via compiler defines. See https://github.com/libpd/libpd/wiki/libpd#build-settings

On Aug 26, 2013, at 6:00 AM, pd-list-request@iem.at wrote:

From: Фывапр Олджэвич <tofuckof@inbox.ru>
Subject: [PD] libPD : " unknown audio API specified " - iOS or PD error ?
Date: August 26, 2013 4:32:18 AM EDT
To: pd-list@iem.at <pd-list@iem.at>, Hans-Christoph Steiner <hans@at.or.at>
Reply-To: Фывапр Олджэвич <tofuckof@inbox.ru>


Hi List and LibPD developers !

Testing an iOS app with LibPD we get: " unknown audio API specified "

Is it a PD patch problem or xCode ? or what can it be ? the Pd-patch works well in Vanilla. 

any advice please 

thanks !

--------
Dan Wilcox
@danomatika