diff -aur package.pristine/swac-record.pro package.new/swac-record.pro
--- package.pristine/swac-record.pro	2016-05-31 19:53:24.499749450 +0200
+++ package.new/swac-record.pro	2016-05-31 19:53:36.092999589 +0200
@@ -44,7 +44,7 @@
 RESOURCES = swac-record.qrc
 
 CONFIG += link_pkgconfig
-PKGCONFIG = portaudio-2.0 flac++
+PKGCONFIG = portaudio-2.0 flac++ flac
 
 target.path=/usr/local/bin/$$TARGET
 INSTALLS += target