diff -r ef0373b55136 -r 758a864f9613 demos/spectrum/app/app.pro
--- a/demos/spectrum/app/app.pro	Fri Sep 17 08:34:18 2010 +0300
+++ b/demos/spectrum/app/app.pro	Mon Oct 04 01:19:32 2010 +0300
@@ -1,5 +1,7 @@
 include(../spectrum.pri)
 
+static: error(This application cannot be statically linked to the fftreal library)
+
 TEMPLATE = app
 
 TARGET = spectrum