--- Portfile.orig	2013-07-25 05:33:58.000000000 +0200
+++ Portfile	2013-07-25 12:55:38.000000000 +0200
@@ -40,8 +40,10 @@
     port:fftw-3 \
     port:vlfeat \
     port:libsvm \
-    port:qt4-mac \
-    port:opencv
+    port:qt4-mac
+
+depends_build-append \
+                    port:pkgconfig
 
 configure.args      -DCMAKE_BUILD_TYPE=Release -DBOB_VERSION=${version} -DBOB_SOVERSION=${soversion}