Merge pull request #3378

b9c3416 Add protobuf-compiler dependency package for debian (Wladimir J. van der Laan)

Author: laanwj

doc/build-unix.md

@@ -93,7 +93,7 @@ are installed. Qt 4 is currently necessary to build the GUI.
 
 To build with Qt 4 you need the following:
 
-    apt-get install libqt4-dev libprotobuf-dev
+    apt-get install libqt4-dev libprotobuf-dev protobuf-compiler
 
 libqrencode (optional) can be installed with: