[Travis] debug

.travis.yml

@@ -15,6 +15,8 @@ env:
     - CTK_QT_VERSION=4
 
 before_install:
+  - which qmake
+  - qmake -version
   - sudo add-apt-repository --yes ppa:ubuntu-sdk-team/ppa
   - sudo apt-get update -qq
   - sudo apt-get install -y chrpath libqt4-dev qt4-dev-tools libvtk5-qt4-dev