travis: also build against Qt5 on OSX

diff --git a/.travis.yml b/.travis.yml
index e3dae6ac02b22bca7e124960dba22fd143001229..bbf2b09d54539ee0192368ecefcf483edb4340a1 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -60,6 +60,10 @@ matrix:
         - os: osx
           compiler: clang
           before_install: _travis/osx-install-dependencies
+        - os: osx
+          compiler: clang
+          env: QT_VERSION=5
+          before_install: _travis/osx-install-dependencies
 install:
     - _travis/configure
     - make -C build