Add matrix for shibboleth support on travis ci.

.travis.yml

@@ -5,10 +5,10 @@ matrix:
   include:
     - os: linux
       compiler: gcc
-      env: USE_QT5=1
+      env: BUILD_SHIBBOLETH_SUPPORT=ON
     - os: linux
-      compiler: clang
-      env: USE_QT5=1
+      compiler: gcc
+      env: BUILD_SHIBBOLETH_SUPPORT=OFF
   exclude:
     - os: osx
       compiler: gcc

scripts/ci-build.sh

@@ -9,7 +9,7 @@ if [ "$TRAVIS_OS_NAME" = "linux" ]; then
     set +e
     . /opt/qt56/bin/qt56-env.sh
     set -e
-    cmake -DBUILD_TESTING=on -DBUILD_SHIBBOLETH_SUPPORT=on .
+    cmake -DBUILD_TESTING=on -DBUILD_SHIBBOLETH_SUPPORT=$BUILD_SHIBBOLETH_SUPPORT .
     make -j8 VERBOSE=1
     make test VERBOSE=1
 elif [ "$TRAVIS_OS_NAME" = "osx" ]; then