obtain qt5.6 from the previous version

ci-scripts/osx/travis-build.sh

@@ -4,7 +4,7 @@ pushd thirdparty/tiff-4.0.3
 popd
 cd toonz && mkdir build && cd build
 cmake ../sources \
-      -DQT_PATH=/usr/local/Cellar/qt@5.5/5.5.1_1/lib/ \
+      -DQT_PATH=/usr/local/Cellar/qt5/5.6.1-1/lib/ \
       -DTIFF_INCLUDE_DIR=../../thirdparty/tiff-4.0.3/libtiff/ \
       -DSUPERLU_INCLUDE_DIR=../../thirdparty/superlu/SuperLU_4.1/include/
 make

ci-scripts/osx/travis-install.sh

@@ -1,5 +1,8 @@
 #!/bin/bash
 brew update
-brew install qt56 glew lz4 lzo libusb libmypaint
+brew install glew lz4 lzo libusb libmypaint
 brew tap tcr/tcr
 brew install clang-format
+# obtain qt5.6 from the previous version of the formula
+curl -O https://raw.githubusercontent.com/Homebrew/homebrew-core/fdfc724dd532345f5c6cdf47dc43e99654e6a5fd/Formula/qt5.rb
+brew install ./qt5.rb

toonz/sources/toonz/penciltestpopup.cpp

@@ -45,7 +45,9 @@
 #include <QCamera>
 #include <QCameraImageCapture>
 #include <QCameraViewfinderSettings>
+#ifdef MACOSX
 #include <QCameraViewfinder>
+#endif
 
 #include <QComboBox>
 #include <QPushButton>