message: simplify travis build
diff: @@ -41,25 +41,16 @@ env:
  - OPENCV_VERSION=3.4.6
  before_script:
  - - |
  - if [ ! -e /tmp/opencv/opencv-$OPENCV_VERSION/release/unix-install ]
  - then
  - mkdir -p /tmp/opencv
  - cd /tmp/opencv
  - rm -rf opencv-$OPENCV_VERSION
  - wget -q https://github.com/opencv/opencv/archive/$OPENCV_VERSION.zip
  - unzip -q $OPENCV_VERSION.zip
  - cd opencv-$OPENCV_VERSION
  - mkdir release install
  - cd release
  - Atlas_ROOT_DIR=/usr/include/ cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_PERF_TESTS=OFF -DBUILD_TESTS=OFF -DINSTALL_TESTS=OFF -DBUILD_DOCS=OFF -DBUILD_EXAMPLES=OFF -DBUILD_opencv_apps= -DWITH_IPP=OFF -DPYTHON_EXECUTABLE=OFF -DINSTALL_PYTHON_EXAMPLES=OFF -DWITH_LAPACK=ON -DWITH_EIGEN=ON -DBUILD_SHARED_LIBS=ON -DWITH_TBB=ON -DOPENCV_ENABLE_NONFREE=ON -DCMAKE_INSTALL_PREFIX=/usr ..
  - sudo make -j4 install
  - fi
  - - tree /tmp/opencv/opencv-$OPENCV_VERSION/release
  + - wget -q -O- https://github.com/opencv/opencv/archive/$OPENCV_VERSION.tar.gz | tar -xzC /home/travis/build
  + - mkdir -p /home/travis/build/opencv-$OPENCV_VERSION-build
  + - pushd /home/travis/build/opencv-$OPENCV_VERSION-build
  + - Atlas_ROOT_DIR=/usr/include/ cmake -DCMAKE_BUILD_TYPE=Release -DBUILD_PERF_TESTS=OFF -DBUILD_TESTS=OFF -DINSTALL_TESTS=OFF -DBUILD_DOCS=OFF -DBUILD_EXAMPLES=OFF -DBUILD_opencv_apps= -DWITH_IPP=OFF -DPYTHON_EXECUTABLE=OFF -DINSTALL_PYTHON_EXAMPLES=OFF -DWITH_LAPACK=ON -DWITH_EIGEN=ON -DBUILD_SHARED_LIBS=ON -DWITH_TBB=ON -DOPENCV_ENABLE_NONFREE=ON -DCMAKE_INSTALL_PREFIX=/usr /home/travis/build/opencv-$OPENCV_VERSION
  + - sudo make -j4 install
  + - tree .
  + - popd
  - pkg-config --cflags opencv
  - pkg-config --libs opencv
  - gcc --version
  - - cd /home/travis/build/twistedfall/opencv-rust
  matrix:
  allow_failures:
  