anchor.diff:      rm -r spdlog-${SPDLOG} && \
       rm spdlog.tar.gz
   
  +RUN curl -o /root/cmake.tar.gz https://cmake.org/files/v3.10/cmake-${CMAKE}.tar.gz && \
  +	cd /root && \
  +    tar -zxvf cmake.tar.gz && \
  +    cd cmake-${CMAKE} && \
  +    cmake . && \
  +    make && \
  +    make install && \
  +    cd /root && \
  +    rm -r cmake-${CMAKE} && \
  +    rm cmake.tar.gz
  +
  +RUN update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-7 90
  +RUN update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-7 90
   RUN mkdir -p /app
   
   ADD . /app
  
positive.code: 
  RUN ACLOCAL_PATH="/usr/local/share/aclocal" && \
      export ACLOCAL_PATH && \
      curl -o /root/glibmm.tar.gz -SL https://github.com/GNOME/glibmm/archive/${GLIBMM}.tar.gz && \
      cd /root && \
      tar -zxvf glibmm.tar.gz && \
  
negative.code:   libtool \
    curl \
    libxml-parser-perl \
    git \
    g++-7
  
  ENV MMCOMMON=0.9.10 SIGC=2.9.1 GLIB=2.50.1 GLIBMM=2.50.1 GSTREAMER=1.10.0 GSTREAMERMM=1.10.0 SPDLOG=0.16.3 CMAKE=3.10.3
  
  RUN DEBIAN_FRONTEND=noninteractive apt-get install -y libffi-dev libmount-dev
  
  RUN curl -o /root/mm-common.tar.gz -SL https://github.com/GNOME/mm-common/archive/${MMCOMMON}.tar.gz && \
      cd /root && \
  