anchor.diff:      harfbuzz \
       cppunit \
       glew \
  +    openssl \
       \
       mdds \
       glm \
  
positive.code:     --with-system-harfbuzz \
      --with-system-cppunit \
      --with-system-glew \
      \
      --with-system-glm \
      --with-system-mdds \
  
negative.code:     --with-system-libpagemaker \
      --with-system-libodfgen \
      --with-system-libgltf \
      --with-system-libexttextcat \
  "
  
  do_configure() {
  