DCMTK

The following configure options (Autoconf), which enable/disable an optional feature

  --enable-threads=TYPE   compile with MT support (posix/solaris/auto=default)
  --disable-threads       compile without MT support

are mapped to the macro WITH_THREADS (instead of ENABLE_THREADS). The CMake option is even called DCMTK_WITH_THREADS (although it enables a feature and not an external package).

Also the naming convention of the C++11 option/macro is not consistent with the rest of the DCMTK: e.g. the CMake variable/option is called DCMTK_USE_CXX11_STL.