ITK/Release 4/Modularization/Add an external module (external module)

An external module is distributed outside the ITK main repository, but it could be built into ITK as a module once downloaded into the local copy of ITK source tree.

The organization of an external module should be the same as an internal module: Add a module(internal module)

To build an external module, users could download and put it into a local copy of ITK source tree under: "ITK/Modules/External/". Then simply rerun the CMake step to configure the new external module together with other enabled ITK modules.

An example is demonstrated in the Lesion Sizing Toolkit:Lesion Sizing Toolkit Wiki