Installation ============ The latest version of GIL can be downloaded from https://github.com/boostorg/gil. The GIL is a header-only library. Meaning, it consists of header files only, it does not require Boost to be built and it does not require any libraries to link against. .. note:: The exception to dependencies-free rule of GIL is the I/O extension which requires client libraries implementing popular image formats like libpng, libjpeg, etc. In order to use GIL, including ``boost/gil.hpp`` and telling your compiler where to find Boost and GIL headers should be sufficient for most projects.