CMAKE_CONFIGURATION_TYPES
-------------------------

Specifies the available build types on multi-config generators.

This specifies what build types (configurations) will be available
such as ``Debug``, ``Release``, ``RelWithDebInfo`` etc.  This has reasonable
defaults on most platforms, but can be extended to provide other build
types.

See :variable:`CMAKE_BUILD_TYPE` for specifying the configuration with
single-config generators.
