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- CMAKE_VERSION
- -------------
- The CMake version string as three non-negative integer components
- separated by ``.`` and possibly followed by ``-`` and other information.
- The first two components represent the feature level and the third
- component represents either a bug-fix level or development date.
- Release versions and release candidate versions of CMake use the format::
- <major>.<minor>.<patch>[-rc<n>]
- where the ``<patch>`` component is less than ``20000000``. Development
- versions of CMake use the format::
- <major>.<minor>.<date>[-<id>]
- where the ``<date>`` component is of format ``CCYYMMDD`` and ``<id>``
- may contain arbitrary text. This represents development as of a
- particular date following the ``<major>.<minor>`` feature release.
- Individual component values are also available in variables:
- * :variable:`CMAKE_MAJOR_VERSION`
- * :variable:`CMAKE_MINOR_VERSION`
- * :variable:`CMAKE_PATCH_VERSION`
- * :variable:`CMAKE_TWEAK_VERSION`
- Use the :command:`if` command ``VERSION_LESS``, ``VERSION_GREATER``,
- ``VERSION_EQUAL``, ``VERSION_LESS_EQUAL``, or ``VERSION_GREATER_EQUAL``
- operators to compare version string values against ``CMAKE_VERSION`` using a
- component-wise test. Version component values may be 10 or larger so do not
- attempt to compare version strings as floating-point numbers.
- .. note::
- CMake versions 2.8.2 through 2.8.12 used three components for the
- feature level. Release versions represented the bug-fix level in a
- fourth component, i.e. ``<major>.<minor>.<patch>[.<tweak>][-rc<n>]``.
- Development versions represented the development date in the fourth
- component, i.e. ``<major>.<minor>.<patch>.<date>[-<id>]``.
- CMake versions prior to 2.8.2 used three components for the
- feature level and had no bug-fix component. Release versions
- used an even-valued second component, i.e.
- ``<major>.<even-minor>.<patch>[-rc<n>]``. Development versions
- used an odd-valued second component with the development date as
- the third component, i.e. ``<major>.<odd-minor>.<date>``.
- The ``CMAKE_VERSION`` variable is defined by CMake 2.6.3 and higher.
- Earlier versions defined only the individual component variables.
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