| 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. |