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