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:
<patch> component is less than
20000000. Development versions of CMake use the format:
<date> component is of format
<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:
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.
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.
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.
CMAKE_VERSION variable is defined by CMake 2.6.3 and higher. Earlier versions defined only the individual component variables.
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