VERSION

What version number is this target.

For shared libraries VERSION and SOVERSION can be used to specify the build version and API version respectively. When building or installing appropriate symlinks are created if the platform supports symlinks and the linker supports so-names. If only one of both is specified the missing is assumed to have the same version number. For executables VERSION can be used to specify the build version. When building or installing appropriate symlinks are created if the platform supports symlinks.

Windows Versions

For shared libraries and executables on Windows the VERSION attribute is parsed to extract a <major>.<minor> version number. These numbers are used as the image version of the binary.

Mach-O Versions

For shared libraries and executables on Mach-O systems (e.g. OS X, iOS), the SOVERSION property correspond to compatibility version and VERSION to current version. See the FRAMEWORK target property for an example. Versions of Mach-O binaries may be checked with the otool -L <binary> command.

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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.11/prop_tgt/VERSION.html