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| In some situations, it's necessary to keep older versions of a program along with the newer. Here is a recipe for appending the version number to your install path:
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| <pre>
| | This page has moved [https://gitlab.kitware.com/cmake/community/wikis/doc/cmake/recipe/AppendVersionNumberToInstallpath here]. |
| IF(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
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| SET(ORIGINAL_INSTALL_PREFIX ${CMAKE_INSTALL_PREFIX} CACHE STRING "Default prefix path" FORCE)
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| ENDIF()
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| MARK_AS_ADVANCED(ORIGINAL_INSTALL_PREFIX)
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| IF( NOT( VERSION VERSION_EQUAL PROJECT_VERSION) )
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| SET(CMAKE_INSTALL_PREFIX "${ORIGINAL_INSTALL_PREFIX}-${VERSION}" CACHE STRING "Install path" FORCE)
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| SET(PROJECT_VERSION ${VERSION})
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| ENDIF()
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| </pre>
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| This ensures that the CMAKE_INSTALL_PREFIX is updated whenever the old version number and the new version number doesn't match. This does have some side-effects, such as situations where the user is customizing the CMAKE_INSTALL_PREFIX to some custom location. Such users would need to modify the ORIGINAL_INSTALL_PREFIX instead to ensure that the project is going to the desired place.
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| The CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT is necessary here because if it's missing, the path becomes recursive and will continue to append ${PROJECT_NAME}-${VERSION} to the path infinitely. The conditional ensures that it only does this once.
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| {{CMake/Template/Footer}}
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Latest revision as of 15:41, 30 April 2018
