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Diffstat (limited to 'share/cmake-3.17/Help/variable/CPACK_SET_DESTDIR.rst')
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1 files changed, 31 insertions, 0 deletions
diff --git a/share/cmake-3.17/Help/variable/CPACK_SET_DESTDIR.rst b/share/cmake-3.17/Help/variable/CPACK_SET_DESTDIR.rst new file mode 100644 index 0000000..27fd355 --- /dev/null +++ b/share/cmake-3.17/Help/variable/CPACK_SET_DESTDIR.rst @@ -0,0 +1,31 @@ +CPACK_SET_DESTDIR +----------------- + +Boolean toggle to make CPack use ``DESTDIR`` mechanism when packaging. + +``DESTDIR`` means DESTination DIRectory. It is commonly used by makefile +users in order to install software at non-default location. It is a +basic relocation mechanism that should not be used on Windows (see +:variable:`CMAKE_INSTALL_PREFIX` documentation). It is usually invoked like +this: + +:: + + make DESTDIR=/home/john install + +which will install the concerned software using the installation +prefix, e.g. ``/usr/local`` prepended with the ``DESTDIR`` value which +finally gives ``/home/john/usr/local``. When preparing a package, CPack +first installs the items to be packaged in a local (to the build tree) +directory by using the same ``DESTDIR`` mechanism. Nevertheless, if +``CPACK_SET_DESTDIR`` is set then CPack will set ``DESTDIR`` before doing the +local install. The most noticeable difference is that without +``CPACK_SET_DESTDIR``, CPack uses :variable:`CPACK_PACKAGING_INSTALL_PREFIX` +as a prefix whereas with ``CPACK_SET_DESTDIR`` set, CPack will use +:variable:`CMAKE_INSTALL_PREFIX` as a prefix. + +Manually setting ``CPACK_SET_DESTDIR`` may help (or simply be necessary) +if some install rules uses absolute ``DESTINATION`` (see CMake +:command:`install` command). However, starting with CPack/CMake 2.8.3 RPM +and DEB installers tries to handle ``DESTDIR`` automatically so that it is +seldom necessary for the user to set it. |