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Improve formatting, primarily by: * Adding links to relevant commands, properties, generators, and so on. * Converting code, symbols, paths, and so on to fixed-width fonts. * Hard wrapping lines to 80 characters or less.
32 lines
1.4 KiB
ReStructuredText
32 lines
1.4 KiB
ReStructuredText
CPACK_SET_DESTDIR
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-----------------
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Boolean toggle to make CPack use ``DESTDIR`` mechanism when packaging.
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``DESTDIR`` means DESTination DIRectory. It is commonly used by makefile
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users in order to install software at non-default location. It is a
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basic relocation mechanism that should not be used on Windows (see
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:variable:`CMAKE_INSTALL_PREFIX` documentation). It is usually invoked like
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this:
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::
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make DESTDIR=/home/john install
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which will install the concerned software using the installation
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prefix, e.g. ``/usr/local`` prepended with the ``DESTDIR`` value which
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finally gives ``/home/john/usr/local``. When preparing a package, CPack
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first installs the items to be packaged in a local (to the build tree)
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directory by using the same ``DESTDIR`` mechanism. Nevertheless, if
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``CPACK_SET_DESTDIR`` is set then CPack will set ``DESTDIR`` before doing the
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local install. The most noticeable difference is that without
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``CPACK_SET_DESTDIR``, CPack uses :variable:`CPACK_PACKAGING_INSTALL_PREFIX`
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as a prefix whereas with ``CPACK_SET_DESTDIR`` set, CPack will use
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:variable:`CMAKE_INSTALL_PREFIX` as a prefix.
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Manually setting ``CPACK_SET_DESTDIR`` may help (or simply be necessary)
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if some install rules uses absolute ``DESTINATION`` (see CMake
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:command:`install` command). However, starting with CPack/CMake 2.8.3 RPM
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and DEB installers tries to handle ``DESTDIR`` automatically so that it is
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seldom necessary for the user to set it.
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