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authorKitware Robot <kwrobot@kitware.com>2013-10-15 15:17:36 (GMT)
committerBrad King <brad.king@kitware.com>2013-10-15 18:12:03 (GMT)
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+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
+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 CPACK_PACKAGING_INSTALL_PREFIX as a
+prefix whereas with CPACK_SET_DESTDIR set, CPack will use
+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 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.