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.
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.
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Licensed under the BSD 3-clause License.