You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
1.8 KiB
38 lines
1.8 KiB
3 years ago
|
CMAKE_INSTALL_MODE
|
||
|
|
------------------
|
||
|
|
|
||
|
|
.. versionadded:: 3.22
|
||
|
|
|
||
|
|
.. include:: ENV_VAR.txt
|
||
|
|
|
||
|
|
The ``CMAKE_INSTALL_MODE`` environment variable allows users to operate
|
||
|
|
CMake in an alternate mode of :command:`file(INSTALL)` and :command:`install()`.
|
||
|
|
|
||
|
|
The default behavior for an installation is to copy a source file from a
|
||
|
|
source directory into a destination directory. This environment variable
|
||
|
|
however allows the user to override this behavior, causing CMake to create
|
||
|
|
symbolic links instead.
|
||
|
|
|
||
|
|
.. note::
|
||
|
|
A symbolic link consists of a reference file path rather than contents of its own,
|
||
|
|
hence there are two ways to express the relation, either by a relative or an absolute path.
|
||
|
|
|
||
|
|
The following values are allowed for ``CMAKE_INSTALL_MODE``:
|
||
|
|
|
||
|
|
* empty, unset or ``COPY``: default behavior, duplicate the file at its destination
|
||
|
|
* ``ABS_SYMLINK``: create an *absolute* symbolic link to the source file at the destination *or fail*
|
||
|
|
* ``ABS_SYMLINK_OR_COPY``: like ``ABS_SYMLINK`` but silently copy on error
|
||
|
|
* ``REL_SYMLINK``: create an *relative* symbolic link to the source file at the destination *or fail*
|
||
|
|
* ``REL_SYMLINK_OR_COPY``: like ``REL_SYMLINK`` but silently copy on error
|
||
|
|
* ``SYMLINK``: try as if through ``REL_SYMLINK`` and fall back to ``ABS_SYMLINK`` if the referenced
|
||
|
|
file cannot be expressed using a relative path. Fail on error.
|
||
|
|
* ``SYMLINK_OR_COPY``: like ``SYMLINK`` but silently copy on error
|
||
|
|
|
||
|
|
Installing symbolic links rather than copying files can help conserve storage space because files do
|
||
|
|
not have to be duplicated on disk. However, modifications applied to the source immediately affects
|
||
|
|
the symbolic link and vice versa. *Use with caution*.
|
||
|
|
|
||
|
|
.. note:: ``CMAKE_INSTALL_MODE`` only affects files, *not* directories.
|
||
|
|
|
||
|
|
.. note:: Symbolic links are not available on all platforms.
|