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.
92 lines
3.2 KiB
92 lines
3.2 KiB
set
|
|
---
|
|
|
|
Set a normal, cache, or environment variable to a given value.
|
|
See the :ref:`cmake-language(7) variables <CMake Language Variables>`
|
|
documentation for the scopes and interaction of normal variables
|
|
and cache entries.
|
|
|
|
Signatures of this command that specify a ``<value>...`` placeholder
|
|
expect zero or more arguments. Multiple arguments will be joined as
|
|
a :ref:`;-list <CMake Language Lists>` to form the actual variable
|
|
value to be set. Zero arguments will cause normal variables to be
|
|
unset. See the :command:`unset` command to unset variables explicitly.
|
|
|
|
Set Normal Variable
|
|
^^^^^^^^^^^^^^^^^^^
|
|
|
|
::
|
|
|
|
set(<variable> <value>... [PARENT_SCOPE])
|
|
|
|
Set the given ``<variable>`` in the current function or directory scope.
|
|
|
|
If the ``PARENT_SCOPE`` option is given the variable will be set in
|
|
the scope above the current scope. Each new directory or function
|
|
creates a new scope. This command will set the value of a variable
|
|
into the parent directory or calling function (whichever is applicable
|
|
to the case at hand). The previous state of the variable's value stays the
|
|
same in the current scope (e.g., if it was undefined before, it is still
|
|
undefined and if it had a value, it is still that value).
|
|
|
|
Set Cache Entry
|
|
^^^^^^^^^^^^^^^
|
|
|
|
::
|
|
|
|
set(<variable> <value>... CACHE <type> <docstring> [FORCE])
|
|
|
|
Set the given cache ``<variable>`` (cache entry). Since cache entries
|
|
are meant to provide user-settable values this does not overwrite
|
|
existing cache entries by default. Use the ``FORCE`` option to
|
|
overwrite existing entries.
|
|
|
|
The ``<type>`` must be specified as one of:
|
|
|
|
``BOOL``
|
|
Boolean ``ON/OFF`` value. :manual:`cmake-gui(1)` offers a checkbox.
|
|
|
|
``FILEPATH``
|
|
Path to a file on disk. :manual:`cmake-gui(1)` offers a file dialog.
|
|
|
|
``PATH``
|
|
Path to a directory on disk. :manual:`cmake-gui(1)` offers a file dialog.
|
|
|
|
``STRING``
|
|
A line of text. :manual:`cmake-gui(1)` offers a text field or a
|
|
drop-down selection if the :prop_cache:`STRINGS` cache entry
|
|
property is set.
|
|
|
|
``INTERNAL``
|
|
A line of text. :manual:`cmake-gui(1)` does not show internal entries.
|
|
They may be used to store variables persistently across runs.
|
|
Use of this type implies ``FORCE``.
|
|
|
|
The ``<docstring>`` must be specified as a line of text providing
|
|
a quick summary of the option for presentation to :manual:`cmake-gui(1)`
|
|
users.
|
|
|
|
If the cache entry does not exist prior to the call or the ``FORCE``
|
|
option is given then the cache entry will be set to the given value.
|
|
Furthermore, any normal variable binding in the current scope will
|
|
be removed to expose the newly cached value to any immediately
|
|
following evaluation.
|
|
|
|
It is possible for the cache entry to exist prior to the call but
|
|
have no type set if it was created on the :manual:`cmake(1)` command
|
|
line by a user through the ``-D<var>=<value>`` option without
|
|
specifying a type. In this case the ``set`` command will add the
|
|
type. Furthermore, if the ``<type>`` is ``PATH`` or ``FILEPATH``
|
|
and the ``<value>`` provided on the command line is a relative path,
|
|
then the ``set`` command will treat the path as relative to the
|
|
current working directory and convert it to an absolute path.
|
|
|
|
Set Environment Variable
|
|
^^^^^^^^^^^^^^^^^^^^^^^^
|
|
|
|
::
|
|
|
|
set(ENV{<variable>} <value>...)
|
|
|
|
Set the current process environment ``<variable>`` to the given value.
|