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|
cmake_command
-------------
Call meta-operations on CMake commands.
Synopsis
^^^^^^^^
.. parsed-literal::
cmake_command(`INVOKE`_ <command> [<args>...])
cmake_command(`EVAL`_ CODE <code>...)
Introduction
^^^^^^^^^^^^
This command will call meta-operations on built-in CMake commands or
those created via the :command:`macro` or :command:`function` commands.
``cmake_command`` does not introduce a new variable or policy scope.
Invoking Commands
^^^^^^^^^^^^^^^^^
.. _INVOKE:
.. code-block:: cmake
cmake_command(INVOKE <command> [<args>...])
Invokes the named ``<command>`` with the given arguments (if any).
For example, the code:
.. code-block:: cmake
set(message_command "message")
cmake_command(INVOKE ${message_command} STATUS "Hello World!")
is equivalent to
.. code-block:: cmake
message(STATUS "Hello World!")
Evaluating Code
^^^^^^^^^^^^^^^
.. _EVAL:
.. code-block:: cmake
cmake_command(EVAL CODE <code>...)
Evaluates the ``<code>...`` as CMake code.
For example, the code:
.. code-block:: cmake
set(A TRUE)
set(B TRUE)
set(C TRUE)
set(condition "(A AND B) OR C")
cmake_command(EVAL CODE "
if (${condition})
message(STATUS TRUE)
else()
message(STATUS FALSE)
endif()"
)
is equivalent to
.. code-block:: cmake
set(A TRUE)
set(B TRUE)
set(C TRUE)
set(condition "(A AND B) OR C")
file(WRITE ${CMAKE_CURRENT_BINARY_DIR}/eval.cmake "
if (${condition})
message(STATUS TRUE)
else()
message(STATUS FALSE)
endif()"
)
include(${CMAKE_CURRENT_BINARY_DIR}/eval.cmake)
|
