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CMake/Modules/FindosgViewer.cmake
Peter Kokot 0fedf1592c Find*: Update *_FOUND variables
This marks all `<PACKAGENAME>_FOUND` result variables as deprecated
where possible (for `<PackageName>` find modules) to make it clearer
which variable to use.

In CMake 3.3, the FindPackageHandleStandardArgs module was refactored to
set both `<PackageName>_FOUND` and uppercase `<PACKAGENAME>_FOUND`
result variables to the same values. Before that, the FOUND_VAR argument
could be used to set the result variable.

* FindMatlab: Uppercased MATLAB_FOUND is not mentioned as it was never
  documented.
* Documentation for FindPythonInterp and FindPythonLibs modules synced
  accordingly to their deprecation (3.12 instead of 4.2).
* OPENGL_FOUND: deprecation version synced with other find modules.
* DevIL_FOUND was introduced in CMake 3.8. The uppercased variant not
  mentioned as it was previously never documented.

Fixes: #27242
2025-09-23 21:40:58 +02:00

134 lines
3.8 KiB
CMake

# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file LICENSE.rst or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindosgViewer
-------------
Finds the osgViewer library from the OpenSceneGraph toolkit.
.. note::
In most cases, it's recommended to use the :module:`FindOpenSceneGraph` module
instead and list osgViewer as a component. This will automatically handle
dependencies such as the OpenThreads and core osg libraries:
.. code-block:: cmake
find_package(OpenSceneGraph COMPONENTS osgViewer)
This module is used internally by :module:`FindOpenSceneGraph` to find the
osgViewer library. It is not intended to be included directly during typical
use of the :command:`find_package` command. However, it is available as a
standalone module for advanced use cases where finer control over detection is
needed. For example, to find the osgViewer explicitly or bypass automatic
component detection:
.. code-block:: cmake
find_package(osgViewer)
OpenSceneGraph and osgViewer headers are intended to be included in C++ project
source code as:
.. code-block:: c++
:caption: ``example.cxx``
#include <osg/PositionAttitudeTransform>
#include <osgViewer/Viewer>
// ...
When working with the OpenSceneGraph toolkit, other libraries such as OpenGL may
also be required.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``osgViewer_FOUND``
.. versionadded:: 3.3
Boolean indicating whether the osgViewer library of the OpenSceneGraph
toolkit was found.
``OSGVIEWER_LIBRARIES``
The libraries needed to link against to use osgViewer.
``OSGVIEWER_LIBRARY``
A result variable that is set to the same value as the ``OSGVIEWER_LIBRARIES``
variable.
Cache Variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``OSGVIEWER_INCLUDE_DIR``
The include directory containing headers needed to use osgViewer.
``OSGVIEWER_LIBRARY_DEBUG``
The path to the osgViewer debug library.
Hints
^^^^^
This module accepts the following variables:
``OSGDIR``
Environment variable that can be set to help locate the OpenSceneGraph
toolkit, including its osgViewer library, when installed in a custom
location. It should point to the OpenSceneGraph installation prefix used when
it was configured, built, and installed: ``./configure --prefix=$OSGDIR``.
Deprecated Variables
^^^^^^^^^^^^^^^^^^^^
The following variables are provided for backward compatibility:
``OSGVIEWER_FOUND``
.. deprecated:: 4.2
Use ``osgViewer_FOUND``, which has the same value.
Boolean indicating whether the osgViewer library of the OpenSceneGraph
toolkit was found.
Examples
^^^^^^^^
Finding osgViewer explicitly with this module and creating an interface
:ref:`imported target <Imported Targets>` that encapsulates its usage
requirements for linking it to a project target:
.. code-block:: cmake
find_package(osgViewer)
if(osgViewer_FOUND AND NOT TARGET osgViewer::osgViewer)
add_library(osgViewer::osgViewer INTERFACE IMPORTED)
set_target_properties(
osgViewer::osgViewer
PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${OSGVIEWER_INCLUDE_DIR}"
INTERFACE_LINK_LIBRARIES "${OSGVIEWER_LIBRARIES}"
)
endif()
target_link_libraries(example PRIVATE osgViewer::osgViewer)
See Also
^^^^^^^^
* The :module:`FindOpenSceneGraph` module to find OpenSceneGraph toolkit.
#]=======================================================================]
# Created by Eric Wing.
include(${CMAKE_CURRENT_LIST_DIR}/Findosg_functions.cmake)
OSG_FIND_PATH (OSGVIEWER osgViewer/Viewer)
OSG_FIND_LIBRARY(OSGVIEWER osgViewer)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(osgViewer DEFAULT_MSG
OSGVIEWER_LIBRARY OSGVIEWER_INCLUDE_DIR)