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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file LICENSE.rst or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
Findosg
-------
Finds the core OpenSceneGraph osg library (``libosg``).
.. note::
In most cases, it's recommended to use the :module:`FindOpenSceneGraph` module
instead, which automatically finds the osg core library along with its
required dependencies like OpenThreads:
.. code-block:: cmake
find_package(OpenSceneGraph)
This module is used internally by :module:`FindOpenSceneGraph` to find the osg
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, such
as explicitly finding osg library or bypassing automatic component detection:
.. code-block:: cmake
find_package(osg)
OpenSceneGraph core library headers are intended to be included in C++ project
source code as:
.. code-block:: c++
:caption: ``example.cxx``
#include <osg/PositionAttitudeTransform>
When working with the OpenSceneGraph toolkit, other libraries such as OpenGL may
also be required.
Result Variables
^^^^^^^^^^^^^^^^
This module defines the following variables:
``osg_FOUND``
Boolean indicating whether osg library is found. For backward
compatibility, the ``OSG_FOUND`` variable is also set to the same value.
``OSG_LIBRARIES``
The libraries needed to link against to use osg library.
``OSG_LIBRARY``
A result variable that is set to the same value as the ``OSG_LIBRARIES``
variable.
Cache Variables
^^^^^^^^^^^^^^^
The following cache variables may also be set:
``OSG_INCLUDE_DIR``
The include directory containing headers needed to use osg library.
``OSG_LIBRARY_DEBUG``
The path to the osg debug library.
Hints
^^^^^
This module accepts the following variables:
``OSGDIR``
Environment variable that can be set to help locate the OpenSceneGraph
toolkit, including its osg 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=$OSGDIR``.
Examples
^^^^^^^^
Finding the osg library explicitly with this module and creating an interface
:ref:`imported target <Imported Targets>` that encapsulates its usage
requirements for linking it to a project target:
.. code-block:: cmake
find_package(osg)
if(osg_FOUND AND NOT TARGET osg::osg)
add_library(osg::osg INTERFACE IMPORTED)
set_target_properties(
osg::osg
PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES "${OSG_INCLUDE_DIR}"
INTERFACE_LINK_LIBRARIES "${OSG_LIBRARIES}"
)
endif()
target_link_libraries(example PRIVATE osg::osg)
See Also
^^^^^^^^
* The :module:`FindOpenSceneGraph` module to find OpenSceneGraph toolkit.
#]=======================================================================]
# Created by Eric Wing.
include(${CMAKE_CURRENT_LIST_DIR}/Findosg_functions.cmake)
OSG_FIND_PATH (OSG osg/PositionAttitudeTransform)
OSG_FIND_LIBRARY(OSG osg)
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(osg DEFAULT_MSG OSG_LIBRARY OSG_INCLUDE_DIR)
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