FindosgViewer

Finds the osgViewer library from the OpenSceneGraph toolkit.

Note

In most cases, it's recommended to use the FindOpenSceneGraph module instead and list osgViewer as a component. This will automatically handle dependencies such as the OpenThreads and core osg libraries:

find_package(OpenSceneGraph COMPONENTS osgViewer)

This module is used internally by FindOpenSceneGraph to find the osgViewer library. It is not intended to be included directly during typical use of the 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:

find_package(osgViewer)

OpenSceneGraph and osgViewer headers are intended to be included in C++ project source code as:

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: Boolean indicating whether the osgViewer library of the OpenSceneGraph toolkit is found. For backward compatibility, the OSGVIEWER_FOUND variable is also set to the same value.
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.

Examples

Finding osgViewer explicitly with this module and creating an interface imported target that encapsulates its usage requirements for linking it to a project target:

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)