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# Distributed under the OSI-approved BSD 3-Clause License. See accompanying
# file Copyright.txt or https://cmake.org/licensing for details.
#[=======================================================================[.rst:
FindOpenSceneGraph
------------------
Find OpenSceneGraph (3D graphics application programming interface)
This module searches for the OpenSceneGraph core "osg" library as well
as :module:`FindOpenThreads`, and whatever additional ``COMPONENTS``
(nodekits) that you specify.
::
See http://www.openscenegraph.org
NOTE: To use this module effectively you must either require ``CMake >=
2.6.3`` with :command:`cmake_minimum_required(VERSION 2.6.3)` or download
and place :module:`FindOpenThreads`, :module:`Findosg` functions,
:module:`Findosg` and ``Find<etc>.cmake`` files into your
:variable:`CMAKE_MODULE_PATH`.
==================================
This module accepts the following variables (note mixed case)
::
OpenSceneGraph_DEBUG - Enable debugging output
::
OpenSceneGraph_MARK_AS_ADVANCED - Mark cache variables as advanced
automatically
The following environment variables are also respected for finding the
OSG and it's various components. :variable:`CMAKE_PREFIX_PATH` can also be
used for this (see :command:`find_library` CMake documentation).
``<MODULE>_DIR``
(where ``MODULE`` is of the form "OSGVOLUME" and there is
a :module:`FindosgVolume`.cmake` file)
``OSG_DIR``
..
``OSGDIR``
..
``OSG_ROOT``
..
[CMake 2.8.10]: The CMake variable ``OSG_DIR`` can now be used as well to
influence detection, instead of needing to specify an environment
variable.
This module defines the following output variables:
::
OPENSCENEGRAPH_FOUND - Was the OSG and all of the specified components found?
::
OPENSCENEGRAPH_VERSION - The version of the OSG which was found
::
OPENSCENEGRAPH_INCLUDE_DIRS - Where to find the headers
::
OPENSCENEGRAPH_LIBRARIES - The OSG libraries
================================== Example Usage:
::
find_package(OpenSceneGraph 2.0.0 REQUIRED osgDB osgUtil)
# libOpenThreads & libosg automatically searched
include_directories(${OPENSCENEGRAPH_INCLUDE_DIRS})
::
add_executable(foo foo.cc)
target_link_libraries(foo ${OPENSCENEGRAPH_LIBRARIES})
#]=======================================================================]
#
# Naming convention:
# Local variables of the form _osg_foo
# Input variables of the form OpenSceneGraph_FOO
# Output variables of the form OPENSCENEGRAPH_FOO
#
include(${CMAKE_CURRENT_LIST_DIR}/Findosg_functions.cmake)
set(_osg_modules_to_process)
foreach(_osg_component ${OpenSceneGraph_FIND_COMPONENTS})
list(APPEND _osg_modules_to_process ${_osg_component})
endforeach()
list(APPEND _osg_modules_to_process "osg" "OpenThreads")
list(REMOVE_DUPLICATES _osg_modules_to_process)
if(OpenSceneGraph_DEBUG)
message(STATUS "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
"Components = ${_osg_modules_to_process}")
endif()
#
# First we need to find and parse osg/Version
#
OSG_FIND_PATH(OSG osg/Version)
if(OpenSceneGraph_MARK_AS_ADVANCED)
OSG_MARK_AS_ADVANCED(OSG)
endif()
# Try to ascertain the version...
if(OSG_INCLUDE_DIR)
if(OpenSceneGraph_DEBUG)
message(STATUS "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
"Detected OSG_INCLUDE_DIR = ${OSG_INCLUDE_DIR}")
endif()
set(_osg_Version_file "${OSG_INCLUDE_DIR}/osg/Version")
if("${OSG_INCLUDE_DIR}" MATCHES "\\.framework$" AND NOT EXISTS "${_osg_Version_file}")
set(_osg_Version_file "${OSG_INCLUDE_DIR}/Headers/Version")
endif()
if(EXISTS "${_osg_Version_file}")
file(STRINGS "${_osg_Version_file}" _osg_Version_contents
REGEX "#define (OSG_VERSION_[A-Z]+|OPENSCENEGRAPH_[A-Z]+_VERSION)[ \t]+[0-9]+")
else()
set(_osg_Version_contents "unknown")
endif()
string(REGEX MATCH ".*#define OSG_VERSION_MAJOR[ \t]+[0-9]+.*"
_osg_old_defines "${_osg_Version_contents}")
string(REGEX MATCH ".*#define OPENSCENEGRAPH_MAJOR_VERSION[ \t]+[0-9]+.*"
_osg_new_defines "${_osg_Version_contents}")
if(_osg_old_defines)
string(REGEX REPLACE ".*#define OSG_VERSION_MAJOR[ \t]+([0-9]+).*"
"\\1" _osg_VERSION_MAJOR ${_osg_Version_contents})
string(REGEX REPLACE ".*#define OSG_VERSION_MINOR[ \t]+([0-9]+).*"
"\\1" _osg_VERSION_MINOR ${_osg_Version_contents})
string(REGEX REPLACE ".*#define OSG_VERSION_PATCH[ \t]+([0-9]+).*"
"\\1" _osg_VERSION_PATCH ${_osg_Version_contents})
elseif(_osg_new_defines)
string(REGEX REPLACE ".*#define OPENSCENEGRAPH_MAJOR_VERSION[ \t]+([0-9]+).*"
"\\1" _osg_VERSION_MAJOR ${_osg_Version_contents})
string(REGEX REPLACE ".*#define OPENSCENEGRAPH_MINOR_VERSION[ \t]+([0-9]+).*"
"\\1" _osg_VERSION_MINOR ${_osg_Version_contents})
string(REGEX REPLACE ".*#define OPENSCENEGRAPH_PATCH_VERSION[ \t]+([0-9]+).*"
"\\1" _osg_VERSION_PATCH ${_osg_Version_contents})
else()
message(WARNING "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
"Failed to parse version number, please report this as a bug")
endif()
unset(_osg_Version_contents)
set(OPENSCENEGRAPH_VERSION "${_osg_VERSION_MAJOR}.${_osg_VERSION_MINOR}.${_osg_VERSION_PATCH}"
CACHE INTERNAL "The version of OSG which was detected")
if(OpenSceneGraph_DEBUG)
message(STATUS "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
"Detected version ${OPENSCENEGRAPH_VERSION}")
endif()
endif()
set(_osg_quiet)
if(OpenSceneGraph_FIND_QUIETLY)
set(_osg_quiet "QUIET")
endif()
#
# Here we call find_package() on all of the components
#
foreach(_osg_module ${_osg_modules_to_process})
if(OpenSceneGraph_DEBUG)
message(STATUS "[ FindOpenSceneGraph.cmake:${CMAKE_CURRENT_LIST_LINE} ] "
"Calling find_package(${_osg_module} ${_osg_required} ${_osg_quiet})")
endif()
find_package(${_osg_module} ${_osg_quiet})
string(TOUPPER ${_osg_module} _osg_module_UC)
# append to list if module was found OR is required
if( ${_osg_module_UC}_FOUND OR OpenSceneGraph_FIND_REQUIRED )
list(APPEND OPENSCENEGRAPH_INCLUDE_DIR ${${_osg_module_UC}_INCLUDE_DIR})
list(APPEND OPENSCENEGRAPH_LIBRARIES ${${_osg_module_UC}_LIBRARIES})
endif()
if(OpenSceneGraph_MARK_AS_ADVANCED)
OSG_MARK_AS_ADVANCED(${_osg_module})
endif()
endforeach()
if(OPENSCENEGRAPH_INCLUDE_DIR)
list(REMOVE_DUPLICATES OPENSCENEGRAPH_INCLUDE_DIR)
endif()
#
# Check each module to see if it's found
#
set(_osg_component_founds)
if(OpenSceneGraph_FIND_REQUIRED)
foreach(_osg_module ${_osg_modules_to_process})
string(TOUPPER ${_osg_module} _osg_module_UC)
list(APPEND _osg_component_founds ${_osg_module_UC}_FOUND)
endforeach()
endif()
include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
FIND_PACKAGE_HANDLE_STANDARD_ARGS(OpenSceneGraph
REQUIRED_VARS OPENSCENEGRAPH_LIBRARIES OPENSCENEGRAPH_INCLUDE_DIR ${_osg_component_founds}
VERSION_VAR OPENSCENEGRAPH_VERSION)
unset(_osg_component_founds)
set(OPENSCENEGRAPH_INCLUDE_DIRS ${OPENSCENEGRAPH_INCLUDE_DIR})
|
