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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
#
# This module searches for the OpenSceneGraph core "osg" library as well
# as OpenThreads, 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 cmake_minimum_required(VERSION 2.6.3) or download and place
# FindOpenThreads.cmake, Findosg_functions.cmake, Findosg.cmake, and
# Find<etc>.cmake files into your 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. CMAKE_PREFIX_PATH can also be used
# for this (see find_library() CMake documentation).
#
# ``<MODULE>_DIR``
# (where MODULE is of the form "OSGVOLUME" and there is a 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})
|
