<commit_before>set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS TRUE)
set_property(GLOBAL PROPERTY USE_FOLDERS ON)

IF(WIN32)
    CMAKE_MINIMUM_REQUIRED(VERSION 2.4.6 FATAL_ERROR)
ELSE(WIN32)
    IF(APPLE)
        CMAKE_MINIMUM_REQUIRED(VERSION 2.6.0 FATAL_ERROR)
    ELSE(APPLE)
        CMAKE_MINIMUM_REQUIRED(VERSION 2.4.4 FATAL_ERROR)
    ENDIF(APPLE)
ENDIF(WIN32)

if(COMMAND cmake_policy)
    # Works around warnings libraries linked against that don't
    # have absolute paths (e.g. -lpthreads)
    cmake_policy(SET CMP0003 NEW)

    # Works around warnings about escaped quotes in ADD_DEFINITIONS
    # statements.
    cmake_policy(SET CMP0005 NEW)

    # tell CMake to prefer CMake's own CMake modules when available
    # only available from cmake-2.8.4
    if(${CMAKE_MAJOR_VERSION} GREATER 2 OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} GREATER 8) OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 8 AND ${CMAKE_PATCH_VERSION} GREATER 3))
        cmake_policy(SET CMP0017 NEW)
    endif()

    # cmake-2.6.1 introduces policy cmp0008 decide how to treat full path libraries that do not appear to be valid library file names
    # quote from cvslog "Such libraries worked by accident in the VS IDE and Xcode generators in CMake 2.4 and below."
    if(${CMAKE_MAJOR_VERSION} GREATER 2 OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} GREATER 6) OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 6 AND ${CMAKE_PATCH_VERSION} GREATER 0))
        cmake_policy(SET CMP0008 OLD)
    endif()

    # disable autolinking to qtmain as we have our own main() functions (new in Qt 5.1)
    if(${CMAKE_MAJOR_VERSION} GREATER 2 OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} GREATER 8) OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 8 AND ${CMAKE_PATCH_VERSION} GREATER 10))
        cmake_policy(SET CMP0020 OLD)
    endif()
    # nicer version check - but needs at least CMake 2.6.2? Worth upgrading the requirements?
    #if("${CMAKE_VERSION}" VERSION_GREATER 2.8.10)
    # or even easier (available in cmake-2.6)
    #if(POLICY CMPxyzw)

endif()

PROJECT(OpenSceneGraph)

SET(OPENSCENEGRAPH_MAJOR_VERSION 3)
SET(OPENSCENEGRAPH_MINOR_VERSION 5)
SET(OPENSCENEGRAPH_PATCH_VERSION 0)
SET(OPENSCENEGRAPH_SOVERSION 140)

# set to 0 when not a release candidate, non zero means that any generated
# svn tags will be treated as release candidates of given number
SET(OPENSCENEGRAPH_RELEASE_CANDIDATE 0)

SET(OPENSCENEGRAPH_VERSION ${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINOR_VERSION}.${OPENSCENEGRAPH_PATCH_VERSION})

SET(OSG_PLUGINS osgPlugins-${OPENSCENEGRAPH_VERSION})

SET(OSG_PLUGIN_PREFIX "")

IF (CYGWIN)
    SET(OSG_PLUGIN_PREFIX "cygwin_")
ENDIF()

IF(MINGW)
    SET(OSG_PLUGIN_PREFIX "mingw_")
ENDIF()


# We want to build SONAMES shared librariess
SET(OPENSCENEGRAPH_SONAMES TRUE)
SET(OPENTHREADS_SONAMES TRUE)

SET(OpenThreads_SOURCE_DIR ${OpenSceneGraph_SOURCE_DIR})

# We have some custom .cmake scripts not in the official distribution.
# Maybe this can be used override existing behavior if needed?
SET(CMAKE_MODULE_PATH "${OpenSceneGraph_SOURCE_DIR}/CMakeModules;${CMAKE_MODULE_PATH}")

# Change the default build type to Release
IF(NOT CMAKE_BUILD_TYPE)
    SET(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel." FORCE)
ENDIF(NOT CMAKE_BUILD_TYPE)


IF(ANDROID)
    INCLUDE(OsgAndroidMacroUtils)
ENDIF()

# Okay, here's the problem: On some platforms, linking against OpenThreads
# is not enough and explicit linking to the underlying thread library
# is also required (e.g. FreeBSD). But OpenThreads may be built with different
# backends (Pthreads, Sproc, Windows) so we don't know what the underlying
# thread library is because some platforms support multiple backends (e.g.
# IRIX supports Sproc and Pthreads). Linking all libraries won't work
# because the libraries may be incompatible.
# So the current solution is to attempt best guess linking and exempt certain
# cases. With IRIX, we're going to hope explicit linking to the underlying
# library is not necessary. We currently don't case for pthreads on Windows
# which might be an issue on things like Cygwin. This may need to be fixed.
IF(NOT ANDROID)
    FIND_PACKAGE(Threads)
ENDIF()
IF(CMAKE_SYSTEM MATCHES IRIX)
    # Erase CMAKE_THREAD_LIBS_INIT and hope it works
    SET(CMAKE_THREAD_LIBS_INIT "" CACHE INTERNAL "")
ENDIF()

OPTION(OSG_MAINTAINER "Enable OpenSceneGraph maintainer build methods, such as making svn branches, tags, updating ChangeLog." OFF)
IF (OSG_MAINTAINER)

    SET(OPENSCENEGRAPH_SVN "trunk")
    #SET(OPENSCENEGRAPH_SVN "branches")
    SET(OPENSCENEGRAPH_BRANCH OpenSceneGraph-${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINOR_VERSION})

    #
    # Provide target for tagging a release
    #
    SET(SVNCOMMAND svn)
    SET(SVNTRUNKDIR     http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk)
    SET(SVNTAGDIR       http://svn.openscenegraph.org/osg/OpenSceneGraph/tags)
    SET(SVNBRANCHDIR    http://svn.openscenegraph.org/osg/OpenSceneGraph/branches)

    IF   (OPENSCENEGRAPH_SVN STREQUAL "trunk")
        SET(SVNSOURCEDIR ${SVNTRUNKDIR})
    ELSE()
        SET(SVNSOURCEDIR ${SVNBRANCHDIR}/${OPENSCENEGRAPH_BRANCH})
    ENDIF()


    IF   (OPENSCENEGRAPH_RELEASE_CANDIDATE EQUAL 0)
        SET(RELEASE_NAME OpenSceneGraph-${OPENSCENEGRAPH_VERSION})
    ELSE()
        SET(RELEASE_NAME OpenSceneGraph-${OPENSCENEGRAPH_VERSION}-rc${OPENSCENEGRAPH_RELEASE_CANDIDATE})
    ENDIF()


    ADD_CUSTOM_TARGET(tag-test
        COMMAND echo ${SVNCOMMAND} copy ${SVNSOURCEDIR} ${SVNTAGDIR}/${RELEASE_NAME} -m "Release ${RELEASE_NAME}"
    )

    ADD_CUSTOM_TARGET(tag-run
        COMMAND ${SVNCOMMAND} copy ${SVNSOURCEDIR} ${SVNTAGDIR}/${RELEASE_NAME} -m "Release ${RELEASE_NAME}"
    )

    ADD_CUSTOM_TARGET(branch-test
        COMMAND echo ${SVNCOMMAND} copy ${SVNSOURCEDIR} ${SVNBRANCHDIR}/${OPENSCENEGRAPH_BRANCH} -m "Branch ${OPENSCENEGRAPH_BRANCH}"
    )

    ADD_CUSTOM_TARGET(branch-run
        COMMAND ${SVNCOMMAND} copy ${SVNSOURCEDIR} ${SVNBRANCHDIR}/${OPENSCENEGRAPH_BRANCH} -m "Branch ${OPENSCENEGRAPH_BRANCH}"
    )

    #
    # Provide target for generating ChangeLog
    #
    SET(GENERATELOGS svn2cl)

    ADD_CUSTOM_TARGET(ChangeLog
        COMMAND ${SVNCOMMAND} update
        COMMAND ${GENERATELOGS} ${SVNSOURCEDIR}
    )

ENDIF(OSG_MAINTAINER)

IF(NOT ANDROID)
IF(APPLE)
    # Determine the canonical name of the selected Platform SDK
    EXECUTE_PROCESS(COMMAND "/usr/bin/sw_vers" "-productVersion"
                    OUTPUT_VARIABLE OSG_OSX_SDK_NAME
                    OUTPUT_STRIP_TRAILING_WHITESPACE)
    STRING(REPLACE "." ";" MACOS_VERSION_LIST ${OSG_OSX_SDK_NAME})
    LIST(GET MACOS_VERSION_LIST 0 MACOS_VERSION_MAJOR)
    LIST(GET MACOS_VERSION_LIST 1 MACOS_VERSION_MINOR)
    LIST(GET MACOS_VERSION_LIST 2 MACOS_VERSION_PATCH)

    SET(OSG_OSX_SDK_NAME "macosx${MACOS_VERSION_MAJOR}.${MACOS_VERSION_MINOR}")

    # Trying to get CMake to generate an XCode IPhone project, current efforts are to get iphoneos sdk 3.1 working
    # Added option which needs manually setting to select the IPhone SDK for building. We can only have one of the below
    # set to true. Should realy have an OSG_BUILD_PLATFORM variable that we set to our desired platform
    OPTION(OSG_BUILD_PLATFORM_IPHONE "Enable IPhoneSDK Device support" OFF)
    OPTION(OSG_BUILD_PLATFORM_IPHONE_SIMULATOR "Enable IPhoneSDK Simulator support" OFF)

    IF(OSG_BUILD_PLATFORM_IPHONE OR OSG_BUILD_PLATFORM_IPHONE_SIMULATOR)

        #you need to manually set the default sdk version here
        SET (IPHONE_SDKVER "6.0" CACHE STRING "IOS SDK-Version")
        SET (IPHONE_VERSION_MIN "4.2" CACHE STRING "IOS minimum os version, use 7.0 or greater to get 64bit support")

        #the below is taken from ogre, it states the gcc stuff needs to happen before PROJECT() is called. I've no clue if we even need it
        # Force gcc <= 4.2 on iPhone
        IF(IPHONE_VERSION_MIN LESS "6.0")
            include(CMakeForceCompiler)
            CMAKE_FORCE_C_COMPILER(llvm-gcc-4.2 GNU)
            CMAKE_FORCE_CXX_COMPILER(llvm-gcc-4.2 GNU)
            SET(GCC_THUMB_SUPPORT NO)
        ENDIF()

        #set either the device sdk or the simulator sdk. Can't find away to separate these in the same project
        IF(OSG_BUILD_PLATFORM_IPHONE)
            SET (IPHONE_DEVROOT "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer")
            SET (IPHONE_SDKROOT "${IPHONE_DEVROOT}/SDKs/iPhoneOS${IPHONE_SDKVER}.sdk")
        ELSE()
            SET (IPHONE_DEVROOT "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer")
            SET (IPHONE_SDKROOT "${IPHONE_DEVROOT}/SDKs/iPhoneSimulator${IPHONE_SDKVER}.sdk")
        ENDIF()

        # Apple iOS: Find OpenGLES
        FIND_LIBRARY(OPENGLES_LIBRARY OpenGLES)
    ELSE ()
        FIND_LIBRARY(CARBON_LIBRARY Carbon)
        FIND_LIBRARY(COCOA_LIBRARY Cocoa)

        # Apple OS X: Find OpenGL and AGL
        FIND_PACKAGE(OpenGL)
        FIND_LIBRARY(AGL_LIBRARY AGL)
    ENDIF ()

    OPTION(OSG_COMPILE_FRAMEWORKS "compile frameworks instead of dylibs (experimental)" OFF)
    SET(OSG_COMPILE_FRAMEWORKS_INSTALL_NAME_DIR "@executable_path/../Frameworks" CACHE STRING "install name dir for compiled frameworks")
ELSE()
    # Non-Apple: Find OpenGL
    FIND_PACKAGE(OpenGL)
ENDIF()
ENDIF()





IF(UNIX AND NOT ANDROID)
    # Not sure what this will do on Cygwin and Msys
    # Also, remember OS X X11 is a user installed option so it may not exist.
    FIND_PACKAGE(X11)
    # Some Unicies need explicit linkage to the Math library or the build fails.
    FIND_LIBRARY(MATH_LIBRARY m)

    FIND_LIBRARY(DL_LIBRARY dl)
    IF(NOT DL_LIBRARY)
        SET(DL_LIBRARY "") # change from NOTFOUND to empty when passed to linker
    ENDIF()

    IF( CMAKE_SYSTEM MATCHES "Linux" )
        FIND_LIBRARY( RT_LIBRARY rt )
    ENDIF( CMAKE_SYSTEM MATCHES "Linux" )

ENDIF()

INCLUDE_DIRECTORIES(
    ${OpenSceneGraph_SOURCE_DIR}/include
    ${OPENGL_INCLUDE_DIR}
)

# Make the headers visible to everything
IF(NOT ${PROJECT_BINARY_DIR} EQUAL ${PROJECT_SOURCE_DIR})
   INCLUDE_DIRECTORIES(${PROJECT_BINARY_DIR}/include)
ENDIF()

# Common global definitions
#ADD_DEFINITIONS(-D)
# Platform specific definitions


IF(WIN32 AND NOT ANDROID)

    IF(MSVC)
        # This option is to enable the /MP switch for Visual Studio 2005 and above compilers
        OPTION(WIN32_USE_MP "Set to ON to build OpenSceneGraph with the /MP option (Visual Studio 2005 and above)." OFF)
        MARK_AS_ADVANCED(WIN32_USE_MP)
        IF(WIN32_USE_MP)
            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
        ENDIF(WIN32_USE_MP)

        # turn off various warnings
        # foreach(warning 4244 4251 4267 4275 4290 4786 4305 4996)
        #     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd${warning}")
        # endforeach(warning)

        # This option is to enable the /DYNAMICBASE switch
        # It is used to workaround a bug in Windows 7 when linking in release, which results in corrupt
        # binaries. See this page for details: http://www.wintellect.com/CS/blogs/jrobbins/archive/2009/01/24/the-case-of-the-corrupt-pe-binaries.aspx
        OPTION(WIN32_USE_DYNAMICBASE "Set to ON to build OpenSceneGraph with the /DYNAMICBASE option to work around a bug when linking release executables on Windows 7." OFF)
        MARK_AS_ADVANCED(WIN32_USE_DYNAMICBASE)
        IF(WIN32_USE_DYNAMICBASE)
            SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /DYNAMICBASE")
        ENDIF(WIN32_USE_DYNAMICBASE)

        # More MSVC specific compilation flags
        ADD_DEFINITIONS(-D_SCL_SECURE_NO_WARNINGS)
        ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE)

        OPTION(MSVC_DISABLE_CHECKED_ITERATORS "Set to ON to disable Visual C++ checked iterators. If you do this you must ensure that every other project in your solution and all dependencies are compiled with _SECURE_SCL=0." OFF)
        MARK_AS_ADVANCED(MSVC_DISABLE_CHECKED_ITERATORS)
        IF(MSVC_DISABLE_CHECKED_ITERATORS)
            ADD_DEFINITIONS(-D_SECURE_SCL=0)
        ENDIF(MSVC_DISABLE_CHECKED_ITERATORS)

        OPTION(MSVC_USE_DEFAULT_STACK_SIZE "Set to ON to use the default Visual C++ stack size. CMake forces a high stack size by default, which can cause problems for applications with large number of threads." OFF)
        MARK_AS_ADVANCED(MSVC_USE_DEFAULT_STACK_SIZE)
        IF(MSVC_USE_DEFAULT_STACK_SIZE)
            STRING(REGEX REPLACE "/STACK:[0-9]+" "" CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
            STRING(REGEX REPLACE "/STACK:[0-9]+" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
            STRING(REGEX REPLACE "/STACK:[0-9]+" "" CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS}")
        ENDIF(MSVC_USE_DEFAULT_STACK_SIZE)
        get_filename_component( CMAKE_MAKE_PROGRAM_NAME ${CMAKE_MAKE_PROGRAM} NAME)
        IF (CMAKE_MAKE_PROGRAM_NAME STREQUAL "VCExpress.exe")
            OPTION(MSVC_BUILD_USE_SOLUTION_FOLDERS "Enable project grouping in VS - VCExpress detected, not supported in VCExpress )" OFF)
        ELSE()
            OPTION(MSVC_BUILD_USE_SOLUTION_FOLDERS "Enable project grouping in VS" ON)
        ENDIF()
        SET_PROPERTY(GLOBAL PROPERTY USE_FOLDERS ${MSVC_BUILD_USE_SOLUTION_FOLDERS})
    ENDIF()

    #needed for net plugin
    SET (OSG_SOCKET_LIBS wsock32)
    # Both Cygwin and Msys need -DNOMINMAX ???
    IF(UNIX)
        ADD_DEFINITIONS(-DNOMINMAX)
    ENDIF()

########################################################################################################
# the following options are MSVC specific,
# the first OSG_MSVC_VERSIONED_DLL activate a custom build-time layout that should allow to run examples and application
# fron bin folder without requiring installation step.
# it also prepend "osg${OPENSCENEGRAPH_SOVERSION}-" to only .dll files, leaving .lib files untouched in lib
# it also use a hack to get rid of Debug and Release folder in MSVC projects
# all the .dll and .pdb are in bin and all the .lib and .exp are in lib
#
# the second option disable incremental linking in debug build , that is enabled by default by CMake
##########################################################################################################

    IF(MSVC)
        IF(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4 AND ${CMAKE_PATCH_VERSION} LESS 7)
            MESSAGE("Warning:  disabling versioned options 2.4.6 exibits inconsintencies in .pdb naming, at least under MSVC, suggested upgrading at least to 2.4.7")
            SET(OSG_MSVC_VERSIONED_DLL OFF)
            SET(OSG_MSVC_DEBUG_INCREMENTAL_LINK ON)
        ELSE()
            OPTION(OSG_MSVC_VERSIONED_DLL "Set to ON to build OpenSceneGraph with versioned dll names" ON)
            MARK_AS_ADVANCED(OSG_MSVC_VERSIONED_DLL)
            OPTION(OSG_MSVC_DEBUG_INCREMENTAL_LINK "Set to OFF to build OpenSceneGraph without incremental linking in debug (release is off by default)" ON)
            MARK_AS_ADVANCED(OSG_MSVC_DEBUG_INCREMENTAL_LINK)
            IF(NOT OSG_MSVC_DEBUG_INCREMENTAL_LINK)
                SET(CMAKE_MODULE_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
                SET(CMAKE_SHARED_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
                SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
            ENDIF(NOT OSG_MSVC_DEBUG_INCREMENTAL_LINK)
        ENDIF()
    ENDIF(MSVC)
ENDIF(WIN32 AND NOT ANDROID)

########################################################################################################
##### these were settings located in SetupCommon.cmake used in Luigi builds.... find out what are useful
########################################################################################################
#luigi#SET(CMAKE_VERBOSE_MAKEFILE TRUE)
#luigi#SET(CMAKE_SKIP_RPATH TRUE)
#luigi#SET(CMAKE_SKIP_RULE_DEPENDENCY TRUE)
#luigi#IF(UNIX)
#luigi#    LIST_CONTAINS(contains "g++" ${CMAKE_CXX_COMPILER_LIST})
#luigi#    IF (contains)
#luigi#        MESSAGE(${MY_MESSAGE_DEFAULT} "${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} setting  CMAKE_CXX_COMPILER to g++")
#luigi#        SET(CMAKE_CXX_COMPILER "g++")
#luigi#        SET(CMAKE_CXX_COMPILER_LOADED 2)
#luigi#        SET(CMAKE_CXX_COMPILER_WORKS 2)
#luigi#    ENDIF (contains)
#luigi#    SET(CMAKE_CXX_FLAGS_RELEASE "-O2")
#luigi#    SET(CMAKE_CXX_FLAGS_DEBUG "-ggdb -gstabs")
#luigi#ENDIF(UNIX)
########################################################################################################

OPTION(OSG_NOTIFY_DISABLED "Set to ON to build OpenSceneGraph with the notify() disabled." OFF)

OPTION(OSG_USE_FLOAT_MATRIX "Set to ON to build OpenSceneGraph with float Matrix instead of double." OFF)
MARK_AS_ADVANCED(OSG_USE_FLOAT_MATRIX)

OPTION(OSG_USE_FLOAT_PLANE "Set to ON to build OpenSceneGraph with float Plane instead of double." OFF)
MARK_AS_ADVANCED(OSG_USE_FLOAT_PLANE)

OPTION(OSG_USE_FLOAT_BOUNDINGSPHERE "Set to ON to build OpenSceneGraph with float BoundingSphere instead of double." ON)
MARK_AS_ADVANCED(OSG_USE_FLOAT_BOUNDINGSPHERE)

OPTION(OSG_USE_FLOAT_BOUNDINGBOX "Set to ON to build OpenSceneGraph with float BoundingBox instead of double." ON)
MARK_AS_ADVANCED(OSG_USE_FLOAT_BOUNDINGBOX)

IF (WIN32)
    OPTION(OSG_USE_UTF8_FILENAME "Set to ON to use a UTF8 locale for filenames instead of the default locale." OFF)
    MARK_AS_ADVANCED(OSG_USE_UTF8_FILENAME)
ENDIF()

OPTION(OSG_DISABLE_MSVC_WARNINGS "Set to OFF to not disable MSVC warnings generated by OSG headers." ON)
MARK_AS_ADVANCED(OSG_DISABLE_MSVC_WARNINGS)

OPTION(OSG_PROVIDE_READFILE "Set to ON for include/osgDB/ReadFile to provide the osgDB::read*File(() methods. " ON)
OPTION(OSG_USE_REF_PTR_IMPLICIT_OUTPUT_CONVERSION "Set to ON to use the ref_ptr<> T* operator() output conversion. " ON)


# Map the OPENGL_PROFILE to OSG_GL*_AVAILABLE settings
SET(OPENGL_PROFILE "GL2" CACHE STRING "OpenGL Profile to use, choose from GL1, GL2, GL3, GLES1, GLES2, GLES3")

IF ((OPENGL_PROFILE STREQUAL "GL1") OR (OPENGL_PROFILE STREQUAL "GL2"))
    OPTION(OSG_GL1_AVAILABLE "Set to OFF to disable use of OpenGL 1.x functions library." ON )
ELSE()
    OPTION(OSG_GL1_AVAILABLE "Set to OFF to disable use of OpenGL 1.x functions library." OFF )
ENDIF()

IF ((OPENGL_PROFILE STREQUAL "GL2"))
    OPTION(OSG_GL2_AVAILABLE "Set to OFF to disable use of OpenGL 2.x functions library." ON )
ELSE()
    OPTION(OSG_GL2_AVAILABLE "Set to OFF to disable use of OpenGL 2.x functions library." OFF )
ENDIF()

IF ((OPENGL_PROFILE STREQUAL "GL3") OR (OPENGL_PROFILE STREQUAL "GLCORE"))
    OPTION(OSG_GL3_AVAILABLE "Set to OFF to disable use of OpenGL 3.x functions library." ON )
ELSE()
    OPTION(OSG_GL3_AVAILABLE "Set to OFF to disable use of OpenGL 3.x functions library." OFF )
ENDIF()

IF ((OPENGL_PROFILE STREQUAL "GLES1"))
    OPTION(OSG_GLES1_AVAILABLE "Set to OFF to disable use of OpenGL ES 1.x functions library." ON )
ELSE()
    OPTION(OSG_GLES1_AVAILABLE "Set to OFF to disable use of OpenGL ES 1.x functions library." OFF )
ENDIF()

IF ((OPENGL_PROFILE STREQUAL "GLES2"))
    OPTION(OSG_GLES2_AVAILABLE "Set to OFF to disable use of OpenGL ES 2.x functions library." ON )
ELSEIF ((OPENGL_PROFILE STREQUAL "GLES3"))
    OPTION(OSG_GLES2_AVAILABLE "Set to OFF to disable use of OpenGL ES 2.x functions library." ON )
    OPTION(OSG_GLES3_AVAILABLE "Set to OFF to disable use of OpenGL ES 3.x functions library." ON )
ELSE()
    OPTION(OSG_GLES2_AVAILABLE "Set to OFF to disable use of OpenGL ES 2.x functions library." OFF )
    OPTION(OSG_GLES3_AVAILABLE "Set to OFF to disable use of OpenGL ES 3.x functions library." OFF )
ENDIF()


OPTION(OSG_GL_LIBRARY_STATIC "Set to ON to statically link with OpenGL/GLES library." OFF)

SET(OPENGL_egl_LIBRARY CACHE STRING "Set the OpenGL egl library.")

# Map the OSG_GL*_AVAILABLE settings to OSG_GL_* settings
IF (OSG_GLES2_AVAILABLE OR OSG_GL3_AVAILABLE)
    OPTION(OSG_GL_DISPLAYLISTS_AVAILABLE "Set to OFF to disable use of OpenGL display lists." OFF)
    OPTION(OSG_GL_MATRICES_AVAILABLE "Set to OFF to disable use of OpenGL built-in matrices." OFF)
    OPTION(OSG_GL_VERTEX_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertex/glColor etc." OFF)
    OPTION(OSG_GL_VERTEX_ARRAY_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertexPointer/glColorPointer etc." OFF)
    OPTION(OSG_GL_FIXED_FUNCTION_AVAILABLE "Set to OFF to disable use of OpenGL fixed function pipeline." OFF)
ELSEIF (OSG_GLES1_AVAILABLE)
    OPTION(OSG_GL_DISPLAYLISTS_AVAILABLE "Set to OFF to disable use of OpenGL display lists." OFF)
    OPTION(OSG_GL_MATRICES_AVAILABLE "Set to OFF to disable use of OpenGL built-in matrices." ON)
    OPTION(OSG_GL_VERTEX_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertex/glColor etc." ON)
    OPTION(OSG_GL_VERTEX_ARRAY_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertexPointer/glColorPointer etc." ON)
    OPTION(OSG_GL_FIXED_FUNCTION_AVAILABLE "Set to OFF to disable use of OpenGL fixed function pipeline." ON)
ELSE()
    OPTION(OSG_GL_DISPLAYLISTS_AVAILABLE "Set to OFF to disable use of OpenGL display lists." ON)
    OPTION(OSG_GL_MATRICES_AVAILABLE "Set to OFF to disable use of OpenGL built-in matrices." ON)
    OPTION(OSG_GL_VERTEX_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertex/glColor etc." ON)
    OPTION(OSG_GL_VERTEX_ARRAY_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertexPointer/glColorPointer etc." ON)
    OPTION(OSG_GL_FIXED_FUNCTION_AVAILABLE "Set to OFF to disable use of OpenGL fixed function pipeline." ON)
ENDIF()

IF (OSG_GLES1_AVAILABLE OR OSG_GLES2_AVAILABLE)
    OPTION(OSG_CPP_EXCEPTIONS_AVAILABLE "Set to OFF to disable compile of OSG components that use C++ exceptions." OFF)
ELSE()
    OPTION(OSG_CPP_EXCEPTIONS_AVAILABLE "Set to OFF to disable compile of OSG components that use C++ exceptions." ON)
ENDIF()


# Map the OSG_GL*_AVAILABLE settings to OpenGL header settings
IF (OSG_GL3_AVAILABLE)
    IF (APPLE)
        SET(OPENGL_HEADER1 "#include <OpenGL/gl.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "#include <OpenGL/gl3.h>" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ELSE()

        IF (OPENGL_PROFILE STREQUAL "GLCORE")
            IF(WIN32)
                FIND_PACKAGE(GLCORE REQUIRED)
            ENDIF()
            SET(OPENGL_HEADER1 "#include <GL/glcorearb.h>" CACHE STRING "#include<> line for OpenGL Header")
            SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
        ELSE()
            SET(OPENGL_HEADER1 "#include <GL3/gl3.h>" CACHE STRING "#include<> line for OpenGL Header")
            SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
        ENDIF()

    ENDIF()
ELSEIF(OSG_GLES1_AVAILABLE)
    IF (APPLE AND NOT ANDROID)
        SET(OPENGL_HEADER1 "#include \"TargetConditionals.h\"" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "#include <OpenGLES/ES1/gl.h>" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ELSE()
        SET(OPENGL_HEADER1 "#include <GLES/gl.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ENDIF()
ELSEIF(OSG_GLES2_AVAILABLE)
    IF (APPLE AND NOT ANDROID)
        SET(OPENGL_HEADER1 "#include \"TargetConditionals.h\"" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "#include <OpenGLES/ES2/gl.h>" CACHE STRING "#include<> line for additional OpenGL Headers if required")
        # TODO: GLES3
    ELSE()
        SET(OPENGL_HEADER1 "#include <GLES2/gl2.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
        # TODO: GLES3
    ENDIF()
ELSE()
    IF (APPLE)
        SET(OPENGL_HEADER1 "#include <OpenGL/gl.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ELSE()
        SET(OPENGL_HEADER1 "#include <GL/gl.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ENDIF()
ENDIF()

IF (OSG_GL1_AVAILABLE)
    SET(OSG_GL1_FEATURES "true")
ELSE()
    SET(OSG_GL1_FEATURES "false")
ENDIF()

IF (OSG_GL2_AVAILABLE)
    SET(OSG_GL2_FEATURES "true")
ELSE()
    SET(OSG_GL2_FEATURES "false")
ENDIF()

IF (OSG_GL3_AVAILABLE)
    SET(OSG_GL3_FEATURES "true")
ELSE()
    SET(OSG_GL3_FEATURES "false")
ENDIF()

IF (OSG_GLES1_AVAILABLE)
    SET(OSG_GLES1_FEATURES "true")
ELSE()
    SET(OSG_GLES1_FEATURES "false")
ENDIF()

IF (OSG_GLES2_AVAILABLE)
    SET(OSG_GLES2_FEATURES "true")
ELSE()
    SET(OSG_GLES2_FEATURES "false")
ENDIF()

IF (OSG_GLES3_AVAILABLE)
    SET(OSG_GLES3_FEATURES "true")
ELSE()
    SET(OSG_GLES3_FEATURES "false")
ENDIF()

IF(ANDROID)
    IF(OSG_GLES1_AVAILABLE)
        FIND_PATH(OPENGL_INCLUDE_DIR GLES/gl.h
              PATHS
              ${ANDROID_SYSROOT}/usr/include)
        FIND_LIBRARY(OPENGL_gl_LIBRARY  GLESv1_CM
                 PATHS
                     ${ANDROID_SYSROOT}/usr/lib)
    ELSEIF(OSG_GLES2_AVAILABLE)
        FIND_PATH(OPENGL_INCLUDE_DIR GLES2/gl2.h
              PATHS
              ${ANDROID_SYSROOT}/usr/include)
        FIND_LIBRARY(OPENGL_gl_LIBRARY  GLESv2
                 PATHS
                     ${ANDROID_SYSROOT}/usr/lib)
    ENDIF()
ENDIF()


################################################################################
# Set Config header file

SET(OPENSCENEGRAPH_CONFIG_HEADER "${PROJECT_BINARY_DIR}/include/osg/Config")
CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/Config.in"
               "${OPENSCENEGRAPH_CONFIG_HEADER}")


################################################################################
# Set OpenGL header file

INCLUDE (CheckCXXSourceCompiles)
#SET(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${OPENGL_INCLUDE_DIR})

check_cxx_source_compiles(
    "${OPENGL_HEADER1}
    ${OPENGL_HEADER2}
    int main() { GLint64 test; return 0; }"
    GL_HEADER_HAS_GLINT64
)

check_cxx_source_compiles(
    "${OPENGL_HEADER1}
    ${OPENGL_HEADER2}
    int main() { GLuint64 test; return 0; }"
    GL_HEADER_HAS_GLUINT64
)

SET(OPENSCENEGRAPH_OPENGL_HEADER "${PROJECT_BINARY_DIR}/include/osg/GL")
CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/GL.in"
               "${OPENSCENEGRAPH_OPENGL_HEADER}")

# INSTALL_FILES(/include/osg/ FILES "${OPENSCENEGRAPH_CONFIG_HEADER}")


################################################################################
# Set Version header file

SET(OPENSCENEGRAPH_VERSION_HEADER "${PROJECT_BINARY_DIR}/include/osg/Version")
CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/Version.in"
               "${OPENSCENEGRAPH_VERSION_HEADER}")

################################################################################
# Set Version Info resource file


IF(MSVC)
    SET(OPENSCENEGRAPH_VERSIONINFO_RC "${PROJECT_BINARY_DIR}/PlatformSpecifics/Windows/OpenSceneGraphVersionInfo.rc")
    CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/PlatformSpecifics/Windows/OpenSceneGraphVersionInfo.rc.in"
                   "${OPENSCENEGRAPH_VERSIONINFO_RC}")
ENDIF()

################################################################################
# Optional build components

# OSG Applications
OPTION(BUILD_OSG_APPLICATIONS "Enable to build OSG Applications (e.g. osgviewer)" ON)

# OSG Examples
OPTION(BUILD_OSG_EXAMPLES "Enable to build OSG Examples" OFF)

################################################################################
# 3rd Party Dependency Stuff
IF(WIN32 AND NOT ANDROID)
    INCLUDE(Find3rdPartyDependencies)
ENDIF()

OPTION(OSG_USE_LOCAL_LUA_SOURCE "Enable to use local Lua source when building the lua plugin" ON)

#
# If you want to prevent CMake from picking up on any of the following optional 3rd Party dependencies in CMake 2.8 onwards
# you can use the following style of command line option when invoking Cmake (here illustrating ignoring PythonLibs) :
# cmake -DCMAKE_DISABLE_FIND_PACKAGE_PythonLibs=1 .
#
IF(ANDROID)
    ANDROID_3RD_PARTY()
ELSE()
# Common to all platforms except android:
    FIND_PACKAGE(Freetype)
    FIND_PACKAGE(Inventor)
    FIND_PACKAGE(Jasper)
    FIND_PACKAGE(OpenEXR)
    FIND_PACKAGE(COLLADA)
    FIND_PACKAGE(FBX)
    FIND_PACKAGE(ZLIB)
    FIND_PACKAGE(Xine)
    FIND_PACKAGE(OpenVRML)
    FIND_PACKAGE(Performer)
    FIND_PACKAGE(GDAL)
    FIND_PACKAGE(GTA)
    FIND_PACKAGE(CURL)
    FIND_PACKAGE(LibVNCServer)
    FIND_PACKAGE(OurDCMTK)
    FIND_PACKAGE(FFmpeg)
    FIND_PACKAGE(GStreamer COMPONENTS app pbutils)
    FIND_PACKAGE(GLIB COMPONENTS gobject)
    FIND_PACKAGE(DirectShow)
    FIND_PACKAGE(SDL2)
    FIND_PACKAGE(SDL)
    FIND_PACKAGE(Poppler-glib)
    FIND_PACKAGE(RSVG)
    FIND_PACKAGE(GtkGl)
    FIND_PACKAGE(DirectInput)
    FIND_PACKAGE(NVTT)
    IF (NOT WIN32)
        FIND_PACKAGE(Asio)
    ENDIF()
    FIND_PACKAGE(ZeroConf)

    FIND_PACKAGE(LIBLAS)

    IF (NOT(OSG_USE_LOCAL_LUA_SOURCE))
        FIND_PACKAGE(Lua52)
        IF (NOT (LUA_LIBRARIES AND LUA_INCLUDE_DIR))
            FIND_PACKAGE(Lua51)
        ENDIF()
    ENDIF()

    # V8 and Python plugins are tests for linking against these libraries but aren't functionality beyond this.
    # FIND_PACKAGE(V8)
    # FIND_PACKAGE(PythonLibs)
ENDIF()

IF(CMAKE_MAJOR_VERSION EQUAL 2 AND CMAKE_MINOR_VERSION LESS 8)
    FIND_PACKAGE(ITK)
ENDIF()

# Include macro utilities here
INCLUDE(OsgMacroUtils)

OPTION(OSG_USE_QT "Enable to use Qt (build Qt-dependent libraries, plugins and examples)" ON)

IF(OSG_USE_QT AND NOT ANDROID)
# To select a specific version of QT define DESIRED_QT_VERSION
# via cmake -DDESIRED_QT_VERSION=5
# QUIET option disables messages if the package cannot be found.

    IF  (DESIRED_QT_VERSION)
        IF  (DESIRED_QT_VERSION MATCHES 5)
            FIND_PACKAGE(Qt5Widgets)
        ELSEIF (DESIRED_QT_VERSION MATCHES 4)
            FIND_PACKAGE(Qt4)
        ELSE()
            FIND_PACKAGE(Qt3)
        ENDIF()

    ELSE()

        FIND_PACKAGE(Qt5Widgets QUIET)

        IF ( Qt5Widgets_FOUND )
            # CMake 2.8.8 or greater required
            BUILDER_VERSION_GREATER(2 8 7)
            IF(NOT VALID_BUILDER_VERSION)
                MESSAGE(
                SEND_ERROR
                "Qt5 requires CMake version 2.8.8 or greater!\n"
                "Update CMake or set DESIRED_QT_VERSION to less than 5
                or disable OSG_USE_QT."
                )
            ENDIF( )
        ENDIF( )

        IF ( NOT Qt5Widgets_FOUND )
            FIND_PACKAGE(Qt4)

            IF (NOT QT4_FOUND)
                FIND_PACKAGE(Qt3)
            ENDIF()
        ENDIF()
    ENDIF()

    #If we have found Qt5, let's try to top off by getting the webkit as well
    IF ( Qt5Widgets_FOUND )
        FIND_PACKAGE(Qt5WebKitWidgets QUIET)

        IF(COMMAND cmake_policy)
            IF(${CMAKE_MAJOR_VERSION} GREATER 2)
                # Qt5 qt5_use_modules usage was causing "Policy CMP0043 is not set: Ignore COMPILE_DEFINITIONS_<Config> properties." warnings
                cmake_policy(SET CMP0043 NEW)
            ENDIF()
        ENDIF()
    ENDIF()

ENDIF()

#optional example related dependencies
IF   (BUILD_OSG_EXAMPLES AND NOT ANDROID)


    FIND_PACKAGE(FLTK)
    FIND_PACKAGE(GLUT)
    FIND_PACKAGE(FOX)

    SET(wxWidgets_USE_LIBS base core gl net)
    FIND_PACKAGE(wxWidgets)

ENDIF(BUILD_OSG_EXAMPLES AND NOT ANDROID)


# Platform specific:
# (We can approach this one of two ways. We can try to FIND everything
# and simply check if we found the packages before actually building
# or we can hardcode the cases. The advantage of the former is that
# packages that are installed on platforms that don't require them
# will still get built (presuming no compatibility issues). But this
# also means modules that are redundant may get built. For example,
# OS X doesn't need GIF, JPEG, PNG, TIFF, etc because it uses QuickTime.
# Also, it will clutter the CMake menu with "NOT_FOUND".
# The downside to the latter is that it is harder to build those
# potentially redundant modules.)

# Image readers/writers depend on 3rd party libraries except for OS X which
# can use Quicktime.
IF(NOT ANDROID)
    IF(NOT APPLE)
        FIND_PACKAGE(GIFLIB)
        FIND_PACKAGE(JPEG)
        FIND_PACKAGE(PNG)
        FIND_PACKAGE(TIFF)
        # QuickTime is required for OS X, but optional for Windows.
        IF(WIN32)
            FIND_PACKAGE(QuickTime)
        ENDIF()

    ELSE()
        FIND_PACKAGE(TIFF)
        FIND_PACKAGE(QuickTime)
        FIND_PACKAGE(QTKit)
        FIND_PACKAGE(CoreVideo)
        FIND_PACKAGE(CoreMedia)
        FIND_PACKAGE(QuartzCore)
        FIND_PACKAGE(AVFoundation)
    ENDIF()
ENDIF()

################################################################################
# Create bin and lib directories if required

IF("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
   FILE(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/bin ${CMAKE_BINARY_DIR}/lib ${CMAKE_BINARY_DIR}/lib/${OSG_PLUGINS})
ENDIF()


################################################################################
# Installation stuff

SET(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "add a postfix, usually d on windows")
SET(CMAKE_RELEASE_POSTFIX "" CACHE STRING "add a postfix, usually empty on windows")
SET(CMAKE_RELWITHDEBINFO_POSTFIX "rd" CACHE STRING "add a postfix, usually empty on windows")
SET(CMAKE_MINSIZEREL_POSTFIX "s" CACHE STRING "add a postfix, usually empty on windows")

# Set the build postfix extension according to what configuration is being built.
IF (CMAKE_BUILD_TYPE MATCHES "Release")
    SET(CMAKE_BUILD_POSTFIX "${CMAKE_RELEASE_POSTFIX}")
ELSEIF (CMAKE_BUILD_TYPE MATCHES "MinSizeRel")
    SET(CMAKE_BUILD_POSTFIX "${CMAKE_MINSIZEREL_POSTFIX}")
ELSEIF(CMAKE_BUILD_TYPE MATCHES "RelWithDebInfo")
    SET(CMAKE_BUILD_POSTFIX "${CMAKE_RELWITHDEBINFO_POSTFIX}")
ELSEIF(CMAKE_BUILD_TYPE MATCHES "Debug")
    SET(CMAKE_BUILD_POSTFIX "${CMAKE_DEBUG_POSTFIX}")
ELSE()
    SET(CMAKE_BUILD_POSTFIX "")
ENDIF()

IF(UNIX AND NOT WIN32)
  SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_DEBUG")
  SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG")
ENDIF()

IF(CYGWIN)
  SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_DEBUG")
  SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG")
ENDIF()

IF(UNIX AND NOT WIN32 AND NOT APPLE)
  IF(CMAKE_SIZEOF_VOID_P MATCHES "8")
      SET(LIB_POSTFIX "64" CACHE STRING "suffix for 32/64 dir placement")
      MARK_AS_ADVANCED(LIB_POSTFIX)
  ENDIF()
ENDIF()
IF(NOT DEFINED LIB_POSTFIX)
    SET(LIB_POSTFIX "")
ENDIF()

# Here we apparantly do some funky stuff with making the bin/ and lib/
# folders which is probably needed to work around a very old CMake bug?

#SET(OUTPUT_BINDIR ${PROJECT_BINARY_DIR}/bin/${CMAKE_SYSTEM_NAME})
SET(OUTPUT_BINDIR ${PROJECT_BINARY_DIR}/bin)
MAKE_DIRECTORY(${OUTPUT_BINDIR})
IF(MSVC AND NOT MSVC_IDE)
    MAKE_DIRECTORY(${OUTPUT_BINDIR}/${OSG_PLUGINS})
ENDIF(MSVC AND NOT MSVC_IDE)

#SET(OUTPUT_LIBDIR ${PROJECT_BINARY_DIR}/lib/${CMAKE_SYSTEM_NAME})
SET(OUTPUT_LIBDIR ${PROJECT_BINARY_DIR}/lib)
MAKE_DIRECTORY(${OUTPUT_LIBDIR})
IF(NOT MSVC OR MSVC_IDE)
    MAKE_DIRECTORY(${OUTPUT_LIBDIR}/${OSG_PLUGINS})
ENDIF(NOT MSVC OR MSVC_IDE)

# On CMake 2.4.x use EXECUTABLE_OUTPUT_PATH and LIBRARY_OUTPUT_PATH and later
# we work around the DLL placement by use of the PREFIX target property hack
#
# On CMake 2.6.x use the newly minted CMAKE_LIBRARY_OUTPUT_DIRECTORY,
# CMAKE_ARCHIVE_OUTPUT_DIRECTORY & CMAKE_RUNTIME_OUTPUT_DIRECTORY
#
# CMake >= 2.8.1 changed the output directory algorithm (See doc).
# Here we also set per-configuration directories (CMAKE_*_OUTPUT_DIRECTORY_<CONFIG>), or else binaries are generated in /bin/Debug and /bin/Release, etc. with MSVC and Xcode.
# (Doc reads "multi-configuration generators (VS, Xcode) do NOT append a per-configuration subdirectory to the specified directory").
# The workaround for 2.6.x (adding "../" as an output prefix for each target) seem to have no effect in >=2.8.1, so there is no need to change this.
IF(CMAKE_MAJOR_VERSION EQUAL 2 AND CMAKE_MINOR_VERSION LESS 5)
    # If CMake < 2.6.0
    SET(EXECUTABLE_OUTPUT_PATH ${OUTPUT_BINDIR})
    SET(LIBRARY_OUTPUT_PATH    ${OUTPUT_LIBDIR})
ELSE()
    # If CMake >= 2.6.0
    SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${OUTPUT_LIBDIR})
    SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${OUTPUT_BINDIR})
    IF(WIN32)
        SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${OUTPUT_BINDIR})
    ELSE(WIN32)
        SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${OUTPUT_LIBDIR})
    ENDIF(WIN32)

    # Testing CMAKE_VERSION is possible in >= 2.6.4 only
    BUILDER_VERSION_GREATER(2 8 0)
    IF(VALID_BUILDER_VERSION)  # If CMake >= 2.8.1
        FOREACH(CONF ${CMAKE_CONFIGURATION_TYPES})        # For each configuration (Debug, Release, MinSizeRel... and/or anything the user chooses)
            STRING(TOUPPER "${CONF}" CONF)                # Go uppercase (DEBUG, RELEASE...)
            SET("CMAKE_ARCHIVE_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_LIBDIR}")
            SET("CMAKE_RUNTIME_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_BINDIR}")
            IF(WIN32)
                SET("CMAKE_LIBRARY_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_BINDIR}")
            ELSE()
                SET("CMAKE_LIBRARY_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_LIBDIR}")
            ENDIF()
        ENDFOREACH()
    ENDIF(VALID_BUILDER_VERSION)
ENDIF()

#SET(INSTALL_BINDIR OpenSceneGraph/bin)
#SET(INSTALL_INCDIR OpenSceneGraph/include)
#SET(INSTALL_LIBDIR OpenSceneGraph/lib)
#SET(INSTALL_DOCDIR OpenSceneGraph/doc)

################################################################################
# User Options


# Expose CMAKE_INCLUDE_PATH and CMAKE_LIBARY_PATH to the GUI so users
# may set these values without needing to manipulate the environment.
SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} CACHE STRING "You may add additional search paths here. Use ; to separate multiple paths.")
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} CACHE STRING "You may add additional search paths here. Use ; to separate multiple paths.")
# We are proposing that a new variable called CMAKE_PREFIX_PATH be introduced
# to CMake to compliment CMAKE_INCLUDE_PATH and CMAKE_LIBRARY_PATH.
# A formal feature request has been submited to CMake, Bug #4947.
# It is intended for those users who have common prefixes for their INCLUDE
# and LIBRARY locations. So if users have headers in /usr/local/include
# and libraries in /usr/local/lib, the common prefix is /usr/local.
# It should also cover the case where headers and libraries are
# in the same directory.
# Our proposal expects that FIND_* commands will automatically search for
# CMAKE_PREFIX_PATH right after CMAKE_INCLUDE_PATH or CMAKE_LIBRARY_PATH.
# Obviously, since CMake does not currently support this, we must write
# our Find*.cmake modules to explicitly support this. Otherwise, this variable
# will have no impact.
# This is unofficial so this may be removed or changed at anytime.
SET(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} CACHE STRING "(EXPERIMENTAL) You may add additional search paths here. Use ; to separate multiple paths.")

# This is for an advanced option to give aggressive warnings
# under different compilers. If yours is not implemented, this option
# will not be made available.
IF(CMAKE_COMPILER_IS_GNUCXX)
    # To be complete, we might also do GNUCC flags,
    # but everything here is C++ code.
    # -Wshadow and -Woverloaded-virtual are also interesting flags, but OSG
    # returns too many hits.
    # FYI, if we do implement GNUCC, then -Wmissing-prototypes in another
    # interesting C-specific flag.
    # Also, there is a bug in gcc 4.0. Under C++, -pedantic will create
    # errors instead of warnings for certain issues, including superfluous
    # semicolons and commas, and the use of long long. -fpermissive seems
    # to be the workaround.
    SET(OSG_AGGRESSIVE_WARNING_FLAGS -Wall -Wparentheses -Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces -Wunknown-pragmas -Wunused)

    # Previous included -Wformat=2 in OSG_AGGRESSIVE_WARNING_FLAGS but had to remove it due to standard library errors


ELSEIF(MSVC)
        #disable specific warning level 4 warnings:
        #C4100 'identifier' : unreferenced formal parameter
        #C4127 Error Message conditional expression is constant
        #C4706 assignment within conditional expression
        SET(OSG_AGGRESSIVE_WARNING_FLAGS /W4 /wd4706 /wd4127 /wd4100)
ELSEIF(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
        SET(OSG_AGGRESSIVE_WARNING_FLAGS  -Wall -Wparentheses -Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces -Wunknown-pragmas -Wunused -Wno-overloaded-virtual)

        # CMake lacks an elseif, so other non-gcc, non-VS compilers need
        # to be listed below. If unhandled, OSG_AGGRESSIVE_WARNING_FLAGS should
        # remain unset.

        IF (APPLE)
            SET(OSG_CXX_LANGUAGE_STANDARD "C++11" CACHE STRING "set the c++ language standard (C++98 / GNU++98 / C++11) for OSG" )
            MARK_AS_ADVANCED(OSG_CXX_LANGUAGE_STANDARD)
            # remove existing flags
            REMOVE_CXX_FLAG(-std=c++98)
            REMOVE_CXX_FLAG(-std=gnu++98)
            REMOVE_CXX_FLAG(-std=c++11)
            REMOVE_CXX_FLAG(-stdlib=libstdc++)
            REMOVE_CXX_FLAG(-stdlib=libc++)

            IF(${OSG_CXX_LANGUAGE_STANDARD} STREQUAL "c++98" OR ${OSG_CXX_LANGUAGE_STANDARD} STREQUAL "C++98")
                set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++98")
                set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libstdc++")
                set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++98 -stdlib=libstdc++")
            ELSE()
                IF(${OSG_CXX_LANGUAGE_STANDARD} STREQUAL "gnu++98" OR ${OSG_CXX_LANGUAGE_STANDARD} STREQUAL "GNU++98")
                    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "gnu++98")
                    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libstdc++")
                    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++98 -stdlib=libstdc++")
                ELSE()
                    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++11")
                    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
                    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -stdlib=libc++")
                ENDIF()
            ENDIF()

            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-overloaded-virtual -Wno-conversion")
            set(WARNING_CFLAGS "")
        ENDIF()
ENDIF()

# This part is for the CMake menu option to toggle the warnings on/off.
# This will only be made available if we set values for OSG_AGGRESSIVE_WARNING_FLAGS.
IF(OSG_AGGRESSIVE_WARNING_FLAGS)

    IF (APPLE)
        SET(DEFAULT_USE_AGGRESSIVE_WARNINGS OFF)
    ELSE()
        SET(DEFAULT_USE_AGGRESSIVE_WARNINGS ON)
    ENDIF()

    OPTION(OSG_USE_AGGRESSIVE_WARNINGS "Enable to activate aggressive warnings" ${DEFAULT_USE_AGGRESSIVE_WARNINGS})
    MARK_AS_ADVANCED(OSG_USE_AGGRESSIVE_WARNINGS)

    IF(OSG_USE_AGGRESSIVE_WARNINGS)
        # Add flags defined by OSG_AGGRESSIVE_WARNING_FLAGS if they aren't already there
        FOREACH(flag ${OSG_AGGRESSIVE_WARNING_FLAGS})
            IF(NOT CMAKE_CXX_FLAGS MATCHES "${flag}")
                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}")
            ENDIF()
        ENDFOREACH()
    ELSE()
        # Remove all flags considered aggresive
        FOREACH(flag ${OSG_AGGRESSIVE_WARNING_FLAGS})
            STRING(REGEX REPLACE "${flag}" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
        ENDFOREACH()
    ENDIF()
ENDIF()


# Dynamic vs Static Linking
OPTION(DYNAMIC_OPENSCENEGRAPH "Set to ON to build OpenSceneGraph for dynamic linking.  Use OFF for static." ON)
IF   (DYNAMIC_OPENSCENEGRAPH)
    SET(OPENSCENEGRAPH_USER_DEFINED_DYNAMIC_OR_STATIC "SHARED")
ELSE ()
    SET(OPENSCENEGRAPH_USER_DEFINED_DYNAMIC_OR_STATIC "STATIC")
ENDIF()


# OSG Core
ADD_SUBDIRECTORY(src)

IF   (BUILD_OSG_APPLICATIONS AND NOT ANDROID)
    ADD_SUBDIRECTORY(applications)
ENDIF()

IF   (BUILD_OSG_EXAMPLES)
    ADD_SUBDIRECTORY(examples)
ENDIF()


IF(APPLE AND NOT ANDROID)

        #Here we check if the user specified IPhone SDK
    IF(OSG_BUILD_PLATFORM_IPHONE OR OSG_BUILD_PLATFORM_IPHONE_SIMULATOR)

        #set iphone arch and flags taken from http://sites.google.com/site/michaelsafyan/coding/resources/how-to-guides/cross-compile-for-the-iphone/how-to-cross-compile-for-the-iphone-using-cmake
        IF(OSG_BUILD_PLATFORM_IPHONE)
            IF(${IPHONE_VERSION_MIN} LESS "7.0")
                SET(CMAKE_OSX_ARCHITECTURES "armv6;armv7" CACHE STRING "Build architectures for iOS" FORCE)
                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mno-thumb -pipe -no-cpp-precomp" CACHE STRING "Flags used by the compiler during all build types." FORCE)
            ELSE()
                SET(CMAKE_OSX_ARCHITECTURES "armv7;armv7s;arm64" CACHE STRING "Build architectures for iOS" FORCE)
                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pipe -no-cpp-precomp" CACHE STRING "Flags used by the compiler during all build types." FORCE)
            ENDIF()

            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -miphoneos-version-min=${IPHONE_VERSION_MIN}" FORCE)

        ELSE()
            #simulator uses i386 architectures
            SET(CMAKE_OSX_ARCHITECTURES "i386" CACHE STRING "Build architectures for iOS Simulator" FORCE)
            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mno-thumb -arch i386 -pipe -no-cpp-precomp" CACHE STRING "Flags used by the compiler during all build types." FORCE)

            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mios-simulator-version-min=${IPHONE_VERSION_MIN}" FORCE)

        ENDIF()

        #here we set the specific iphone sdk version. We can only set either device or simulator sdk. So if you want both you currently have to have two seperate projects
        SET(CMAKE_OSX_SYSROOT "${IPHONE_SDKROOT}" CACHE STRING "System root for iOS" FORCE)

        #hack, force link to opengles
        set(CMAKE_EXE_LINKER_FLAGS "-framework Foundation -framework OpenGLES")

        #use the IPhone windowing system
        SET(OSG_WINDOWING_SYSTEM "IOS" CACHE STRING "Forced IPhone windowing system on iOS"  FORCE)
        SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio" CACHE STRING "Forced imageio default image plugin for iOS" FORCE)

        #I think this or similar will be required for IPhone apps
        OPTION(OSG_BUILD_APPLICATION_BUNDLES "Enable the building of applications and examples as OSX Bundles" ON)

    ELSE()

        # Set defaults for Universal Binaries. We want 32-bit Intel/PPC on 10.4
        # and 32/64-bit Intel/PPC on >= 10.5. Anything <= 10.3 doesn't support.

        # These are just defaults/recommendations, but how we want to build
        # out of the box. But the user needs to be able to change these options.
        # So we must only set the values the first time CMake is run, or we
        # will overwrite any changes the user sets.
        # FORCE is used because the options are not reflected in the UI otherwise.
        # Seems like a good place to add version specific compiler flags too.
        IF(NOT OSG_CONFIG_HAS_BEEN_RUN_BEFORE)
            IF(${OSG_OSX_SDK_NAME} STREQUAL "macosx10.8" OR ${OSG_OSX_SDK_NAME} STREQUAL "macosx10.9" OR ${OSG_OSX_SDK_NAME} STREQUAL "macosx10.10")
                SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio" CACHE STRING "Forced imageio default image plugin for OSX" FORCE)
                # 64 Bit Works, i386,ppc is not supported any more
                SET(CMAKE_OSX_ARCHITECTURES "x86_64" CACHE STRING "Build architectures for OSX" FORCE)
                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.8 -fvisibility-inlines-hidden" CACHE STRING "Flags used by the compiler during all build types." FORCE)
            ELSEIF(${OSG_OSX_SDK_NAME} STREQUAL "macosx10.7")
                SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio" CACHE STRING "Forced imageio default image plugin for OSX" FORCE)<commit_msg>Cleaned up OSX option selection code.<commit_after>set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS TRUE)
set_property(GLOBAL PROPERTY USE_FOLDERS ON)

IF(WIN32)
    CMAKE_MINIMUM_REQUIRED(VERSION 2.4.6 FATAL_ERROR)
ELSE(WIN32)
    IF(APPLE)
        CMAKE_MINIMUM_REQUIRED(VERSION 2.6.0 FATAL_ERROR)
    ELSE(APPLE)
        CMAKE_MINIMUM_REQUIRED(VERSION 2.4.4 FATAL_ERROR)
    ENDIF(APPLE)
ENDIF(WIN32)

if(COMMAND cmake_policy)
    # Works around warnings libraries linked against that don't
    # have absolute paths (e.g. -lpthreads)
    cmake_policy(SET CMP0003 NEW)

    # Works around warnings about escaped quotes in ADD_DEFINITIONS
    # statements.
    cmake_policy(SET CMP0005 NEW)

    # tell CMake to prefer CMake's own CMake modules when available
    # only available from cmake-2.8.4
    if(${CMAKE_MAJOR_VERSION} GREATER 2 OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} GREATER 8) OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 8 AND ${CMAKE_PATCH_VERSION} GREATER 3))
        cmake_policy(SET CMP0017 NEW)
    endif()

    # cmake-2.6.1 introduces policy cmp0008 decide how to treat full path libraries that do not appear to be valid library file names
    # quote from cvslog "Such libraries worked by accident in the VS IDE and Xcode generators in CMake 2.4 and below."
    if(${CMAKE_MAJOR_VERSION} GREATER 2 OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} GREATER 6) OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 6 AND ${CMAKE_PATCH_VERSION} GREATER 0))
        cmake_policy(SET CMP0008 OLD)
    endif()

    # disable autolinking to qtmain as we have our own main() functions (new in Qt 5.1)
    if(${CMAKE_MAJOR_VERSION} GREATER 2 OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} GREATER 8) OR
        (${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 8 AND ${CMAKE_PATCH_VERSION} GREATER 10))
        cmake_policy(SET CMP0020 OLD)
    endif()
    # nicer version check - but needs at least CMake 2.6.2? Worth upgrading the requirements?
    #if("${CMAKE_VERSION}" VERSION_GREATER 2.8.10)
    # or even easier (available in cmake-2.6)
    #if(POLICY CMPxyzw)

endif()

PROJECT(OpenSceneGraph)

SET(OPENSCENEGRAPH_MAJOR_VERSION 3)
SET(OPENSCENEGRAPH_MINOR_VERSION 5)
SET(OPENSCENEGRAPH_PATCH_VERSION 1)
SET(OPENSCENEGRAPH_SOVERSION 141)

# set to 0 when not a release candidate, non zero means that any generated
# svn tags will be treated as release candidates of given number
SET(OPENSCENEGRAPH_RELEASE_CANDIDATE 0)

SET(OPENSCENEGRAPH_VERSION ${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINOR_VERSION}.${OPENSCENEGRAPH_PATCH_VERSION})

SET(OSG_PLUGINS osgPlugins-${OPENSCENEGRAPH_VERSION})

SET(OSG_PLUGIN_PREFIX "")

IF (CYGWIN)
    SET(OSG_PLUGIN_PREFIX "cygwin_")
ENDIF()

IF(MINGW)
    SET(OSG_PLUGIN_PREFIX "mingw_")
ENDIF()


# We want to build SONAMES shared librariess
SET(OPENSCENEGRAPH_SONAMES TRUE)
SET(OPENTHREADS_SONAMES TRUE)

SET(OpenThreads_SOURCE_DIR ${OpenSceneGraph_SOURCE_DIR})

# We have some custom .cmake scripts not in the official distribution.
# Maybe this can be used override existing behavior if needed?
SET(CMAKE_MODULE_PATH "${OpenSceneGraph_SOURCE_DIR}/CMakeModules;${CMAKE_MODULE_PATH}")

# Change the default build type to Release
IF(NOT CMAKE_BUILD_TYPE)
    SET(CMAKE_BUILD_TYPE Release CACHE STRING "Choose the type of build, options are: None Debug Release RelWithDebInfo MinSizeRel." FORCE)
ENDIF(NOT CMAKE_BUILD_TYPE)


IF(ANDROID)
    INCLUDE(OsgAndroidMacroUtils)
ENDIF()

# Okay, here's the problem: On some platforms, linking against OpenThreads
# is not enough and explicit linking to the underlying thread library
# is also required (e.g. FreeBSD). But OpenThreads may be built with different
# backends (Pthreads, Sproc, Windows) so we don't know what the underlying
# thread library is because some platforms support multiple backends (e.g.
# IRIX supports Sproc and Pthreads). Linking all libraries won't work
# because the libraries may be incompatible.
# So the current solution is to attempt best guess linking and exempt certain
# cases. With IRIX, we're going to hope explicit linking to the underlying
# library is not necessary. We currently don't case for pthreads on Windows
# which might be an issue on things like Cygwin. This may need to be fixed.
IF(NOT ANDROID)
    FIND_PACKAGE(Threads)
ENDIF()
IF(CMAKE_SYSTEM MATCHES IRIX)
    # Erase CMAKE_THREAD_LIBS_INIT and hope it works
    SET(CMAKE_THREAD_LIBS_INIT "" CACHE INTERNAL "")
ENDIF()

OPTION(OSG_MAINTAINER "Enable OpenSceneGraph maintainer build methods, such as making svn branches, tags, updating ChangeLog." OFF)
IF (OSG_MAINTAINER)

    SET(OPENSCENEGRAPH_SVN "trunk")
    #SET(OPENSCENEGRAPH_SVN "branches")
    SET(OPENSCENEGRAPH_BRANCH OpenSceneGraph-${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINOR_VERSION})

    #
    # Provide target for tagging a release
    #
    SET(SVNCOMMAND svn)
    SET(SVNTRUNKDIR     http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk)
    SET(SVNTAGDIR       http://svn.openscenegraph.org/osg/OpenSceneGraph/tags)
    SET(SVNBRANCHDIR    http://svn.openscenegraph.org/osg/OpenSceneGraph/branches)

    IF   (OPENSCENEGRAPH_SVN STREQUAL "trunk")
        SET(SVNSOURCEDIR ${SVNTRUNKDIR})
    ELSE()
        SET(SVNSOURCEDIR ${SVNBRANCHDIR}/${OPENSCENEGRAPH_BRANCH})
    ENDIF()


    IF   (OPENSCENEGRAPH_RELEASE_CANDIDATE EQUAL 0)
        SET(RELEASE_NAME OpenSceneGraph-${OPENSCENEGRAPH_VERSION})
    ELSE()
        SET(RELEASE_NAME OpenSceneGraph-${OPENSCENEGRAPH_VERSION}-rc${OPENSCENEGRAPH_RELEASE_CANDIDATE})
    ENDIF()


    ADD_CUSTOM_TARGET(tag-test
        COMMAND echo ${SVNCOMMAND} copy ${SVNSOURCEDIR} ${SVNTAGDIR}/${RELEASE_NAME} -m "Release ${RELEASE_NAME}"
    )

    ADD_CUSTOM_TARGET(tag-run
        COMMAND ${SVNCOMMAND} copy ${SVNSOURCEDIR} ${SVNTAGDIR}/${RELEASE_NAME} -m "Release ${RELEASE_NAME}"
    )

    ADD_CUSTOM_TARGET(branch-test
        COMMAND echo ${SVNCOMMAND} copy ${SVNSOURCEDIR} ${SVNBRANCHDIR}/${OPENSCENEGRAPH_BRANCH} -m "Branch ${OPENSCENEGRAPH_BRANCH}"
    )

    ADD_CUSTOM_TARGET(branch-run
        COMMAND ${SVNCOMMAND} copy ${SVNSOURCEDIR} ${SVNBRANCHDIR}/${OPENSCENEGRAPH_BRANCH} -m "Branch ${OPENSCENEGRAPH_BRANCH}"
    )

    #
    # Provide target for generating ChangeLog
    #
    SET(GENERATELOGS svn2cl)

    ADD_CUSTOM_TARGET(ChangeLog
        COMMAND ${SVNCOMMAND} update
        COMMAND ${GENERATELOGS} ${SVNSOURCEDIR}
    )

ENDIF(OSG_MAINTAINER)

IF(NOT ANDROID)
IF(APPLE)
    # Determine the canonical name of the selected Platform SDK
    EXECUTE_PROCESS(COMMAND "/usr/bin/sw_vers" "-productVersion"
                    OUTPUT_VARIABLE OSG_OSX_SDK_NAME
                    OUTPUT_STRIP_TRAILING_WHITESPACE)
    STRING(REPLACE "." ";" MACOS_VERSION_LIST ${OSG_OSX_SDK_NAME})
    LIST(GET MACOS_VERSION_LIST 0 MACOS_VERSION_MAJOR)
    LIST(GET MACOS_VERSION_LIST 1 MACOS_VERSION_MINOR)

    SET(OSG_OSX_SDK_NAME "macosx${MACOS_VERSION_MAJOR}.${MACOS_VERSION_MINOR}")

    # Trying to get CMake to generate an XCode IPhone project, current efforts are to get iphoneos sdk 3.1 working
    # Added option which needs manually setting to select the IPhone SDK for building. We can only have one of the below
    # set to true. Should realy have an OSG_BUILD_PLATFORM variable that we set to our desired platform
    OPTION(OSG_BUILD_PLATFORM_IPHONE "Enable IPhoneSDK Device support" OFF)
    OPTION(OSG_BUILD_PLATFORM_IPHONE_SIMULATOR "Enable IPhoneSDK Simulator support" OFF)

    IF(OSG_BUILD_PLATFORM_IPHONE OR OSG_BUILD_PLATFORM_IPHONE_SIMULATOR)

        #you need to manually set the default sdk version here
        SET (IPHONE_SDKVER "6.0" CACHE STRING "IOS SDK-Version")
        SET (IPHONE_VERSION_MIN "4.2" CACHE STRING "IOS minimum os version, use 7.0 or greater to get 64bit support")

        #the below is taken from ogre, it states the gcc stuff needs to happen before PROJECT() is called. I've no clue if we even need it
        # Force gcc <= 4.2 on iPhone
        IF(IPHONE_VERSION_MIN LESS "6.0")
            include(CMakeForceCompiler)
            CMAKE_FORCE_C_COMPILER(llvm-gcc-4.2 GNU)
            CMAKE_FORCE_CXX_COMPILER(llvm-gcc-4.2 GNU)
            SET(GCC_THUMB_SUPPORT NO)
        ENDIF()

        #set either the device sdk or the simulator sdk. Can't find away to separate these in the same project
        IF(OSG_BUILD_PLATFORM_IPHONE)
            SET (IPHONE_DEVROOT "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer")
            SET (IPHONE_SDKROOT "${IPHONE_DEVROOT}/SDKs/iPhoneOS${IPHONE_SDKVER}.sdk")
        ELSE()
            SET (IPHONE_DEVROOT "/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer")
            SET (IPHONE_SDKROOT "${IPHONE_DEVROOT}/SDKs/iPhoneSimulator${IPHONE_SDKVER}.sdk")
        ENDIF()

        # Apple iOS: Find OpenGLES
        FIND_LIBRARY(OPENGLES_LIBRARY OpenGLES)
    ELSE ()
        FIND_LIBRARY(CARBON_LIBRARY Carbon)
        FIND_LIBRARY(COCOA_LIBRARY Cocoa)

        # Apple OS X: Find OpenGL and AGL
        FIND_PACKAGE(OpenGL)
        FIND_LIBRARY(AGL_LIBRARY AGL)
    ENDIF ()

    OPTION(OSG_COMPILE_FRAMEWORKS "compile frameworks instead of dylibs (experimental)" OFF)
    SET(OSG_COMPILE_FRAMEWORKS_INSTALL_NAME_DIR "@executable_path/../Frameworks" CACHE STRING "install name dir for compiled frameworks")
ELSE()
    # Non-Apple: Find OpenGL
    FIND_PACKAGE(OpenGL)
ENDIF()
ENDIF()





IF(UNIX AND NOT ANDROID)
    # Not sure what this will do on Cygwin and Msys
    # Also, remember OS X X11 is a user installed option so it may not exist.
    FIND_PACKAGE(X11)
    # Some Unicies need explicit linkage to the Math library or the build fails.
    FIND_LIBRARY(MATH_LIBRARY m)

    FIND_LIBRARY(DL_LIBRARY dl)
    IF(NOT DL_LIBRARY)
        SET(DL_LIBRARY "") # change from NOTFOUND to empty when passed to linker
    ENDIF()

    IF( CMAKE_SYSTEM MATCHES "Linux" )
        FIND_LIBRARY( RT_LIBRARY rt )
    ENDIF( CMAKE_SYSTEM MATCHES "Linux" )

ENDIF()

INCLUDE_DIRECTORIES(
    ${OpenSceneGraph_SOURCE_DIR}/include
    ${OPENGL_INCLUDE_DIR}
)

# Make the headers visible to everything
IF(NOT ${PROJECT_BINARY_DIR} EQUAL ${PROJECT_SOURCE_DIR})
   INCLUDE_DIRECTORIES(${PROJECT_BINARY_DIR}/include)
ENDIF()

# Common global definitions
#ADD_DEFINITIONS(-D)
# Platform specific definitions


IF(WIN32 AND NOT ANDROID)

    IF(MSVC)
        # This option is to enable the /MP switch for Visual Studio 2005 and above compilers
        OPTION(WIN32_USE_MP "Set to ON to build OpenSceneGraph with the /MP option (Visual Studio 2005 and above)." OFF)
        MARK_AS_ADVANCED(WIN32_USE_MP)
        IF(WIN32_USE_MP)
            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
        ENDIF(WIN32_USE_MP)

        # turn off various warnings
        # foreach(warning 4244 4251 4267 4275 4290 4786 4305 4996)
        #     SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /wd${warning}")
        # endforeach(warning)

        # This option is to enable the /DYNAMICBASE switch
        # It is used to workaround a bug in Windows 7 when linking in release, which results in corrupt
        # binaries. See this page for details: http://www.wintellect.com/CS/blogs/jrobbins/archive/2009/01/24/the-case-of-the-corrupt-pe-binaries.aspx
        OPTION(WIN32_USE_DYNAMICBASE "Set to ON to build OpenSceneGraph with the /DYNAMICBASE option to work around a bug when linking release executables on Windows 7." OFF)
        MARK_AS_ADVANCED(WIN32_USE_DYNAMICBASE)
        IF(WIN32_USE_DYNAMICBASE)
            SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /DYNAMICBASE")
        ENDIF(WIN32_USE_DYNAMICBASE)

        # More MSVC specific compilation flags
        ADD_DEFINITIONS(-D_SCL_SECURE_NO_WARNINGS)
        ADD_DEFINITIONS(-D_CRT_SECURE_NO_DEPRECATE)

        OPTION(MSVC_DISABLE_CHECKED_ITERATORS "Set to ON to disable Visual C++ checked iterators. If you do this you must ensure that every other project in your solution and all dependencies are compiled with _SECURE_SCL=0." OFF)
        MARK_AS_ADVANCED(MSVC_DISABLE_CHECKED_ITERATORS)
        IF(MSVC_DISABLE_CHECKED_ITERATORS)
            ADD_DEFINITIONS(-D_SECURE_SCL=0)
        ENDIF(MSVC_DISABLE_CHECKED_ITERATORS)

        OPTION(MSVC_USE_DEFAULT_STACK_SIZE "Set to ON to use the default Visual C++ stack size. CMake forces a high stack size by default, which can cause problems for applications with large number of threads." OFF)
        MARK_AS_ADVANCED(MSVC_USE_DEFAULT_STACK_SIZE)
        IF(MSVC_USE_DEFAULT_STACK_SIZE)
            STRING(REGEX REPLACE "/STACK:[0-9]+" "" CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
            STRING(REGEX REPLACE "/STACK:[0-9]+" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
            STRING(REGEX REPLACE "/STACK:[0-9]+" "" CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS}")
        ENDIF(MSVC_USE_DEFAULT_STACK_SIZE)
        get_filename_component( CMAKE_MAKE_PROGRAM_NAME ${CMAKE_MAKE_PROGRAM} NAME)
        IF (CMAKE_MAKE_PROGRAM_NAME STREQUAL "VCExpress.exe")
            OPTION(MSVC_BUILD_USE_SOLUTION_FOLDERS "Enable project grouping in VS - VCExpress detected, not supported in VCExpress )" OFF)
        ELSE()
            OPTION(MSVC_BUILD_USE_SOLUTION_FOLDERS "Enable project grouping in VS" ON)
        ENDIF()
        SET_PROPERTY(GLOBAL PROPERTY USE_FOLDERS ${MSVC_BUILD_USE_SOLUTION_FOLDERS})
    ENDIF()

    #needed for net plugin
    SET (OSG_SOCKET_LIBS wsock32)
    # Both Cygwin and Msys need -DNOMINMAX ???
    IF(UNIX)
        ADD_DEFINITIONS(-DNOMINMAX)
    ENDIF()

########################################################################################################
# the following options are MSVC specific,
# the first OSG_MSVC_VERSIONED_DLL activate a custom build-time layout that should allow to run examples and application
# fron bin folder without requiring installation step.
# it also prepend "osg${OPENSCENEGRAPH_SOVERSION}-" to only .dll files, leaving .lib files untouched in lib
# it also use a hack to get rid of Debug and Release folder in MSVC projects
# all the .dll and .pdb are in bin and all the .lib and .exp are in lib
#
# the second option disable incremental linking in debug build , that is enabled by default by CMake
##########################################################################################################

    IF(MSVC)
        IF(${CMAKE_MAJOR_VERSION} EQUAL 2 AND ${CMAKE_MINOR_VERSION} EQUAL 4 AND ${CMAKE_PATCH_VERSION} LESS 7)
            MESSAGE("Warning:  disabling versioned options 2.4.6 exibits inconsintencies in .pdb naming, at least under MSVC, suggested upgrading at least to 2.4.7")
            SET(OSG_MSVC_VERSIONED_DLL OFF)
            SET(OSG_MSVC_DEBUG_INCREMENTAL_LINK ON)
        ELSE()
            OPTION(OSG_MSVC_VERSIONED_DLL "Set to ON to build OpenSceneGraph with versioned dll names" ON)
            MARK_AS_ADVANCED(OSG_MSVC_VERSIONED_DLL)
            OPTION(OSG_MSVC_DEBUG_INCREMENTAL_LINK "Set to OFF to build OpenSceneGraph without incremental linking in debug (release is off by default)" ON)
            MARK_AS_ADVANCED(OSG_MSVC_DEBUG_INCREMENTAL_LINK)
            IF(NOT OSG_MSVC_DEBUG_INCREMENTAL_LINK)
                SET(CMAKE_MODULE_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
                SET(CMAKE_SHARED_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
                SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "/debug /INCREMENTAL:NO")
            ENDIF(NOT OSG_MSVC_DEBUG_INCREMENTAL_LINK)
        ENDIF()
    ENDIF(MSVC)
ENDIF(WIN32 AND NOT ANDROID)

########################################################################################################
##### these were settings located in SetupCommon.cmake used in Luigi builds.... find out what are useful
########################################################################################################
#luigi#SET(CMAKE_VERBOSE_MAKEFILE TRUE)
#luigi#SET(CMAKE_SKIP_RPATH TRUE)
#luigi#SET(CMAKE_SKIP_RULE_DEPENDENCY TRUE)
#luigi#IF(UNIX)
#luigi#    LIST_CONTAINS(contains "g++" ${CMAKE_CXX_COMPILER_LIST})
#luigi#    IF (contains)
#luigi#        MESSAGE(${MY_MESSAGE_DEFAULT} "${CMAKE_CURRENT_LIST_FILE}:${CMAKE_CURRENT_LIST_LINE} setting  CMAKE_CXX_COMPILER to g++")
#luigi#        SET(CMAKE_CXX_COMPILER "g++")
#luigi#        SET(CMAKE_CXX_COMPILER_LOADED 2)
#luigi#        SET(CMAKE_CXX_COMPILER_WORKS 2)
#luigi#    ENDIF (contains)
#luigi#    SET(CMAKE_CXX_FLAGS_RELEASE "-O2")
#luigi#    SET(CMAKE_CXX_FLAGS_DEBUG "-ggdb -gstabs")
#luigi#ENDIF(UNIX)
########################################################################################################

OPTION(OSG_NOTIFY_DISABLED "Set to ON to build OpenSceneGraph with the notify() disabled." OFF)

OPTION(OSG_USE_FLOAT_MATRIX "Set to ON to build OpenSceneGraph with float Matrix instead of double." OFF)
MARK_AS_ADVANCED(OSG_USE_FLOAT_MATRIX)

OPTION(OSG_USE_FLOAT_PLANE "Set to ON to build OpenSceneGraph with float Plane instead of double." OFF)
MARK_AS_ADVANCED(OSG_USE_FLOAT_PLANE)

OPTION(OSG_USE_FLOAT_BOUNDINGSPHERE "Set to ON to build OpenSceneGraph with float BoundingSphere instead of double." ON)
MARK_AS_ADVANCED(OSG_USE_FLOAT_BOUNDINGSPHERE)

OPTION(OSG_USE_FLOAT_BOUNDINGBOX "Set to ON to build OpenSceneGraph with float BoundingBox instead of double." ON)
MARK_AS_ADVANCED(OSG_USE_FLOAT_BOUNDINGBOX)

IF (WIN32)
    OPTION(OSG_USE_UTF8_FILENAME "Set to ON to use a UTF8 locale for filenames instead of the default locale." OFF)
    MARK_AS_ADVANCED(OSG_USE_UTF8_FILENAME)
ENDIF()

OPTION(OSG_DISABLE_MSVC_WARNINGS "Set to OFF to not disable MSVC warnings generated by OSG headers." ON)
MARK_AS_ADVANCED(OSG_DISABLE_MSVC_WARNINGS)

OPTION(OSG_PROVIDE_READFILE "Set to ON for include/osgDB/ReadFile to provide the osgDB::read*File(() methods. " ON)
OPTION(OSG_USE_REF_PTR_IMPLICIT_OUTPUT_CONVERSION "Set to ON to use the ref_ptr<> T* operator() output conversion. " ON)


# Map the OPENGL_PROFILE to OSG_GL*_AVAILABLE settings
SET(OPENGL_PROFILE "GL2" CACHE STRING "OpenGL Profile to use, choose from GL1, GL2, GL3, GLES1, GLES2, GLES3")

IF ((OPENGL_PROFILE STREQUAL "GL1") OR (OPENGL_PROFILE STREQUAL "GL2"))
    OPTION(OSG_GL1_AVAILABLE "Set to OFF to disable use of OpenGL 1.x functions library." ON )
ELSE()
    OPTION(OSG_GL1_AVAILABLE "Set to OFF to disable use of OpenGL 1.x functions library." OFF )
ENDIF()

IF ((OPENGL_PROFILE STREQUAL "GL2"))
    OPTION(OSG_GL2_AVAILABLE "Set to OFF to disable use of OpenGL 2.x functions library." ON )
ELSE()
    OPTION(OSG_GL2_AVAILABLE "Set to OFF to disable use of OpenGL 2.x functions library." OFF )
ENDIF()

IF ((OPENGL_PROFILE STREQUAL "GL3") OR (OPENGL_PROFILE STREQUAL "GLCORE"))
    OPTION(OSG_GL3_AVAILABLE "Set to OFF to disable use of OpenGL 3.x functions library." ON )
ELSE()
    OPTION(OSG_GL3_AVAILABLE "Set to OFF to disable use of OpenGL 3.x functions library." OFF )
ENDIF()

IF ((OPENGL_PROFILE STREQUAL "GLES1"))
    OPTION(OSG_GLES1_AVAILABLE "Set to OFF to disable use of OpenGL ES 1.x functions library." ON )
ELSE()
    OPTION(OSG_GLES1_AVAILABLE "Set to OFF to disable use of OpenGL ES 1.x functions library." OFF )
ENDIF()

IF ((OPENGL_PROFILE STREQUAL "GLES2"))
    OPTION(OSG_GLES2_AVAILABLE "Set to OFF to disable use of OpenGL ES 2.x functions library." ON )
ELSEIF ((OPENGL_PROFILE STREQUAL "GLES3"))
    OPTION(OSG_GLES2_AVAILABLE "Set to OFF to disable use of OpenGL ES 2.x functions library." ON )
    OPTION(OSG_GLES3_AVAILABLE "Set to OFF to disable use of OpenGL ES 3.x functions library." ON )
ELSE()
    OPTION(OSG_GLES2_AVAILABLE "Set to OFF to disable use of OpenGL ES 2.x functions library." OFF )
    OPTION(OSG_GLES3_AVAILABLE "Set to OFF to disable use of OpenGL ES 3.x functions library." OFF )
ENDIF()


OPTION(OSG_GL_LIBRARY_STATIC "Set to ON to statically link with OpenGL/GLES library." OFF)

SET(OPENGL_egl_LIBRARY CACHE STRING "Set the OpenGL egl library.")

# Map the OSG_GL*_AVAILABLE settings to OSG_GL_* settings
IF (OSG_GLES2_AVAILABLE OR OSG_GL3_AVAILABLE)
    OPTION(OSG_GL_DISPLAYLISTS_AVAILABLE "Set to OFF to disable use of OpenGL display lists." OFF)
    OPTION(OSG_GL_MATRICES_AVAILABLE "Set to OFF to disable use of OpenGL built-in matrices." OFF)
    OPTION(OSG_GL_VERTEX_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertex/glColor etc." OFF)
    OPTION(OSG_GL_VERTEX_ARRAY_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertexPointer/glColorPointer etc." OFF)
    OPTION(OSG_GL_FIXED_FUNCTION_AVAILABLE "Set to OFF to disable use of OpenGL fixed function pipeline." OFF)
ELSEIF (OSG_GLES1_AVAILABLE)
    OPTION(OSG_GL_DISPLAYLISTS_AVAILABLE "Set to OFF to disable use of OpenGL display lists." OFF)
    OPTION(OSG_GL_MATRICES_AVAILABLE "Set to OFF to disable use of OpenGL built-in matrices." ON)
    OPTION(OSG_GL_VERTEX_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertex/glColor etc." ON)
    OPTION(OSG_GL_VERTEX_ARRAY_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertexPointer/glColorPointer etc." ON)
    OPTION(OSG_GL_FIXED_FUNCTION_AVAILABLE "Set to OFF to disable use of OpenGL fixed function pipeline." ON)
ELSE()
    OPTION(OSG_GL_DISPLAYLISTS_AVAILABLE "Set to OFF to disable use of OpenGL display lists." ON)
    OPTION(OSG_GL_MATRICES_AVAILABLE "Set to OFF to disable use of OpenGL built-in matrices." ON)
    OPTION(OSG_GL_VERTEX_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertex/glColor etc." ON)
    OPTION(OSG_GL_VERTEX_ARRAY_FUNCS_AVAILABLE "Set to OFF to disable use of OpenGL vertex functions such as glVertexPointer/glColorPointer etc." ON)
    OPTION(OSG_GL_FIXED_FUNCTION_AVAILABLE "Set to OFF to disable use of OpenGL fixed function pipeline." ON)
ENDIF()

IF (OSG_GLES1_AVAILABLE OR OSG_GLES2_AVAILABLE)
    OPTION(OSG_CPP_EXCEPTIONS_AVAILABLE "Set to OFF to disable compile of OSG components that use C++ exceptions." OFF)
ELSE()
    OPTION(OSG_CPP_EXCEPTIONS_AVAILABLE "Set to OFF to disable compile of OSG components that use C++ exceptions." ON)
ENDIF()


# Map the OSG_GL*_AVAILABLE settings to OpenGL header settings
IF (OSG_GL3_AVAILABLE)
    IF (APPLE)
        SET(OPENGL_HEADER1 "#include <OpenGL/gl.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "#include <OpenGL/gl3.h>" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ELSE()

        IF (OPENGL_PROFILE STREQUAL "GLCORE")
            IF(WIN32)
                FIND_PACKAGE(GLCORE REQUIRED)
            ENDIF()
            SET(OPENGL_HEADER1 "#include <GL/glcorearb.h>" CACHE STRING "#include<> line for OpenGL Header")
            SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
        ELSE()
            SET(OPENGL_HEADER1 "#include <GL3/gl3.h>" CACHE STRING "#include<> line for OpenGL Header")
            SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
        ENDIF()

    ENDIF()
ELSEIF(OSG_GLES1_AVAILABLE)
    IF (APPLE AND NOT ANDROID)
        SET(OPENGL_HEADER1 "#include \"TargetConditionals.h\"" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "#include <OpenGLES/ES1/gl.h>" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ELSE()
        SET(OPENGL_HEADER1 "#include <GLES/gl.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ENDIF()
ELSEIF(OSG_GLES2_AVAILABLE)
    IF (APPLE AND NOT ANDROID)
        SET(OPENGL_HEADER1 "#include \"TargetConditionals.h\"" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "#include <OpenGLES/ES2/gl.h>" CACHE STRING "#include<> line for additional OpenGL Headers if required")
        # TODO: GLES3
    ELSE()
        SET(OPENGL_HEADER1 "#include <GLES2/gl2.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
        # TODO: GLES3
    ENDIF()
ELSE()
    IF (APPLE)
        SET(OPENGL_HEADER1 "#include <OpenGL/gl.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ELSE()
        SET(OPENGL_HEADER1 "#include <GL/gl.h>" CACHE STRING "#include<> line for OpenGL Header")
        SET(OPENGL_HEADER2 "" CACHE STRING "#include<> line for additional OpenGL Headers if required")
    ENDIF()
ENDIF()

IF (OSG_GL1_AVAILABLE)
    SET(OSG_GL1_FEATURES "true")
ELSE()
    SET(OSG_GL1_FEATURES "false")
ENDIF()

IF (OSG_GL2_AVAILABLE)
    SET(OSG_GL2_FEATURES "true")
ELSE()
    SET(OSG_GL2_FEATURES "false")
ENDIF()

IF (OSG_GL3_AVAILABLE)
    SET(OSG_GL3_FEATURES "true")
ELSE()
    SET(OSG_GL3_FEATURES "false")
ENDIF()

IF (OSG_GLES1_AVAILABLE)
    SET(OSG_GLES1_FEATURES "true")
ELSE()
    SET(OSG_GLES1_FEATURES "false")
ENDIF()

IF (OSG_GLES2_AVAILABLE)
    SET(OSG_GLES2_FEATURES "true")
ELSE()
    SET(OSG_GLES2_FEATURES "false")
ENDIF()

IF (OSG_GLES3_AVAILABLE)
    SET(OSG_GLES3_FEATURES "true")
ELSE()
    SET(OSG_GLES3_FEATURES "false")
ENDIF()

IF(ANDROID)
    IF(OSG_GLES1_AVAILABLE)
        FIND_PATH(OPENGL_INCLUDE_DIR GLES/gl.h
              PATHS
              ${ANDROID_SYSROOT}/usr/include)
        FIND_LIBRARY(OPENGL_gl_LIBRARY  GLESv1_CM
                 PATHS
                     ${ANDROID_SYSROOT}/usr/lib)
    ELSEIF(OSG_GLES2_AVAILABLE)
        FIND_PATH(OPENGL_INCLUDE_DIR GLES2/gl2.h
              PATHS
              ${ANDROID_SYSROOT}/usr/include)
        FIND_LIBRARY(OPENGL_gl_LIBRARY  GLESv2
                 PATHS
                     ${ANDROID_SYSROOT}/usr/lib)
    ENDIF()
ENDIF()


################################################################################
# Set Config header file

SET(OPENSCENEGRAPH_CONFIG_HEADER "${PROJECT_BINARY_DIR}/include/osg/Config")
CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/Config.in"
               "${OPENSCENEGRAPH_CONFIG_HEADER}")


################################################################################
# Set OpenGL header file

INCLUDE (CheckCXXSourceCompiles)
#SET(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} ${OPENGL_INCLUDE_DIR})

check_cxx_source_compiles(
    "${OPENGL_HEADER1}
    ${OPENGL_HEADER2}
    int main() { GLint64 test; return 0; }"
    GL_HEADER_HAS_GLINT64
)

check_cxx_source_compiles(
    "${OPENGL_HEADER1}
    ${OPENGL_HEADER2}
    int main() { GLuint64 test; return 0; }"
    GL_HEADER_HAS_GLUINT64
)

SET(OPENSCENEGRAPH_OPENGL_HEADER "${PROJECT_BINARY_DIR}/include/osg/GL")
CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/GL.in"
               "${OPENSCENEGRAPH_OPENGL_HEADER}")

# INSTALL_FILES(/include/osg/ FILES "${OPENSCENEGRAPH_CONFIG_HEADER}")


################################################################################
# Set Version header file

SET(OPENSCENEGRAPH_VERSION_HEADER "${PROJECT_BINARY_DIR}/include/osg/Version")
CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/src/osg/Version.in"
               "${OPENSCENEGRAPH_VERSION_HEADER}")

################################################################################
# Set Version Info resource file


IF(MSVC)
    SET(OPENSCENEGRAPH_VERSIONINFO_RC "${PROJECT_BINARY_DIR}/PlatformSpecifics/Windows/OpenSceneGraphVersionInfo.rc")
    CONFIGURE_FILE("${CMAKE_CURRENT_SOURCE_DIR}/PlatformSpecifics/Windows/OpenSceneGraphVersionInfo.rc.in"
                   "${OPENSCENEGRAPH_VERSIONINFO_RC}")
ENDIF()

################################################################################
# Optional build components

# OSG Applications
OPTION(BUILD_OSG_APPLICATIONS "Enable to build OSG Applications (e.g. osgviewer)" ON)

# OSG Examples
OPTION(BUILD_OSG_EXAMPLES "Enable to build OSG Examples" OFF)

################################################################################
# 3rd Party Dependency Stuff
IF(WIN32 AND NOT ANDROID)
    INCLUDE(Find3rdPartyDependencies)
ENDIF()

OPTION(OSG_USE_LOCAL_LUA_SOURCE "Enable to use local Lua source when building the lua plugin" ON)

#
# If you want to prevent CMake from picking up on any of the following optional 3rd Party dependencies in CMake 2.8 onwards
# you can use the following style of command line option when invoking Cmake (here illustrating ignoring PythonLibs) :
# cmake -DCMAKE_DISABLE_FIND_PACKAGE_PythonLibs=1 .
#
IF(ANDROID)
    ANDROID_3RD_PARTY()
ELSE()
# Common to all platforms except android:
    FIND_PACKAGE(Freetype)
    FIND_PACKAGE(Inventor)
    FIND_PACKAGE(Jasper)
    FIND_PACKAGE(OpenEXR)
    FIND_PACKAGE(COLLADA)
    FIND_PACKAGE(FBX)
    FIND_PACKAGE(ZLIB)
    FIND_PACKAGE(Xine)
    FIND_PACKAGE(OpenVRML)
    FIND_PACKAGE(Performer)
    FIND_PACKAGE(GDAL)
    FIND_PACKAGE(GTA)
    FIND_PACKAGE(CURL)
    FIND_PACKAGE(LibVNCServer)
    FIND_PACKAGE(OurDCMTK)
    FIND_PACKAGE(FFmpeg)
    FIND_PACKAGE(GStreamer COMPONENTS app pbutils)
    FIND_PACKAGE(GLIB COMPONENTS gobject)
    FIND_PACKAGE(DirectShow)
    FIND_PACKAGE(SDL2)
    FIND_PACKAGE(SDL)
    FIND_PACKAGE(Poppler-glib)
    FIND_PACKAGE(RSVG)
    FIND_PACKAGE(GtkGl)
    FIND_PACKAGE(DirectInput)
    FIND_PACKAGE(NVTT)
    IF (NOT WIN32)
        FIND_PACKAGE(Asio)
    ENDIF()
    FIND_PACKAGE(ZeroConf)

    FIND_PACKAGE(LIBLAS)

    IF (NOT(OSG_USE_LOCAL_LUA_SOURCE))
        FIND_PACKAGE(Lua52)
        IF (NOT (LUA_LIBRARIES AND LUA_INCLUDE_DIR))
            FIND_PACKAGE(Lua51)
        ENDIF()
    ENDIF()

    # V8 and Python plugins are tests for linking against these libraries but aren't functionality beyond this.
    # FIND_PACKAGE(V8)
    # FIND_PACKAGE(PythonLibs)
ENDIF()

IF(CMAKE_MAJOR_VERSION EQUAL 2 AND CMAKE_MINOR_VERSION LESS 8)
    FIND_PACKAGE(ITK)
ENDIF()

# Include macro utilities here
INCLUDE(OsgMacroUtils)

OPTION(OSG_USE_QT "Enable to use Qt (build Qt-dependent libraries, plugins and examples)" ON)

IF(OSG_USE_QT AND NOT ANDROID)
# To select a specific version of QT define DESIRED_QT_VERSION
# via cmake -DDESIRED_QT_VERSION=5
# QUIET option disables messages if the package cannot be found.

    IF  (DESIRED_QT_VERSION)
        IF  (DESIRED_QT_VERSION MATCHES 5)
            FIND_PACKAGE(Qt5Widgets)
        ELSEIF (DESIRED_QT_VERSION MATCHES 4)
            FIND_PACKAGE(Qt4)
        ELSE()
            FIND_PACKAGE(Qt3)
        ENDIF()

    ELSE()

        FIND_PACKAGE(Qt5Widgets QUIET)

        IF ( Qt5Widgets_FOUND )
            # CMake 2.8.8 or greater required
            BUILDER_VERSION_GREATER(2 8 7)
            IF(NOT VALID_BUILDER_VERSION)
                MESSAGE(
                SEND_ERROR
                "Qt5 requires CMake version 2.8.8 or greater!\n"
                "Update CMake or set DESIRED_QT_VERSION to less than 5
                or disable OSG_USE_QT."
                )
            ENDIF( )
        ENDIF( )

        IF ( NOT Qt5Widgets_FOUND )
            FIND_PACKAGE(Qt4)

            IF (NOT QT4_FOUND)
                FIND_PACKAGE(Qt3)
            ENDIF()
        ENDIF()
    ENDIF()

    #If we have found Qt5, let's try to top off by getting the webkit as well
    IF ( Qt5Widgets_FOUND )
        FIND_PACKAGE(Qt5WebKitWidgets QUIET)

        IF(COMMAND cmake_policy)
            IF(${CMAKE_MAJOR_VERSION} GREATER 2)
                # Qt5 qt5_use_modules usage was causing "Policy CMP0043 is not set: Ignore COMPILE_DEFINITIONS_<Config> properties." warnings
                cmake_policy(SET CMP0043 NEW)
            ENDIF()
        ENDIF()
    ENDIF()

ENDIF()

#optional example related dependencies
IF   (BUILD_OSG_EXAMPLES AND NOT ANDROID)


    FIND_PACKAGE(FLTK)
    FIND_PACKAGE(GLUT)
    FIND_PACKAGE(FOX)

    SET(wxWidgets_USE_LIBS base core gl net)
    FIND_PACKAGE(wxWidgets)

ENDIF(BUILD_OSG_EXAMPLES AND NOT ANDROID)


# Platform specific:
# (We can approach this one of two ways. We can try to FIND everything
# and simply check if we found the packages before actually building
# or we can hardcode the cases. The advantage of the former is that
# packages that are installed on platforms that don't require them
# will still get built (presuming no compatibility issues). But this
# also means modules that are redundant may get built. For example,
# OS X doesn't need GIF, JPEG, PNG, TIFF, etc because it uses QuickTime.
# Also, it will clutter the CMake menu with "NOT_FOUND".
# The downside to the latter is that it is harder to build those
# potentially redundant modules.)

# Image readers/writers depend on 3rd party libraries except for OS X which
# can use Quicktime.
IF(NOT ANDROID)
    IF(NOT APPLE)
        FIND_PACKAGE(GIFLIB)
        FIND_PACKAGE(JPEG)
        FIND_PACKAGE(PNG)
        FIND_PACKAGE(TIFF)
        # QuickTime is required for OS X, but optional for Windows.
        IF(WIN32)
            FIND_PACKAGE(QuickTime)
        ENDIF()

    ELSE()
        FIND_PACKAGE(TIFF)
        FIND_PACKAGE(QuickTime)
        FIND_PACKAGE(QTKit)
        FIND_PACKAGE(CoreVideo)
        FIND_PACKAGE(CoreMedia)
        FIND_PACKAGE(QuartzCore)
        FIND_PACKAGE(AVFoundation)
    ENDIF()
ENDIF()

################################################################################
# Create bin and lib directories if required

IF("${CMAKE_SOURCE_DIR}" STREQUAL "${CMAKE_BINARY_DIR}")
   FILE(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/bin ${CMAKE_BINARY_DIR}/lib ${CMAKE_BINARY_DIR}/lib/${OSG_PLUGINS})
ENDIF()


################################################################################
# Installation stuff

SET(CMAKE_DEBUG_POSTFIX "d" CACHE STRING "add a postfix, usually d on windows")
SET(CMAKE_RELEASE_POSTFIX "" CACHE STRING "add a postfix, usually empty on windows")
SET(CMAKE_RELWITHDEBINFO_POSTFIX "rd" CACHE STRING "add a postfix, usually empty on windows")
SET(CMAKE_MINSIZEREL_POSTFIX "s" CACHE STRING "add a postfix, usually empty on windows")

# Set the build postfix extension according to what configuration is being built.
IF (CMAKE_BUILD_TYPE MATCHES "Release")
    SET(CMAKE_BUILD_POSTFIX "${CMAKE_RELEASE_POSTFIX}")
ELSEIF (CMAKE_BUILD_TYPE MATCHES "MinSizeRel")
    SET(CMAKE_BUILD_POSTFIX "${CMAKE_MINSIZEREL_POSTFIX}")
ELSEIF(CMAKE_BUILD_TYPE MATCHES "RelWithDebInfo")
    SET(CMAKE_BUILD_POSTFIX "${CMAKE_RELWITHDEBINFO_POSTFIX}")
ELSEIF(CMAKE_BUILD_TYPE MATCHES "Debug")
    SET(CMAKE_BUILD_POSTFIX "${CMAKE_DEBUG_POSTFIX}")
ELSE()
    SET(CMAKE_BUILD_POSTFIX "")
ENDIF()

IF(UNIX AND NOT WIN32)
  SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_DEBUG")
  SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG")
ENDIF()

IF(CYGWIN)
  SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -D_DEBUG")
  SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG")
ENDIF()

IF(UNIX AND NOT WIN32 AND NOT APPLE)
  IF(CMAKE_SIZEOF_VOID_P MATCHES "8")
      SET(LIB_POSTFIX "64" CACHE STRING "suffix for 32/64 dir placement")
      MARK_AS_ADVANCED(LIB_POSTFIX)
  ENDIF()
ENDIF()
IF(NOT DEFINED LIB_POSTFIX)
    SET(LIB_POSTFIX "")
ENDIF()

# Here we apparantly do some funky stuff with making the bin/ and lib/
# folders which is probably needed to work around a very old CMake bug?

#SET(OUTPUT_BINDIR ${PROJECT_BINARY_DIR}/bin/${CMAKE_SYSTEM_NAME})
SET(OUTPUT_BINDIR ${PROJECT_BINARY_DIR}/bin)
MAKE_DIRECTORY(${OUTPUT_BINDIR})
IF(MSVC AND NOT MSVC_IDE)
    MAKE_DIRECTORY(${OUTPUT_BINDIR}/${OSG_PLUGINS})
ENDIF(MSVC AND NOT MSVC_IDE)

#SET(OUTPUT_LIBDIR ${PROJECT_BINARY_DIR}/lib/${CMAKE_SYSTEM_NAME})
SET(OUTPUT_LIBDIR ${PROJECT_BINARY_DIR}/lib)
MAKE_DIRECTORY(${OUTPUT_LIBDIR})
IF(NOT MSVC OR MSVC_IDE)
    MAKE_DIRECTORY(${OUTPUT_LIBDIR}/${OSG_PLUGINS})
ENDIF(NOT MSVC OR MSVC_IDE)

# On CMake 2.4.x use EXECUTABLE_OUTPUT_PATH and LIBRARY_OUTPUT_PATH and later
# we work around the DLL placement by use of the PREFIX target property hack
#
# On CMake 2.6.x use the newly minted CMAKE_LIBRARY_OUTPUT_DIRECTORY,
# CMAKE_ARCHIVE_OUTPUT_DIRECTORY & CMAKE_RUNTIME_OUTPUT_DIRECTORY
#
# CMake >= 2.8.1 changed the output directory algorithm (See doc).
# Here we also set per-configuration directories (CMAKE_*_OUTPUT_DIRECTORY_<CONFIG>), or else binaries are generated in /bin/Debug and /bin/Release, etc. with MSVC and Xcode.
# (Doc reads "multi-configuration generators (VS, Xcode) do NOT append a per-configuration subdirectory to the specified directory").
# The workaround for 2.6.x (adding "../" as an output prefix for each target) seem to have no effect in >=2.8.1, so there is no need to change this.
IF(CMAKE_MAJOR_VERSION EQUAL 2 AND CMAKE_MINOR_VERSION LESS 5)
    # If CMake < 2.6.0
    SET(EXECUTABLE_OUTPUT_PATH ${OUTPUT_BINDIR})
    SET(LIBRARY_OUTPUT_PATH    ${OUTPUT_LIBDIR})
ELSE()
    # If CMake >= 2.6.0
    SET(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${OUTPUT_LIBDIR})
    SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${OUTPUT_BINDIR})
    IF(WIN32)
        SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${OUTPUT_BINDIR})
    ELSE(WIN32)
        SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${OUTPUT_LIBDIR})
    ENDIF(WIN32)

    # Testing CMAKE_VERSION is possible in >= 2.6.4 only
    BUILDER_VERSION_GREATER(2 8 0)
    IF(VALID_BUILDER_VERSION)  # If CMake >= 2.8.1
        FOREACH(CONF ${CMAKE_CONFIGURATION_TYPES})        # For each configuration (Debug, Release, MinSizeRel... and/or anything the user chooses)
            STRING(TOUPPER "${CONF}" CONF)                # Go uppercase (DEBUG, RELEASE...)
            SET("CMAKE_ARCHIVE_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_LIBDIR}")
            SET("CMAKE_RUNTIME_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_BINDIR}")
            IF(WIN32)
                SET("CMAKE_LIBRARY_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_BINDIR}")
            ELSE()
                SET("CMAKE_LIBRARY_OUTPUT_DIRECTORY_${CONF}" "${OUTPUT_LIBDIR}")
            ENDIF()
        ENDFOREACH()
    ENDIF(VALID_BUILDER_VERSION)
ENDIF()

#SET(INSTALL_BINDIR OpenSceneGraph/bin)
#SET(INSTALL_INCDIR OpenSceneGraph/include)
#SET(INSTALL_LIBDIR OpenSceneGraph/lib)
#SET(INSTALL_DOCDIR OpenSceneGraph/doc)

################################################################################
# User Options


# Expose CMAKE_INCLUDE_PATH and CMAKE_LIBARY_PATH to the GUI so users
# may set these values without needing to manipulate the environment.
SET(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} CACHE STRING "You may add additional search paths here. Use ; to separate multiple paths.")
SET(CMAKE_LIBRARY_PATH ${CMAKE_LIBRARY_PATH} CACHE STRING "You may add additional search paths here. Use ; to separate multiple paths.")
# We are proposing that a new variable called CMAKE_PREFIX_PATH be introduced
# to CMake to compliment CMAKE_INCLUDE_PATH and CMAKE_LIBRARY_PATH.
# A formal feature request has been submited to CMake, Bug #4947.
# It is intended for those users who have common prefixes for their INCLUDE
# and LIBRARY locations. So if users have headers in /usr/local/include
# and libraries in /usr/local/lib, the common prefix is /usr/local.
# It should also cover the case where headers and libraries are
# in the same directory.
# Our proposal expects that FIND_* commands will automatically search for
# CMAKE_PREFIX_PATH right after CMAKE_INCLUDE_PATH or CMAKE_LIBRARY_PATH.
# Obviously, since CMake does not currently support this, we must write
# our Find*.cmake modules to explicitly support this. Otherwise, this variable
# will have no impact.
# This is unofficial so this may be removed or changed at anytime.
SET(CMAKE_PREFIX_PATH ${CMAKE_PREFIX_PATH} CACHE STRING "(EXPERIMENTAL) You may add additional search paths here. Use ; to separate multiple paths.")

# This is for an advanced option to give aggressive warnings
# under different compilers. If yours is not implemented, this option
# will not be made available.
IF(CMAKE_COMPILER_IS_GNUCXX)
    # To be complete, we might also do GNUCC flags,
    # but everything here is C++ code.
    # -Wshadow and -Woverloaded-virtual are also interesting flags, but OSG
    # returns too many hits.
    # FYI, if we do implement GNUCC, then -Wmissing-prototypes in another
    # interesting C-specific flag.
    # Also, there is a bug in gcc 4.0. Under C++, -pedantic will create
    # errors instead of warnings for certain issues, including superfluous
    # semicolons and commas, and the use of long long. -fpermissive seems
    # to be the workaround.
    SET(OSG_AGGRESSIVE_WARNING_FLAGS -Wall -Wparentheses -Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces -Wunknown-pragmas -Wunused)

    # Previous included -Wformat=2 in OSG_AGGRESSIVE_WARNING_FLAGS but had to remove it due to standard library errors


ELSEIF(MSVC)
        #disable specific warning level 4 warnings:
        #C4100 'identifier' : unreferenced formal parameter
        #C4127 Error Message conditional expression is constant
        #C4706 assignment within conditional expression
        SET(OSG_AGGRESSIVE_WARNING_FLAGS /W4 /wd4706 /wd4127 /wd4100)
ELSEIF(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
        SET(OSG_AGGRESSIVE_WARNING_FLAGS  -Wall -Wparentheses -Wno-long-long -Wno-import -pedantic -Wreturn-type -Wmissing-braces -Wunknown-pragmas -Wunused -Wno-overloaded-virtual)

        # CMake lacks an elseif, so other non-gcc, non-VS compilers need
        # to be listed below. If unhandled, OSG_AGGRESSIVE_WARNING_FLAGS should
        # remain unset.

        IF (APPLE)
            SET(OSG_CXX_LANGUAGE_STANDARD "C++11" CACHE STRING "set the c++ language standard (C++98 / GNU++98 / C++11) for OSG" )
            MARK_AS_ADVANCED(OSG_CXX_LANGUAGE_STANDARD)
            # remove existing flags
            REMOVE_CXX_FLAG(-std=c++98)
            REMOVE_CXX_FLAG(-std=gnu++98)
            REMOVE_CXX_FLAG(-std=c++11)
            REMOVE_CXX_FLAG(-stdlib=libstdc++)
            REMOVE_CXX_FLAG(-stdlib=libc++)

            IF(${OSG_CXX_LANGUAGE_STANDARD} STREQUAL "c++98" OR ${OSG_CXX_LANGUAGE_STANDARD} STREQUAL "C++98")
                set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++98")
                set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libstdc++")
                set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++98 -stdlib=libstdc++")
            ELSE()
                IF(${OSG_CXX_LANGUAGE_STANDARD} STREQUAL "gnu++98" OR ${OSG_CXX_LANGUAGE_STANDARD} STREQUAL "GNU++98")
                    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "gnu++98")
                    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libstdc++")
                    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++98 -stdlib=libstdc++")
                ELSE()
                    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++11")
                    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
                    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -stdlib=libc++")
                ENDIF()
            ENDIF()

            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-overloaded-virtual -Wno-conversion")
            set(WARNING_CFLAGS "")
        ENDIF()
ENDIF()

# This part is for the CMake menu option to toggle the warnings on/off.
# This will only be made available if we set values for OSG_AGGRESSIVE_WARNING_FLAGS.
IF(OSG_AGGRESSIVE_WARNING_FLAGS)

    IF (APPLE)
        SET(DEFAULT_USE_AGGRESSIVE_WARNINGS OFF)
    ELSE()
        SET(DEFAULT_USE_AGGRESSIVE_WARNINGS ON)
    ENDIF()

    OPTION(OSG_USE_AGGRESSIVE_WARNINGS "Enable to activate aggressive warnings" ${DEFAULT_USE_AGGRESSIVE_WARNINGS})
    MARK_AS_ADVANCED(OSG_USE_AGGRESSIVE_WARNINGS)

    IF(OSG_USE_AGGRESSIVE_WARNINGS)
        # Add flags defined by OSG_AGGRESSIVE_WARNING_FLAGS if they aren't already there
        FOREACH(flag ${OSG_AGGRESSIVE_WARNING_FLAGS})
            IF(NOT CMAKE_CXX_FLAGS MATCHES "${flag}")
                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}")
            ENDIF()
        ENDFOREACH()
    ELSE()
        # Remove all flags considered aggresive
        FOREACH(flag ${OSG_AGGRESSIVE_WARNING_FLAGS})
            STRING(REGEX REPLACE "${flag}" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
        ENDFOREACH()
    ENDIF()
ENDIF()


# Dynamic vs Static Linking
OPTION(DYNAMIC_OPENSCENEGRAPH "Set to ON to build OpenSceneGraph for dynamic linking.  Use OFF for static." ON)
IF   (DYNAMIC_OPENSCENEGRAPH)
    SET(OPENSCENEGRAPH_USER_DEFINED_DYNAMIC_OR_STATIC "SHARED")
ELSE ()
    SET(OPENSCENEGRAPH_USER_DEFINED_DYNAMIC_OR_STATIC "STATIC")
ENDIF()


# OSG Core
ADD_SUBDIRECTORY(src)

IF   (BUILD_OSG_APPLICATIONS AND NOT ANDROID)
    ADD_SUBDIRECTORY(applications)
ENDIF()

IF   (BUILD_OSG_EXAMPLES)
    ADD_SUBDIRECTORY(examples)
ENDIF()


IF(APPLE AND NOT ANDROID)

        #Here we check if the user specified IPhone SDK
    IF(OSG_BUILD_PLATFORM_IPHONE OR OSG_BUILD_PLATFORM_IPHONE_SIMULATOR)

        #set iphone arch and flags taken from http://sites.google.com/site/michaelsafyan/coding/resources/how-to-guides/cross-compile-for-the-iphone/how-to-cross-compile-for-the-iphone-using-cmake
        IF(OSG_BUILD_PLATFORM_IPHONE)
            IF(${IPHONE_VERSION_MIN} LESS "7.0")
                SET(CMAKE_OSX_ARCHITECTURES "armv6;armv7" CACHE STRING "Build architectures for iOS" FORCE)
                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mno-thumb -pipe -no-cpp-precomp" CACHE STRING "Flags used by the compiler during all build types." FORCE)
            ELSE()
                SET(CMAKE_OSX_ARCHITECTURES "armv7;armv7s;arm64" CACHE STRING "Build architectures for iOS" FORCE)
                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pipe -no-cpp-precomp" CACHE STRING "Flags used by the compiler during all build types." FORCE)
            ENDIF()

            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -miphoneos-version-min=${IPHONE_VERSION_MIN}" FORCE)

        ELSE()
            #simulator uses i386 architectures
            SET(CMAKE_OSX_ARCHITECTURES "i386" CACHE STRING "Build architectures for iOS Simulator" FORCE)
            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mno-thumb -arch i386 -pipe -no-cpp-precomp" CACHE STRING "Flags used by the compiler during all build types." FORCE)

            SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mios-simulator-version-min=${IPHONE_VERSION_MIN}" FORCE)

        ENDIF()

        #here we set the specific iphone sdk version. We can only set either device or simulator sdk. So if you want both you currently have to have two seperate projects
        SET(CMAKE_OSX_SYSROOT "${IPHONE_SDKROOT}" CACHE STRING "System root for iOS" FORCE)

        #hack, force link to opengles
        set(CMAKE_EXE_LINKER_FLAGS "-framework Foundation -framework OpenGLES")

        #use the IPhone windowing system
        SET(OSG_WINDOWING_SYSTEM "IOS" CACHE STRING "Forced IPhone windowing system on iOS"  FORCE)
        SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio" CACHE STRING "Forced imageio default image plugin for iOS" FORCE)

        #I think this or similar will be required for IPhone apps
        OPTION(OSG_BUILD_APPLICATION_BUNDLES "Enable the building of applications and examples as OSX Bundles" ON)

    ELSE()

        # Set defaults for Universal Binaries. We want 32-bit Intel/PPC on 10.4
        # and 32/64-bit Intel/PPC on >= 10.5. Anything <= 10.3 doesn't support.

        # These are just defaults/recommendations, but how we want to build
        # out of the box. But the user needs to be able to change these options.
        # So we must only set the values the first time CMake is run, or we
        # will overwrite any changes the user sets.
        # FORCE is used because the options are not reflected in the UI otherwise.
        # Seems like a good place to add version specific compiler flags too.
        IF(NOT OSG_CONFIG_HAS_BEEN_RUN_BEFORE)
            IF(${MACOS_VERSION_MAJOR} EQUAL 10 AND ${MACOS_VERSION_MINOR} GREATER 7)
                SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio" CACHE STRING "Forced imageio default image plugin for OSX" FORCE)
                # 64 Bit Works, i386,ppc is not supported any more
                SET(CMAKE_OSX_ARCHITECTURES "x86_64" CACHE STRING "Build architectures for OSX" FORCE)
                SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.8 -fvisibility-inlines-hidden" CACHE STRING "Flags used by the compiler during all build types." FORCE)
            ELSEIF(${OSG_OSX_SDK_NAME} STREQUAL "macosx10.7")
                SET(OSG_DEFAULT_IMAGE_PLUGIN_FOR_OSX "imageio" CACHE STRING "Forced imageio default image plugin for OSX" FORCE)
{'fraction_non_alphanumeric': 0.10424288644069543, 'fraction_numerical': 0.011377572578401163, 'mean_word_length': 3.918592862935929, 'pattern_counts': {'":': 0, '<': 71, '<?xml version=': 0, '>': 77, 'https://': 0, 'lorem ipsum': 0, 'www.': 2, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 8, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '5580412', 'n_tokens_mistral': 34809, 'n_tokens_neox': 32293, 'n_words': 8694}