# This module defines

# OSG_LIBRARY
# OSG_FOUND, if false, do not try to link to osg
# OSG_INCLUDE_DIRS, where to find the headers
# OSG_INCLUDE_DIR, where to find the source headers
# OSG_GEN_INCLUDE_DIR, where to find the generated headers

# to use this module, set variables to point to the osg build
# directory, and source directory, respectively
# OSGDIR or OSG_SOURCE_DIR: osg source directory, typically OpenSceneGraph
# OSG_DIR or OSG_BUILD_DIR: osg build directory, place in which you've
#    built osg via cmake 

# Header files are presumed to be included like
# #include <osg/PositionAttitudeTransform>
# #include <osgUtil/SceneView>

###### headers ######

MACRO( FIND_OSG_INCLUDE THIS_OSG_INCLUDE_DIR THIS_OSG_INCLUDE_FILE )

FIND_PATH( ${THIS_OSG_INCLUDE_DIR} ${THIS_OSG_INCLUDE_FILE}
    PATHS
        $ENV{OSG_SOURCE_DIR}
        $ENV{OSGDIR}
        $ENV{OSG_DIR}
        $ENV{OSG_ROOT}
        ${OSG_DIR}
        ${CMAKE_INSTALL_PREFIX}
        ${CMAKE_PREFIX_PATH}
        /usr/local/
        /usr/
        /sw/ # Fink
        /opt/local/# DarwinPorts
        /opt/csw/# Blastwave
        /opt/
        /usr/freeware/
        [HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Session\ Manager\\Environment;OSG_ROOT]/
        ~/Library/Frameworks
        /Library/Frameworks
    PATH_SUFFIXES
        include
)

ENDMACRO( FIND_OSG_INCLUDE THIS_OSG_INCLUDE_DIR THIS_OSG_INCLUDE_FILE )

FIND_OSG_INCLUDE( OSG_GEN_INCLUDE_DIR   osg/Config )
FIND_OSG_INCLUDE( OSG_INCLUDE_DIR       osg/Node )

###### libraries ######

MACRO(FIND_OSG_LIBRARY MYLIBRARY MYLIBRARYNAME)

FIND_LIBRARY(${MYLIBRARY}
    NAMES
        ${MYLIBRARYNAME}
   PATHS
        $ENV{OSG_BUILD_DIR}
        $ENV{OSG_DIR}
        $ENV{OSGDIR}
        $ENV{OSG_ROOT}
        ~/Library/Frameworks
        /Library/Frameworks
        /usr/local
        /usr/
        /sw/
        /opt/local/
        /opt/csw/
        /opt/
        [HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Session\ Manager\\Environment;OSG_ROOT]/
        /usr/freeware/
    PATH_SUFFIXES
        lib
        lib64
        build/lib
        Build/lib
)

ENDMACRO(FIND_OSG_LIBRARY LIBRARY LIBRARYNAME)

FIND_OSG_LIBRARY(OSG_LIBRARY                osg)
FIND_OSG_LIBRARY( OSGGA_LIBRARY osgGA )
FIND_OSG_LIBRARY(OSGUTIL_LIBRARY            osgUtil)
FIND_OSG_LIBRARY(OSGDB_LIBRARY              osgDB)
FIND_OSG_LIBRARY(OSGTEXT_LIBRARY            osgText)
FIND_OSG_LIBRARY( OSGTERRAIN_LIBRARY osgTerrain )
FIND_OSG_LIBRARY( OSGFX_LIBRARY osgFX )
FIND_OSG_LIBRARY( OSGSIM_LIBRARY osgSim )
FIND_OSG_LIBRARY(OSGVIEWER_LIBRARY          osgViewer)

SET(OSG_FOUND "NO")
IF( OSG_LIBRARY AND OSG_INCLUDE_DIR AND OSG_GEN_INCLUDE_DIR )
    SET(OSG_FOUND "YES")
    SET( OSG_INCLUDE_DIRS ${OSG_INCLUDE_DIR} ${OSG_GEN_INCLUDE_DIR} )
    GET_FILENAME_COMPONENT( OSG_LIBRARIES_DIR ${OSG_LIBRARY} PATH )
ENDIF( OSG_LIBRARY AND OSG_INCLUDE_DIR AND OSG_GEN_INCLUDE_DIR )