#######################################################################################################
#  macro for linking libraries that come from Findxxxx commands, so there is a variable that contains the
#  full path of the library name. in order to differentiate release and debug, this macro get the
#  NAME of the variables, so the macro gets as arguments the target name and the following list of parameters
#  is intended as a list of variable names each one containing  the path of the libraries to link to
#  The existance of a varibale name with _DEBUG appended is tested and, in case it' s value is used
#  for linking to when in debug mode 
#  the content of this library for linking when in debugging
#######################################################################################################


MACRO(LINK_WITH_VARIABLES TRGTNAME)
    FOREACH(varname ${ARGN})
        IF(${varname}_DEBUG)
            TARGET_LINK_LIBRARIES(${TRGTNAME} optimized "${${varname}}" debug "${${varname}_DEBUG}")
        ELSE(${varname}_DEBUG)
            TARGET_LINK_LIBRARIES(${TRGTNAME} "${${varname}}" )
        ENDIF(${varname}_DEBUG)
    ENDFOREACH(varname)
ENDMACRO(LINK_WITH_VARIABLES TRGTNAME)

MACRO(LINK_INTERNAL TRGTNAME)
    FOREACH(LINKLIB ${ARGN})
        TARGET_LINK_LIBRARIES(${TRGTNAME} optimized "${LINKLIB}" debug "${LINKLIB}${CMAKE_DEBUG_POSTFIX}")
    ENDFOREACH(LINKLIB)
ENDMACRO(LINK_INTERNAL TRGTNAME)

MACRO(LINK_EXTERNAL TRGTNAME)
    FOREACH(LINKLIB ${ARGN})
        TARGET_LINK_LIBRARIES(${TRGTNAME} "${LINKLIB}" )
    ENDFOREACH(LINKLIB)
ENDMACRO(LINK_EXTERNAL TRGTNAME)


#######################################################################################################
#  macro for common setup of core libraries: it links OPENGL_LIBRARIES in undifferentiated mode
#######################################################################################################

MACRO(LINK_CORELIB_DEFAULT CORELIB_NAME)
    LINK_EXTERNAL(${CORELIB_NAME} ${OPENGL_LIBRARIES}) 
    LINK_WITH_VARIABLES(${CORELIB_NAME} OPENTHREADS_LIBRARY)
    IF(OPENSCENEGRAPH_SONAMES)
      SET_TARGET_PROPERTIES(${CORELIB_NAME} PROPERTIES VERSION ${OPENSCENEGRAPH_VERSION} SOVERSION ${OPENSCENEGRAPH_SOVERSION})
    ENDIF(OPENSCENEGRAPH_SONAMES)
ENDMACRO(LINK_CORELIB_DEFAULT CORELIB_NAME)


#######################################################################################################
#  macro for common setup of plugins, examples and applications it expect some variables to be set:
#  either within the local CMakeLists or higher in hierarchy
#  TARGET_NAME is the name of the folder and of the actually .exe or .so or .dll
#  TARGET_TARGETNAME  is the name of the target , this get buit out of a prefix, if present and TARGET_TARGETNAME
#  TARGET_SRC  are the sources of the target
#  TARGET_H are the eventual headers of the target
#  TARGET_LIBRARIES are the libraries to link to that are internal to the project and have d suffix for debug
#  TARGET_EXTERNAL_LIBRARIES are external libraries and are not differentiated with d suffix
#  TARGET_LABEL is the label IDE should show up for targets
##########################################################################################################

MACRO(SETUP_LINK_LIBRARIES)
    ######################################################################
    #
    # This set up the libraries to link to, it assumes there are two variable: one common for a group of examples or plagins
    # kept in the variable TARGET_COMMON_LIBRARIES and an example or plugin specific kept in TARGET_ADDED_LIBRARIES 
    # they are combined in a single list checked for unicity 
    # the suffix ${CMAKE_DEBUG_POSTFIX} is used for differentiating optimized and debug
    #
    # a second variable TARGET_EXTERNAL_LIBRARIES hold the list of  libraries not differentiated between debug and optimized 
    ##################################################################################
    SET(TARGET_LIBRARIES ${TARGET_COMMON_LIBRARIES})

    FOREACH(LINKLIB ${TARGET_ADDED_LIBRARIES})
      SET(TO_INSERT TRUE)
      FOREACH (value ${TARGET_COMMON_LIBRARIES})
            IF (${value} STREQUAL ${LINKLIB})
                  SET(TO_INSERT FALSE)
            ENDIF (${value} STREQUAL ${LINKLIB})
        ENDFOREACH (value ${TARGET_COMMON_LIBRARIES})
      IF(TO_INSERT)
          LIST(APPEND TARGET_LIBRARIES ${LINKLIB})
      ENDIF(TO_INSERT)
    ENDFOREACH(LINKLIB)

    FOREACH(LINKLIB ${TARGET_LIBRARIES})
            TARGET_LINK_LIBRARIES(${TARGET_TARGETNAME} optimized ${LINKLIB} debug "${LINKLIB}${CMAKE_DEBUG_POSTFIX}")
    ENDFOREACH(LINKLIB)

    FOREACH(LINKLIB ${TARGET_EXTERNAL_LIBRARIES})
            TARGET_LINK_LIBRARIES(${TARGET_TARGETNAME} ${LINKLIB})
    ENDFOREACH(LINKLIB)
        IF(TARGET_LIBRARIES_VARS)
            LINK_WITH_VARIABLES(${TARGET_TARGETNAME} ${TARGET_LIBRARIES_VARS})
        ENDIF(TARGET_LIBRARIES_VARS)
ENDMACRO(SETUP_LINK_LIBRARIES)

############################################################################################
# this is the common set of command for all the plugins
#

MACRO(SETUP_PLUGIN PLUGIN_NAME)

        SET(TARGET_NAME ${PLUGIN_NAME} )

    #MESSAGE("in -->SETUP_PLUGIN<-- ${TARGET_NAME}-->${TARGET_SRC} <--> ${TARGET_H}<--")

    ## we have set up the target label and targetname by taking into account global prfix (osgdb_)

    IF(NOT TARGET_TARGETNAME)
            SET(TARGET_TARGETNAME "${TARGET_DEFAULT_PREFIX}${TARGET_NAME}")
    ENDIF(NOT TARGET_TARGETNAME)
    IF(NOT TARGET_LABEL)
            SET(TARGET_LABEL "${TARGET_DEFAULT_LABEL_PREFIX} ${TARGET_NAME}")
    ENDIF(NOT TARGET_LABEL)
    
# here we use the command to generate the library    

    IF   (DYNAMIC_OPENSCENEGRAPH)
        ADD_LIBRARY(${TARGET_TARGETNAME} MODULE ${TARGET_SRC} ${TARGET_H})
    ELSE (DYNAMIC_OPENSCENEGRAPH)
        ADD_LIBRARY(${TARGET_TARGETNAME} STATIC ${TARGET_SRC} ${TARGET_H})
    ENDIF(DYNAMIC_OPENSCENEGRAPH)
    
    #not sure if needed, but for plugins only msvc need the d suffix
    IF(NOT MSVC)
        SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES DEBUG_POSTFIX "")
    ENDIF(NOT MSVC)
    SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES PROJECT_LABEL "${TARGET_LABEL}")
 
    SETUP_LINK_LIBRARIES()

#the installation path are differentiated for win32 that install in bib versus other architecture that install in lib${LIB_POSTFIX}/${OSG_PLUGINS}
    IF(WIN32)
        INSTALL(TARGETS ${TARGET_TARGETNAME} RUNTIME DESTINATION bin ARCHIVE DESTINATION lib LIBRARY DESTINATION bin )
    ELSE(WIN32)
        INSTALL(TARGETS ${TARGET_TARGETNAME} RUNTIME DESTINATION bin ARCHIVE DESTINATION lib${LIB_POSTFIX}/${OSG_PLUGINS} LIBRARY DESTINATION lib${LIB_POSTFIX}/${OSG_PLUGINS} )
    ENDIF(WIN32)
ENDMACRO(SETUP_PLUGIN)


#################################################################################################################
# this is the macro for example and application setup
###########################################################

MACRO(SETUP_EXE IS_COMMANDLINE_APP)
    #MESSAGE("in -->SETUP_EXE<-- ${TARGET_NAME}-->${TARGET_SRC} <--> ${TARGET_H}<--")
    IF(NOT TARGET_TARGETNAME)
            SET(TARGET_TARGETNAME "${TARGET_DEFAULT_PREFIX}${TARGET_NAME}")
    ENDIF(NOT TARGET_TARGETNAME)
    IF(NOT TARGET_LABEL)
            SET(TARGET_LABEL "${TARGET_DEFAULT_LABEL_PREFIX} ${TARGET_NAME}")
    ENDIF(NOT TARGET_LABEL)

    IF(${IS_COMMANDLINE_APP})
    
        ADD_EXECUTABLE(${TARGET_TARGETNAME} ${TARGET_SRC} ${TARGET_H})
        
    ELSE(${IS_COMMANDLINE_APP})
    
        IF(APPLE)
            # SET(MACOSX_BUNDLE_LONG_VERSION_STRING "${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINOR_VERSION}.${OPENSCENEGRAPH_PATCH_VERSION}")
            # Short Version is the "marketing version". It is the version
            # the user sees in an information panel.
            SET(MACOSX_BUNDLE_SHORT_VERSION_STRING "${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINOR_VERSION}.${OPENSCENEGRAPH_PATCH_VERSION}")
            # Bundle version is the version the OS looks at.
            SET(MACOSX_BUNDLE_BUNDLE_VERSION "${OPENSCENEGRAPH_MAJOR_VERSION}.${OPENSCENEGRAPH_MINOR_VERSION}.${OPENSCENEGRAPH_PATCH_VERSION}")
            SET(MACOSX_BUNDLE_GUI_IDENTIFIER "org.openscenegraph.${TARGET_TARGETNAME}" )
            SET(MACOSX_BUNDLE_BUNDLE_NAME "${TARGET_NAME}" )
            # SET(MACOSX_BUNDLE_ICON_FILE "myicon.icns")
            # SET(MACOSX_BUNDLE_COPYRIGHT "")
            # SET(MACOSX_BUNDLE_INFO_STRING "Info string, localized?")
        ENDIF(APPLE)

        IF(WIN32 AND REQUIRE_WINMAIN_FLAG)        
            ADD_EXECUTABLE(${TARGET_TARGETNAME} WIN32 ${TARGET_SRC} ${TARGET_H})
        ELSE(WIN32 AND REQUIRE_WINMAIN_FLAG)        
            ADD_EXECUTABLE(${TARGET_TARGETNAME} MACOSX_BUNDLE ${TARGET_SRC} ${TARGET_H})
        ENDIF(WIN32 AND REQUIRE_WINMAIN_FLAG)        
        
    ENDIF(${IS_COMMANDLINE_APP})
    SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES PROJECT_LABEL "${TARGET_LABEL}")
    SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES DEBUG_POSTFIX ${CMAKE_DEBUG_POSTFIX})
    SET_TARGET_PROPERTIES(${TARGET_TARGETNAME} PROPERTIES OUTPUT_NAME ${TARGET_NAME})
    
    SETUP_LINK_LIBRARIES()    

ENDMACRO(SETUP_EXE)

# Takes optional second argument (is_commandline_app?) in ARGV1
MACRO(SETUP_APPLICATION APPLICATION_NAME)

        SET(TARGET_NAME ${APPLICATION_NAME} )

        IF(${ARGC} GREATER 1)
            SET(IS_COMMANDLINE_APP ${ARGV1})
        ELSE(${ARGC} GREATER 1)
            SET(IS_COMMANDLINE_APP 0)
        ENDIF(${ARGC} GREATER 1)
            
        SETUP_EXE(${IS_COMMANDLINE_APP})
        
    INSTALL(TARGETS ${TARGET_TARGETNAME} RUNTIME DESTINATION bin  )

ENDMACRO(SETUP_APPLICATION)

MACRO(SETUP_COMMANDLINE_APPLICATION APPLICATION_NAME)

    SETUP_APPLICATION(${APPLICATION_NAME} 1)

ENDMACRO(SETUP_COMMANDLINE_APPLICATION)

# Takes optional second argument (is_commandline_app?) in ARGV1
MACRO(SETUP_EXAMPLE EXAMPLE_NAME)

        SET(TARGET_NAME ${EXAMPLE_NAME} )

        IF(${ARGC} GREATER 1)
            SET(IS_COMMANDLINE_APP ${ARGV1})
        ELSE(${ARGC} GREATER 1)
            SET(IS_COMMANDLINE_APP 0)
        ENDIF(${ARGC} GREATER 1)
            
        SETUP_EXE(${IS_COMMANDLINE_APP})
        
    INSTALL(TARGETS ${TARGET_TARGETNAME} RUNTIME DESTINATION share/OpenSceneGraph/bin  )            

ENDMACRO(SETUP_EXAMPLE)


MACRO(SETUP_COMMANDLINE_EXAMPLE EXAMPLE_NAME)

    SETUP_EXAMPLE(${EXAMPLE_NAME} 1)

ENDMACRO(SETUP_COMMANDLINE_EXAMPLE)