{
            properties += <link-format>bundle ;
        }
        properties += <framework>$(PYTHON_FRAMEWORK) ;
    }
    return $(properties) ;
}

if $(NT)
{
    python-nt-sysinclude = [ GLOB $(PYTHON_ROOT) : PC ] ;
}

rule select-nt-python-includes ( toolset variant : properties * )
{
    if $(toolset) in $(gcc-compilers)
    {
        local d = "" ; 
        if <define>BOOST_DEBUG_PYTHON in $(properties)
        {
            d = DEBUG_ ;
        }
        properties += <sysinclude>$(CYGWIN_PYTHON_$(d)ROOT)/include/python$(CYGWIN_PYTHON_$(d)VERSION) ;
    }
    else
    {
      properties +=
          <sysinclude>$(PYTHON_INCLUDES)
            <sysinclude>$(python-nt-sysinclude) # in case the user is using a source installation
              ;
        
        if [ MATCH (cwpro) : $(toolset) ] && ( $(variant) = debug-python )
        {
            properties = [ difference $(properties) : <define>_DEBUG ] ;  #it warns about redefinition otherwise.
        }
        else
        {
            properties += <debug-python><define>_DEBUG ;
        }
    }
    return $(properties) ;
}

PYTHON_PROPERTIES += 
        <sysinclude>@boost
          <stlport-iostream>on
            select-python-library
            ;

BOOST_PYTHON_V2_PROPERTIES 
  = $(PYTHON_PROPERTIES)
    <metrowerks><*><cxxflags>"-inline deferred" 
      <cwpro8><*><cxxflags>"-inline deferred"  # added for internal testing purposes
        <cxx><*><sysinclude>@boost/boost/compatibility/cpp_c_headers
         <define>BOOST_PYTHON_DYNAMIC_LIB
      ;

# Extends the RUN_PATH assignment for targets built under Cygwin so
# that the Python DLL can be found.
rule add-cygwin-python-run-path ( module )
{
    if <define>BOOST_DEBUG_PYTHON in $(gBUILD_PROPERTIES)
    {
        gRUN_LD_LIBRARY_PATH($(module)) += $(CYGWIN_PYTHON_DEBUG_DLL_PATH) ;
    }
    else
    {
        gRUN_LD_LIBRARY_PATH($(module)) += $(CYGWIN_PYTHON_DLL_PATH) ;
    }
}

# This is the generator function for Python modules. It deals with the
# need to change the name of modules compiled with debugging on. This
# is just a wrapper around the generator for shared libraries,
# dll-files.
rule python-files ( module implib ? : sources * )
{
    dll-files $(module) $(implib) : $(sources) : PYD ;

    if $(gCURRENT_TOOLSET) in $(gcc-compilers)
    {
        if $(PYTHON_WINDOWS)
        {
            add-cygwin-python-run-path $(<[-1]) ;
        }
        else
        {
            gRUN_PATH($(module)) += $(GCC_ROOT_DIRECTORY)/lib ;
        }
    }
}

if $(NT)
{
    # Adjust the name of Python modules so that they have the _d
    # suffix when compiled with python debugging enabled.
    gNAME_ADJUST(PYD) = name-adjust-PYD ;

    rule name-adjust-PYD ( pyd implib ? : properties * : toolset variant )
    {
        # Cygwin python is only happy if compiled modules have a .dll
        # extension
        if $(toolset) in $(gcc-compilers)
        {
            pyd = $(pyd:S=.dll) ;
        }
        else if <define>BOOST_DEBUG_PYTHON in $(properties)
        {
            pyd = $(pyd:S=)_d$(pyd:S) ;
        }
        return $(pyd) $(implib) ;
    }
}

rule Link-PYD
{
    if $(UNIX) 
    {
        LINK_LIBPATH on $(<) = [ join $(gRUN_LD_LIBRARY_PATH($(<))) : $(SPLITPATH) ] ;
    }
    gRUN_PYTHONPATH($(<)) += $(gLOCATE($(<[1]))) ;
    .do-link $(<) : $(>) : PYD ;
}

declare-target-type PYD : <shared-linkable>true ;
gGENERATOR_FUNCTION(PYD) = python-files ;
if $(NT)
{
    SUFPYD = .pyd $(SUFDLL[2-]) ;
}
else if $(OS) = MACOSX
{
    SUFPYD = .so $(SUFDLL[2-]) ;
}
else
{
    SUFPYD = $(SUFDLL) ;
}
PYDMODE = $(DLLMODE) ;
SHARED_TYPES += PYD ;

gTARGET_TYPE_ID(pyd) = PYD ;
gIS_DEPENDENCY(PYD) = TRUE ;

# Declare a python extension.
rule extension ( name : sources + : requirements * : default-BUILD * )
{
    requirements += $(BOOST_PYTHON_V2_PROPERTIES) ;
    

    declare-local-target $(name) : $(sources) : $(requirements) : $(default-BUILD) : PYD ;
}

gGENERATOR_FUNCTION(TEST_PYD) = run-test PYD  ;
SUFTEST_PYD = .run ;

declare-build-succeed-test RUN_PYD : TEST_PYD ;

# boost-python-runtest target : python-script sources : requirements : local-build : args
#
# declare a python module test $(<).test which builds when out-of-date
#
# pass --python-test-all on the command-line to force rebuilding
rule boost-python-runtest (
  target : sources + : requirements * : local-build * : args * )
{
    local gRUN_TEST_ARGS = $(args) ;
    local pyfiles = [ MATCH ^(.*[.]py)$ : $(sources) ] ;
    sources = [ difference $(sources) : $(pyfiles) ] ;
    local gRUN_TEST_INPUT_FILES = [ FGristFiles $(pyfiles) ] ;

    # tell Jam that the python script is relative to this directory
    SEARCH on $(gRUN_TEST_INPUT_FILES) = $(SEARCH_SOURCE) ;

    # The user can add additional arguments in PYTHON_TEST_ARGS.
    local gRUN_TEST_ARGS2 = $(PYTHON_TEST_ARGS) ;
    gRUN_TEST_ARGS2 ?= -v ;
    
    #
    # Stick the names of the python script and source files used in
    # testing into $(source-files) on the main target.  This is kind
    # of a hack, because boost-test will be returning the name of the
    # main target, but unfortunatedly dump-tests runs during the
    # evaluation of boost-test and not during the build phase :(
    #
    local main-target = [ FGristFiles [ expand-target-names $(target) : RUN_PYD ] ] ;
    source-files on $(main-target) = $(gRUN_TEST_INPUT_FILES) ;
    
    local dependencies = [ FGristFiles [ expand-source-names $(sources) ] ] ;
    source-files on $(main-target) += $(gTARGET_SOURCES($(dependencies))) ;
      
    local result = [ 
      boost-test $(sources)
        : RUN_PYD
        : $(requirements)
          boost-python-disable-borland
          <default>python-intel-use-gcc-stdlib # unless otherwise
					       # specified, assume the GCC standard
					       # library is needed for intel
          : $(target)
            : $(local-build)
    ] ;
}

rule boost-python-test ( name : sources + : requirements * : default-BUILD * )
{
    extension $(name) : $(sources) : $(requirements) <suppress>true : $(4) ;
}

# Returns the executable to use for testing one or more Python modules
rule test-executable(PYD) ( targets-to-test + )
{
    # choose the right python executable
    local python = $(PYTHON) ;
    
    if $(NT)
    {
        local d = "" ;
        if <define>BOOST_DEBUG_PYTHON in $(gBUILD_PROPERTIES)
        {
            d = _D ;
        }

        if $(gCURRENT_TOOLSET) in $(gcc-compilers)
        {
            python = $(CYGWIN_PYTHON$(d)) ;
        }
        else
        {
            python = $(PYTHON$(d)) ;
        }
    }
    
    return $(python) ;
}

rule check-python-config ( )
{
    if --without-python in $(ARGV)
    {
        gNO_PYTHON_INSTALL = true ;
    }
    else if ! $(gPYTHON_CONFIG_CHECKED)
    {
        local dir ;
        
        if $(NT) &&  $(TOOLS) in $(gcc-compilers)
        {
            dir =  $(CYGWIN_PYTHON_DEBUG_ROOT) $(CYGWIN_PYTHON_ROOT) ;
            v = $(CYGWIN_PYTHON_DEBUG_VERSION) $(CYGWIN_PYTHON_VERSION) ;
            dir = $(dir)/include/python$(v) ;
            dir = /cygwin/$(dir) $(dir) ;
        }
        dir += $(PYTHON_INCLUDES) ;
          
        # This represents an improvement over the checking that was in
        # Boost 1.28.0, but it is still an imperfect hack. For
        # Boost.Build v2 we will clean up the rules.
        if ! [ GLOB $(dir) : Python.h ]
        {
            gNO_PYTHON_INSTALL = true ;
            ECHO "---------------------------------------------------------------------" ;
            ECHO "*** If you don't need Boost.Python, you can ignore this section  ***" ;
            ECHO "*** pass --without-python to suppress this message in the future ***" ;
            ECHO ;
            ECHO skipping Boost.Python library build due to missing or incorrect configuration ;
            ECHO ;
            ECHO "couldn't find Python.h in"  \"$(dir:J=" ")\" ;
            ECHO ;
            ECHO You can configure the location of your python installation by setting: ;
            ECHO "PYTHON_VERSION - The 2-part python Major.Minor version number (e.g." ;
            ECHO "                 \"2.2\", NOT \"2.2.1\")  - currently" \"$(PYTHON_VERSION)\" ;
            ECHO ;
            if $(NT)
            {
                ECHO "PYTHON_ROOT    - automatically configured from PYTHON_VERSION if not" ;
                ECHO "                 otherwise set ; currently" \"$(PYTHON_ROOT:J=" ")\" ;
            }
            else
            {
                ECHO "PYTHON_ROOT    - currently" \"$(PYTHON_ROOT:J=" ")\" ;
            }
            ECHO ;
            ECHO "The following are automatically configured from PYTHON_ROOT if not" ;
            ECHO "otherwise set:" ;
            ECHO ;
            ECHO "    PYTHON_LIB_PATH       - path to Python library object; currently" ;
            ECHO "                            \""$(PYTHON_LIB_PATH:J=" ")\" ;
            
            if ! $(NT)
            {
                ECHO "    PYTHON_INCLUDES       - path to Python #include directories; currently" ;
                ECHO "                            \""$(PYTHON_INCLUDES:J=" ")\" ;
            }
            else if [ intersection $(TOOLS) : $(gcc-compilers) ]
            {
                ECHO ;
                ECHO "    For detailed configuration of Boost.Python for Cygwin GCC" ;
                ECHO "    under Windows NT please see" ;
                ECHO "    http://www.boost.org/libs/python/doc/building.html" ;
            }
            
            ECHO "---------------------------------------------------------------------" ;
        }
        gPYTHON_CONFIG_CHECKED = true ;
    }
    if ! $(gNO_PYTHON_INSTALL)
    {
        return true ;
    }
}

}