import python ;
import feature : feature ;
import project ;
import targets ;
import "class" : new ;

use-project /torrent : ../.. ;

lib boost_python : : <target-os>darwin <name>boost_python-mt $(boost-library-search-path) ;
lib boost_python : : <name>boost_python ;

feature visibility : default hidden : composite propagated link-incompatible ;
feature.compose <visibility>hidden : <cflags>-fvisibility=hidden <cxxflags>-fvisibility-inlines-hidden ;

feature libtorrent-link : static shared : ;
feature libtorrent-python-pic : off on : composite propagated link-incompatible ;
feature.compose <libtorrent-python-pic>on : <cflags>-fPIC ;

rule libtorrent_linking ( properties * )
{
    local result ;

    if ! <target-os>windows in $(properties)
        && <toolset>gcc in $(properties)
    {
        result += <libtorrent-python-pic>on ;
    }

    if <toolset>gcc in $(properties)
      || <toolset>darwin in $(properties)
      || <toolset>clang in $(properties)
      || <toolset>clang-darwin in $(properties)
    {
        result += <visibility>hidden ;

        if ( <toolset>gcc in $(properties) )
        {
           result += <linkflags>-Wl,-Bsymbolic ;
        }
    }

    if <link>static in $(properties)
    {
        ECHO "WARNING: you probably want to specify libtorrent-link=static rather than link=static" ;
    }

    if <boost>source in $(properties)
    {

        if <boost-link>static in $(properties) && <target-os>linux in $(properties)
        {
            ECHO "WARNING: you cannot link statically against boost-python on linux, because it links against pthread statically in that case, which is not allowed" ;
        }

        # linux must link dynamically against boost python because it pulls
        # in libpthread, which must be linked dynamically since we're building a .so
        # (the static build of libpthread is not position independent)
        if <boost-link>shared in $(properties) || <target-os>linux in $(properties)
        {
            result += <library>/boost/python//boost_python/<link>shared ;
        }
        else
        {
            result += <library>/boost/python//boost_python/<link>static ;
        }

        if <libtorrent-link>shared in $(properties)
        {
            result += <library>/torrent//torrent/<link>shared/<boost-link>shared ;
        }
        else
        {
            result += <library>/torrent//torrent/<link>static/<boost-link>static ;
        }
    }
    else
    {
        result += <library>boost_python ;

        if <libtorrent-link>shared in $(properties)
        {
            result += <library>/torrent//torrent/<link>shared/<boost-link>shared ;
        }
        else
        {
            result += <library>/torrent//torrent/<link>static/<boost-link>static ;
        }
    }

    return $(result) ;
}

# this is a copy of the rule from boost-build's python-extension, but without
# specifying <suppress-import-lib>no as a mandatory property. That property
# would otherwise cause build failures because it suppresses linking against the
# runtime library and kernel32 on windows

rule my-python-extension ( name : sources * : requirements * : default-build * :
                        usage-requirements * )
{
    requirements += <use>/python//python_for_extensions ;

    local project = [ project.current ] ;

    targets.main-target-alternative
        [ new typed-target $(name) : $(project) : PYTHON_EXTENSION
            : [ targets.main-target-sources $(sources) : $(name) ]
            : [ targets.main-target-requirements $(requirements) : $(project) ]
            : [ targets.main-target-default-build $(default-build) : $(project) ]
        ] ;
}

my-python-extension libtorrent 
  : # sources
    src/module.cpp
    src/big_number.cpp
    src/converters.cpp
    src/create_torrent.cpp
    src/fingerprint.cpp
    src/utility.cpp
    src/session.cpp
    src/entry.cpp
    src/torrent_info.cpp
    src/string.cpp
    src/torrent_handle.cpp
    src/torrent_status.cpp
    src/session_settings.cpp
    src/version.cpp
    src/alert.cpp
    src/datetime.cpp
    src/peer_info.cpp
    src/ip_filter.cpp
    src/magnet_uri.cpp
    src/error_code.cpp
  : # requirements
    <include>src
    <conditional>@libtorrent_linking
  : # default build
    <boost-link>static
    <libtorrent-link>static
    <suppress-import-lib>false
  ;

install stage_module : libtorrent : <location>. ;