# Copyright David Abrahams 2001-2006. Distributed under the Boost
# Software License, Version 1.0. (See accompanying
# file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

import os ;
import indirect ;
import modules ;
import feature ;
import property ;
import python ;

if ! [ python.configured ] && ! ( --without-python in  [ modules.peek : ARGV ] )
{
    # Attempt default configuration of python
    import toolset : using ;
    using python ;
}

if [ python.configured ] || ( --without-python in  [ modules.peek : ARGV ] )
{
    alias config-warning ;
}
else
{
    message config-warning
        : "warning: No python installation configured and autoconfiguration"
        : "note: failed.  See http://www.boost.org/libs/python/doc/building.html"
        : "note: for configuration instructions or pass --without-python to"
        : "note: suppress this message and silently skip all Boost.Python targets"
        ;
}

if [ python.configured ]
{
project boost/python
  : source-location ../src
  ;

rule cond ( test ? : yes * : no * ) { if $(test) { return $(yes) ; } else { return $(no) ; } }
rule unless ( test ? : yes * : no * ) { if ! $(test) { return $(yes) ; } else { return $(no) ; } }
local rule eq ( a : b ) { if $(a) = $(b) { return 1 ; } }

lib boost_python
    : # sources
    list.cpp
    long.cpp
    dict.cpp
    tuple.cpp
    str.cpp
    slice.cpp

    converter/from_python.cpp
    converter/registry.cpp
    converter/type_id.cpp
    object/enum.cpp
    object/class.cpp
    object/function.cpp
    object/inheritance.cpp
    object/life_support.cpp
    object/pickle_support.cpp
    errors.cpp
    module.cpp
    converter/builtin_converters.cpp
    converter/arg_to_python_base.cpp
    object/iterator.cpp
    object/stl_iterator.cpp
    object_protocol.cpp
    object_operators.cpp
    wrapper.cpp
    import.cpp
    exec.cpp
    object/function_doc_signature.cpp
    :   # requirements
        <link>static:<define>BOOST_PYTHON_STATIC_LIB
        <define>BOOST_PYTHON_SOURCE

        # On Windows, all code using Python has to link to the Python
        # import library.
        #
        # On *nix we never link libboost_python to libpython.  When
        # extending Python, all Python symbols are provided by the
        # Python interpreter executable.  When embedding Python, the
        # client executable is expected to explicitly link to
        # /python//python (the target representing libpython) itself.
        #
        # python_for_extensions is a target defined by Boost.Build to
        # provide the Python include paths, and on Windows, the Python
        # import library, as usage requirements.
        [ cond [ python.configured ] : <library>/python//python_for_extensions ]

        # we prevent building when there is no python available
        # as it's not possible anyway, and to cause dependents to
        # fail to build
        [ unless [ python.configured ] : <build>no ]
        <dependency>config-warning
        <python-debugging>on:<define>BOOST_DEBUG_PYTHON
        -<tag>@$(BOOST_JAMROOT_MODULE)%$(BOOST_JAMROOT_MODULE).tag
        <tag>@$(__name__).python-tag
        <conditional>@python.require-py

    :   # default build
        <link>shared
    :   # usage requirements
        <link>static:<define>BOOST_PYTHON_STATIC_LIB
        <python-debugging>on:<define>BOOST_DEBUG_PYTHON
    ;

numpy-include = [ python.numpy-include ] ;
lib boost_numpy
    : # sources
    numpy/dtype.cpp
    numpy/matrix.cpp
    numpy/ndarray.cpp
    numpy/numpy.cpp
    numpy/scalars.cpp
    numpy/ufunc.cpp
    :   # requirements
        <link>static:<define>BOOST_NUMPY_STATIC_LIB
        <define>BOOST_NUMPY_SOURCE
        [ cond [ python.numpy ] : <library>/python//python_for_extensions ]
        [ unless [ python.numpy ] : <build>no ]
        <include>$(numpy-include)
        <library>boost_python
        <python-debugging>on:<define>BOOST_DEBUG_PYTHON
        -<tag>@$(BOOST_JAMROOT_MODULE)%$(BOOST_JAMROOT_MODULE).tag
	<tag>@$(__name__).python-tag
        <conditional>@python.require-py

    :   # default build
        <link>shared
    :   # usage requirements
        <link>static:<define>BOOST_NUMPY_STATIC_LIB
        <python-debugging>on:<define>BOOST_DEBUG_PYTHON
    ;

# boost-install creates `stage` and `install` targets
#
# `stage` stages (builds and copies into `stage/lib`) the given libraries
#   `boost_python` and `boost_numpy` and their dependencies and is similar
#   to issuing `b2 --with-python stage` from top level
#
# `install` installs the two libraries and their dependencies and is similar
#   to issuing `b2 --with-python install` from top level

boost-install boost_python boost_numpy ;

}
else
{

# When Python isn't configured, the above `boost-install` is not executed,
# so we create empty `stage` and `install` targets that do nothing but issue
# a warning message unless `--without-python` is given

alias stage : config-warning ;
explicit stage ;

alias install : config-warning ;
explicit install ;

}