import os, string, sys, subprocess

Import('env')

boost_env = env.Clone()

modules = ['thread','program_options']

target_os = env.get('TARGET_OS')
target_arch = env.get('TARGET_ARCH')

if 'linux' == target_os :
    # Check for Boost libraries in /usr/boost
    print 'TODO: Perform platform check for linux'
    raise SCons.Errors.EnvironmentError('Unsupported platform')

if 'android' == target_os :
    env.Tool('URLDownload',    toolpath=['../../tools/scons'])
    env.Tool('UnpackAll',      toolpath=['../../tools/scons'])
    env.Tool('BoostBootstrap', toolpath=['../../tools/scons'])
    env.Tool('BoostBuild',     toolpath=['../../tools/scons'])

    boost_version   = '1.58.0'
    boost_base_name  = 'boost_'+string.replace(boost_version,'.','_')
    boost_arch_name  = boost_base_name+'.zip'
    boost_url       = 'http://downloads.sourceforge.net/project/boost/boost/'+boost_version+'/'+boost_arch_name+'?r=&ts=1421801329&use_mirror=iweb'

    host_os = sys.platform

    if host_os == 'linux2' :
        boost_bootstrap = boost_base_name+os.sep+'bootstrap.sh'
        boost_b2_name    = boost_base_name+os.sep+'b2'
    else :
        msg="Host platform (%s) is currently not supported for boost builds" % host_os
        raise SCons.Errors.EnvironmentError(msg)

    boost_zip = env.URLDownload(boost_arch_name, boost_url)
    boost_dir = env.UnpackAll(boost_bootstrap, boost_zip)
    boost_b2  = env.BoostBootstrap(boost_b2_name, boost_dir)

    dep_sys_root = env['DEP_SYS_ROOT']
    dep_src_dir =  dep_sys_root + os.sep + 'include'
    dep_lib_dir =  dep_sys_root + os.sep + 'lib'

    boost_targets = [
        os.path.join(dep_src_dir, 'boost', 'config.hpp'),
        os.path.join(dep_src_dir, 'boost', 'variant.hpp'),
        os.path.join(dep_src_dir, 'boost', 'program_options.hpp'),
        os.path.join(dep_src_dir, 'libboost_thread.a'),
        os.path.join(dep_src_dir, 'libboost_atomic.a'),
        os.path.join(dep_src_dir, 'libboost_system.a'),
        os.path.join(dep_src_dir, 'libboost_program_options.a')
        ]

    boost_build = env.BoostBuild(boost_targets, boost_b2, PREFIX=dep_sys_root, MODULES=modules)