def strip_libraries(self, arch):
        info('Stripping libraries')
        if self.ctx.python_recipe.from_crystax:
            info('Python was loaded from CrystaX, skipping strip')
            return
        env = arch.get_env()
        tokens = shlex.split(env['STRIP'])
        strip = sh.Command(tokens[0])
        if len(tokens) > 1:
            strip = strip.bake(tokens[1:])

        libs_dir = join(self.dist_dir, '_python_bundle',
                        '_python_bundle', 'modules')
        if self.ctx.python_recipe.name == 'python2legacy':
            libs_dir = join(self.dist_dir, 'private')
        filens = shprint(sh.find, libs_dir, join(self.dist_dir, 'libs'),
                         '-iname', '*.so', _env=env).stdout.decode('utf-8')

        logger.info('Stripping libraries in private dir')
        for filen in filens.split('\n'):
            if not filen:
                continue  # skip the last ''
            try:
                strip(filen, _env=env)
            except sh.ErrorReturnCode_1:
                logger.debug('Failed to strip ' + filen)

    def build_arch(self, arch):
        """simple shared compile"""
        env = self.get_recipe_env(arch, with_flags_in_cc=False)
        for path in (
                self.get_build_dir(arch.arch),
                join(self.ctx.python_recipe.get_build_dir(arch.arch), 'Lib'),
                join(self.ctx.python_recipe.get_build_dir(arch.arch), 'Include')):
            if not exists(path):
                info("creating {}".format(path))
                shprint(sh.mkdir, '-p', path)
        cli = env['CC'].split()[0]
        # makes sure first CC command is the compiler rather than ccache, refs:
        # https://github.com/kivy/python-for-android/issues/1399
        if 'ccache' in cli:
            cli = env['CC'].split()[1]
        cc = sh.Command(cli)

        with current_directory(self.get_build_dir(arch.arch)):
            cflags = env['CFLAGS'].split()
            cflags.extend(['-I.', '-c', '-l.', 'glob.c', '-I.'])
            shprint(cc, *cflags, _env=env)
            cflags = env['CFLAGS'].split()
            cflags.extend(['-shared', '-I.', 'glob.o', '-o', 'libglob.so'])
            cflags.extend(env['LDFLAGS'].split())
            shprint(cc, *cflags, _env=env)
            shprint(sh.cp, 'libglob.so', join(self.ctx.libs_dir, arch.arch))

 def prebuild_arch(self, arch):
     if not self.is_patched(arch):
         super(ReportLabRecipe, self).prebuild_arch(arch)
         self.apply_patch('patches/fix-setup.patch', arch.arch)
         recipe_dir = self.get_build_dir(arch.arch)
         shprint(sh.touch, os.path.join(recipe_dir, '.patched'))
         ft = self.get_recipe('freetype', self.ctx)
         ft_dir = ft.get_build_dir(arch.arch)
         ft_lib_dir = os.environ.get('_FT_LIB_', os.path.join(ft_dir, 'objs', '.libs'))
         ft_inc_dir = os.environ.get('_FT_INC_', os.path.join(ft_dir, 'include'))
         tmp_dir = os.path.normpath(os.path.join(recipe_dir, "..", "..", "tmp"))
         info('reportlab recipe: recipe_dir={}'.format(recipe_dir))
         info('reportlab recipe: tmp_dir={}'.format(tmp_dir))
         info('reportlab recipe: ft_dir={}'.format(ft_dir))
         info('reportlab recipe: ft_lib_dir={}'.format(ft_lib_dir))
         info('reportlab recipe: ft_inc_dir={}'.format(ft_inc_dir))
         with current_directory(recipe_dir):
             sh.ls('-lathr')
             ensure_dir(tmp_dir)
             pfbfile = os.path.join(tmp_dir, "pfbfer-20070710.zip")
             if not os.path.isfile(pfbfile):
                 sh.wget("http://www.reportlab.com/ftp/pfbfer-20070710.zip", "-O", pfbfile)
             sh.unzip("-u", "-d", os.path.join(recipe_dir, "src", "reportlab", "fonts"), pfbfile)
             if os.path.isfile("setup.py"):
                 with open('setup.py', 'rb') as f:
                     text = f.read().replace('_FT_LIB_', ft_lib_dir).replace('_FT_INC_', ft_inc_dir)
                 with open('setup.py', 'wb') as f:
                     f.write(text)

    def set_libs_flags(self, env, arch):
        '''Takes care to properly link libraries with python depending on our
        requirements and the attribute :attr:`opt_depends`.
        '''
        if 'libffi' in self.ctx.recipe_build_order:
            info('Activating flags for libffi')
            recipe = Recipe.get_recipe('libffi', self.ctx)
            include = ' -I' + ' -I'.join(recipe.get_include_dirs(arch))
            ldflag = ' -L' + join(recipe.get_build_dir(arch.arch),
                                  recipe.get_host(arch), '.libs') + ' -lffi'
            env['CPPFLAGS'] = env.get('CPPFLAGS', '') + include
            env['LDFLAGS'] = env.get('LDFLAGS', '') + ldflag

        if 'openssl' in self.ctx.recipe_build_order:
            recipe = Recipe.get_recipe('openssl', self.ctx)
            openssl_build_dir = recipe.get_build_dir(arch.arch)
            setuplocal = join('Modules', 'Setup.local')
            shprint(sh.cp, join(self.get_recipe_dir(), 'Setup.local-ssl'), setuplocal)
            shprint(sh.sed, '-i.backup', 's#^SSL=.*#SSL={}#'.format(openssl_build_dir), setuplocal)
            env['OPENSSL_VERSION'] = recipe.version

        if 'sqlite3' in self.ctx.recipe_build_order:
            # Include sqlite3 in python2 build
            recipe = Recipe.get_recipe('sqlite3', self.ctx)
            include = ' -I' + recipe.get_build_dir(arch.arch)
            lib = ' -L' + recipe.get_lib_dir(arch) + ' -lsqlite3'
            # Insert or append to env
            flag = 'CPPFLAGS'
            env[flag] = env[flag] + include if flag in env else include
            flag = 'LDFLAGS'
            env[flag] = env[flag] + lib if flag in env else lib
            
        return env

    def build_arch(self, arch):
        """simple shared compile"""
        env = self.get_recipe_env(arch, with_flags_in_cc=False)
        for path in (
                self.get_build_dir(arch.arch),
                join(self.ctx.python_recipe.get_build_dir(arch.arch), 'Lib'),
                join(self.ctx.python_recipe.get_build_dir(arch.arch), 'Include')):
            if not exists(path):
                info("creating {}".format(path))
                shprint(sh.mkdir, '-p', path)
        cli = env['CC'].split()
        cc = sh.Command(cli[0])

        with current_directory(self.get_build_dir(arch.arch)):
            cflags = env['CFLAGS'].split()
            cflags.extend(['-I.', '-c', '-l.', 'ifaddrs.c', '-I.'])
            shprint(cc, *cflags, _env=env)

            cflags = env['CFLAGS'].split()
            cflags.extend(['-shared', '-I.', 'ifaddrs.o', '-o', 'libifaddrs.so'])
            cflags.extend(env['LDFLAGS'].split())
            shprint(cc, *cflags, _env=env)

            shprint(sh.cp, 'libifaddrs.so', self.ctx.get_libs_dir(arch.arch))
            shprint(sh.cp, "libifaddrs.so", join(self.ctx.get_python_install_dir(), 'lib'))
            # drop header in to the Python include directory
            python_version = self.ctx.python_recipe.version[0:3]
            shprint(sh.cp, "ifaddrs.h",
                    join(
                        self.ctx.get_python_install_dir(),
                        'include/python{}'.format(python_version))
           )
            include_path = join(self.ctx.python_recipe.get_build_dir(arch.arch), 'Include')
            shprint(sh.cp, "ifaddrs.h", include_path)

def build_recipes(build_order, python_modules, ctx):
    # Put recipes in correct build order
    bs = ctx.bootstrap
    info_notify("Recipe build order is {}".format(build_order))
    if python_modules:
        python_modules = sorted(set(python_modules))
        info_notify(
            ('The requirements ({}) were not found as recipes, they will be '
             'installed with pip.').format(', '.join(python_modules)))

    recipes = [Recipe.get_recipe(name, ctx) for name in build_order]

    # download is arch independent
    info_main('# Downloading recipes ')
    for recipe in recipes:
        recipe.download_if_necessary()

    for arch in ctx.archs:
        info_main('# Building all recipes for arch {}'.format(arch.arch))

        info_main('# Unpacking recipes')
        for recipe in recipes:
            ensure_dir(recipe.get_build_container_dir(arch.arch))
            recipe.prepare_build_dir(arch.arch)

        info_main('# Prebuilding recipes')
        # 2) prebuild packages
        for recipe in recipes:
            info_main('Prebuilding {} for {}'.format(recipe.name, arch.arch))
            recipe.prebuild_arch(arch)
            recipe.apply_patches(arch)

        # 3) build packages
        info_main('# Building recipes')
        for recipe in recipes:
            info_main('Building {} for {}'.format(recipe.name, arch.arch))
            if recipe.should_build(arch):
                recipe.build_arch(arch)
            else:
                info('{} said it is already built, skipping'
                     .format(recipe.name))

        # 4) biglink everything
        # AND: Should make this optional
        info_main('# Biglinking object files')
        if not ctx.python_recipe or not ctx.python_recipe.from_crystax:
            biglink(ctx, arch)
        else:
            info('NDK is crystax, skipping biglink (will this work?)')

        # 5) postbuild packages
        info_main('# Postbuilding recipes')
        for recipe in recipes:
            info_main('Postbuilding {} for {}'.format(recipe.name, arch.arch))
            recipe.postbuild_arch(arch)

    info_main('# Installing pure Python modules')
    run_pymodules_install(ctx, python_modules)

    return

 def delete_dist(self, _args):
     dist = self._dist
     if not dist.folder_exists():
         info('No dist exists that matches your specifications, '
              'exiting without deleting.')
         return
     dist.delete()

    def build_arch(self, arch):
        recipe_build_dir = self.get_build_dir(arch.arch)

        # Create a subdirectory to actually perform the build
        build_dir = join(recipe_build_dir, self.build_subdir)
        ensure_dir(build_dir)

        if not exists(join(build_dir, 'python')):
            with current_directory(recipe_build_dir):
                # Configure the build
                with current_directory(build_dir):
                    if not exists('config.status'):
                        shprint(
                            sh.Command(join(recipe_build_dir, 'configure')))

                # Create the Setup file. This copying from Setup.dist
                # seems to be the normal and expected procedure.
                shprint(sh.cp, join('Modules', 'Setup.dist'),
                        join(build_dir, 'Modules', 'Setup'))

                result = shprint(sh.make, '-C', build_dir)
        else:
            info('Skipping {name} ({version}) build, as it has already '
                 'been completed'.format(name=self.name, version=self.version))

        self.ctx.hostpython = join(build_dir, 'python')

    def build_arch(self, arch):
        info("Extracting CrystaX python3 from NDK package")

        dirn = self.ctx.get_python_install_dir()
        ensure_dir(dirn)

        self.ctx.hostpython = "python{}".format(self.version)

 def clean_bootstrap_builds(self, args):
     '''Delete all the bootstrap builds.'''
     for bs in Bootstrap.list_bootstraps():
         bs = Bootstrap.get_bootstrap(bs, self.ctx)
         if bs.build_dir and exists(bs.build_dir):
             info('Cleaning build for {} bootstrap.'.format(bs.name))
             shutil.rmtree(bs.build_dir)

    def clean_build(self, arch=None):
        """Deletes all the build information of the recipe.

        If arch is not None, only this arch dir is deleted. Otherwise
        (the default) all builds for all archs are deleted.

        By default, this just deletes the main build dir. If the
        recipe has e.g. object files biglinked, or .so files stored
        elsewhere, you should override this method.

        This method is intended for testing purposes, it may have
        strange results. Rebuild everything if this seems to happen.

        """
        if arch is None:
            base_dir = join(self.ctx.build_dir, "other_builds", self.name)
        else:
            base_dir = self.get_build_container_dir(arch)
        dirs = glob.glob(base_dir + "-*")
        if exists(base_dir):
            dirs.append(base_dir)
        if not dirs:
            warning(("Attempted to clean build for {} but found no existing " "build dirs").format(self.name))

        for directory in dirs:
            if exists(directory):
                info("Deleting {}".format(directory))
                shutil.rmtree(directory)

 def download_if_necessary(self):
     info_main("Downloading {}".format(self.name))
     user_dir = environ.get("P4A_{}_DIR".format(self.name.lower()))
     if user_dir is not None:
         info("P4A_{}_DIR is set, skipping download for {}".format(self.name, self.name))
         return
     self.download()

    def build_arch(self, arch):
        env = self.get_recipe_env(arch)
        
        env['CFLAGS'] = env['CFLAGS'] + ' -I{jni_path}/png -I{jni_path}/jpeg'.format(
            jni_path=join(self.ctx.bootstrap.build_dir, 'jni'))
        env['CFLAGS'] = env['CFLAGS'] + ' -I{jni_path}/sdl/include -I{jni_path}/sdl_mixer'.format(
            jni_path=join(self.ctx.bootstrap.build_dir, 'jni'))
        env['CFLAGS'] = env['CFLAGS'] + ' -I{jni_path}/sdl_ttf -I{jni_path}/sdl_image'.format(
            jni_path=join(self.ctx.bootstrap.build_dir, 'jni'))
        debug('pygame cflags', env['CFLAGS'])

        
        env['LDFLAGS'] = env['LDFLAGS'] + ' -L{libs_path} -L{src_path}/obj/local/{arch} -lm -lz'.format(
            libs_path=self.ctx.libs_dir, src_path=self.ctx.bootstrap.build_dir, arch=env['ARCH'])

        env['LDSHARED'] = join(self.ctx.root_dir, 'tools', 'liblink')

        with current_directory(self.get_build_dir(arch.arch)):
            info('hostpython is ' + self.ctx.hostpython)
            hostpython = sh.Command(self.ctx.hostpython)
            shprint(hostpython, 'setup.py', 'install', '-O2', _env=env,
                    _tail=10, _critical=True)

            info('strip is ' + env['STRIP'])
            build_lib = glob.glob('./build/lib*')
            assert len(build_lib) == 1
            print('stripping pygame')
            shprint(sh.find, build_lib[0], '-name', '*.o', '-exec',
                    env['STRIP'], '{}', ';')

        python_install_path = join(self.ctx.build_dir, 'python-install')
        warning('Should remove pygame tests etc. here, but skipping for now')

    def apk(self, args):
        '''Create an APK using the given distribution.'''

        # AND: Need to add a parser here for any extra options
        # parser = argparse.ArgumentParser(
        #     description='Build an APK')
        # args = parser.parse_args(args)

        ctx = self.ctx
        dist = self._dist

        # Manually fixing these arguments at the string stage is
        # unsatisfactory and should probably be changed somehow, but
        # we can't leave it until later as the build.py scripts assume
        # they are in the current directory.
        for i, arg in enumerate(args[:-1]):
            if arg in ('--dir', '--private'):
                args[i+1] = realpath(expanduser(args[i+1]))

        build = imp.load_source('build', join(dist.dist_dir, 'build.py'))
        with current_directory(dist.dist_dir):
            build.parse_args(args)
            shprint(sh.ant, 'debug', _tail=20, _critical=True)

        # AND: This is very crude, needs improving. Also only works
        # for debug for now.
        info_main('# Copying APK to current directory')
        apks = glob.glob(join(dist.dist_dir, 'bin', '*-*-debug.apk'))
        if len(apks) == 0:
            raise ValueError('Couldn\'t find the built APK')
        if len(apks) > 1:
            info('More than one built APK found...guessing you '
                 'just built {}'.format(apks[-1]))
        shprint(sh.cp, apks[-1], './')

    def build_cython_components(self, arch):
        info('Cythonizing anything necessary in {}'.format(self.name))
        env = self.get_recipe_env(arch)
        with current_directory(self.get_build_dir(arch.arch)):
            hostpython = sh.Command(self.ctx.hostpython)
            info('Trying first build of {} to get cython files: this is '
                 'expected to fail'.format(self.name))
            try:
                shprint(hostpython, 'setup.py', 'build_ext', _env=env,
                        *self.setup_extra_args)
            except sh.ErrorReturnCode_1:
                print()
                info('{} first build failed (as expected)'.format(self.name))

            info('Running cython where appropriate')
            shprint(sh.find, self.get_build_dir(arch.arch), '-iname', '*.pyx',
                    '-exec', self.ctx.cython, '{}', ';', _env=env)
            info('ran cython')

            shprint(hostpython, 'setup.py', 'build_ext', '-v', _env=env,
                    _tail=20, _critical=True, *self.setup_extra_args)

            print('stripping')
            build_lib = glob.glob('./build/lib*')
            shprint(sh.find, build_lib[0], '-name', '*.o', '-exec',
                    env['STRIP'], '{}', ';', _env=env)
            print('stripped!?')

 def should_build(self, arch):
     name = self.folder_name
     if self.ctx.has_package(name):
         info('Python package already exists in site-packages')
         return False
     info('{} apparently isn\'t already in site-packages'.format(name))
     return True

    def extract_source(self, source, cwd):
        """
        (internal) Extract the `source` into the directory `cwd`.
        """
        if not source:
            return
        if isfile(source):
            info("Extract {} into {}".format(source, cwd))

            if source.endswith(".tgz") or source.endswith(".tar.gz"):
                shprint(sh.tar, "-C", cwd, "-xvzf", source)

            elif source.endswith(".tbz2") or source.endswith(".tar.bz2"):
                shprint(sh.tar, "-C", cwd, "-xvjf", source)

            elif source.endswith(".zip"):
                zf = zipfile.ZipFile(source)
                zf.extractall(path=cwd)
                zf.close()

            else:
                warning("Error: cannot extract, unrecognized extension for {}".format(source))
                raise Exception()

        elif isdir(source):
            info("Copying {} into {}".format(source, cwd))

            shprint(sh.cp, "-a", source, cwd)

        else:
            warning("Error: cannot extract or copy, unrecognized path {}".format(source))
            raise Exception()

    def rebuild_compiled_components(self, arch, env):
        info('Rebuilding compiled components in {}'.format(self.name))

        hostpython = sh.Command(self.real_hostpython_location)
        shprint(hostpython, 'setup.py', 'clean', '--all', _env=env)
        shprint(hostpython, 'setup.py', self.build_cmd, '-v', _env=env,
                *self.setup_extra_args)

    def _unpack_aar(self, aar, arch):
        '''Unpack content of .aar bundle and copy to current dist dir.'''
        with temp_directory() as temp_dir:
            name = splitext(basename(aar))[0]
            jar_name = name + '.jar'
            info("unpack {} aar".format(name))
            debug("  from {}".format(aar))
            debug("  to {}".format(temp_dir))
            shprint(sh.unzip, '-o', aar, '-d', temp_dir)

            jar_src = join(temp_dir, 'classes.jar')
            jar_tgt = join('libs', jar_name)
            debug("copy {} jar".format(name))
            debug("  from {}".format(jar_src))
            debug("  to {}".format(jar_tgt))
            ensure_dir('libs')
            shprint(sh.cp, '-a', jar_src, jar_tgt)

            so_src_dir = join(temp_dir, 'jni', arch.arch)
            so_tgt_dir = join('libs', arch.arch)
            debug("copy {} .so".format(name))
            debug("  from {}".format(so_src_dir))
            debug("  to {}".format(so_tgt_dir))
            ensure_dir(so_tgt_dir)
            so_files = glob.glob(join(so_src_dir, '*.so'))
            for f in so_files:
                shprint(sh.cp, '-a', f, so_tgt_dir)

    def clean_build(self, arch=None):
        '''Deletes all the build information of the recipe.

        If arch is not None, only this arch dir is deleted. Otherwise
        (the default) all builds for all archs are deleted.

        By default, this just deletes the main build dir. If the
        recipe has e.g. object files biglinked, or .so files stored
        elsewhere, you should override this method.

        This method is intended for testing purposes, it may have
        strange results. Rebuild everything if this seems to happen.

        '''
        if arch is None:
            base_dir = join(self.ctx.build_dir, 'other_builds', self.name)
        else:
            base_dir = self.get_build_container_dir(arch)
        dirs = glob.glob(base_dir + '-*')
        if exists(base_dir):
            dirs.append(base_dir)
        if not dirs:
             warning(('Attempted to clean build for {} but found no existing '
                      'build dirs').format(self.name))

        for directory in dirs:
            if exists(directory):
                info('Deleting {}'.format(directory))
                shutil.rmtree(directory)

        # Delete any Python distributions to ensure the recipe build
        # doesn't persist in site-packages
        shutil.rmtree(self.ctx.python_installs_dir)