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 __init__(self):
        super(Context, self).__init__()
        self.include_dirs = []

        self._build_env_prepared = False

        self._sdk_dir = None
        self._ndk_dir = None
        self._android_api = None
        self._ndk_ver = None

        self.toolchain_prefix = None
        self.toolchain_version = None

        self.local_recipes = None

        # root of the toolchain
        self.setup_dirs()

        # this list should contain all Archs, it is pruned later
        self.archs = (
            ArchARM(self),
            ArchARMv7_a(self),
            Archx86(self)
            )

        ensure_dir(join(self.build_dir, 'bootstrap_builds'))
        ensure_dir(join(self.build_dir, 'other_builds'))
        # other_builds: where everything else is built

        # remove the most obvious flags that can break the compilation
        self.env.pop("LDFLAGS", None)
        self.env.pop("ARCHFLAGS", None)
        self.env.pop("CFLAGS", None)

    def get_recipe_env(self, arch, with_flags_in_cc=True):
        env = super(CythonRecipe, self).get_recipe_env(arch, with_flags_in_cc)
        env['LDFLAGS'] = env['LDFLAGS'] + ' -L{} '.format(
            self.ctx.get_libs_dir(arch.arch) +
            ' -L{} '.format(self.ctx.libs_dir) +
            ' -L{}'.format(join(self.ctx.bootstrap.build_dir, 'obj', 'local',
                                arch.arch)))
        if self.ctx.python_recipe.from_crystax:
            env['LDFLAGS'] = (env['LDFLAGS'] +
                              ' -L{}'.format(join(self.ctx.bootstrap.build_dir, 'libs', arch.arch)))

        if self.ctx.python_recipe.from_crystax or self.ctx.python_recipe.name == 'python3':
            env['LDSHARED'] = env['CC'] + ' -shared'
        else:
            env['LDSHARED'] = join(self.ctx.root_dir, 'tools', 'liblink.sh')
        # shprint(sh.whereis, env['LDSHARED'], _env=env)
        env['LIBLINK'] = 'NOTNONE'
        env['NDKPLATFORM'] = self.ctx.ndk_platform
        if self.ctx.copy_libs:
            env['COPYLIBS'] = '1'

        # Every recipe uses its own liblink path, object files are
        # collected and biglinked later
        liblink_path = join(self.get_build_container_dir(arch.arch),
                            'objects_{}'.format(self.name))
        env['LIBLINK_PATH'] = liblink_path
        ensure_dir(liblink_path)

        return env

 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 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 make_build_dest(dest):
            build_dest = join(build_root, dest)
            if not isdir(build_dest):
                ensure_dir(build_dest)
                return build_dest, False

            return build_dest, True

    def build_arch(self, arch):
        super(LibZMQRecipe, self).build_arch(arch)
        env = self.get_recipe_env(arch)
        #
        # libsodium_recipe = Recipe.get_recipe('libsodium', self.ctx)
        # libsodium_dir = libsodium_recipe.get_build_dir(arch.arch)
        # env['sodium_CFLAGS'] = '-I{}'.format(join(
        #     libsodium_dir, 'src'))
        # env['sodium_LDLAGS'] = '-L{}'.format(join(
        #     libsodium_dir, 'src', 'libsodium', '.libs'))

        curdir = self.get_build_dir(arch.arch)
        prefix = join(curdir, "install")
        with current_directory(curdir):
            bash = sh.Command('sh')
            shprint(
                bash, './configure',
                '--host=arm-linux-androideabi',
                '--without-documentation',
                '--prefix={}'.format(prefix),
                '--with-libsodium=no',
                _env=env)
            shprint(sh.make, _env=env)
            shprint(sh.make, 'install', _env=env)
            shutil.copyfile('.libs/libzmq.so', join(
                self.ctx.get_libs_dir(arch.arch), 'libzmq.so'))

            bootstrap_obj_dir = join(self.ctx.bootstrap.build_dir, 'obj', 'local', arch.arch)
            ensure_dir(bootstrap_obj_dir)
            shutil.copyfile(
                '{}/sources/cxx-stl/gnu-libstdc++/{}/libs/{}/libgnustl_shared.so'.format(
                    self.ctx.ndk_dir, self.ctx.toolchain_version, arch),
                join(bootstrap_obj_dir, 'libgnustl_shared.so'))

    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 get_recipe_env(self, arch, with_flags_in_cc=True):
        env = super(CythonRecipe, self).get_recipe_env(arch, with_flags_in_cc)
        env['LDFLAGS'] = env['LDFLAGS'] + ' -L{} '.format(
            self.ctx.get_libs_dir(arch.arch) +
            ' -L{} '.format(self.ctx.libs_dir) +
            ' -L{}'.format(join(self.ctx.bootstrap.build_dir, 'obj', 'local',
                                arch.arch)))
        if self.ctx.python_recipe.from_crystax:
            env['LDFLAGS'] = (env['LDFLAGS'] +
                              ' -L{}'.format(join(self.ctx.bootstrap.build_dir, 'libs', arch.arch)))
            # ' -L/home/asandy/.local/share/python-for-android/build/bootstrap_builds/sdl2/libs/armeabi '
        if self.ctx.python_recipe.from_crystax:
            env['LDSHARED'] = env['CC'] + ' -shared'
        else:
            env['LDSHARED'] = join(self.ctx.root_dir, 'tools', 'liblink.sh')
        # shprint(sh.whereis, env['LDSHARED'], _env=env)
        env['LIBLINK'] = 'NOTNONE'
        env['NDKPLATFORM'] = self.ctx.ndk_platform
        if self.ctx.copy_libs:
            env['COPYLIBS'] = '1'

        # Every recipe uses its own liblink path, object files are
        # collected and biglinked later
        liblink_path = join(self.get_build_container_dir(arch.arch),
                            'objects_{}'.format(self.name))
        env['LIBLINK_PATH'] = liblink_path
        ensure_dir(liblink_path)

        if self.ctx.python_recipe.from_crystax:
            env['CFLAGS'] = '-I{} '.format(
                join(self.ctx.ndk_dir, 'sources', 'python',
                     self.ctx.python_recipe.version, 'include',
                     'python')) + env['CFLAGS']

        return env

    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 get_recipe_env(self, arch, with_flags_in_cc=True):
        env = super(CythonRecipe, self).get_recipe_env(arch, with_flags_in_cc)
        env["LDFLAGS"] = env["LDFLAGS"] + " -L{} ".format(
            self.ctx.get_libs_dir(arch.arch)
            + " -L{} ".format(self.ctx.libs_dir)
            + " -L{}".format(join(self.ctx.bootstrap.build_dir, "obj", "local", arch.arch))
        )
        if self.ctx.python_recipe.from_crystax:
            env["LDFLAGS"] = env["LDFLAGS"] + " -L{}".format(join(self.ctx.bootstrap.build_dir, "libs", arch.arch))
            # ' -L/home/asandy/.local/share/python-for-android/build/bootstrap_builds/sdl2/libs/armeabi '
        if self.ctx.python_recipe.from_crystax:
            env["LDSHARED"] = env["CC"] + " -shared"
        else:
            env["LDSHARED"] = join(self.ctx.root_dir, "tools", "liblink.sh")
        # shprint(sh.whereis, env['LDSHARED'], _env=env)
        env["LIBLINK"] = "NOTNONE"
        env["NDKPLATFORM"] = self.ctx.ndk_platform
        if self.ctx.copy_libs:
            env["COPYLIBS"] = "1"

        # Every recipe uses its own liblink path, object files are
        # collected and biglinked later
        liblink_path = join(self.get_build_container_dir(arch.arch), "objects_{}".format(self.name))
        env["LIBLINK_PATH"] = liblink_path
        ensure_dir(liblink_path)

        if self.ctx.python_recipe.from_crystax:
            env["CFLAGS"] = (
                "-I{} ".format(
                    join(self.ctx.ndk_dir, "sources", "python", self.ctx.python_recipe.version, "include", "python")
                )
                + env["CFLAGS"]
            )

        return env

    def run_distribute(self):
        info_main('# Creating Android project from build and {} bootstrap'.format(
            self.name))

        info('This currently just copies the build stuff straight from the build dir.')
        shprint(sh.rm, '-rf', self.dist_dir)
        shprint(sh.cp, '-r', self.build_dir, self.dist_dir)
        with current_directory(self.dist_dir):
            with open('local.properties', 'w') as fileh:
                fileh.write('sdk.dir={}'.format(self.ctx.sdk_dir))

        arch = self.ctx.archs[0]
        if len(self.ctx.archs) > 1:
            raise ValueError('built for more than one arch, but bootstrap cannot handle that yet')
        info('Bootstrap running with arch {}'.format(arch))

        with current_directory(self.dist_dir):
            info('Copying python distribution')

            self.distribute_libs(arch, [self.ctx.get_libs_dir(arch.arch)])
            self.distribute_aars(arch)
            self.distribute_javaclasses(self.ctx.javaclass_dir)

            python_bundle_dir = join('_python_bundle', '_python_bundle')
            ensure_dir(python_bundle_dir)
            site_packages_dir = self.ctx.python_recipe.create_python_bundle(
                join(self.dist_dir, python_bundle_dir), arch)

            if 'sqlite3' not in self.ctx.recipe_build_order:
                with open('blacklist.txt', 'a') as fileh:
                    fileh.write('\nsqlite3/*\nlib-dynload/_sqlite3.so\n')

        self.strip_libraries(arch)
        self.fry_eggs(site_packages_dir)
        super(ServiceOnlyBootstrap, self).run_distribute()

    def run_distribute(self):
        info_main('# Creating Android project from build and {} bootstrap'.format(
            self.name))

        # src_path = join(self.ctx.root_dir, 'bootstrap_templates',
        #                 self.name)
        src_path = join(self.bootstrap_dir, 'build')

        arch = self.ctx.archs[0]
        if len(self.ctx.archs) > 1:
            raise ValueError('built for more than one arch, but bootstrap cannot handle that yet')
        info('Bootstrap running with arch {}'.format(arch))

        with current_directory(self.dist_dir):

            info('Creating initial layout')
            for dirname in ('assets', 'bin', 'private', 'res', 'templates'):
                if not exists(dirname):
                    shprint(sh.mkdir, dirname)

            info('Copying default files')
            shprint(sh.cp, '-a', join(self.build_dir, 'project.properties'), '.')
            shprint(sh.cp, '-a', join(src_path, 'build.py'), '.')
            shprint(sh.cp, '-a', join(src_path, 'buildlib'), '.')
            shprint(sh.cp, '-a', join(src_path, 'src'), '.')
            shprint(sh.cp, '-a', join(src_path, 'templates'), '.')
            shprint(sh.cp, '-a', join(src_path, 'res'), '.')
            shprint(sh.cp, '-a', join(src_path, 'blacklist.txt'), '.')
            shprint(sh.cp, '-a', join(src_path, 'whitelist.txt'), '.')

            with open('local.properties', 'w') as fileh:
                fileh.write('sdk.dir={}'.format(self.ctx.sdk_dir))

            info('Copying python distribution')

            python_bundle_dir = join('_python_bundle', '_python_bundle')
            if 'python2legacy' in self.ctx.recipe_build_order:
                # a special case with its own packaging location
                python_bundle_dir = 'private'
                # And also must had an install directory, make sure of that
                self.ctx.python_recipe.create_python_install(self.dist_dir)

            self.distribute_libs(
                arch, [join(self.build_dir, 'libs', arch.arch),
                       self.ctx.get_libs_dir(arch.arch)])
            self.distribute_aars(arch)
            self.distribute_javaclasses(self.ctx.javaclass_dir)

            ensure_dir(python_bundle_dir)
            site_packages_dir = self.ctx.python_recipe.create_python_bundle(
                join(self.dist_dir, python_bundle_dir), arch)

            if 'sqlite3' not in self.ctx.recipe_build_order:
                with open('blacklist.txt', 'a') as fileh:
                    fileh.write('\nsqlite3/*\nlib-dynload/_sqlite3.so\n')

        self.strip_libraries(arch)
        self.fry_eggs(site_packages_dir)
        super(PygameBootstrap, self).run_distribute()

 def distribute_libs(self, arch, src_dirs, wildcard='*', dest_dir="libs"):
     '''Copy existing arch libs from build dirs to current dist dir.'''
     info('Copying libs')
     tgt_dir = join(dest_dir, arch.arch)
     ensure_dir(tgt_dir)
     for src_dir in src_dirs:
         for lib in glob.glob(join(src_dir, wildcard)):
             shprint(sh.cp, '-a', lib, tgt_dir)

    def run_distribute(self):
        info_main("# Creating Android project ({})".format(self.name))

        arch = self.ctx.archs[0]
        python_install_dir = self.ctx.get_python_install_dir()
        from_crystax = self.ctx.python_recipe.from_crystax

        if len(self.ctx.archs) > 1:
            raise ValueError("SDL2/gradle support only one arch")

        info("Copying SDL2/gradle build for {}".format(arch))
        shprint(sh.rm, "-rf", self.dist_dir)
        shprint(sh.cp, "-r", self.build_dir, self.dist_dir)

        # either the build use environment variable (ANDROID_HOME)
        # or the local.properties if exists
        with current_directory(self.dist_dir):
            with open('local.properties', 'w') as fileh:
                fileh.write('sdk.dir={}'.format(self.ctx.sdk_dir))

        with current_directory(self.dist_dir):
            info("Copying Python distribution")

            hostpython = sh.Command(self.ctx.hostpython)
            if self.ctx.python_recipe.name == 'python2':
                try:
                    shprint(hostpython, '-OO', '-m', 'compileall',
                            python_install_dir,
                            _tail=10, _filterout="^Listing")
                except sh.ErrorReturnCode:
                    pass
                if 'python2' in self.ctx.recipe_build_order and not exists('python-install'):
                    shprint(
                        sh.cp, '-a', python_install_dir, './python-install')

            self.distribute_libs(arch, [self.ctx.get_libs_dir(arch.arch)])
            self.distribute_javaclasses(self.ctx.javaclass_dir,
                                        dest_dir=join("src", "main", "java"))

            python_bundle_dir = join('_python_bundle', '_python_bundle')
            if 'python2' in self.ctx.recipe_build_order:
                # Python 2 is a special case with its own packaging location
                python_bundle_dir = 'private'
            ensure_dir(python_bundle_dir)

            site_packages_dir = self.ctx.python_recipe.create_python_bundle(
                join(self.dist_dir, python_bundle_dir), arch)

            if 'sqlite3' not in self.ctx.recipe_build_order:
                with open('blacklist.txt', 'a') as fileh:
                    fileh.write('\nsqlite3/*\nlib-dynload/_sqlite3.so\n')

        self.strip_libraries(arch)
        self.fry_eggs(site_packages_dir)
        super(SDL2GradleBootstrap, self).run_distribute()

    def build_arch(self, arch):
        env = self.get_recipe_env(arch)
        with current_directory(self.get_build_dir(arch.arch)):
            if not exists('configure'):
                shprint(sh.Command('./autogen.sh'), _env=env)
            shprint(sh.Command('autoreconf'), '-vif', _env=env)
            shprint(sh.Command('./configure'),
                    '--host=' + arch.command_prefix,
                    '--prefix=' + self.get_build_dir(arch.arch),
                    '--disable-builddir',
                    '--enable-shared', _env=env)
            # '--with-sysroot={}'.format(self.ctx.ndk_platform),
            # '--target={}'.format(arch.toolchain_prefix),

            # ndk 15 introduces unified headers required --sysroot and
            # -isysroot for libraries and headers. libtool's head explodes
            # trying to weave them into it's own magic. The result is a link
            # failure trying to link libc. We call make to compile the bits
            # and manually link...

            try:
                shprint(sh.make, '-j5', 'libffi.la', _env=env)
            except sh.ErrorReturnCode_2:
                info("make libffi.la failed as expected")
            cc = sh.Command(env['CC'].split()[0])
            cflags = env['CC'].split()[1:]
            host_build = self.get_build_dir(arch.arch)

            arch_flags = ''
            if '-march=' in env['CFLAGS']:
                arch_flags = '-march={}'.format(env['CFLAGS'].split('-march=')[1])

            src_arch = arch.command_prefix.split('-')[0]
            if src_arch == 'x86_64':
                # libffi has not specific arch files for x86_64...so...using
                # the ones from x86 which seems to build fine...
                src_arch = 'x86'

            cflags.extend(arch_flags.split())
            cflags.extend(['-shared', '-fPIC', '-DPIC'])
            cflags.extend(glob(join(host_build, 'src/.libs/*.o')))
            cflags.extend(glob(join(host_build, 'src', src_arch, '.libs/*.o')))

            ldflags = env['LDFLAGS'].split()
            cflags.extend(ldflags)
            cflags.extend(['-Wl,-soname', '-Wl,libffi.so', '-o',
                           '.libs/libffi.so'])

            with current_directory(host_build):
                shprint(cc, *cflags, _env=env)

            ensure_dir(self.ctx.get_libs_dir(arch.arch))
            shprint(sh.cp,
                    join(host_build, '.libs', 'libffi.so'),
                    self.ctx.get_libs_dir(arch.arch))

    def get_recipe_env(self, arch=None):
        env = super(PygameRecipe, self).get_recipe_env(arch)
        env['LDFLAGS'] = env['LDFLAGS'] + ' -L{}'.format(
            self.ctx.get_libs_dir(arch.arch))
        env['LDSHARED'] = join(self.ctx.root_dir, 'tools', 'liblink')
        env['LIBLINK'] = 'NOTNONE'
        env['NDKPLATFORM'] = self.ctx.ndk_platform

        # Every recipe uses its own liblink path, object files are collected and biglinked later
        liblink_path = join(self.get_build_container_dir(arch.arch), 'objects_{}'.format(self.name))
        env['LIBLINK_PATH'] = liblink_path
        ensure_dir(liblink_path)
        return env

    def get_recipe_env(self, arch, with_flags_in_cc=True):
        env = super(CythonRecipe, self).get_recipe_env(arch, with_flags_in_cc)
        env['LDFLAGS'] = env['LDFLAGS'] + ' -L{} '.format(
            self.ctx.get_libs_dir(arch.arch) +
            ' -L{} '.format(self.ctx.libs_dir) +
            ' -L{}'.format(join(self.ctx.bootstrap.build_dir, 'obj', 'local',
                                arch.arch)))
        if self.ctx.python_recipe.from_crystax:
            env['LDFLAGS'] = (env['LDFLAGS'] +
                              ' -L{}'.format(join(self.ctx.bootstrap.build_dir, 'libs', arch.arch)))

        if self.ctx.python_recipe.name == 'python2legacy':
            env['LDSHARED'] = join(self.ctx.root_dir, 'tools', 'liblink.sh')
        else:
            env['LDSHARED'] = env['CC'] + ' -shared'
        # shprint(sh.whereis, env['LDSHARED'], _env=env)
        env['LIBLINK'] = 'NOTNONE'
        env['NDKPLATFORM'] = self.ctx.ndk_platform
        if self.ctx.copy_libs:
            env['COPYLIBS'] = '1'

        # Every recipe uses its own liblink path, object files are
        # collected and biglinked later
        liblink_path = join(self.get_build_container_dir(arch.arch),
                            'objects_{}'.format(self.name))
        env['LIBLINK_PATH'] = liblink_path
        ensure_dir(liblink_path)

        # Add crystax-specific site packages:
        if self.ctx.python_recipe.from_crystax:
            command = sh.Command('python{}'.format(self.ctx.python_recipe.version))
            site_packages_dirs = command(
                '-c', 'import site; print("\\n".join(site.getsitepackages()))')
            site_packages_dirs = site_packages_dirs.stdout.decode('utf-8').split('\n')
            if 'PYTHONPATH' in env:
                env['PYTHONPATH'] = env['PYTHONPATH'] +\
                    ':{}'.format(':'.join(site_packages_dirs))
            else:
                env['PYTHONPATH'] = ':'.join(site_packages_dirs)
            while env['PYTHONPATH'].find("::") > 0:
                env['PYTHONPATH'] = env['PYTHONPATH'].replace("::", ":")
            if env['PYTHONPATH'].endswith(":"):
                env['PYTHONPATH'] = env['PYTHONPATH'][:-1]
            if env['PYTHONPATH'].startswith(":"):
                env['PYTHONPATH'] = env['PYTHONPATH'][1:]

        return env

    def unpack(self, arch):
        info_main('Unpacking {} for {}'.format(self.name, arch))

        build_dir = self.get_build_container_dir(arch)

        user_dir = environ.get('P4A_{}_DIR'.format(self.name.lower()))
        if user_dir is not None:
            info("Installing KivyMD development versoion (from source)")
            self.clean_build()
            shprint(sh.rm, '-rf', build_dir)
            shprint(sh.mkdir, '-p', build_dir)
            shprint(sh.rmdir, build_dir)
            ensure_dir(build_dir)
            ensure_dir(build_dir + "/kivymd")
            shprint(sh.cp, user_dir + '/setup.py', self.get_build_dir(arch) + "/setup.py")
            shprint(sh.cp, '-a', user_dir + "/kivymd", self.get_build_dir(arch) + "/kivymd")
            return

    def build_arch(self, arch):
        # We don't have to actually build anything as CrystaX comes
        # with the necessary modules. They are included by modifying
        # the Android.mk in the jni folder.

        # If the Python version to be used is not prebuilt with the CrystaX
        # NDK, we do have to download it.

        crystax_python_dir = join(self.ctx.ndk_dir, 'sources', 'python')
        if not exists(join(crystax_python_dir, self.version)):
            info(('The NDK does not have a prebuilt Python {}, trying '
                  'to obtain one.').format(self.version))

            if self.version not in prebuilt_download_locations:
                error(('No prebuilt version for Python {} could be found, '
                       'the built cannot continue.'))
                exit(1)

            with temp_directory() as td:
                self.download_file(prebuilt_download_locations[self.version],
                                   join(td, 'downloaded_python'))
                shprint(sh.tar, 'xf', join(td, 'downloaded_python'),
                        '--directory', crystax_python_dir)

            if not exists(join(crystax_python_dir, self.version)):
                error(('Something went wrong, the directory at {} should '
                       'have been created but does not exist.').format(
                           join(crystax_python_dir, self.version)))

        if not exists(join(
                crystax_python_dir, self.version, 'libs', arch.arch)):
            error(('The prebuilt Python for version {} does not contain '
                   'binaries for your chosen architecture "{}".').format(
                       self.version, arch.arch))
            exit(1)

        # TODO: We should have an option to build a new Python. This
        # would also allow linking to openssl and sqlite from CrystaX.

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

        # Instead of using a locally built hostpython, we use the
        # user's Python for now. They must have the right version
        # available. Using e.g. pyenv makes this easy.
        self.ctx.hostpython = 'python{}'.format(self.version)