#!/usr/bin/env python3

#
#    Helper module to build macOS version of various source ports
#    Copyright (C) 2020 Alexey Lysiuk
#
#    This program is free software: you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation, either version 3 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
#

import sys

if sys.hexversion < 0x3070000:
    print('Build module requires Python 3.7 or newer')
    exit(1)

import argparse
import collections
import copy
import hashlib
import os
from platform import machine
import re
import shutil
import subprocess
import typing
import urllib.request
import zipapp


class CommandLineOptions(dict):
    # Rules to combine argument's name and value
    MAKE_RULES = 0
    CMAKE_RULES = 1

    def to_list(self, rules=MAKE_RULES) -> list:
        result = []

        for arg_name, arg_value in self.items():
            if rules == CommandLineOptions.MAKE_RULES:
                option = arg_name + ('=' + arg_value if arg_value else '')
            elif rules == CommandLineOptions.CMAKE_RULES:
                arg_value = arg_value if arg_value else ''
                option = f'-D{arg_name}={arg_value}'
            else:
                assert False, 'Unknown argument rules'

            result.append(option)

        return result


class BaseTarget:
    def __init__(self, name=None):
        self.name = name
        self.multi_platform = False

    def prepare_source(self, builder: 'Builder'):
        pass

    def initialize(self, builder: 'Builder'):
        pass

    def detect(self, builder: 'Builder') -> bool:
        return False

    def configure(self, builder: 'Builder'):
        pass

    def build(self, builder: 'Builder'):
        pass

    def post_build(self, builder: 'Builder'):
        pass


class Target(BaseTarget):
    def __init__(self, name=None):
        super().__init__(name)

        self.src_root = ''
        self.prefix = None
        self.environment = os.environ.copy()
        self.options = CommandLineOptions()
        self.multi_platform = True

    def initialize(self, builder: 'Builder'):
        self.prefix = builder.deps_path + self.name

    def configure(self, builder: 'Builder'):
        os.makedirs(builder.build_path, exist_ok=True)

        env = self.environment
        env['PATH'] = env['PATH'] \
            + os.pathsep + '/Applications/CMake.app/Contents/bin' \
            + os.pathsep + builder.bin_path
        env['CC'] = builder.c_compiler()
        env['CXX'] = builder.cxx_compiler()

        for prefix in ('CPP', 'C', 'CXX', 'OBJC', 'OBJCXX'):
            varname = f'{prefix}FLAGS'

            self._update_env(varname, f'-I{builder.include_path}')
            self._set_sdk(builder, varname)
            self._set_os_version(builder, varname)

        ldflags = 'LDFLAGS'
        self._update_env(ldflags, f'-L{builder.lib_path}')
        self._set_sdk(builder, ldflags)
        self._set_os_version(builder, ldflags)

    def _update_env(self, name: str, value: str):
        env = self.environment
        env[name] = env[name] + ' ' + value if name in env else value

    def _set_sdk(self, builder: 'Builder', varname: str):
        sdk_path = builder.sdk_path()
        if sdk_path:
            self._update_env(varname, '-isysroot ' + sdk_path)

    def _set_os_version(self, builder: 'Builder', varname: str):
        os_version = builder.os_version()
        if os_version:
            self._update_env(varname, '-mmacosx-version-min=' + os_version)

    def install(self, builder: 'Builder', options: 'CommandLineOptions' = None, tool: str = 'make'):
        if builder.xcode:
            return

        if os.path.exists(self.prefix):
            shutil.rmtree(self.prefix)

        args = [tool, 'install']
        args += options and options.to_list() or []

        work_path = builder.build_path + self.src_root
        subprocess.check_call(args, cwd=work_path, env=self.environment)

        self.update_pc_files()

    @staticmethod
    def update_text_file(path: str, processor: typing.Callable = None):
        with open(path, 'r') as f:
            content = f.readlines()

        patched_content = []

        for line in content:
            patched_line = processor(line) if processor else line

            if patched_line:
                patched_content.append(patched_line)

        with open(path, 'w') as f:
            f.writelines(patched_content)

    @staticmethod
    def update_prefix_shell_script(path: str, processor: typing.Callable = None):
        prefix = 'prefix='

        def update_prefix(line: str) -> str:
            if line.startswith(prefix):
                patched_line = prefix + r'"$(cd "${0%/*}/.."; pwd)"' + os.linesep
            else:
                patched_line = line

            if processor:
                patched_line = processor(patched_line)

            return patched_line

        Target.update_text_file(path, update_prefix)

    @staticmethod
    def update_pc_file(path: str, processor: typing.Callable = None):
        prefix = 'prefix='

        def pc_proc(line: str) -> str:
            patched_line = line

            if line.startswith(prefix):
                # Clear prefix variable
                patched_line = prefix + os.linesep

            if processor:
                patched_line = processor(path, patched_line)

            return patched_line

        Target.update_text_file(path, pc_proc)

    def update_pc_files(self):
        for root, _, files in os.walk(self.prefix, followlinks=True):
            for filename in files:
                if filename.endswith('.pc'):
                    file_path = root + os.sep + filename
                    Target.update_pc_file(file_path, self._process_pkg_config)

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        assert pcfile
        return line

    def write_pc_file(self, filename=None, name=None, description=None, version='',
                      requires='', requires_private='', libs='', libs_private='', cflags=''):
        pkgconfig_path = self.prefix + '/lib/pkgconfig/'
        os.makedirs(pkgconfig_path, exist_ok=True)

        if not filename:
            filename = self.name + '.pc'
        if not name:
            name = self.name
        if not description:
            description = self.name
        if not libs:
            libs = '-l' + self.name

        pc_content = f'''prefix=
exec_prefix=${{prefix}}
libdir=${{exec_prefix}}/lib
includedir=${{prefix}}/include

Name: {name}
Description: {description}
Version: {version}
Requires: {requires}
Requires.private: {requires_private}
Libs: -L${{libdir}} {libs}
Libs.private: {libs_private}
Cflags: -I${{includedir}} {cflags}
'''
        with open(pkgconfig_path + filename, 'w') as f:
            f.write(pc_content)

    def make_platform_header(self, builder: 'Builder', header: str):
        include_path = self.prefix + os.sep + 'include' + os.sep
        include_platform_path = include_path

        header_parts = header.rsplit(os.sep, 1)
        if len(header_parts) == 1:
            header_parts.insert(0, '')

        include_platform_path += header_parts[0] + os.sep + builder.architecture()
        os.makedirs(include_platform_path, exist_ok=True)

        root_header = include_path + header
        shutil.move(root_header, include_platform_path)

        with open(root_header, 'w') as f:
            f.write(f'''
#pragma once

#if defined(__x86_64__)
#   include "x86_64/{header_parts[1]}"
#elif defined(__aarch64__)
#   include "arm64/{header_parts[1]}"
#else
#   error Unknown architecture
#endif
''')


class MakeTarget(Target):
    def __init__(self, name=None):
        super().__init__(name)
        self.tool = 'make'

    def configure(self, builder: 'Builder'):
        super().configure(builder)

        Builder.symlink_directory(builder.source_path, builder.build_path)

    def build(self, builder: 'Builder'):
        assert not builder.xcode

        args = [
            self.tool,
            '-j', builder.jobs,
            'CC=' + builder.c_compiler(),
            'CXX=' + builder.cxx_compiler(),
        ]
        args += self.options.to_list()

        work_path = builder.build_path + self.src_root
        subprocess.check_call(args, cwd=work_path, env=self.environment)


class ConfigureMakeTarget(Target):
    def __init__(self, name=None):
        super().__init__(name)
        self.make = MakeTarget(name)

    def initialize(self, builder: 'Builder'):
        super().initialize(builder)
        self.make.initialize(builder)

    def configure(self, builder: 'Builder'):
        super().configure(builder)
        self.make.configure(builder)

        work_path = builder.build_path + self.src_root
        configure_path = work_path + os.sep + 'configure'

        common_args = [
            configure_path,
            '--prefix=' + self.prefix,
        ]
        common_args += self.options.to_list()

        disable_dependency_tracking = '--disable-dependency-tracking'
        host = '--host=' + builder.host()

        args = copy.copy(common_args)
        args.append(host)
        args.append(disable_dependency_tracking)

        try:
            # Try with host and disabled dependency tracking first
            subprocess.check_call(args, cwd=work_path, env=self.environment)
        except subprocess.CalledProcessError:
            # If it fails, try with disabled dependency tracking only
            args = copy.copy(common_args)
            args.append(disable_dependency_tracking)

            try:
                subprocess.check_call(args, cwd=work_path, env=self.environment)
            except subprocess.CalledProcessError:
                # Use only common command line arguments
                subprocess.check_call(common_args, cwd=work_path, env=self.environment)

    def build(self, builder: 'Builder'):
        assert not builder.xcode
        self.make.build(builder)


class ConfigureMakeDependencyTarget(ConfigureMakeTarget):
    def __init__(self, name=None):
        super().__init__(name)

    def post_build(self, builder: 'Builder'):
        self.install(builder)


class ConfigureMakeStaticDependencyTarget(ConfigureMakeDependencyTarget):
    def __init__(self, name=None):
        super().__init__(name)
        self.options['--enable-shared'] = 'no'


class CMakeTarget(Target):
    def __init__(self, name=None):
        super().__init__(name)

    def detect(self, builder: 'Builder') -> bool:
        src_root = self.src_root and os.sep + self.src_root or ''
        cmakelists_path = builder.source_path + src_root + os.sep + 'CMakeLists.txt'

        if not os.path.exists(cmakelists_path):
            return False

        for line in open(cmakelists_path).readlines():
            project_name = CMakeTarget._extract_project_name(line)
            if project_name:
                project_name = project_name.lower()
                project_name = project_name.replace(' ', '-')
                break
        else:
            return False

        return project_name == self.name

    @staticmethod
    def _extract_project_name(line: str):
        project_name = None

        # Try to get project name without whitespaces in it
        match = re.search(r'project\s*\(\s*(\w[\w-]+)', line, re.IGNORECASE)

        if not match:
            # Try to get project name that contains whitespaces
            match = re.search(r'project\s*\(\s*"?(\w[\s\w-]+)"?', line, re.IGNORECASE)

        if match:
            project_name = match.group(1)

        return project_name

    def configure(self, builder: 'Builder'):
        super().configure(builder)

        args = [
            'cmake',
            builder.xcode and '-GXcode' or '-GUnix Makefiles',
            '-DCMAKE_C_COMPILER=' + builder.c_compiler(),
            '-DCMAKE_CXX_COMPILER=' + builder.cxx_compiler(),
            '-DCMAKE_BUILD_TYPE=Release',
            '-DCMAKE_INSTALL_PREFIX=' + self.prefix,
            '-DCMAKE_PREFIX_PATH=' + builder.prefix_path,
        ]

        if not builder.xcode:
            architecture = builder.architecture()
            if architecture != machine():
                args.append('-DCMAKE_SYSTEM_NAME=Darwin')
                args.append('-DCMAKE_SYSTEM_PROCESSOR=' + 'aarch64' if architecture == 'arm64' else architecture)

        os_version = builder.os_version()
        if os_version:
            args.append('-DCMAKE_OSX_DEPLOYMENT_TARGET=' + os_version)

        sdk_path = builder.sdk_path()
        if sdk_path:
            args.append('-DCMAKE_OSX_SYSROOT=' + sdk_path)

        args += self.options.to_list(CommandLineOptions.CMAKE_RULES)
        args.append(builder.source_path + self.src_root)

        subprocess.check_call(args, cwd=builder.build_path, env=self.environment)

    def build(self, builder: 'Builder'):
        if builder.xcode:
            # TODO: support case-sensitive file system
            args = ('open', self.name + '.xcodeproj')
        else:
            args = ['make', '-j', builder.jobs]

            if builder.verbose:
                args.append('VERBOSE=1')

        subprocess.check_call(args, cwd=builder.build_path)


class CMakeStaticDependencyTarget(CMakeTarget):
    def __init__(self, name=None):
        super().__init__(name)

        # Set commonly used variables for static libraries
        opts = self.options
        opts['BUILD_SHARED_LIBS'] = 'NO'
        opts['ENABLE_SHARED'] = 'NO'
        opts['LIBTYPE'] = 'STATIC'

    def post_build(self, builder: 'Builder'):
        self.install(builder)


class CMakeOutputTarget(CMakeTarget):
    def __init__(self, name=None):
        super().__init__(name)
        self.outputs = (self.name + '.app',)

    def initialize(self, builder: 'Builder'):
        super().initialize(builder)
        self.prefix = builder.output_path + self.name

    def post_build(self, builder: 'Builder'):
        if builder.xcode:
            return

        if os.path.exists(self.prefix):
            shutil.rmtree(self.prefix)

        os.makedirs(self.prefix)

        for output in self.outputs:
            src = builder.build_path + output
            dst = self.prefix + os.sep + output

            copy_func = shutil.copytree if os.path.isdir(src) else shutil.copy
            copy_func(src, dst)


class ZDoomBaseTarget(CMakeOutputTarget):
    def __init__(self, name=None):
        super().__init__(name)

    def configure(self, builder: 'Builder'):
        opts = self.options
        opts['CMAKE_EXE_LINKER_FLAGS'] = builder.run_pkg_config('--libs', 'fluidsynth', 'libmpg123')
        opts['PK3_QUIET_ZIPDIR'] = 'YES'
        opts['DYN_OPENAL'] = 'NO'
        # Explicit OpenAL configuration to avoid selection of Apple's framework
        opts['OPENAL_INCLUDE_DIR'] = builder.include_path + 'AL'
        opts['OPENAL_LIBRARY'] = builder.lib_path + 'libopenal.a'

        if builder.architecture() != machine():
            opts['FORCE_CROSSCOMPILE'] = 'YES'
            opts['IMPORT_EXECUTABLES'] = builder.native_build_path + 'ImportExecutables.cmake'

        super().configure(builder)


class GZDoomTarget(ZDoomBaseTarget):
    def __init__(self, name='gzdoom'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/coelckers/gzdoom.git')

    def post_build(self, builder: 'Builder'):
        # Put MoltenVK library into application bundle
        molten_lib = 'libMoltenVK.dylib'
        src_path = builder.lib_path + molten_lib
        dst_path = builder.build_path

        if builder.xcode:
            # TODO: Support other configurations
            dst_path += 'Debug' + os.sep

        dst_path += self.name + '.app/Contents/MacOS' + os.sep
        os.makedirs(dst_path, exist_ok=True)

        dst_path += molten_lib

        if not os.path.exists(dst_path):
            copy_func = builder.xcode and os.symlink or shutil.copy
            copy_func(src_path, dst_path)

        super().post_build(builder)


class QZDoomTarget(GZDoomTarget):
    def __init__(self, name='qzdoom'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/madame-rachelle/qzdoom.git')


class LZDoomTarget(ZDoomBaseTarget):
    def __init__(self, name='lzdoom'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/drfrag666/gzdoom.git')

    def initialize(self, builder: 'Builder'):
        super().initialize(builder)

        opts = self.options
        opts['DYN_FLUIDSYNTH'] = 'NO'
        opts['DYN_MPG123'] = 'NO'
        opts['DYN_SNDFILE'] = 'NO'


class RazeTarget(ZDoomBaseTarget):
    def __init__(self, name='raze'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/coelckers/Raze.git')


class AccTarget(CMakeOutputTarget):
    def __init__(self, name='acc'):
        super().__init__(name)
        self.outputs = ('acc',)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/rheit/acc.git')


class PrBoomPlusTarget(CMakeOutputTarget):
    def __init__(self, name='prboom-plus'):
        super().__init__(name)
        self.src_root = 'prboom2'
        self.outputs = ('Launcher.app',)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/coelckers/prboom-plus.git')

    def configure(self, builder: 'Builder'):
        opts = self.options
        opts['CMAKE_C_FLAGS'] = '-D_FILE_OFFSET_BITS=64'
        opts['CMAKE_EXE_LINKER_FLAGS'] = builder.run_pkg_config('--libs', 'SDL2_mixer', 'SDL2_image')
        opts['CMAKE_POLICY_DEFAULT_CMP0056'] = 'NEW'

        super().configure(builder)


class ChocolateDoomTarget(CMakeOutputTarget):
    def __init__(self, name='chocolate-doom'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/chocolate-doom/chocolate-doom.git')

    def configure(self, builder: 'Builder'):
        self.options['CMAKE_EXE_LINKER_FLAGS'] = builder.run_pkg_config('--libs', 'SDL2_mixer')

        super().configure(builder)


class CrispyDoomTarget(ChocolateDoomTarget):
    def __init__(self, name='crispy-doom'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/fabiangreffrath/crispy-doom.git')


class DoomRetroTarget(CMakeOutputTarget):
    def __init__(self, name='doomretro'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/bradharding/doomretro.git')


class Doom64EXTarget(CMakeOutputTarget):
    def __init__(self, name='doom64ex'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/svkaiser/Doom64EX.git')

    def configure(self, builder: 'Builder'):
        opts = self.options
        opts['ENABLE_SYSTEM_FLUIDSYNTH'] = 'YES'
        opts['CMAKE_EXE_LINKER_FLAGS'] = builder.run_pkg_config('--libs', 'SDL2', 'fluidsynth')

        super().configure(builder)


class DevilutionXTarget(CMakeOutputTarget):
    def __init__(self, name='devilutionx'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/diasurgical/devilutionX.git')

    def configure(self, builder: 'Builder'):
        self.options['CMAKE_EXE_LINKER_FLAGS'] = builder.run_pkg_config('--libs', 'SDL2_mixer', 'SDL2_ttf')

        super().configure(builder)


class EDuke32Target(MakeTarget):
    def __init__(self, name='eduke32'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://voidpoint.io/terminx/eduke32.git')

    def detect(self, builder: 'Builder') -> bool:
        def has_bundle(name: str) -> bool:
            probe_path = f'{builder.source_path}/platform/Apple/bundles/{name}.app'
            return os.path.exists(probe_path)

        return has_bundle('EDuke32') and not has_bundle('NBlood')

    def configure(self, builder: 'Builder'):
        super().configure(builder)

        # Fix missing definition when building with SDK older than 10.12
        self._update_env('CXXFLAGS', '-DCLOCK_MONOTONIC=0')


class NBloodTarget(EDuke32Target):
    def __init__(self, name='nblood'):
        super().__init__(name)
        self.tool = 'gmake'

        for target in ('duke3d', 'sw', 'blood', 'rr', 'exhumed', 'tools'):
            self.options[target] = None

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://github.com/nukeykt/NBlood.git')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + os.sep + 'nblood.pk3')


class QuakespasmTarget(MakeTarget):
    def __init__(self, name='quakespasm'):
        super().__init__(name)
        self.src_root = 'Quake'

        # TODO: Use macOS specific Makefile which requires manual application bundle creation
        opts = self.options
        opts['USE_SDL2'] = '1'
        opts['USE_CODEC_FLAC'] = '1'
        opts['USE_CODEC_OPUS'] = '1'
        opts['USE_CODEC_MIKMOD'] = '1'
        opts['USE_CODEC_UMX'] = '1'
        # Add main() alias to workaround executable linking without macOS launcher
        opts['COMMON_LIBS'] = '-framework OpenGL -Wl,-alias -Wl,_SDL_main -Wl,_main'

    def prepare_source(self, builder: 'Builder'):
        builder.checkout_git('https://git.code.sf.net/p/quakespasm/quakespasm')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + os.sep + 'Quakespasm.txt')


class Bzip2Target(MakeTarget):
    def __init__(self, name='bzip2'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://sourceware.org/pub/bzip2/bzip2-1.0.8.tar.gz',
            'ab5a03176ee106d3f0fa90e381da478ddae405918153cca248e682cd0c4a2269')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'bzlib.h')

    def configure(self, builder: 'Builder'):
        super().configure(builder)

        opts = self.options
        # Add explicit targets in order to skip testing step that is incompatible with cross-compilation
        opts['bzip2'] = None
        opts['bzip2recover'] = None
        # Copy compiler flags from environment to command line argument, they would be overridden by Makefile otherwise
        cflags = 'CFLAGS'
        opts[cflags] = self.environment[cflags] + ' -D_FILE_OFFSET_BITS=64 -O2'

    def post_build(self, builder: 'Builder'):
        self.options['PREFIX'] = self.prefix
        self.install(builder, self.options)

        self.write_pc_file(description='bzip2 compression library', version='1.0.8', libs='-lbz2')


class DumbTarget(CMakeStaticDependencyTarget):
    def __init__(self, name='dumb'):
        super().__init__(name)

        opts = self.options
        opts['BUILD_ALLEGRO4'] = 'NO'
        opts['BUILD_EXAMPLES'] = 'NO'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/kode54/dumb/archive/2.0.3.tar.gz',
            '99bfac926aeb8d476562303312d9f47fd05b43803050cd889b44da34a9b2a4f9')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'include/dumb.h')

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        if line.startswith('libdir='):
            return 'libdir=${exec_prefix}/lib\n'
        elif line.startswith('includedir='):
            return 'includedir=${prefix}/include\n'
        elif line.startswith('Libs:'):
            return 'Libs: -L${libdir} -ldumb\n'

        return line


class FfiTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='ffi'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/libffi/libffi/releases/download/v3.3/libffi-3.3.tar.gz',
            '72fba7922703ddfa7a028d513ac15a85c8d54c8d67f55fa5a4802885dc652056')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'libffi.pc.in')

    def post_build(self, builder: 'Builder'):
        super().post_build(builder)

        for header in ('ffi.h', 'ffitarget.h'):
            self.make_platform_header(builder, header)


class FlacTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='flac'):
        super().__init__(name)
        self.options['--enable-cpplibs'] = 'no'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.xiph.org/releases/flac/flac-1.3.3.tar.xz',
            '213e82bd716c9de6db2f98bcadbc4c24c7e2efe8c75939a1a84e28539c4e1748')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'FLAC/flac.pc.in')


class FluidSynthTarget(CMakeStaticDependencyTarget):
    def __init__(self, name='fluidsynth'):
        super().__init__(name)

        opts = self.options
        opts['LIB_SUFFIX'] = None
        opts['enable-framework'] = 'NO'
        opts['enable-readline'] = 'NO'
        opts['enable-sdl2'] = 'NO'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/FluidSynth/fluidsynth/archive/v2.1.5.tar.gz',
            'b539b7c65a650b56f01cd60a4e83c6125c217c5a63c0c214ef6274894a677d00')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'fluidsynth.pc.in')

    def configure(self, builder: 'Builder'):
        # TODO: Figure out why private dependencies aren't pulled
        self.options['CMAKE_EXE_LINKER_FLAGS'] = builder.run_pkg_config('--libs', 'glib-2.0')
        super().configure(builder)

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        if line.startswith('Version:'):
            # Add instpatch as private dependency which pulls all necessary libraries
            return line + 'Requires.private: libinstpatch-1.0' + os.linesep
        elif line.startswith('Libs:'):
            # Add missing system frameworks to link with
            return line + 'Libs.private: -framework AudioUnit -framework CoreAudio -framework CoreMIDI' + os.linesep

        return line


class FreetypeTarget(CMakeStaticDependencyTarget):
    def __init__(self, name='freetype'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.sourceforge.net/project/freetype/freetype2/2.10.4/freetype-2.10.4.tar.xz',
            '86a854d8905b19698bbc8f23b860bc104246ce4854dcea8e3b0fb21284f75784')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'include/freetype/freetype.h')


class GettextTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='gettext'):
        super().__init__(name)

        opts = self.options
        opts['--enable-csharp'] = 'no'
        opts['--enable-java'] = 'no'
        opts['--enable-libasprintf'] = 'no'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://ftp.gnu.org/gnu/gettext/gettext-0.21.tar.xz',
            'd20fcbb537e02dcf1383197ba05bd0734ef7bf5db06bdb241eb69b7d16b73192')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'gettext-runtime')


class GlibTarget(Target):
    def __init__(self, name='glib'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://download.gnome.org/sources/glib/2.66/glib-2.66.4.tar.xz',
            '97df8670e32f9fd4f7392b0980e661dd625012015d58350da1e58e343f4af984')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'glib.doap')

    def configure(self, builder: 'Builder'):
        super().configure(builder)

        environment = self.environment
        environment['LDFLAGS'] += ' -framework CoreFoundation'

        cpu = builder.architecture()
        cpu_family = 'arm' if 'arm64' == cpu else cpu

        cross_file = builder.build_path + builder.architecture() + '.txt'
        with open(cross_file, 'w') as f:
            f.write(f'''
[binaries]
c = '{builder.c_compiler()}'
cpp = '{builder.cxx_compiler()}'
objc = '{builder.c_compiler()}'
objcpp = '{builder.cxx_compiler()}'
pkgconfig = '{builder.prefix_path}/bin/pkg-config'
strip = '/usr/bin/strip'

[host_machine]
system = 'darwin'
cpu_family = '{cpu_family}'
cpu = '{cpu}'
endian = 'little'
''')

        args = (
            builder.bin_path + 'meson',
            '--prefix=' + self.prefix,
            '--buildtype=release',
            '--default-library=static',
            '--cross-file=' + cross_file,
            builder.source_path
        )
        subprocess.check_call(args, cwd=builder.build_path, env=environment)

    def build(self, builder: 'Builder'):
        args = ('ninja',)
        subprocess.check_call(args, cwd=builder.build_path, env=self.environment)

    def post_build(self, builder: 'Builder'):
        self.install(builder, tool='ninja')


class GmakeTarget(ConfigureMakeDependencyTarget):
    def __init__(self, name='gmake'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://ftp.gnu.org/gnu/make/make-4.3.tar.lz',
            'de1a441c4edf952521db30bfca80baae86a0ff1acd0a00402999344f04c45e82')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'doc/make.1')

    def post_build(self, builder: 'Builder'):
        bin_path = self.prefix + '/bin/'
        os.makedirs(bin_path, exist_ok=True)
        shutil.copy(builder.build_path + 'make', bin_path + self.name)


class IconvTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='iconv'):
        super().__init__(name)
        self.options['--enable-extra-encodings'] = 'yes'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://ftp.gnu.org/gnu/libiconv/libiconv-1.16.tar.gz',
            'e6a1b1b589654277ee790cce3734f07876ac4ccfaecbee8afa0b649cf529cc04')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'include/iconv.h.in')


class InstPatchTarget(CMakeStaticDependencyTarget):
    def __init__(self, name='instpatch'):
        super().__init__(name)
        self.options['LIB_SUFFIX'] = None

        # Workaround for missing frameworks in dependencies, no clue what's wrong at the moment
        self.environment['LDFLAGS'] = '-framework CoreFoundation -framework Foundation'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/swami/libinstpatch/archive/v1.1.5.tar.gz',
            '5fd01cd2ba7377e7a72caaf3b565d8fe088b5c8a14e0ea91516f0c87524bcf8a')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'libinstpatch-1.0.pc.in')


class IntlTarget(GettextTarget):
    def __init__(self, name='intl'):
        super().__init__(name)
        self.src_root = 'gettext-runtime'
        self.make.src_root += self.src_root + os.sep + 'intl'

    def post_build(self, builder: 'Builder'):
        # Do install of intl only, avoid complete gettext runtime
        self.src_root = self.make.src_root
        self.install(builder)


class JpegTurboTarget(CMakeStaticDependencyTarget):
    def __init__(self, name='jpeg-turbo'):
        super().__init__(name)
        self.options['WITH_TURBOJPEG'] = 'NO'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.sourceforge.net/project/libjpeg-turbo/2.0.6/libjpeg-turbo-2.0.6.tar.gz',
            'd74b92ac33b0e3657123ddcf6728788c90dc84dcb6a52013d758af3c4af481bb')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'turbojpeg.h')

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        if line.startswith('exec_prefix='):
            return 'exec_prefix=${prefix}\n'
        elif line.startswith('libdir='):
            return 'libdir=${exec_prefix}/lib\n'
        elif line.startswith('includedir='):
            return 'includedir=${prefix}/include\n'

        return line


class MadTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='mad'):
        super().__init__(name)
        self.options['--enable-fpm'] = '64bit'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.sourceforge.net/project/mad/libmad/0.15.1b/libmad-0.15.1b.tar.gz',
            'bbfac3ed6bfbc2823d3775ebb931087371e142bb0e9bb1bee51a76a6e0078690')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'mad.h')

    def post_build(self, builder: 'Builder'):
        super().post_build(builder)
        self.write_pc_file(description='MPEG Audio Decoder', version='0.15.1b')


class MesonTarget(Target):
    def __init__(self, name='meson'):
        super().__init__(name)
        self.multi_platform = False

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/mesonbuild/meson/releases/download/0.56.0/meson-0.56.0.tar.gz',
            '291dd38ff1cd55fcfca8fc985181dd39be0d3e5826e5f0013bf867be40117213')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'meson.py')

    def post_build(self, builder: 'Builder'):
        script = '__main__.py'
        shutil.copy(builder.source_path + script, builder.build_path)

        module = 'mesonbuild'
        module_path = builder.build_path + module
        if os.path.exists(module_path):
            shutil.rmtree(module_path)
        shutil.copytree(builder.source_path + module, module_path)

        dest_path = builder.deps_path + self.name + os.sep + 'bin' + os.sep
        os.makedirs(dest_path, exist_ok=True)

        zipapp.create_archive(builder.build_path, dest_path + self.name, '/usr/bin/env python3', compressed=True)


class MikmodTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='mikmod'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.sourceforge.net/project/mikmod/libmikmod/3.3.11.1/libmikmod-3.3.11.1.tar.gz',
            'ad9d64dfc8f83684876419ea7cd4ff4a41d8bcd8c23ef37ecb3a200a16b46d19')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'libmikmod.pc.in')

    def post_build(self, builder: 'Builder'):
        super().post_build(builder)
        Target.update_prefix_shell_script(self.prefix + '/bin/libmikmod-config')


class ModPlugTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='modplug'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.sourceforge.net/project/modplug-xmms/libmodplug/0.8.9.0/libmodplug-0.8.9.0.tar.gz',
            '457ca5a6c179656d66c01505c0d95fafaead4329b9dbaa0f997d00a3508ad9de')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'libmodplug.pc.in')

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        libs_private = 'Libs.private:'

        if line.startswith(libs_private):
            return libs_private + ' -lc++\n'

        return line


class MoltenVKTarget(MakeTarget):
    def __init__(self, name='moltenvk'):
        super().__init__(name)
        self.options['macos'] = None
        # Building for multiple architectures is handled internally
        self.multi_platform = False

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/KhronosGroup/MoltenVK/archive/v1.1.1.tar.gz',
            'cd1712c571d4155f4143c435c8551a5cb8cbb311ad7fff03595322ab971682c0')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'MoltenVKPackaging.xcodeproj')

    def build(self, builder: 'Builder'):
        args = ('./fetchDependencies', '--macos', '-v')
        subprocess.check_call(args, cwd=builder.build_path)

        super().build(builder)

    def post_build(self, builder: 'Builder'):
        if builder.xcode:
            return

        if os.path.exists(self.prefix):
            shutil.rmtree(self.prefix)

        lib_path = self.prefix + os.sep + 'lib' + os.sep
        os.makedirs(lib_path)

        src_path = builder.build_path + 'Package/Latest/MoltenVK/'
        shutil.copytree(src_path + 'include', self.prefix + os.sep + 'include')
        shutil.copy(builder.build_path + 'LICENSE', self.prefix + os.sep + 'apache2.txt')
        shutil.copy(src_path + 'dylib/macOS/libMoltenVK.dylib', lib_path)


class Mpg123Target(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='mpg123'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://www.mpg123.de/download/mpg123-1.26.4.tar.bz2',
            '081991540df7a666b29049ad870f293cfa28863b36488ab4d58ceaa7b5846454')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'libmpg123.pc.in')


class NasmTarget(ConfigureMakeDependencyTarget):
    def __init__(self, name='nasm'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://www.nasm.us/pub/nasm/releasebuilds/2.15.05/nasm-2.15.05.tar.xz',
            '3caf6729c1073bf96629b57cee31eeb54f4f8129b01902c73428836550b30a3f')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'nasm.txt')


class NinjaTarget(MakeTarget):
    def __init__(self, name='ninja'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/ninja-build/ninja/archive/v1.10.2.tar.gz',
            'ce35865411f0490368a8fc383f29071de6690cbadc27704734978221f25e2bed')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'src/ninja.cc')

    def build(self, builder: 'Builder'):
        args = ('python3', './configure.py', '--bootstrap', '--verbose')
        subprocess.check_call(args, cwd=builder.build_path)

    def post_build(self, builder: 'Builder'):
        dest_path = builder.deps_path + self.name + os.sep + 'bin'
        os.makedirs(dest_path, exist_ok=True)
        shutil.copy(builder.build_path + self.name, dest_path)


class OggTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='ogg'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.xiph.org/releases/ogg/libogg-1.3.4.tar.gz',
            'fe5670640bd49e828d64d2879c31cb4dde9758681bb664f9bdbf159a01b0c76e')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'ogg.pc.in')


class OpenALTarget(CMakeStaticDependencyTarget):
    def __init__(self, name='openal'):
        super().__init__(name)

        opts = self.options
        opts['ALSOFT_EXAMPLES'] = 'NO'
        opts['ALSOFT_UTILS'] = 'NO'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://openal-soft.org/openal-releases/openal-soft-1.21.0.tar.bz2',
            '2916b4fc24e23b0271ce0b3468832ad8b6d8441b1830215b28cc4fee6cc89297')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'openal.pc.in')

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        libs_private = 'Libs.private:'

        if line.startswith(libs_private):
            # Fix full paths to OS frameworks
            return libs_private + ' -framework ApplicationServices -framework AudioToolbox'\
                                  ' -framework AudioUnit -framework CoreAudio' + os.linesep
        else:
            return line


class OpusTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='opus'):
        super().__init__(name)
        self.options['--disable-extra-programs'] = None

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://archive.mozilla.org/pub/opus/opus-1.3.1.tar.gz',
            '65b58e1e25b2a114157014736a3d9dfeaad8d41be1c8179866f144a2fb44ff9d')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'opus.pc.in')


class OpusFileTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='opusfile'):
        super().__init__(name)
        self.options['--enable-http'] = 'no'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.xiph.org/releases/opus/opusfile-0.12.tar.gz',
            '118d8601c12dd6a44f52423e68ca9083cc9f2bfe72da7a8c1acb22a80ae3550b')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'opusfile.pc.in')


class PcreTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='pcre'):
        super().__init__(name)

        opts = self.options
        opts['--enable-unicode-properties'] = 'yes'
        opts['--enable-cpp'] = 'no'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://ftp.pcre.org/pub/pcre/pcre-8.44.tar.bz2',
            '19108658b23b3ec5058edc9f66ac545ea19f9537234be1ec62b714c84399366d')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'pcre.h.in')


class PkgConfigTarget(ConfigureMakeDependencyTarget):
    def __init__(self, name='pkg-config'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://pkg-config.freedesktop.org/releases/pkg-config-0.29.2.tar.gz',
            '6fc69c01688c9458a57eb9a1664c9aba372ccda420a02bf4429fe610e7e7d591')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'pkg-config.1')

    def post_build(self, builder: 'Builder'):
        src_path = builder.build_path + 'pkg-config'
        dst_path = builder.deps_path + self.name + os.sep + 'bin' + os.sep + 'pkg-config.exe'
        shutil.copy(src_path, dst_path)


class PngTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='png'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.sourceforge.net/libpng/libpng-1.6.37.tar.xz',
            '505e70834d35383537b6491e7ae8641f1a4bed1876dbfe361201fc80868d88ca')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'libpng.pc.in')

    def post_build(self, builder: 'Builder'):
        super().post_build(builder)
        Target.update_prefix_shell_script(self.prefix + '/bin/libpng16-config')


class PortMidiTarget(CMakeTarget):
    def __init__(self, name='portmidi'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.sourceforge.net/project/portmedia/portmidi/217/portmidi-src-217.zip',
            '08e9a892bd80bdb1115213fb72dc29a7bf2ff108b378180586aa65f3cfd42e0f')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'pm_common/portmidi.h')

    def post_build(self, builder: 'Builder'):
        if os.path.exists(self.prefix):
            shutil.rmtree(self.prefix)

        include_path = self.prefix + os.sep + 'include'
        os.makedirs(include_path)
        shutil.copy(builder.source_path + 'pm_common/portmidi.h', include_path)
        shutil.copy(builder.source_path + 'porttime/porttime.h', include_path)

        lib_path = self.prefix + os.sep + 'lib' + os.sep
        os.makedirs(lib_path)
        shutil.copy(builder.build_path + 'libportmidi_s.a', lib_path + 'libportmidi.a')


class SamplerateTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='samplerate'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'http://www.mega-nerd.com/SRC/libsamplerate-0.1.9.tar.gz',
            '0a7eb168e2f21353fb6d84da152e4512126f7dc48ccb0be80578c565413444c1')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'samplerate.pc.in')


class Sdl2Target(CMakeStaticDependencyTarget):
    def __init__(self, name='sdl2'):
        super().__init__(name)

        # Need to have uniform settings for x86_64 and arm64 because of linking with Metal framework
        # TODO: Remove this when default target for x64 will become 10.11+
        opts = self.options
        opts['VIDEO_VULKAN'] = 'NO'
        opts['VIDEO_METAL'] = 'NO'
        opts['RENDER_METAL'] = 'NO'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://libsdl.org/release/SDL2-2.0.14.tar.gz',
            'd8215b571a581be1332d2106f8036fcb03d12a70bae01e20f424976d275432bc')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'sdl2.pc.in')

    LINKER_FLAGS = ' -L${libdir} -lSDL2'\
        ' -framework AudioToolbox -framework AVFoundation -framework Carbon -framework Cocoa'\
        ' -framework CoreAudio -framework CoreFoundation -framework CoreVideo'\
        ' -framework ForceFeedback -framework Foundation -framework IOKit\n'

    def post_build(self, builder: 'Builder'):
        super().post_build(builder)

        def update_libs(line: str):
            if line.startswith('      echo -L${exec_prefix}/lib'):
                return '      echo' + Sdl2Target.LINKER_FLAGS

            return line

        Target.update_prefix_shell_script(self.prefix + '/bin/sdl2-config', update_libs)

        self.make_platform_header(builder, 'SDL2/SDL_config.h')

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        libs = 'Libs:'

        if line.startswith(libs):
            return libs + Sdl2Target.LINKER_FLAGS

        return line


class Sdl2ImageTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='sdl2_image'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://www.libsdl.org/projects/SDL_image/release/SDL2_image-2.0.5.tar.gz',
            'bdd5f6e026682f7d7e1be0b6051b209da2f402a2dd8bd1c4bd9c25ad263108d0')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'SDL2_image.pc.in')

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        return line + 'Requires.private: libwebp\n' if line.startswith('Requires:') else line


class Sdl2MixerTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='sdl2_mixer'):
        super().__init__(name)
        self.options['--enable-music-mod-mikmod'] = 'yes'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://www.libsdl.org/projects/SDL_mixer/release/SDL2_mixer-2.0.4.tar.gz',
            'b4cf5a382c061cd75081cf246c2aa2f9df8db04bdda8dcdc6b6cca55bede2419')

    def configure(self, builder: 'Builder'):
        # Set LDFLAGS explicitly to help with FluidSynth and FLAC detection
        self.environment['LDFLAGS'] = builder.run_pkg_config('--libs', 'fluidsynth')

        super().configure(builder)

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'SDL2_mixer.pc.in')

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        if line.startswith('Requires:'):
            return line + 'Requires.private: fluidsynth libmikmod libmodplug libmpg123 opusfile vorbisfile\n'

        return line


class Sdl2NetTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='sdl2_net'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://www.libsdl.org/projects/SDL_net/release/SDL2_net-2.0.1.tar.gz',
            '15ce8a7e5a23dafe8177c8df6e6c79b6749a03fff1e8196742d3571657609d21')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'SDL2_net.pc.in')


class Sdl2TtfTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='sdl2_ttf'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://www.libsdl.org/projects/SDL_ttf/release/SDL2_ttf-2.0.15.tar.gz',
            'a9eceb1ad88c1f1545cd7bd28e7cbc0b2c14191d40238f531a15b01b1b22cd33')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'SDL2_ttf.pc.in')

    @staticmethod
    def _process_pkg_config(pcfile: str, line: str) -> str:
        return line + 'Requires.private: freetype2\n' if line.startswith('Requires:') else line


class SndFileTarget(CMakeStaticDependencyTarget):
    def __init__(self, name='sndfile'):
        super().__init__(name)

        opts = self.options
        opts['BUILD_REGTEST'] = 'NO'
        opts['BUILD_TESTING'] = 'NO'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/libsndfile/libsndfile/releases/download/v1.0.30/libsndfile-1.0.30.tar.bz2',
            '9df273302c4fa160567f412e10cc4f76666b66281e7ba48370fb544e87e4611a')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'sndfile.pc.in')


class SodiumTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='sodium'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://download.libsodium.org/libsodium/releases/libsodium-1.0.18.tar.gz',
            '6f504490b342a4f8a4c4a02fc9b866cbef8622d5df4e5452b46be121e46636c1')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'libsodium.pc.in')


class VorbisTarget(ConfigureMakeStaticDependencyTarget):
    def __init__(self, name='vorbis'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://downloads.xiph.org/releases/vorbis/libvorbis-1.3.7.tar.xz',
            'b33cc4934322bcbf6efcbacf49e3ca01aadbea4114ec9589d1b1e9d20f72954b')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'vorbis.pc.in')


class VpxTarget(ConfigureMakeDependencyTarget):
    def __init__(self, name='vpx'):
        super().__init__(name)

        opts = self.options
        opts['--disable-examples'] = None
        opts['--disable-unit-tests'] = None

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/webmproject/libvpx/archive/v1.9.0.tar.gz',
            'd279c10e4b9316bf11a570ba16c3d55791e1ad6faa4404c67422eb631782c80a')

    def configure(self, builder: 'Builder'):
        hosts = {
            'x86_64': 'x86_64-darwin13-gcc',
            'arm64': 'arm64-darwin20-gcc',
        }
        self.options['--target'] = hosts[builder.architecture()]

        super().configure(builder)

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'vpxstats.h')


class WebpTarget(CMakeStaticDependencyTarget):
    def __init__(self, name='webp'):
        super().__init__(name)

        opts = self.options
        opts['WEBP_BUILD_ANIM_UTILS'] = 'NO'
        opts['WEBP_BUILD_CWEBP'] = 'NO'
        opts['WEBP_BUILD_DWEBP'] = 'NO'
        opts['WEBP_BUILD_GIF2WEBP'] = 'NO'
        opts['WEBP_BUILD_IMG2WEBP'] = 'NO'
        opts['WEBP_BUILD_VWEBP'] = 'NO'
        opts['WEBP_BUILD_WEBPINFO'] = 'NO'
        opts['WEBP_BUILD_WEBPMUX'] = 'NO'
        opts['WEBP_BUILD_EXTRAS'] = 'NO'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.1.0.tar.gz',
            '98a052268cc4d5ece27f76572a7f50293f439c17a98e67c4ea0c7ed6f50ef043')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'src/libwebp.pc.in')


class YasmTarget(ConfigureMakeDependencyTarget):
    def __init__(self, name='yasm'):
        super().__init__(name)

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://www.tortall.net/projects/yasm/releases/yasm-1.3.0.tar.gz',
            '3dce6601b495f5b3d45b59f7d2492a340ee7e84b5beca17e48f862502bd5603f')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'libyasm.h')


class ZlibTarget(ConfigureMakeDependencyTarget):
    def __init__(self, name='zlib'):
        super().__init__(name)
        self.options['--static'] = None

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://zlib.net/zlib-1.2.11.tar.gz',
            'c3e5e9fdd5004dcb542feda5ee4f0ff0744628baf8ed2dd5d66f8ca1197cb1a1')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'zlib.pc.in')


class ZMusicTarget(CMakeStaticDependencyTarget):
    def __init__(self, name='zmusic'):
        super().__init__(name)

        opts = self.options
        opts['DYN_FLUIDSYNTH'] = 'OFF'
        opts['DYN_MPG123'] = 'OFF'
        opts['DYN_SNDFILE'] = 'OFF'

    def prepare_source(self, builder: 'Builder'):
        builder.download_source(
            'https://github.com/coelckers/ZMusic/archive/1.1.4.tar.gz',
            '29a18a6a8d0db4978a9d5badbbd612be2337d64ef0d768e944ea70f526eae285')

    def detect(self, builder: 'Builder') -> bool:
        return os.path.exists(builder.source_path + 'include/zmusic.h')

    def post_build(self, builder: 'Builder'):
        if builder.xcode:
            return

        if os.path.exists(self.prefix):
            shutil.rmtree(self.prefix)

        lib_path = self.prefix + os.sep + 'lib' + os.sep
        os.makedirs(lib_path)

        shutil.copytree(builder.source_path + 'include', self.prefix + os.sep + 'include')

        args = (
            'libtool',
            '-static',
            '-o', lib_path + 'libzmusic.a',
            'source/libzmusic.a',
            'thirdparty/adlmidi/libadl.a',
            'thirdparty/dumb/libdumb.a',
            'thirdparty/game-music-emu/gme/libgme.a',
            'thirdparty/oplsynth/liboplsynth.a',
            'thirdparty/opnmidi/libopn.a',
            'thirdparty/timidity/libtimidity.a',
            'thirdparty/timidityplus/libtimidityplus.a',
            'thirdparty/wildmidi/libwildmidi.a',
        )
        subprocess.check_call(args, cwd=builder.build_path)

        args = (
            'libtool',
            '-static',
            '-o', lib_path + 'libzmusiclite.a',
            'source/libzmusiclite.a',
            'thirdparty/dumb/libdumb.a',
            'thirdparty/game-music-emu/gme/libgme.a',
        )
        subprocess.check_call(args, cwd=builder.build_path)


class CleanTarget(BaseTarget):
    def __init__(self, name=None):
        super().__init__(name)
        self.args = ()

    def build(self, builder: 'Builder'):
        args = ('git', 'clean') + self.args
        subprocess.check_call(args, cwd=builder.root_path)


class CleanAllTarget(CleanTarget):
    def __init__(self, name='clean-all'):
        super().__init__(name)
        self.args = ('-dX', '--force')


class CleanDepsTarget(CleanAllTarget):
    def __init__(self, name='clean-deps'):
        super().__init__(name)

    def configure(self, builder: 'Builder'):
        self.args += (builder.deps_path,)


# Case insensitive dictionary class from
# https://github.com/psf/requests/blob/v2.25.0/requests/structures.py

class CaseInsensitiveDict(collections.abc.MutableMapping):
    """A case-insensitive ``dict``-like object.
    Implements all methods and operations of
    ``MutableMapping`` as well as dict's ``copy``. Also
    provides ``lower_items``.
    All keys are expected to be strings. The structure remembers the
    case of the last key to be set, and ``iter(instance)``,
    ``keys()``, ``items()``, ``iterkeys()``, and ``iteritems()``
    will contain case-sensitive keys. However, querying and contains
    testing is case insensitive::
        cid = CaseInsensitiveDict()
        cid['Accept'] = 'application/json'
        cid['aCCEPT'] == 'application/json'  # True
        list(cid) == ['Accept']  # True
    For example, ``headers['content-encoding']`` will return the
    value of a ``'Content-Encoding'`` response header, regardless
    of how the header name was originally stored.
    If the constructor, ``.update``, or equality comparison
    operations are given keys that have equal ``.lower()``s, the
    behavior is undefined.
    """

    def __init__(self, data=None, **kwargs):
        self._store = collections.OrderedDict()
        if data is None:
            data = {}
        self.update(data, **kwargs)

    def __setitem__(self, key, value):
        # Use the lowercased key for lookups, but store the actual
        # key alongside the value.
        self._store[key.lower()] = (key, value)

    def __getitem__(self, key):
        return self._store[key.lower()][1]

    def __delitem__(self, key):
        del self._store[key.lower()]

    def __iter__(self):
        return (casedkey for casedkey, mappedvalue in self._store.values())

    def __len__(self):
        return len(self._store)

    def lower_items(self):
        """Like iteritems(), but with all lowercase keys."""
        return (
            (lowerkey, keyval[1])
            for (lowerkey, keyval)
            in self._store.items()
        )

    def __eq__(self, other):
        if isinstance(other, collections.abc.Mapping):
            other = CaseInsensitiveDict(other)
        else:
            return NotImplemented
        # Compare insensitively
        return dict(self.lower_items()) == dict(other.lower_items())

    # Copy is required
    def copy(self):
        return CaseInsensitiveDict(self._store.values())

    def __repr__(self):
        return str(dict(self.items()))


class TargetPlatform:
    def __init__(self, architecture: str, host: str, os_version: str, sdk_path: str, prefix_path: str):
        self.architecture = architecture
        self.host = host
        self.os_version = os_version
        self.sdk_path = sdk_path
        self.c_compiler = f'{prefix_path}bin/{host}-gcc'
        self.cxx_compiler = f'{prefix_path}bin/{host}-g++'


class Builder(object):
    def __init__(self, args: list):
        self._create_targets()

        self.root_path = os.path.dirname(os.path.abspath(__file__)) + os.sep
        self.deps_path = self.root_path + 'deps' + os.sep
        self.prefix_path = self.root_path + 'prefix' + os.sep
        self.bin_path = self.prefix_path + 'bin' + os.sep
        self.include_path = self.prefix_path + 'include' + os.sep
        self.lib_path = self.prefix_path + 'lib' + os.sep
        self.root_source_path = self.root_path + 'source' + os.sep
        self.patch_path = self.root_path + 'patch' + os.sep

        arguments = self._parse_arguments(args)

        self.xcode = arguments.xcode
        self.checkout_commit = arguments.checkout_commit
        self.build_path = arguments.build_path
        self.output_path = arguments.output_path
        self.verbose = arguments.verbose

        self.platform = None
        self._platforms = []
        self._populate_platforms(arguments)

        if arguments.target:
            self.target = self.targets[arguments.target]
            self.source_path = self.root_source_path + self.target.name
        else:
            assert arguments.source_path
            self.source_path = arguments.source_path
            self._detect_target()

        if not self.build_path:
            self.build_path = self.root_path + 'build' + os.sep + self.target.name + \
                os.sep + (self.xcode and 'xcode' or 'make')

        if not self.output_path:
            self.output_path = self.root_path + 'output'

        self.source_path += os.sep
        self.build_path += os.sep
        self.output_path += os.sep
        self.native_build_path = self.build_path

        self.jobs = arguments.jobs and arguments.jobs or \
            subprocess.check_output(['sysctl', '-n', 'hw.ncpu']).decode('ascii').strip()

        self.target.initialize(self)

    def _populate_platforms(self, arguments):
        def adjust_sdk_path(path: str) -> str:
            if path:
                return path

            sdk_probe_path = f'{self.root_path}sdk{os.sep}MacOSX{os_version}.sdk'
            return sdk_probe_path if os.path.exists(sdk_probe_path) else None

        if not arguments.disable_x64:
            os_version = arguments.os_version_x64 if arguments.os_version_x64 else '10.9'
            sdk_path = adjust_sdk_path(arguments.sdk_path_x64)
            platform = TargetPlatform('x86_64', 'x86_64-apple-darwin', os_version, sdk_path, self.prefix_path)
            self._platforms.append(platform)

        if not arguments.disable_arm:
            os_version = arguments.os_version_arm if arguments.os_version_arm else '11.0'
            sdk_path = adjust_sdk_path(arguments.sdk_path_arm)
            platform = TargetPlatform('arm64', 'aarch64-apple-darwin', os_version, sdk_path, self.prefix_path)
            self._platforms.append(platform)

        assert len(self._platforms) > 0

        # Put native platform first in the list of platforms
        if self._platforms[0].architecture == machine():
            return

        for platform in self._platforms:
            if platform.architecture == machine():
                native_platform = platform
                self._platforms.remove(platform)
                self._platforms.insert(0, native_platform)
                break

    def run(self):
        self._create_prefix_directory()

        base_target = self.target
        base_target.prepare_source(self)

        if base_target.multi_platform and not self.xcode:
            self._build_multiple_platforms(base_target)
        else:
            self._build(base_target)

    def _build(self, target: 'Target'):
        target.configure(self)
        target.build(self)
        target.post_build(self)

    def _build_multiple_platforms(self, base_target: 'Target'):
        assert base_target.multi_platform

        base_build_path = self.build_path
        install_paths = []

        for platform in self._platforms:
            self.platform = platform
            self.build_path = base_build_path + 'build_' + platform.architecture + os.sep

            if platform.architecture == machine():
                self.native_build_path = self.build_path

            target = copy.deepcopy(base_target)
            target.prefix = base_build_path + 'install_' + platform.architecture + os.sep

            self._build(target)

            install_paths.append(target.prefix)

        Builder._merge_install_paths(install_paths, base_target.prefix)

    @staticmethod
    def _compare_files(paths: typing.Sequence[str]) -> bool:
        content = None

        for path in paths:
            if not os.path.exists(path):
                return False

            with open(path, 'rb') as f:
                if content:
                    if content != f.read():
                        return False
                else:
                    content = f.read()

        return True

    @staticmethod
    def _merge_file(src: os.DirEntry, src_sub_paths: typing.Sequence[str], dst_path: str):
        with open(src.path, 'rb') as f:
            header = f.read(8)

        is_executable = header[:4] == b'\xcf\xfa\xed\xfe'
        is_library = header == b'!<arch>\n'

        if is_executable or is_library:
            # Merge executable and library files
            dst_file = dst_path + os.sep + src.name

            args = ['lipo']
            args += src_sub_paths
            args += ['-create', '-output', dst_file]
            subprocess.check_call(args)

            # TODO: check if ad-hoc code signing is really needed
            # See https://github.com/Homebrew/brew/commit/e945b1c42ab44feb1c6814f47cc833d76b1a921c
            # if is_executable:
            #     args = ('codesign', '--sign', '-', dst_file)
            #     subprocess.check_call(args)
        else:
            if not Builder._compare_files(src_sub_paths):
                print(f'WARNING: Source files for {dst_path + os.sep + src.name} don\'t match')
            shutil.copy(src_sub_paths[0], dst_path)

    @staticmethod
    def _merge_missing_files(src_paths: typing.Sequence[str], dst_path: str):
        shifted_src_paths = [path for path in src_paths]
        last_path_index = len(src_paths) - 1

        for _ in range(last_path_index):
            shifted_src_paths.append(shifted_src_paths[0])
            del shifted_src_paths[0]

            if not os.path.exists(shifted_src_paths[0]):
                continue

            Builder._merge_install_paths(shifted_src_paths, dst_path, missing_files_only=True)

    @staticmethod
    def _merge_install_paths(src_paths: typing.Sequence[str], dst_path: str, missing_files_only=False):
        if len(src_paths) <= 1:
            return

        if not missing_files_only:
            if os.path.exists(dst_path):
                shutil.rmtree(dst_path)

        os.makedirs(dst_path, exist_ok=True)

        for src in os.scandir(src_paths[0]):
            src_sub_paths = [path + os.sep + src.name for path in src_paths]

            if src.is_dir():
                Builder._merge_install_paths(src_sub_paths, dst_path + os.sep + src.name, missing_files_only)
            elif src.name.endswith('.la'):
                # Skip libtool files
                continue
            elif missing_files_only:
                for src_sub_path in src_sub_paths[1:]:
                    if not os.path.exists(src_sub_path):
                        shutil.copy(src_sub_paths[0], dst_path)
            else:
                Builder._merge_file(src, src_sub_paths, dst_path)

        if not missing_files_only:
            Builder._merge_missing_files(src_paths, dst_path)

    def architecture(self) -> str:
        return self.platform.architecture if self.platform else ''

    def host(self) -> str:
        return self.platform.host if self.platform else ''

    def os_version(self) -> str:
        return self.platform.os_version if self.platform else ''

    def sdk_path(self) -> str:
        return self.platform.sdk_path if self.platform else ''

    def c_compiler(self) -> str:
        return self.platform.c_compiler if self.platform else ''

    def cxx_compiler(self) -> str:
        return self.platform.cxx_compiler if self.platform else ''

    def _create_prefix_directory(self):
        os.makedirs(self.prefix_path, exist_ok=True)

        cleanup = True

        for dep in os.scandir(self.deps_path):
            if dep.is_dir():
                Builder.symlink_directory(dep.path, self.prefix_path, cleanup)

            # Do symlink cleanup only once
            cleanup = False

    @staticmethod
    def symlink_directory(src_path: str, dst_path: str, cleanup=True):
        src_abspath = os.path.abspath(src_path)
        dst_abspath = os.path.abspath(dst_path)

        if cleanup:
            # Delete obsolete symbolic links
            for root, _, files in os.walk(dst_abspath, followlinks=True):
                for filename in files:
                    file_path = root + os.sep + filename

                    if os.path.islink(file_path) and not os.path.exists(file_path):
                        os.remove(file_path)

        # Create symbolic links if needed
        for entry in os.scandir(src_abspath):
            dst_subpath = entry.path.replace(src_abspath, dst_abspath)
            if entry.is_dir():
                os.makedirs(dst_subpath, exist_ok=True)
                Builder.symlink_directory(entry.path, dst_subpath, cleanup=False)
            elif not os.path.exists(dst_subpath):
                if os.path.islink(entry.path):
                    shutil.copy(entry.path, dst_subpath, follow_symlinks=False)
                else:
                    os.symlink(entry.path, dst_subpath)

    def _detect_target(self):
        for name, target in self.targets.items():
            if target.detect(self):
                self.target = self.targets[name]
                break

        assert self.target

    def _create_targets(self):
        targets = (
            GZDoomTarget(),
            QZDoomTarget(),
            LZDoomTarget(),
            RazeTarget(),
            AccTarget(),
            PrBoomPlusTarget(),
            ChocolateDoomTarget(),
            CrispyDoomTarget(),
            DoomRetroTarget(),
            Doom64EXTarget(),
            DevilutionXTarget(),
            EDuke32Target(),
            NBloodTarget(),
            QuakespasmTarget(),

            # Dependencies
            Bzip2Target(),
            DumbTarget(),
            FfiTarget(),
            FlacTarget(),
            FluidSynthTarget(),
            FreetypeTarget(),
            GlibTarget(),
            GmakeTarget(),
            IconvTarget(),
            InstPatchTarget(),
            IntlTarget(),
            JpegTurboTarget(),
            MadTarget(),
            MesonTarget(),
            MikmodTarget(),
            ModPlugTarget(),
            MoltenVKTarget(),
            Mpg123Target(),
            NasmTarget(),
            NinjaTarget(),
            OggTarget(),
            OpenALTarget(),
            OpusTarget(),
            OpusFileTarget(),
            PcreTarget(),
            PkgConfigTarget(),
            PngTarget(),
            PortMidiTarget(),
            SamplerateTarget(),
            Sdl2Target(),
            Sdl2ImageTarget(),
            Sdl2MixerTarget(),
            Sdl2NetTarget(),
            Sdl2TtfTarget(),
            SndFileTarget(),
            SodiumTarget(),
            VorbisTarget(),
            VpxTarget(),
            WebpTarget(),
            YasmTarget(),
            ZlibTarget(),
            ZMusicTarget(),

            # Special
            CleanAllTarget(),
            CleanDepsTarget()
        )

        self.targets = CaseInsensitiveDict({target.name: target for target in targets})

    def _parse_arguments(self, args: list):
        assert self.targets

        parser = argparse.ArgumentParser(description='*ZDoom binary dependencies for macOS')

        group = parser.add_mutually_exclusive_group(required=True)
        group.add_argument('--target', choices=self.targets.keys(), help='target to build')
        group.add_argument('--source-path', metavar='path', help='path to target\'s source code')

        group = parser.add_argument_group()
        group.add_argument('--xcode', action='store_true', help='generate Xcode project instead of build')
        group.add_argument('--checkout-commit', metavar='commit',
                           help='target\'s source code commit or tag to checkout')
        group.add_argument('--build-path', metavar='path', help='target build path')
        group.add_argument('--output-path', metavar='path', help='output path for main targets')
        group.add_argument('--sdk-path-x64', metavar='path', help='path to macOS SDK for x86_64')
        group.add_argument('--sdk-path-arm', metavar='path', help='path to macOS SDK for ARM64')
        group.add_argument('--os-version-x64', metavar='version', help='macOS deployment version for x86_64')
        group.add_argument('--os-version-arm', metavar='version', help='macOS deployment version for ARM64')
        group.add_argument('--verbose', action='store_true', help='enable verbose build output')
        group.add_argument('--jobs', help='number of parallel compilation jobs')

        group = parser.add_mutually_exclusive_group()
        group.add_argument('--disable-x64', action='store_true', help='disable x86_64 support')
        group.add_argument('--disable-arm', action='store_true', help='disable ARM64 support')

        return parser.parse_args(args)

    def checkout_git(self, url: str):
        if not os.path.exists(self.source_path):
            args = ('git', 'clone', '--recurse-submodules', url, self.source_path)
            subprocess.check_call(args, cwd=self.root_path)

        if self.checkout_commit:
            args = ['git', 'checkout', self.checkout_commit]
            subprocess.check_call(args, cwd=self.source_path)

    def _read_source_package(self, url: str) -> (bytes, str):
        filename = url.rsplit(os.sep, 1)[1]
        filepath = self.source_path + filename

        if os.path.exists(filepath):
            # Read existing source package
            with open(filepath, 'rb') as f:
                data = f.read()
        else:
            # Download package with source code
            print(f'Downloading {filename}')

            response = urllib.request.urlopen(url)

            try:
                with open(filepath, 'wb') as f:
                    data = response.read()
                    f.write(data)

            except IOError:
                os.unlink(filepath)
                raise

        return data, filepath

    @staticmethod
    def _verify_checksum(checksum: str, data: bytes, filepath: str) -> None:
        file_hasher = hashlib.sha256()
        file_hasher.update(data)
        file_checksum = file_hasher.hexdigest()

        if file_checksum != checksum:
            os.unlink(filepath)
            raise Exception(f'Checksum of {filepath} does not match, expected: {checksum}, actual: {file_checksum}')

    def _unpack_source_package(self, filepath: str) -> (str, str):
        filepaths = subprocess.check_output(['tar', '-tf', filepath]).decode("utf-8")
        filepaths = filepaths.split('\n')
        first_path_component = None

        for path in filepaths:
            if os.sep in path:
                first_path_component = path[:path.find(os.sep)]
                break

        if not first_path_component:
            raise Exception("Failed to figure out source code path for " + filepath)

        extract_path = self.source_path + first_path_component + os.sep

        if not os.path.exists(extract_path):
            # Extract source code package
            try:
                subprocess.check_call(['tar', '-xf', filepath], cwd=self.source_path)
            except (IOError, subprocess.CalledProcessError):
                shutil.rmtree(extract_path, ignore_errors=True)
                raise

        return first_path_component, extract_path

    def _apply_source_patch(self, extract_path: str):
        patch_path = self.patch_path + self.target.name + '.patch'

        if not os.path.exists(patch_path):
            return

        # Check if patch is already applied
        test_arg = '--dry-run'
        args = ['patch', test_arg, '--strip=1', '--input=' + patch_path]

        if subprocess.call(args, cwd=extract_path) == 0:
            # Patch wasn't applied yet, do it now
            args.remove(test_arg)
            subprocess.check_call(args, cwd=extract_path)

    def download_source(self, url: str, checksum: str):
        os.makedirs(self.source_path, exist_ok=True)

        data, filepath = self._read_source_package(url)
        Builder._verify_checksum(checksum, data, filepath)

        first_path_component, extract_path = self._unpack_source_package(filepath)
        self._apply_source_patch(extract_path)

        # Adjust source and build paths according to extracted source code
        self.source_path = extract_path
        self.build_path = self.build_path + first_path_component + os.sep

    def run_pkg_config(self, *args) -> str:
        os.makedirs(self.build_path, exist_ok=True)

        args = (self.bin_path + 'pkg-config',) + args
        result = subprocess.check_output(args, cwd=self.build_path)

        return result.decode('utf-8').rstrip('\n')


if __name__ == '__main__':
    Builder(sys.argv[1:]).run()