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toolchain_builder.py
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toolchain_builder.py
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import platform
import subprocess
import shutil
import os
import contextlib
import urllib.request
from .package_manager import install_dependencies, Brew
from .toolchain_dependencies import get_dependencies_for_toolchain
class ToolchainParams:
def __init__(
self, type: str, target_arch: str, target_platform: str,
root_dir: str, tune_for_native: bool, skip_dependencies: bool,
sources_dir: str, keep_sources: bool, keep_build: bool
):
self.type = type
self.target_arch = target_arch
self.target_platform = target_platform
self.root_dir = root_dir
self.tune_for_native = tune_for_native
self.skip_dependencies = skip_dependencies
self.sources_dir = sources_dir
self.keep_sources = keep_sources
self.keep_build = keep_build
GCC_VERSION = "13.2.0"
BINUTILS_VERSION = "2.41"
SUPPORTED_SYSTEMS = ["Linux", "Darwin"]
def is_supported_system() -> bool:
this_platform = platform.system()
ret = this_platform in SUPPORTED_SYSTEMS
if not ret:
print(f"Unsupported system '{this_platform}'")
return ret
def _ensure_dependencies(params: ToolchainParams) -> None:
if params.skip_dependencies:
return
deps = get_dependencies_for_toolchain(params.type)
install_dependencies(deps)
def _clone_mingw_w64(target_dir: str) -> None:
if os.path.exists(target_dir):
print("mingw-w64 already cloned, skipping")
return
print("Downloading mingw-w64...")
subprocess.run(["git", "clone", "https://github.com/mingw-w64/mingw-w64",
target_dir], check=True)
def _install_mingw_headers(
source_dir: str, platform_dir: str, target_dir: str, env: dict
) -> None:
mingw_headers_dir = os.path.join(target_dir, "mingw_headers")
os.makedirs(mingw_headers_dir, exist_ok=True)
configure_path = os.path.join(source_dir, "mingw-w64-headers", "configure")
print("Installing mingw headers...")
subprocess.run([configure_path, f"--prefix={platform_dir}"],
check=True, cwd=mingw_headers_dir, env=env)
subprocess.run(["make", "install"], cwd=mingw_headers_dir,
check=True, env=env)
shutil.rmtree(mingw_headers_dir)
def _install_mingw_libs(
source_dir: str, target: str, platform_dir: str,
target_dir: str, env: dict
) -> None:
mingw_crt_dir = os.path.join(target_dir, "mingw_crt")
os.makedirs(mingw_crt_dir, exist_ok=True)
configure_path = os.path.join(source_dir, "mingw-w64-crt", "configure")
print("Compiling mingw crt...")
subprocess.run([configure_path,
f"--prefix={platform_dir}",
f"--host={target}",
f"--with-sysroot={platform_dir}",
"--enable-lib64", "--disable-lib32"],
cwd=mingw_crt_dir, check=True, env=env)
subprocess.run(["make", "-j{}".format(os.cpu_count())], cwd=mingw_crt_dir,
check=True, env=env)
subprocess.run(["make", "install"], cwd=mingw_crt_dir, check=True, env=env)
shutil.rmtree(mingw_crt_dir)
def _build_binutils(
binutils_sources: str, binutils_target_dir: str, target: str,
platform_root: str, env: dict
) -> None:
configure_full_path = os.path.join(binutils_sources, "configure")
print("Building binutils...")
subprocess.run([configure_full_path,
f"--target={target}",
f"--prefix={platform_root}",
"--with-sysroot"
"--disable-nls",
"--disable-multilib",
"--disable-werror"],
cwd=binutils_target_dir, env=env, check=True)
subprocess.run(["make", "-j{}".format(os.cpu_count())], env=env,
cwd=binutils_target_dir, check=True)
subprocess.run(["make", "install"], cwd=binutils_target_dir, check=True)
def _is_gcc_toolchain_built(tc_root: str, prefix: str) -> bool:
full_path = os.path.join(tc_root, "bin", f"{prefix}-")
# TODO: a more "reliable" check?
return (os.path.isfile(full_path + "gcc") and
os.path.isfile(full_path + "ld"))
def _get_gcc_prefix(params: ToolchainParams) -> str:
arch_to_prefix = {
"x86_64": "x86_64-{platform}",
"i686": "i686-{platform}",
"arm": "arm-{platform}",
"aarch32": "arm-{platform}",
"aarch64": "aarch64-{platform}",
}
prefix_template = arch_to_prefix[params.target_arch]
return prefix_template.format(platform=params.target_platform)
def _download_and_extract(
url: str, target_file: str, target_dir: str, platform: str
) -> bool:
if os.path.exists(target_dir):
print(f"{target_dir} already exists")
return False
if not os.path.exists(target_file):
print(f"Downloading {url}...")
urllib.request.urlretrieve(url, target_file)
else:
print(f"{target_file} already exists, not downloading")
os.mkdir(target_dir)
command = ["tar", "-xf", target_file, "-C", target_dir,
"--strip-components", "1"]
if platform != "Darwin":
command.append("--checkpoint=.250")
print(f"Unpacking {target_file}...")
subprocess.run(command, check=True)
# line feed after tar printing '....' for progress
print("")
return True
def _download_gcc_toolchain_sources(
platform: str, workdir: str, gcc_target_dir: str,
binutils_target_dir: str
) -> None:
gcc_url = f"ftp://ftp.gnu.org/gnu/gcc/gcc-{GCC_VERSION}/"
gcc_url += f"gcc-{GCC_VERSION}.tar.gz"
binutils_url = "https://ftp.gnu.org/gnu/binutils/"
binutils_url += f"binutils-{BINUTILS_VERSION}.tar.gz"
full_gcc_tarball_path = os.path.join(workdir, "gcc.tar.gz")
full_binutils_tarball_path = os.path.join(workdir, "binutils.tar.gz")
_download_and_extract(gcc_url, full_gcc_tarball_path,
gcc_target_dir, platform)
with contextlib.suppress(FileNotFoundError):
os.remove(full_gcc_tarball_path)
_download_and_extract(binutils_url, full_binutils_tarball_path,
binutils_target_dir, platform)
with contextlib.suppress(FileNotFoundError):
os.remove(full_binutils_tarball_path)
def _build_gcc(
gcc_sources: str, gcc_target_dir: str, this_platform: str,
target_platform: str, platform_root: str, env: dict
) -> None:
configure_full_path = os.path.join(gcc_sources, "configure")
configure_command = [configure_full_path,
f"--target={target_platform}",
f"--prefix={platform_root}",
"--disable-nls",
"--enable-languages=c,c++",
"--disable-multilib"]
if this_platform == "Darwin":
configure_command.extend([
f"--with-gmp={Brew.prefix('gmp')}",
f"--with-mpc={Brew.prefix('libmpc')}",
f"--with-mpfr={Brew.prefix('mpfr')}"
])
print("Building GCC...")
subprocess.run(configure_command, cwd=gcc_target_dir, env=env, check=True)
subprocess.run(["make", "all-gcc", "-j{}".format(os.cpu_count())],
cwd=gcc_target_dir, env=env, check=True)
subprocess.run(["make", "install-gcc"], cwd=gcc_target_dir,
env=env, check=True)
def _build_libgcc(gcc_dir: str) -> None:
subprocess.run(["make", "all-target-libgcc",
"-j{}".format(os.cpu_count())],
cwd=gcc_dir, check=True)
subprocess.run(["make", "install-target-libgcc"], cwd=gcc_dir, check=True)
def _build_gcc_toolchain(
params: ToolchainParams, gcc_sources: str,
binutils_sources: str, this_platform: str
) -> None:
compiler_prefix = _get_gcc_prefix(params)
binutils_build_dir = os.path.join(params.root_dir,
f"binutils-{params.target_arch}-build")
gcc_build_dir = os.path.join(params.root_dir,
f"gcc-{params.target_arch}-build")
is_mingw = "mingw" in params.target_platform
if is_mingw:
mingw_w64_dir = os.path.join(params.root_dir, "mingw-w64")
mingw_target_dir = os.path.join(params.root_dir, compiler_prefix)
os.makedirs(mingw_target_dir, exist_ok=True)
_clone_mingw_w64(mingw_w64_dir)
env = os.environ.copy()
cflags = ["-g", "-O2"]
if params.tune_for_native:
# -march=native doesn't work on MacOS clang for some reason
if this_platform == "Darwin":
cflags.append("-mtune=native")
else:
cflags.append("-march=native")
env["CFLAGS"] = env.get("CFLAGS", "") + " ".join(cflags)
env["CXXFLAGS"] = env.get("CXXFLAGS", "") + " ".join(cflags)
bin_dir = os.path.join(params.root_dir, "bin")
env["PATH"] = bin_dir + ":" + env.get("PATH", "")
print(f"Building the GCC toolchain for {params.target_arch} "
f"({compiler_prefix})...")
os.makedirs(binutils_build_dir, exist_ok=True)
_build_binutils(binutils_sources, binutils_build_dir, compiler_prefix,
params.root_dir, env)
if is_mingw:
_install_mingw_headers(mingw_w64_dir, mingw_target_dir,
params.root_dir, env)
os.makedirs(gcc_build_dir, exist_ok=True)
_build_gcc(gcc_sources, gcc_build_dir, this_platform, compiler_prefix,
params.root_dir, env)
if is_mingw:
_install_mingw_libs(mingw_w64_dir, compiler_prefix, mingw_target_dir,
params.root_dir, env)
_build_libgcc(gcc_build_dir)
print(f"Toolchain for {params.target_arch} built succesfully!")
if not params.keep_sources and is_mingw:
shutil.rmtree(mingw_w64_dir)
if not params.keep_build:
print("Removing build directories...")
shutil.rmtree(binutils_build_dir)
shutil.rmtree(gcc_build_dir)
def _ensure_gcc_toolchain(params: ToolchainParams) -> None:
if _is_gcc_toolchain_built(params.root_dir, _get_gcc_prefix(params)):
print(f"Toolchain for {params.target_arch} is already built")
return
os.makedirs(params.root_dir, exist_ok=True)
_ensure_dependencies(params)
gcc_dir = "gcc_sources"
binutils_dir = "binutils_sources"
gcc_dir_full_path = os.path.join(params.sources_dir, gcc_dir)
binutils_dir_full_path = os.path.join(params.sources_dir, binutils_dir)
native_platform = platform.system()
_download_gcc_toolchain_sources(native_platform, params.sources_dir,
gcc_dir_full_path, binutils_dir_full_path)
os.makedirs(params.root_dir, exist_ok=True)
_build_gcc_toolchain(params, gcc_dir_full_path, binutils_dir_full_path,
native_platform)
if not params.keep_sources:
print("Removing source directories...")
shutil.rmtree(gcc_dir_full_path)
shutil.rmtree(binutils_dir_full_path)
print("Successfully built GCC toolchain!")
def _ensure_clang_toolchain(params: ToolchainParams) -> None:
_ensure_dependencies(params)
def build_toolchain(params: ToolchainParams) -> None:
if params.type == "gcc":
_ensure_gcc_toolchain(params)
else:
_ensure_clang_toolchain(params)