https://github.com/python/cpython/commit/ecb3f23b9494c30cdd7c68eb20d7ba01e1a334f4
commit: ecb3f23b9494c30cdd7c68eb20d7ba01e1a334f4
branch: main
author: Hood Chatham <roberthoodchat...@gmail.com>
committer: freakboy3742 <russ...@keith-magee.com>
date: 2025-07-24T06:31:30Z
summary:
gh-136976: Emscripten: Add _decimal and libmpdec (#136997)
Adds tooling to build mpdec (and thus _decimal) as part of an Emscripten build.
files:
M Tools/wasm/emscripten/__main__.py
diff --git a/Tools/wasm/emscripten/__main__.py
b/Tools/wasm/emscripten/__main__.py
index b25cbb01dedd31..202dd298199b56 100644
--- a/Tools/wasm/emscripten/__main__.py
+++ b/Tools/wasm/emscripten/__main__.py
@@ -8,6 +8,7 @@
import subprocess
import sys
import sysconfig
+import hashlib
import tempfile
from urllib.request import urlopen
from pathlib import Path
@@ -164,20 +165,60 @@ def make_build_python(context, working_dir):
print(f"🎉 {binary} {version}")
-@subdir(HOST_BUILD_DIR, clean_ok=True)
-def make_emscripten_libffi(context, working_dir):
- shutil.rmtree(working_dir / "libffi-3.4.6", ignore_errors=True)
+def check_shasum(file: str, expected_shasum: str):
+ with open(file, "rb") as f:
+ digest = hashlib.file_digest(f, "sha256")
+ if digest.hexdigest() != expected_shasum:
+ raise RuntimeError(f"Unexpected shasum for {file}")
+
+
+def download_and_unpack(working_dir: Path, url: str, expected_shasum: str):
with tempfile.NamedTemporaryFile(suffix=".tar.gz", delete_on_close=False)
as tmp_file:
- with urlopen(
-
"https://github.com/libffi/libffi/releases/download/v3.4.6/libffi-3.4.6.tar.gz";
- ) as response:
+ with urlopen(url) as response:
shutil.copyfileobj(response, tmp_file)
tmp_file.close()
+ check_shasum(tmp_file.name, expected_shasum)
shutil.unpack_archive(tmp_file.name, working_dir)
+
+
+@subdir(HOST_BUILD_DIR, clean_ok=True)
+def make_emscripten_libffi(context, working_dir):
+ ver = "3.4.6"
+ libffi_dir = working_dir / f"libffi-{ver}"
+ shutil.rmtree(libffi_dir, ignore_errors=True)
+ download_and_unpack(working_dir,
f"https://github.com/libffi/libffi/releases/download/v{ver}/libffi-{ver}.tar.gz";,
"b0dea9df23c863a7a50e825440f3ebffabd65df1497108e5d437747843895a4e")
call(
[EMSCRIPTEN_DIR / "make_libffi.sh"],
env=updated_env({"PREFIX": PREFIX_DIR}),
- cwd=working_dir / "libffi-3.4.6",
+ cwd=libffi_dir,
+ quiet=context.quiet,
+ )
+
+
+@subdir(HOST_BUILD_DIR, clean_ok=True)
+def make_mpdec(context, working_dir):
+ ver = "4.0.1"
+ mpdec_dir = working_dir / f"mpdecimal-{ver}"
+ shutil.rmtree(mpdec_dir, ignore_errors=True)
+ download_and_unpack(working_dir,
f"https://www.bytereef.org/software/mpdecimal/releases/mpdecimal-{ver}.tar.gz";,
"96d33abb4bb0070c7be0fed4246cd38416188325f820468214471938545b1ac8")
+ call(
+ [
+ "emconfigure",
+ mpdec_dir / "configure",
+ "CFLAGS=-fPIC",
+ "--prefix",
+ PREFIX_DIR,
+ "--disable-shared",
+ ],
+ cwd=mpdec_dir,
+ quiet=context.quiet,
+ )
+ call(
+ [
+ "make",
+ "install"
+ ],
+ cwd=mpdec_dir,
quiet=context.quiet,
)
@@ -315,6 +356,7 @@ def build_all(context):
configure_build_python,
make_build_python,
make_emscripten_libffi,
+ make_mpdec,
configure_emscripten_python,
make_emscripten_python,
]
@@ -343,6 +385,9 @@ def main():
configure_build = subcommands.add_parser(
"configure-build-python", help="Run `configure` for the " "build
Python"
)
+ make_mpdec_cmd = subcommands.add_parser(
+ "make-mpdec", help="Clone mpdec repo, configure and build it for
emscripten"
+ )
make_libffi_cmd = subcommands.add_parser(
"make-libffi", help="Clone libffi repo, configure and build it for
emscripten"
)
@@ -363,6 +408,7 @@ def main():
build,
configure_build,
make_libffi_cmd,
+ make_mpdec_cmd,
make_build,
configure_host,
make_host,
@@ -400,6 +446,7 @@ def main():
dispatch = {
"make-libffi": make_emscripten_libffi,
+ "make-mpdec": make_mpdec,
"configure-build-python": configure_build_python,
"make-build-python": make_build_python,
"configure-host": configure_emscripten_python,
_______________________________________________
Python-checkins mailing list -- python-checkins@python.org
To unsubscribe send an email to python-checkins-le...@python.org
https://mail.python.org/mailman3//lists/python-checkins.python.org
Member address: arch...@mail-archive.com
