step 3a — 标准库:
tools/py_embed/make_stdlib_zip.py packs the vendored Lib/ into
<build>/python27.zip (397 modules, 6876547 bytes, ZIP_STORED — the zlib
module is trimmed out of our CPython, so zipimport cannot inflate).
The mtpython_stdlib target builds it; py_embed_test and the launcher test
both run against it.
platform/ScriptLib/PythonHost sets the embedding flags before
Py_Initialize and, after it, puts the zip on sys.path and re-registers
encodings.search_function with codecs — 2.7 builds the codec registry
once, at startup, so replacing sys.path afterwards needs it back.
step 3b — pack 模块:
UserInterface/PythonPackModule.cpp copied verbatim; packExist/packGet/
initpack read root/ and uiscript/ through CEterPackManager, i.e. through
asset_io. The CHINA_CRYPT_KEY block in that unit is CAccountConnector's
and is kept #if 0 until the login slice (2V1). UserInterface/StdAfx.h is
a documented partial mirror — the original is the whole client's PCH.
The launcher test now runs initpack() as RunMainScript does (its first
line), reads system.py / uiscript / locale text back out of the packs, and
confirms cp1252 decoding works off the zip. system.py still stops at
"No module named app" — the C++ modules are the 2V0 slice.
gates: port_map.py check 0 errors · key leak check 8/8 none · macOS ctest
27/27 · android + ios port_platform compile clean.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
The embedded 40250 script layer needs its own interpreter on five platforms.
2.7 is end-of-life, so nothing can be fetched from the target SDKs and the
source is vendored (official 2.7.18 tarball, trimmed to 25MB; Lib/ stays for
step 3's python27.zip).
cpython-2.7.18/CMakeLists.txt builds one `mtpython` static library from exactly
the 133 objects the reference libpython2.7.a contains, off by default behind
-DMTGODOT_EMBED_PYTHON=ON. The source list and the built-in module table
(config/config.c, 39 entries) are shared; pyconfig.h is a probe result and is
not, so each platform keeps its own under config/<platform>/, regenerated by
tools/py_embed/gen_pyconfig.sh and checked against the shared table.
Three vendor patches, documented in docs/THIRD-PARTY.md: configure/configure.ac
learn arm64 on macOS, and posixmodule.c undefines the process-control calls it
hard-defines past pyconfig.h when building for iOS.
macOS (ctest python.embed: every builtin imports, codecs and pickle work off the
vendored Lib/), Android arm64 and iOS arm64 build. Linux needs a Linux host and
Windows needs a MinGW-vs-MSVC decision; both are noted for step 4.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
