port 2P step 1: vendor CPython 2.7.18 as the mtpython static library

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>
2026-09-23 08:27:35 +09:00
parent a9b31dec67
commit 5fad769ee8
1018 changed files with 652582 additions and 19 deletions
@@ -0,0 +1,211 @@
+# mtpython — CPython 2.7.18 as a static library for the embedded 40250 script layer
+# (docs/PORT-PLAN.md 批次 2P step 1). Upstream source is the official Python-2.7.18 tarball
+# (sha256 b62c0e79...def43), trimmed of Doc/Demo/Tools/Mac/PCbuild and the stdlib test trees;
+# see docs/THIRD-PARTY.md for the two vendor patches.
+#
+# The source list and the built-in module table (config/config.c, config/Setup.static) are SHARED
+# by every platform: they are exactly the objects the reference autotools build puts in
+# libpython2.7.a. `pyconfig.h` is NOT shared — it is the result of probing one platform's type
+# sizes and system calls, so each platform keeps its own under config/<platform>/.
+#
+# Windows is not built here yet: it needs PC/pyconfig.h, PC/getpathp.c, Python/dynload_win.c and a
+# PC built-in table of its own (nt instead of posix, no fcntl/pwd). Upstream 2.7 supports MSVC there,
+# while our Windows gate cross-compiles with MinGW, where PC/pyconfig.h's gnu-win32 branch leaves
+# HAVE_UNISTD_H unset and posixmodule.c/dynload_win.c collide with the MinGW headers — so it needs a
+# patch series, decided in PORT-PLAN 批次 2P step 4. See docs/THIRD-PARTY.md.
+
+set(MT_PYTHON_SRC_DIR "${CMAKE_CURRENT_SOURCE_DIR}")
+
+# MT_PYTHON_PLATFORM is the reference build's MACHDEP, which becomes sys.platform.
+if(ANDROID)
+    set(MT_PYTHON_CONFIG android)
+    set(MT_PYTHON_PLATFORM linux2)
+elseif(IOS OR CMAKE_SYSTEM_NAME STREQUAL "iOS")
+    set(MT_PYTHON_CONFIG ios)
+    set(MT_PYTHON_PLATFORM darwin)
+elseif(APPLE)
+    set(MT_PYTHON_CONFIG macos)
+    set(MT_PYTHON_PLATFORM darwin)
+elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    set(MT_PYTHON_CONFIG linux)
+    set(MT_PYTHON_PLATFORM linux2)
+else()
+    message(FATAL_ERROR "mtpython: no pyconfig.h for ${CMAKE_SYSTEM_NAME} yet (see the header of this file)")
+endif()
+if(NOT EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/config/${MT_PYTHON_CONFIG}/pyconfig.h")
+    message(FATAL_ERROR "mtpython: config/${MT_PYTHON_CONFIG}/pyconfig.h is missing; generate it with "
+                        "tools/py_embed/gen_pyconfig.sh ${MT_PYTHON_CONFIG}")
+endif()
+
+add_library(mtpython STATIC
+    config/config.c
+    Modules/_bisectmodule.c
+    Modules/_codecsmodule.c
+    Modules/_collectionsmodule.c
+    Modules/_functoolsmodule.c
+    Modules/_heapqmodule.c
+    Modules/_localemodule.c
+    Modules/_math.c
+    Modules/_randommodule.c
+    Modules/_sre.c
+    Modules/_struct.c
+    Modules/_weakref.c
+    Modules/arraymodule.c
+    Modules/binascii.c
+    Modules/cPickle.c
+    Modules/cStringIO.c
+    Modules/datetimemodule.c
+    Modules/errnomodule.c
+    Modules/fcntlmodule.c
+    Modules/gcmodule.c
+    Modules/getbuildinfo.c
+    Modules/getpath.c
+    Modules/itertoolsmodule.c
+    Modules/main.c
+    Modules/mathmodule.c
+    Modules/operator.c
+    Modules/posixmodule.c
+    Modules/pwdmodule.c
+    Modules/selectmodule.c
+    Modules/signalmodule.c
+    Modules/stropmodule.c
+    Modules/symtablemodule.c
+    Modules/threadmodule.c
+    Modules/timemodule.c
+    Modules/xxsubtype.c
+    Modules/zipimport.c
+    Objects/abstract.c
+    Objects/boolobject.c
+    Objects/bufferobject.c
+    Objects/bytearrayobject.c
+    Objects/bytes_methods.c
+    Objects/capsule.c
+    Objects/cellobject.c
+    Objects/classobject.c
+    Objects/cobject.c
+    Objects/codeobject.c
+    Objects/complexobject.c
+    Objects/descrobject.c
+    Objects/dictobject.c
+    Objects/enumobject.c
+    Objects/exceptions.c
+    Objects/fileobject.c
+    Objects/floatobject.c
+    Objects/frameobject.c
+    Objects/funcobject.c
+    Objects/genobject.c
+    Objects/intobject.c
+    Objects/iterobject.c
+    Objects/listobject.c
+    Objects/longobject.c
+    Objects/memoryobject.c
+    Objects/methodobject.c
+    Objects/moduleobject.c
+    Objects/object.c
+    Objects/obmalloc.c
+    Objects/rangeobject.c
+    Objects/setobject.c
+    Objects/sliceobject.c
+    Objects/stringobject.c
+    Objects/structseq.c
+    Objects/tupleobject.c
+    Objects/typeobject.c
+    Objects/unicodectype.c
+    Objects/unicodeobject.c
+    Objects/weakrefobject.c
+    Parser/acceler.c
+    Parser/bitset.c
+    Parser/firstsets.c
+    Parser/grammar.c
+    Parser/grammar1.c
+    Parser/listnode.c
+    Parser/metagrammar.c
+    Parser/myreadline.c
+    Parser/node.c
+    Parser/parser.c
+    Parser/parsetok.c
+    Parser/pgen.c
+    Parser/tokenizer.c
+    Python/Python-ast.c
+    Python/_warnings.c
+    Python/asdl.c
+    Python/ast.c
+    Python/bltinmodule.c
+    Python/ceval.c
+    Python/codecs.c
+    Python/compile.c
+    Python/dtoa.c
+    Python/dynload_shlib.c
+    Python/errors.c
+    Python/formatter_string.c
+    Python/formatter_unicode.c
+    Python/frozen.c
+    Python/frozenmain.c
+    Python/future.c
+    Python/getargs.c
+    Python/getcompiler.c
+    Python/getcopyright.c
+    Python/getopt.c
+    Python/getplatform.c
+    Python/getversion.c
+    Python/graminit.c
+    Python/import.c
+    Python/importdl.c
+    Python/marshal.c
+    Python/modsupport.c
+    Python/mysnprintf.c
+    Python/mystrtoul.c
+    Python/peephole.c
+    Python/pyarena.c
+    Python/pyctype.c
+    Python/pyfpe.c
+    Python/pymath.c
+    Python/pystate.c
+    Python/pystrcmp.c
+    Python/pystrtod.c
+    Python/pythonrun.c
+    Python/random.c
+    Python/structmember.c
+    Python/symtable.c
+    Python/sysmodule.c
+    Python/thread.c
+    Python/traceback.c
+)
+
+# Python/mactoolboxglue.c is compiled only where pyconfig.h sets USE_TOOLBOX_OBJECT_GLUE (macOS).
+if(MT_PYTHON_CONFIG STREQUAL macos)
+    target_sources(mtpython PRIVATE Python/mactoolboxglue.c)
+endif()
+
+target_include_directories(mtpython PUBLIC
+    "${CMAKE_CURRENT_SOURCE_DIR}/config/${MT_PYTHON_CONFIG}"
+    "${CMAKE_CURRENT_SOURCE_DIR}/Include"
+)
+target_include_directories(mtpython PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}/Modules")
+
+# The reference Makefile's PY_CFLAGS, plus the per-file defines it passes to getpath.c and
+# getplatform.c. The interpreter runs with Py_IgnoreEnvironmentFlag/Py_NoSiteFlag and gets its
+# sys.path from the host, so PREFIX/PYTHONPATH only feed getpath.c's unused defaults.
+target_compile_definitions(mtpython PRIVATE
+    Py_BUILD_CORE
+    NDEBUG
+    PREFIX="/usr/local"
+    EXEC_PREFIX="/usr/local"
+    VERSION="2.7"
+    VPATH=""
+    PYTHONPATH=""
+    PLATFORM="${MT_PYTHON_PLATFORM}"
+)
+target_compile_options(mtpython PRIVATE -fno-strict-aliasing -fwrapv -w)
+# The 2.7 headers still use `register`, which C++17 removed; every C++ consumer needs this (MSVC: /wd5033).
+target_compile_options(mtpython INTERFACE $<$<COMPILE_LANGUAGE:CXX>:-Wno-register>)
+set_target_properties(mtpython PROPERTIES C_STANDARD 99 POSITION_INDEPENDENT_CODE ON)
+if(NOT ANDROID AND NOT IOS AND NOT CMAKE_SYSTEM_NAME STREQUAL "iOS")
+    find_library(MT_PYTHON_DL dl)
+    if(MT_PYTHON_DL)
+        target_link_libraries(mtpython PUBLIC ${MT_PYTHON_DL})
+    endif()
+endif()
+find_package(Threads REQUIRED)
+target_link_libraries(mtpython PUBLIC Threads::Threads m)
+add_library(mt3p::python ALIAS mtpython)