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 +1,136 @@
+
+/* This code implemented by Mark Hammond (MHammond@skippinet.com.au) */
+
+#include <windows.h>
+#include <limits.h>
+#include <pydebug.h>
+
+long PyThread_get_thread_ident(void);
+
+/*
+ * Change all headers to pure ANSI as no one will use K&R style on an
+ * NT
+ */
+
+/*
+ * Initialization of the C package, should not be needed.
+ */
+static void PyThread__init_thread(void)
+{
+}
+
+/*
+ * Thread support.
+ */
+long PyThread_start_new_thread(void (*func)(void *), void *arg)
+{
+    long rv;
+    int success = -1;
+
+    dprintf(("%ld: PyThread_start_new_thread called\n", PyThread_get_thread_ident()));
+    if (!initialized)
+        PyThread_init_thread();
+
+    rv = _beginthread(func, 0, arg); /* use default stack size */
+
+    if (rv != -1) {
+        success = 0;
+        dprintf(("%ld: PyThread_start_new_thread succeeded:\n", PyThread_get_thread_ident()));
+    }
+
+    return success;
+}
+
+/*
+ * Return the thread Id instead of a handle. The Id is said to uniquely identify the
+ * thread in the system
+ */
+long PyThread_get_thread_ident(void)
+{
+    if (!initialized)
+        PyThread_init_thread();
+
+    return GetCurrentThreadId();
+}
+
+void PyThread_exit_thread(void)
+{
+    dprintf(("%ld: PyThread_exit_thread called\n", PyThread_get_thread_ident()));
+    if (!initialized)
+        exit(0);
+    _endthread();
+}
+
+/*
+ * Lock support. It has to be implemented using Mutexes, as
+ * CE doesnt support semaphores.  Therefore we use some hacks to
+ * simulate the non reentrant requirements of Python locks
+ */
+PyThread_type_lock PyThread_allocate_lock(void)
+{
+    HANDLE aLock;
+
+    dprintf(("PyThread_allocate_lock called\n"));
+    if (!initialized)
+        PyThread_init_thread();
+
+    aLock = CreateEvent(NULL,           /* Security attributes      */
+                        0,              /* Manual-Reset               */
+                        1,              /* Is initially signalled  */
+                        NULL);          /* Name of event            */
+
+    dprintf(("%ld: PyThread_allocate_lock() -> %p\n", PyThread_get_thread_ident(), aLock));
+
+    return (PyThread_type_lock) aLock;
+}
+
+void PyThread_free_lock(PyThread_type_lock aLock)
+{
+    dprintf(("%ld: PyThread_free_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
+
+    CloseHandle(aLock);
+}
+
+/*
+ * Return 1 on success if the lock was acquired
+ *
+ * and 0 if the lock was not acquired. This means a 0 is returned
+ * if the lock has already been acquired by this thread!
+ */
+int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag)
+{
+    int success = 1;
+    DWORD waitResult;
+
+    dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),aLock, waitflag));
+
+#ifndef DEBUG
+    waitResult = WaitForSingleObject(aLock, (waitflag ? INFINITE : 0));
+#else
+    /* To aid in debugging, we regularly wake up.  This allows us to
+    break into the debugger */
+    while (TRUE) {
+        waitResult = WaitForSingleObject(aLock, waitflag ? 3000 : 0);
+        if (waitflag==0 || (waitflag && waitResult == WAIT_OBJECT_0))
+            break;
+    }
+#endif
+
+    if (waitResult != WAIT_OBJECT_0) {
+        success = 0;    /* We failed */
+    }
+
+    dprintf(("%ld: PyThread_acquire_lock(%p, %d) -> %d\n", PyThread_get_thread_ident(),aLock, waitflag, success));
+
+    return success;
+}
+
+void PyThread_release_lock(PyThread_type_lock aLock)
+{
+    dprintf(("%ld: PyThread_release_lock(%p) called\n", PyThread_get_thread_ident(),aLock));
+
+    if (!SetEvent(aLock))
+        dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", PyThread_get_thread_ident(), aLock, GetLastError()));
+}
+
+