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 +1,178 @@
+
+/* Check for interrupts */
+
+#include "Python.h"
+#include "pythread.h"
+
+#ifdef QUICKWIN
+
+#include <io.h>
+
+void
+PyOS_InitInterrupts(void)
+{
+}
+
+void
+PyOS_FiniInterrupts(void)
+{
+}
+
+int
+PyOS_InterruptOccurred(void)
+{
+    _wyield();
+}
+
+#define OK
+
+#endif /* QUICKWIN */
+
+#if defined(_M_IX86) && !defined(__QNX__)
+#include <io.h>
+#endif
+
+#if defined(MSDOS) && !defined(QUICKWIN)
+
+#ifdef __GNUC__
+
+/* This is for DJGPP's GO32 extender.  I don't know how to trap
+ * control-C  (There's no API for ctrl-C, and I don't want to mess with
+ * the interrupt vectors.)  However, this DOES catch control-break.
+ * --Amrit
+ */
+
+#include <go32.h>
+
+void
+PyOS_InitInterrupts(void)
+{
+    _go32_want_ctrl_break(1 /* TRUE */);
+}
+
+void
+PyOS_FiniInterrupts(void)
+{
+}
+
+int
+PyOS_InterruptOccurred(void)
+{
+    return _go32_was_ctrl_break_hit();
+}
+
+#else /* !__GNUC__ */
+
+/* This might work for MS-DOS (untested though): */
+
+void
+PyOS_InitInterrupts(void)
+{
+}
+
+void
+PyOS_FiniInterrupts(void)
+{
+}
+
+int
+PyOS_InterruptOccurred(void)
+{
+    int interrupted = 0;
+    while (kbhit()) {
+        if (getch() == '\003')
+            interrupted = 1;
+    }
+    return interrupted;
+}
+
+#endif /* __GNUC__ */
+
+#define OK
+
+#endif /* MSDOS && !QUICKWIN */
+
+
+#ifndef OK
+
+/* Default version -- for real operating systems and for Standard C */
+
+#include <stdio.h>
+#include <string.h>
+#include <signal.h>
+
+static int interrupted;
+
+void
+PyErr_SetInterrupt(void)
+{
+    interrupted = 1;
+}
+
+extern int PyErr_CheckSignals(void);
+
+static int
+checksignals_witharg(void * arg)
+{
+    return PyErr_CheckSignals();
+}
+
+static void
+intcatcher(int sig)
+{
+    extern void Py_Exit(int);
+    static char message[] =
+"python: to interrupt a truly hanging Python program, interrupt once more.\n";
+    switch (interrupted++) {
+    case 0:
+        break;
+    case 1:
+#ifdef RISCOS
+        fprintf(stderr, message);
+#else
+        write(2, message, strlen(message));
+#endif
+        break;
+    case 2:
+        interrupted = 0;
+        Py_Exit(1);
+        break;
+    }
+    PyOS_setsig(SIGINT, intcatcher);
+    Py_AddPendingCall(checksignals_witharg, NULL);
+}
+
+static void (*old_siginthandler)(int) = SIG_DFL;
+
+void
+PyOS_InitInterrupts(void)
+{
+    if ((old_siginthandler = PyOS_setsig(SIGINT, SIG_IGN)) != SIG_IGN)
+        PyOS_setsig(SIGINT, intcatcher);
+}
+
+void
+PyOS_FiniInterrupts(void)
+{
+    PyOS_setsig(SIGINT, old_siginthandler);
+}
+
+int
+PyOS_InterruptOccurred(void)
+{
+    if (!interrupted)
+        return 0;
+    interrupted = 0;
+    return 1;
+}
+
+#endif /* !OK */
+
+void
+PyOS_AfterFork(void)
+{
+#ifdef WITH_THREAD
+    PyThread_ReInitTLS();
+    PyEval_ReInitThreads();
+#endif
+}