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 +1,74 @@
+/* Fudge unix isatty and fileno for RISCOS */
+
+#include "unixstuff.h"
+#include <math.h>
+#include <time.h>
+#include "oslib/osfile.h"
+
+int fileno(FILE *f)
+{ return (int)f;
+}
+
+int isatty(int fn)
+{ return (fn==fileno(stdin));
+}
+
+bits unixtime(bits ld,bits ex)
+{ ld&=0xFF;
+  ld-=51;
+  if(ex<1855547904U) ld--;
+  ex-=1855548004U;
+  return ex/100+42949673U*ld-ld/25;
+}
+
+
+/* from RISC OS infozip, preserves filetype in ld */
+int acorntime(bits *ex, bits *ld, time_t utime)
+{
+   unsigned timlo;      /* 3 lower bytes of acorn file-time plus carry byte */
+   unsigned timhi;      /* 2 high bytes of acorn file-time */
+
+   timlo = ((unsigned)utime & 0x00ffffffU) * 100 + 0x00996a00U;
+   timhi = ((unsigned)utime >> 24);
+   timhi = timhi * 100 + 0x0000336eU + (timlo >> 24);
+   if (timhi & 0xffff0000U)
+       return 1;        /* calculation overflow, do not change time */
+
+   /* insert the five time bytes into loadaddr and execaddr variables */
+   *ex = (timlo & 0x00ffffffU) | ((timhi & 0x000000ffU) << 24);
+   *ld = (*ld & 0xffffff00U)   | ((timhi >> 8) & 0x000000ffU);
+
+   return 0;            /* subject to future extension to signal overflow */
+}
+
+
+int isdir(char *fn)
+{ int ob;
+  if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) return 0;
+  switch (ob)
+  {   case osfile_IS_DIR:return 1;
+    case osfile_IS_IMAGE:return 1;
+  }
+  return 0;
+}
+
+int isfile(char *fn)
+{ int ob;
+  if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) return 0;
+  switch (ob)
+  {  case osfile_IS_FILE:return 1;
+    case osfile_IS_IMAGE:return 1;
+  }
+  return 0;
+}
+
+int object_exists(char *fn)
+{ int ob;
+  if(xosfile_read_stamped_no_path(fn,&ob,0,0,0,0,0)) return 0;
+  switch (ob)
+  {  case osfile_IS_FILE:return 1;
+      case osfile_IS_DIR:return 1;
+    case osfile_IS_IMAGE:return 1;
+  }
+  return 0;
+}