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 @@
+/*---------------------------------------------------------------------------*
+ * <RCS keywords>
+ *
+ * C++ Library
+ *
+ * Copyright 1992-1994, David Gottner
+ *
+ *                    All Rights Reserved
+ *
+ * Permission to use, copy, modify, and distribute this software and its
+ * documentation for any purpose and without fee is hereby granted,
+ * provided that the above copyright notice, this permission notice and
+ * the following disclaimer notice appear unmodified in all copies.
+ *
+ * I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.  IN NO EVENT SHALL I
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+ * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER
+ * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+ * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Nevertheless, I would like to know about bugs in this library or
+ * suggestions for improvment.  Send bug reports and feedback to
+ * davegottner@delphi.com.
+ *---------------------------------------------------------------------------*/
+
+/* Modified to support --help and --version, as well as /? on Windows
+ * by Georg Brandl. */
+
+#include <stdio.h>
+#include <string.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int _PyOS_opterr = 1;          /* generate error messages */
+int _PyOS_optind = 1;          /* index into argv array   */
+char *_PyOS_optarg = NULL;     /* optional argument       */
+static char *opt_ptr = "";
+
+void _PyOS_ResetGetOpt(void)
+{
+    _PyOS_opterr = 1;
+    _PyOS_optind = 1;
+    _PyOS_optarg = NULL;
+    opt_ptr = "";
+}
+
+int _PyOS_GetOpt(int argc, char **argv, char *optstring)
+{
+    char *ptr;
+    int option;
+
+    if (*opt_ptr == '\0') {
+
+        if (_PyOS_optind >= argc)
+            return -1;
+#ifdef MS_WINDOWS
+        else if (strcmp(argv[_PyOS_optind], "/?") == 0) {
+            ++_PyOS_optind;
+            return 'h';
+        }
+#endif
+
+        else if (argv[_PyOS_optind][0] != '-' ||
+                 argv[_PyOS_optind][1] == '\0' /* lone dash */ )
+            return -1;
+
+        else if (strcmp(argv[_PyOS_optind], "--") == 0) {
+            ++_PyOS_optind;
+            return -1;
+        }
+
+        else if (strcmp(argv[_PyOS_optind], "--help") == 0) {
+            ++_PyOS_optind;
+            return 'h';
+        }
+
+        else if (strcmp(argv[_PyOS_optind], "--version") == 0) {
+            ++_PyOS_optind;
+            return 'V';
+        }
+
+
+        opt_ptr = &argv[_PyOS_optind++][1];
+    }
+
+    if ((option = *opt_ptr++) == '\0')
+        return -1;
+
+    if (option == 'J') {
+        if (_PyOS_opterr)
+            fprintf(stderr, "-J is reserved for Jython\n");
+        return '_';
+    }
+
+    if (option == 'X') {
+        if (_PyOS_opterr)
+            fprintf(stderr,
+                "-X is reserved for implementation-specific arguments\n");
+        return '_';
+    }
+
+    if ((ptr = strchr(optstring, option)) == NULL) {
+        if (_PyOS_opterr)
+            fprintf(stderr, "Unknown option: -%c\n", option);
+
+        return '_';
+    }
+
+    if (*(ptr + 1) == ':') {
+        if (*opt_ptr != '\0') {
+            _PyOS_optarg  = opt_ptr;
+            opt_ptr = "";
+        }
+
+        else {
+            if (_PyOS_optind >= argc) {
+                if (_PyOS_opterr)
+                    fprintf(stderr,
+                        "Argument expected for the -%c option\n", option);
+                return '_';
+            }
+
+            _PyOS_optarg = argv[_PyOS_optind++];
+        }
+    }
+
+    return option;
+}
+
+#ifdef __cplusplus
+}
+#endif
+