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 +1,131 @@
+"""distutils.command.build_scripts
+
+Implements the Distutils 'build_scripts' command."""
+
+__revision__ = "$Id$"
+
+import os, re
+from stat import ST_MODE
+from distutils.core import Command
+from distutils.dep_util import newer
+from distutils.util import convert_path
+from distutils import log
+
+# check if Python is called on the first line with this expression
+first_line_re = re.compile('^#!.*python[0-9.]*([ \t].*)?$')
+
+class build_scripts (Command):
+
+    description = "\"build\" scripts (copy and fixup #! line)"
+
+    user_options = [
+        ('build-dir=', 'd', "directory to \"build\" (copy) to"),
+        ('force', 'f', "forcibly build everything (ignore file timestamps"),
+        ('executable=', 'e', "specify final destination interpreter path"),
+        ]
+
+    boolean_options = ['force']
+
+
+    def initialize_options (self):
+        self.build_dir = None
+        self.scripts = None
+        self.force = None
+        self.executable = None
+        self.outfiles = None
+
+    def finalize_options (self):
+        self.set_undefined_options('build',
+                                   ('build_scripts', 'build_dir'),
+                                   ('force', 'force'),
+                                   ('executable', 'executable'))
+        self.scripts = self.distribution.scripts
+
+    def get_source_files(self):
+        return self.scripts
+
+    def run (self):
+        if not self.scripts:
+            return
+        self.copy_scripts()
+
+
+    def copy_scripts (self):
+        """Copy each script listed in 'self.scripts'; if it's marked as a
+        Python script in the Unix way (first line matches 'first_line_re',
+        ie. starts with "\#!" and contains "python"), then adjust the first
+        line to refer to the current Python interpreter as we copy.
+        """
+        _sysconfig = __import__('sysconfig')
+        self.mkpath(self.build_dir)
+        outfiles = []
+        for script in self.scripts:
+            adjust = 0
+            script = convert_path(script)
+            outfile = os.path.join(self.build_dir, os.path.basename(script))
+            outfiles.append(outfile)
+
+            if not self.force and not newer(script, outfile):
+                log.debug("not copying %s (up-to-date)", script)
+                continue
+
+            # Always open the file, but ignore failures in dry-run mode --
+            # that way, we'll get accurate feedback if we can read the
+            # script.
+            try:
+                f = open(script, "r")
+            except IOError:
+                if not self.dry_run:
+                    raise
+                f = None
+            else:
+                first_line = f.readline()
+                if not first_line:
+                    self.warn("%s is an empty file (skipping)" % script)
+                    continue
+
+                match = first_line_re.match(first_line)
+                if match:
+                    adjust = 1
+                    post_interp = match.group(1) or ''
+
+            if adjust:
+                log.info("copying and adjusting %s -> %s", script,
+                         self.build_dir)
+                if not self.dry_run:
+                    outf = open(outfile, "w")
+                    if not _sysconfig.is_python_build():
+                        outf.write("#!%s%s\n" %
+                                   (self.executable,
+                                    post_interp))
+                    else:
+                        outf.write("#!%s%s\n" %
+                                   (os.path.join(
+                            _sysconfig.get_config_var("BINDIR"),
+                           "python%s%s" % (_sysconfig.get_config_var("VERSION"),
+                                           _sysconfig.get_config_var("EXE"))),
+                                    post_interp))
+                    outf.writelines(f.readlines())
+                    outf.close()
+                if f:
+                    f.close()
+            else:
+                if f:
+                    f.close()
+                self.copy_file(script, outfile)
+
+        if os.name == 'posix':
+            for file in outfiles:
+                if self.dry_run:
+                    log.info("changing mode of %s", file)
+                else:
+                    oldmode = os.stat(file)[ST_MODE] & 07777
+                    newmode = (oldmode | 0555) & 07777
+                    if newmode != oldmode:
+                        log.info("changing mode of %s from %o to %o",
+                                 file, oldmode, newmode)
+                        os.chmod(file, newmode)
+
+    # copy_scripts ()
+
+# class build_scripts