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 +1,49 @@
+"""Interpret sun audio headers."""
+from warnings import warnpy3k
+warnpy3k("the sunaudio module has been removed in Python 3.0; "
+         "use the sunau module instead", stacklevel=2)
+del warnpy3k
+
+
+MAGIC = '.snd'
+
+class error(Exception):
+    pass
+
+
+def get_long_be(s):
+    """Convert a 4-char value to integer."""
+    return (ord(s[0])<<24) | (ord(s[1])<<16) | (ord(s[2])<<8) | ord(s[3])
+
+
+def gethdr(fp):
+    """Read a sound header from an open file."""
+    if fp.read(4) != MAGIC:
+        raise error, 'gethdr: bad magic word'
+    hdr_size = get_long_be(fp.read(4))
+    data_size = get_long_be(fp.read(4))
+    encoding = get_long_be(fp.read(4))
+    sample_rate = get_long_be(fp.read(4))
+    channels = get_long_be(fp.read(4))
+    excess = hdr_size - 24
+    if excess < 0:
+        raise error, 'gethdr: bad hdr_size'
+    if excess > 0:
+        info = fp.read(excess)
+    else:
+        info = ''
+    return (data_size, encoding, sample_rate, channels, info)
+
+
+def printhdr(file):
+    """Read and print the sound header of a named file."""
+    hdr = gethdr(open(file, 'r'))
+    data_size, encoding, sample_rate, channels, info = hdr
+    while info[-1:] == '\0':
+        info = info[:-1]
+    print 'File name:  ', file
+    print 'Data size:  ', data_size
+    print 'Encoding:   ', encoding
+    print 'Sample rate:', sample_rate
+    print 'Channels:   ', channels
+    print 'Info:       ', repr(info)