shenleiandClaude Opus 5
5fad769ee8
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>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
#include "Python.h"
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#include "asdl.h"
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asdl_seq *
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asdl_seq_new(int size, PyArena *arena)
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{
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asdl_seq *seq = NULL;
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size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);
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/* check size is sane */
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if (size < 0 || size == INT_MIN ||
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(size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {
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PyErr_NoMemory();
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return NULL;
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}
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/* check if size can be added safely */
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if (n > PY_SIZE_MAX - sizeof(asdl_seq)) {
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PyErr_NoMemory();
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return NULL;
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}
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n += sizeof(asdl_seq);
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seq = (asdl_seq *)PyArena_Malloc(arena, n);
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if (!seq) {
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PyErr_NoMemory();
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return NULL;
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}
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memset(seq, 0, n);
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seq->size = size;
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return seq;
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}
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asdl_int_seq *
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asdl_int_seq_new(int size, PyArena *arena)
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{
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asdl_int_seq *seq = NULL;
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size_t n = (size ? (sizeof(void *) * (size - 1)) : 0);
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/* check size is sane */
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if (size < 0 || size == INT_MIN ||
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(size && ((size - 1) > (PY_SIZE_MAX / sizeof(void *))))) {
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PyErr_NoMemory();
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return NULL;
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}
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/* check if size can be added safely */
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if (n > PY_SIZE_MAX - sizeof(asdl_seq)) {
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PyErr_NoMemory();
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return NULL;
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}
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n += sizeof(asdl_seq);
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seq = (asdl_int_seq *)PyArena_Malloc(arena, n);
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if (!seq) {
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PyErr_NoMemory();
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return NULL;
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}
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memset(seq, 0, n);
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seq->size = size;
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return seq;
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}
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