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>
79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
|
|
/* Support for dynamic loading of extension modules */
|
|
|
|
#include "Python.h"
|
|
|
|
/* ./configure sets HAVE_DYNAMIC_LOADING if dynamic loading of modules is
|
|
supported on this platform. configure will then compile and link in one
|
|
of the dynload_*.c files, as appropriate. We will call a function in
|
|
those modules to get a function pointer to the module's init function.
|
|
*/
|
|
#ifdef HAVE_DYNAMIC_LOADING
|
|
|
|
#include "importdl.h"
|
|
|
|
extern dl_funcptr _PyImport_GetDynLoadFunc(const char *name,
|
|
const char *shortname,
|
|
const char *pathname, FILE *fp);
|
|
|
|
|
|
|
|
PyObject *
|
|
_PyImport_LoadDynamicModule(char *name, char *pathname, FILE *fp)
|
|
{
|
|
PyObject *m;
|
|
char *lastdot, *shortname, *packagecontext, *oldcontext;
|
|
dl_funcptr p;
|
|
|
|
if ((m = _PyImport_FindExtension(name, pathname)) != NULL) {
|
|
Py_INCREF(m);
|
|
return m;
|
|
}
|
|
lastdot = strrchr(name, '.');
|
|
if (lastdot == NULL) {
|
|
packagecontext = NULL;
|
|
shortname = name;
|
|
}
|
|
else {
|
|
packagecontext = name;
|
|
shortname = lastdot+1;
|
|
}
|
|
|
|
p = _PyImport_GetDynLoadFunc(name, shortname, pathname, fp);
|
|
if (PyErr_Occurred())
|
|
return NULL;
|
|
if (p == NULL) {
|
|
PyErr_Format(PyExc_ImportError,
|
|
"dynamic module does not define init function (init%.200s)",
|
|
shortname);
|
|
return NULL;
|
|
}
|
|
oldcontext = _Py_PackageContext;
|
|
_Py_PackageContext = packagecontext;
|
|
(*p)();
|
|
_Py_PackageContext = oldcontext;
|
|
if (PyErr_Occurred())
|
|
return NULL;
|
|
|
|
m = PyDict_GetItemString(PyImport_GetModuleDict(), name);
|
|
if (m == NULL) {
|
|
PyErr_SetString(PyExc_SystemError,
|
|
"dynamic module not initialized properly");
|
|
return NULL;
|
|
}
|
|
/* Remember the filename as the __file__ attribute */
|
|
if (PyModule_AddStringConstant(m, "__file__", pathname) < 0)
|
|
PyErr_Clear(); /* Not important enough to report */
|
|
|
|
if (_PyImport_FixupExtension(name, pathname) == NULL)
|
|
return NULL;
|
|
if (Py_VerboseFlag)
|
|
PySys_WriteStderr(
|
|
"import %s # dynamically loaded from %s\n",
|
|
name, pathname);
|
|
Py_INCREF(m);
|
|
return m;
|
|
}
|
|
|
|
#endif /* HAVE_DYNAMIC_LOADING */
|