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>
61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
#include "Python.h"
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#include "osdefs.h"
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static char *prefix, *exec_prefix, *progpath, *module_search_path=NULL;
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static void
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calculate_path()
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{
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char *pypath = getenv("Python$Path");
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if (pypath) {
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int pathlen = strlen(pypath);
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module_search_path = malloc(pathlen + 1);
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if (module_search_path)
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strncpy(module_search_path, pypath, pathlen + 1);
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else {
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fprintf(stderr,
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"Not enough memory for dynamic PYTHONPATH.\n"
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"Using default static PYTHONPATH.\n");
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}
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}
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if (!module_search_path)
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module_search_path = "<Python$Dir>.Lib";
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prefix = "<Python$Dir>";
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exec_prefix = prefix;
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progpath = Py_GetProgramName();
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}
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/* External interface */
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char *
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Py_GetPath()
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{
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if (!module_search_path)
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calculate_path();
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return module_search_path;
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}
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char *
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Py_GetPrefix()
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{
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if (!module_search_path)
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calculate_path();
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return prefix;
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}
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char *
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Py_GetExecPrefix()
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{
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if (!module_search_path)
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calculate_path();
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return exec_prefix;
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}
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char *
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Py_GetProgramFullPath()
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{
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if (!module_search_path)
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calculate_path();
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return progpath;
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}
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