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>
83 lines
1.5 KiB
C
83 lines
1.5 KiB
C
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/* Two PD getcwd() implementations.
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Author: Guido van Rossum, CWI Amsterdam, Jan 1991, <guido@cwi.nl>. */
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#include <stdio.h>
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#include <errno.h>
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#ifdef HAVE_GETWD
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/* Version for BSD systems -- use getwd() */
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#ifndef MAXPATHLEN
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#if defined(PATH_MAX) && PATH_MAX > 1024
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#define MAXPATHLEN PATH_MAX
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#else
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#define MAXPATHLEN 1024
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#endif
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#endif
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extern char *getwd(char *);
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char *
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getcwd(char *buf, int size)
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{
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char localbuf[MAXPATHLEN+1];
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char *ret;
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if (size <= 0) {
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errno = EINVAL;
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return NULL;
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}
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ret = getwd(localbuf);
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if (ret != NULL && strlen(localbuf) >= (size_t)size) {
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errno = ERANGE;
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return NULL;
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}
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if (ret == NULL) {
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errno = EACCES; /* Most likely error */
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return NULL;
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}
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strncpy(buf, localbuf, size);
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return buf;
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}
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#else /* !HAVE_GETWD */
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/* Version for really old UNIX systems -- use pipe from pwd */
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#ifndef PWD_CMD
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#define PWD_CMD "/bin/pwd"
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#endif
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char *
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getcwd(char *buf, int size)
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{
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FILE *fp;
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char *p;
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if (size <= 0) {
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errno = EINVAL;
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return NULL;
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}
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if ((fp = popen(PWD_CMD, "r")) == NULL)
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return NULL;
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if (fgets(buf, size, fp) == NULL || pclose(fp) != 0) {
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errno = EACCES; /* Most likely error */
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return NULL;
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}
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for (p = buf; *p != '\n'; p++) {
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if (*p == '\0') {
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errno = ERANGE;
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return NULL;
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}
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}
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*p = '\0';
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return buf;
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}
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#endif /* !HAVE_GETWD */
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