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>
32 lines
705 B
C
32 lines
705 B
C
/*
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* Public domain dup2() lookalike
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* by Curtis Jackson @ AT&T Technologies, Burlington, NC
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* electronic address: burl!rcj
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*
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* dup2 performs the following functions:
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*
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* Check to make sure that fd1 is a valid open file descriptor.
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* Check to see if fd2 is already open; if so, close it.
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* Duplicate fd1 onto fd2; checking to make sure fd2 is a valid fd.
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* Return fd2 if all went well; return BADEXIT otherwise.
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*/
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#include <fcntl.h>
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#include <unistd.h>
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#define BADEXIT -1
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int
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dup2(int fd1, int fd2)
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{
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if (fd1 != fd2) {
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if (fcntl(fd1, F_GETFL) < 0)
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return BADEXIT;
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if (fcntl(fd2, F_GETFL) >= 0)
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close(fd2);
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if (fcntl(fd1, F_DUPFD, fd2) < 0)
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return BADEXIT;
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}
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return fd2;
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}
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