Chih-Hsuan Yen <yan12...@gmail.com> added the comment: Here are some ideas after testing:
* Testing environment: - My building scripts at https://github.com/yan12125/python3-android/ - Android NDK r16b - Google's emulator image 'system-images;android-19;default;x86' * Ideas/findings: - Locale emulation for setlocale() no longer works as _locale builds fine. >>> locale.setlocale(locale.LC_ALL, None) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/data/local/tmp/python3/usr/lib/python3.7/locale.py", line 608, in setlocale return _setlocale(category, locale) locale.Error: locale query failed - Declarations for mmap/sendfile shouldn't be necessary. In Android NDK r16b, sendfile() is defined if __USE_FILE_OFFSET64 is not defined: (from $ANDROID_NDK/sysroot/usr/include/sys/sendfile.h) #if defined(__USE_FILE_OFFSET64) #if __ANDROID_API__ >= 21 ssize_t sendfile(int __out_fd, int __in_fd, off_t* __offset, size_t __count) __RENAME(sendfile64) __INTRODUCED_IN(21); #endif /* __ANDROID_API__ >= 21 */ #else ssize_t sendfile(int __out_fd, int __in_fd, off_t* __offset, size_t __count); #endif #if __ANDROID_API__ >= 21 ssize_t sendfile64(int __out_fd, int __in_fd, off64_t* __offset, size_t __count) __INTRODUCED_IN(21); #endif /* __ANDROID_API__ >= 21 */ __USE_FILE_OFFSET64 is defined as _FILE_OFFSET_BITS is defined to 64 in pyconfig.h. An NDK developer suggest "stop defining _FILE_OFFSET_BITS=64 on 32-bit Android." (https://github.com/android-ndk/ndk/issues/536#issuecomment-333197557) Either disabling large file support on Android or simply don't define _FILE_OFFSET_BITS on Android should work. (Android does not use _LARGEFILE_SOURCE) - SIGRTMIN/SIGRTMAX: This is a bug on older NDK. r15 has fixed it (https://github.com/android-ndk/ndk/issues/352). I propose to wait until CPython builds with NDK r15+. I don't like adding patches for a known bug in older toolchains and revert them later. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue32654> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
