New submission from Cyd Haselton: This is a (hopefully) complete list of patches and modifications required to natively build Python 3.4.2 on an Android device where patches == listed issues in this bug tracker modifications (mods) == unsubmitted patches and/or edits made to source
CAVEATS Build was completed on a tablet running Android 4.4.2 and within the KBOX environment; an app that simulates a Linux filesystem by using a ported version of fakechroot. Details of the environment can be found here: http://kevinboone.net/kbox2_how_it_works.html. NOTE: During the Python build it was necessary to patch this environment with a modified version of fakechroot; the KBOX version currently available as of 2.21.2015 may not contain the modified fakechroot. CONFIGURE && POST-CONFIGURE && MAKE The configure command was run with the following parameters --enable-shared --without-ensurepip --prefix=/usr/python After running configure. changes were made to pyconfig.h to account for various platform limitations and to Setup to ensure that a) all modules specified were built as shared and b) modules that used symbols from libpython were explicitly linked to said library. See attached pyconfig.h and Setup. Make fails when the newly built python binary tries to execute and run setup.py. This is resolved by copying the shared library from the build directory to /lib in the KBOX environment. Otherwise make && make install runs without errors provided patches/mods are applied. I did not run make test or the equivalent for this build. PATCHES/MODS The attached patches from the following issues must be applied: http://bugs.python.org/issue20305 http://bugs.python.org/issue16353 (NOTE: use patch with 'defpath' not 'confstr', which is not supported in Android) http://bugs.python.org/issue21668 The following modifications to source must be made: The instructions under 'Code Changes' at this link: https://code.google.com/p/python-for-android/wiki/CrossCompilingPython The attached patch, contributed by Ryan Gonzales (patch.diff) The changes listed below by file (apologies for formatting) /* patch for strdup segfault issue in readline.c */ #define RESTORE_LOCALE(sl) { if (sl) { setlocale(LC_CTYPE, sl); free(sl); } } char *_locale = setlocale(LC_CTYPE, NULL); char *saved_locale; if(!_locale) _locale = ""; saved_locale = strdup(_locale); char *saved_locale = setlocale(LC_CTYPE, NULL); if (saved_locale != NULL) { saved_locale = strdup(saved_locale); if (!saved_locale) Py_FatalError("not enough memory to save locale"); } /* fix for Lib/ctypes/__init.py__ */ 30 DEFAULT_MODE == RTLD_GLOBAL /* patch for python.c */ /* here line for oldloc is commented out */ 24 int i, res; 25 /* char *oldloc; */ 26 #ifdef __FreeBSD__ /* here oldloc lines commented out */ 46 47 /* oldloc = _PyMem_RawStrdup(setlocale(LC_ALL, NULL)); 48 * if (!oldloc) { 49 * fprintf(stderr, "out of memory\n"); 50 * return 1; 51 * 52 * } 53 */ /* patch for pythonrun.c 307, --309-310, ++311-313 --1009-1012 ++1013-1014 */ 305 return get_codec_name(codeset); 306 #else 307 char* m; 308 PyErr_SetNone(PyExc_NotImplementedError); 309 /* return NULL; */ 310 /* char* m; */ 311 m = malloc(6); 312 strcpy(m, "ascii"); 313 return m; 314 #endif 315 } 1002 static int 1003 initfsencoding(PyInterpreterState *interp) 1004 { 1005 PyObject *codec; 1006 1007 if (Py_FileSystemDefaultEncoding == NULL) 1008 { 1009 /* Py_FileSystemDefaultEncoding = get_locale_encoding(); 1010 * if (Py_FileSystemDefaultEncoding == NULL) 1011 * Py_FatalError("Py_Initialize: Unable to get the locale encoding 1011 "); 1012 */ 1013 Py_FileSystemDefaultEncoding = malloc(6); 1014 strcpy(Py_FileSystemDefaultEncoding, "ascii"); 1015 Py_HasFileSystemDefaultEncoding = 0; 1016 interp->fscodec_initialized = 1; 1017 return 0; 1018 } 1019 /* changes to Lib/plat-linux/DLFCN.py */ 76 # Included from bits/dlfcn.h 77 # Changed for Android 78 RTLD_LAZY = 1 79 RTLD_NOW = 0 80 #RTLD_BINDING_MASK = 0x3 81 #RTLD_NOLOAD = 0x00004 82 RTLD_GLOBAL = 2 83 RTLD_LOCAL = 0 84 #RTLD_NODELETE = 0x01000 85 86 # Also from Android's dlfcn.h 87 RTLD_DEFAULT ((void*) 0xffffffff) 88 RTLD_NEXT ((void*) 0xfffffffe) 89 ---------- components: Build files: patch.diff keywords: patch messages: 236389 nosy: chaselton priority: normal severity: normal status: open title: Steps for Android Native Build of Python 3.4.2 versions: Python 3.4 Added file: http://bugs.python.org/file38201/patch.diff _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue23496> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
