Changes between Version 13 and Version 14 of PyOtherSideForAndroid

Timestamp:

Sep 24, 2014, 12:38:08 AM (10 years ago)

Author:

Martin Kolman

Comment:

--

PyOtherSideForAndroid

@@ -101 +101 @@
 Now the !PyOtherSide project should be ready to be opened in !QtCreator (make sure you are running the one corresponding to the Qt 5.3 Android SDK you have downloaded and installed previously). So start the right !QtCreator and open the ''pyotherside-1.3.0/pyotherside.pro'' file.
 
+And for the last step, we need to edit the ''src/global_libpython_loader.cpp'' file: 
+
+ * changing ''#ifdef !__linux!__'' into ''#ifndef !__linux!__'' (so that the stuff we need will be used on Android)
+
+ * remove a GNU macro an linh.h file (both are broken on Android and break the build):
+
+{{{
+#define _GNU_SOURCE
+#include <link.h>
+}}}
+
+ * add a few headers file needed for compilation on Android (found by studying compile errors):
+
+{{{
+#include <dlfcn.h>
+#include <link.h>
+}}}
+
+The resulting file looks like this:
+
+{{{
+/**
+ * PyOtherSide: Asynchronous Python 3 Bindings for Qt 5
+ * Copyright (c) 2013, Thomas Perl <m@thp.io>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ **/
+
+#include "global_libpython_loader.h"
+
+namespace GlobalLibPythonLoader {
+
+#ifndef __linux__
+
+#include <stdio.h>
+#include <string.h>
+
+#include <dlfcn.h>
+#include <link.h>
+
+static int load_python_globally_callback(struct dl_phdr_info *info, size_t size, void *data)
+{
+    int major, minor;
+    const char *basename = strrchr(info->dlpi_name, '/');
+    int *success = (int *)data;
+
+    if (basename != NULL) {
+        if (sscanf(basename, "/libpython%d.%d.so", &major, &minor) != 2) {
+            if (sscanf(basename, "/libpython%d.%dm.so", &major, &minor) != 2) {
+                return 0;
+            }
+        }
+
+        void *pylib = dlopen(info->dlpi_name, RTLD_GLOBAL | RTLD_NOW);
+        if (pylib != NULL) {
+            *success = 1;
+        } else {
+            fprintf(stderr, "Could not load python library '%s': %s\n",
+                    info->dlpi_name, dlerror());
+        }
+    }
+
+    return 0;
+}
+
+bool loadPythonGlobally()
+{
+    int success = 0;
+    dl_iterate_phdr(load_python_globally_callback, &success);
+    return success;
+}
+
+
+#else /* __linux__ */
+
+bool loadPythonGlobally()
+{
+    /* On non-Linux systems, no need to load globally */
+    return true;
+}
+
+#endif /* __linux__ */
+
+}; /* namespace GlobalLibPythonLoader */
+
+}}}
+
+This last change makes !PyOtherSide compile with the crippled Bionic C library used on Android.
+
+'''The resulting project should look like contents of this tarball:'''
+
+Now you should be able to build the !PyOtherSide project by pressing the "rebuild" button in !QtCreator.
+
 === Basic deployment ===
 === Running a "hello world" program ===