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diff -ur gdb-7.4.1.orig/gdb/python/python.c gdb-7.4.1/gdb/python/python.c
--- gdb-7.4.1.orig/gdb/python/python.c 2012-01-15 02:04:05.000000000 +0800
+++ gdb-7.4.1/gdb/python/python.c 2012-08-21 15:11:32.000000000 +0800
@@ -1273,6 +1273,15 @@
SLASH_STRING, "python", NULL));
#endif
+ char readlinkbuffer[BUFSIZ];
+ int readlinks = readlink("/proc/self/exe", readlinkbuffer, BUFSIZ - 1);
+ readlinkbuffer[readlinks] = 0;
+ char *executeablepath = dirname(readlinkbuffer);
+ char *pythonhome = malloc(strlen(executeablepath) + strlen("/../") + 2);
+ strcpy(pythonhome, executeablepath);
+ strcat(pythonhome, "/../");
+ setenv("PYTHONHOME", pythonhome, 1);
+
Py_Initialize ();
PyEval_InitThreads ();
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