classlib-3.1.3-fix-unwind-x86_64.patch

diff --git a/src/utils/DebugAids.cpp b/src/utils/DebugAids.cpp
index 894c8a0..f014b1b 100644
--- a/src/utils/DebugAids.cpp
+++ b/src/utils/DebugAids.cpp
@@ -83,7 +83,7 @@ GetLogicalAddress (PVOID addr, PTSTR name, DWORD length,
 }
 #endif
 
-#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) // FIXME: Check
+#if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) && defined(__x86_64__) // FIXME: Check
 extern "C" {
     typedef unsigned _Unwind_Ptr __attribute__((__mode__(__pointer__)));
     struct _Unwind_Context;
@@ -168,7 +168,7 @@ unwindWalkStack (_Unwind_Context *ctx, void *data)
     writev (fd, bufs, nbufs);
     return _URC_NO_REASON;
 }
-#endif // GCC 3.4+
+#endif // (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) && defined(__x86_64__)
 
 
 #if __hpux
@@ -868,10 +868,10 @@ DebugAids::stacktrace (IOFD fd /* = IOFD_INVALID */)
     sprintf (buffer, PSTACK_COMMAND, (unsigned long) getpid (), fd);
     system (buffer);
 
-#elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+#elif (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) && defined(__x86_64__)
     // FIXME: Check for _Unwind*, compilers other than GCC support this API
     _Unwind_Backtrace (unwindWalkStack, &fd);
-#endif
+#endif // (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) && defined(__x86_64__)
 
     // FIXME: mpatrol has some generic unix unwind code.
     // FIXME: from unix faq: ask debugger to dump stack trace