Index: libunwindTest2/libunwind/README
===================================================================
--- libunwindTest2.orig/libunwind/README
+++ libunwindTest2/libunwind/README
@@ -49,6 +49,24 @@ libunwind should be configured and insta
 Caveat: Unwinding of 32-bit (ILP32) binaries is not supported
 	at the moment.
 
+* Building for PowerPC64 / Linux
+
+For building for power64 you should use:
+
+    $ ./configure CFLAGS="-g -O2 -m64" CXXFLAGS="-g -O2 -m64"
+
+If your power support altivec registers:
+    $ ./configure CFLAGS="-g -O2 -m64 -maltivec" CXXFLAGS="-g -O2 -m64 -maltivec"
+
+To check if your processor has support for vector registers (altivec):
+    cat /proc/cpuinfo | grep altivec
+and should have something like this:
+    cpu             : PPC970, altivec supported
+
+If libunwind seens to not work (backtracing failing), try to compile it with -O0,
+without optimizations. There are some compiler problems depending on the version
+of your gcc.
+
 ** Workaround for older versions of GCC
 
 GCC v3.0 and GCC v3.2 ship with a bad version of sys/types.h.  The