updated HPUX notes.
diff --git a/README b/README
index 8e5264a..5617eb3 100644
--- a/README
+++ b/README
@@ -363,11 +363,18 @@
like "cc_r". For full C++ module support, set CC="xlC_r" (or
CC="xlC" without thread support).
-HP-UX: When using threading, you may have to add -D_REENTRANT to the
+HP-UX: When using threading, you may have to add -D_REENTRANT to the
OPT variable in the top-level Makefile; reported by Pat Knight,
this seems to make a difference (at least for HP-UX 10.20)
- even though pyconfig.h defines it. Experience seems to show that
- building with HP's compiler works best if you set CC="cc -Ae".
+ even though pyconfig.h defines it. This seems unnecessary when
+ using HP/UX 11 and later - threading seems to work "out of the
+ box".
+
+HP-UX ia64: When building on the ia64 (Itanium) platform using HP's
+ compiler, some experience has shown that the compiler's
+ optimiser produces a completely broken version of python
+ (see http://www.python.org/sf/814976). To work around this,
+ edit the Makefile and remove -O from the OPT line.
HP PA-RISC 2.0: A recent bug report (http://www.python.org/sf/546117)
suggests that the C compiler in this 64-bit system has bugs