From 6ef9b50581989bc7cfcf142cb132a4491c9012a7 Mon Sep 17 00:00:00 2001
From: Tristan Gingold <tgingold@free.fr>
Date: Wed, 1 Jan 2014 08:36:59 +0100
Subject: Add a note for ppc64 in gcc/README.

---
 translate/gcc/README | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'translate')

diff --git a/translate/gcc/README b/translate/gcc/README
index a2df5d974..1152e9908 100644
--- a/translate/gcc/README
+++ b/translate/gcc/README
@@ -70,4 +70,18 @@ Please report bugs on https://gna.org/bugs/?group=ghdl
 If you cannot compile, please report the gcc version, GNAT version and gcc
 source version.
 
+* Note for ppc64 (and AIX ?) platform:
+The object file format contains an identifier for the source language. Because
+gcc doesn't know about the VHDL, gcc crashes very early. This could be fixed
+with a very simple change in gcc/config/rs6000/rs6000.c,
+function rs6000_output_function_epilogue (as of gcc 4.8):
+       else if (! strcmp (language_string, "GNU Objective-C"))
+        i = 14;
+       else
+-       gcc_unreachable ();
++       i = 0;
+       fprintf (file, "%d,", i);
+
+       /* 8 single bit fields: global linkage (not set for C extern linkage,
+
 Tristan Gingold.
-- 
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