From 222e001c1d9af9c78823d13daf9145c2375cf4aa Mon Sep 17 00:00:00 2001
From: Quincey Koziol <koziol@hdfgroup.org>
Date: Mon, 20 Oct 2003 23:08:51 -0500
Subject: [svn-r7684] Purpose:     Bug fix

Description:
    Reduce optimization level from -O3 to -O for gcc 3.*, since it seems to
be generating bad code for the atomic type conversions now...

Platforms tested:
    FreeBSD 4.9 (sleipnir)
    Linux 2.4 (eirene, verbena)
    h5committest not necessary, this is a GNU-only change.
---
 config/gnu-flags | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/config/gnu-flags b/config/gnu-flags
index afb451a..1a7a786 100644
--- a/config/gnu-flags
+++ b/config/gnu-flags
@@ -117,7 +117,20 @@ case "$cc_vendor-$cc_version" in
 
     # Production
     case "$cc_vendor-$cc_version" in
-      gcc-2.95.[34]|gcc-3*)
+      gcc-2.95.[34])
+        PROD_CFLAGS="-O3 $NOFP"
+        ;;
+      gcc-3.[0-3]*)
+        # The optimization level is reduced for gcc 3.* due to problems
+        # with code generation for src/H5Tconv.c with the -O2 & -O3 
+        # optimization levels for gcc 3.2.2 and gcc 3.3.2 (which shows up as
+        # failures for various integer types -> long long conversions in the
+        # test/dtypes test).  Perhaps later versions of gcc will fix this
+        # bug... - QAK - 2003/10/20
+        PROD_CFLAGS="-O $NOFP"
+        ;;
+      gcc-3*)
+        # Be optimistic about future versions of gcc.. :-) - QAK - 2003/10/20
         PROD_CFLAGS="-O3 $NOFP"
         ;;
       *)
-- 
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