From 2143649b44a35daf23ea6938407c38f00059dd4a Mon Sep 17 00:00:00 2001
From: Dana Robinson <43805+derobins@users.noreply.github.com>
Date: Mon, 9 Oct 2023 08:18:01 -0700
Subject: [PATCH] Switch IEEE flags for NAG Fortran (#3644)

Default is -ieee=stop, which causes problems when the H5T
module performs floating-point type introspection.

The new mode is -ieee=full
---
 config/linux-gnulibc1 | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/config/linux-gnulibc1 b/config/linux-gnulibc1
index ab7e28f73dd..95d7d644fcc 100644
--- a/config/linux-gnulibc1
+++ b/config/linux-gnulibc1
@@ -131,8 +131,6 @@ case $FC_BASENAME in
         H5_CFLAGS="$H5_CFLAGS"
 
         F9XSUFFIXFLAG=""
-# We force compiler to use upper case for external names
-# (just in case since this should be a default EIP)
         H5_FCFLAGS="$H5_FCFLAGS"
         FSEARCH_DIRS=""
 
@@ -162,9 +160,10 @@ case $FC_BASENAME in
     nagfor)
 
         F9XSUFFIXFLAG=""
-# We force compiler to use upper case for external names
-# (just in case since this should be a default EIP)
-        H5_FCFLAGS="$H5_FCFLAGS"
+        # NOTE: The default is -ieee=stop, which will cause problems
+        #       when the H5T module performs floating-point type
+        #       introspection
+        H5_FCFLAGS="$H5_FCFLAGS -ieee=full"
         FSEARCH_DIRS=""
 
         # Production