From f14ca5e79c1e2caef25e3ac0b7f45a6a38cbe68a Mon Sep 17 00:00:00 2001
From: alperaltuntas <alperaltuntas@gmail.com>
Date: Fri, 9 Jul 2021 14:07:42 -0600
Subject: [PATCH] add default double 8 flag to GNU FC_AUTO_R8

---
 config/cesm/machines/config_compilers.xml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/config/cesm/machines/config_compilers.xml b/config/cesm/machines/config_compilers.xml
index 10655f90029..90f066e7760 100644
--- a/config/cesm/machines/config_compilers.xml
+++ b/config/cesm/machines/config_compilers.xml
@@ -196,7 +196,7 @@ using a fortran linker.
   </CPPDEFS>
   <CXX_LINKER>FORTRAN</CXX_LINKER>
   <FC_AUTO_R8>
-    <base> -fdefault-real-8 </base>
+    <base> -fdefault-real-8 -fdefault-double-8</base>
   </FC_AUTO_R8>
   <FFLAGS>
     <!-- -ffree-line-length-none and -ffixed-line-length-none need to be in FFLAGS rather than in FIXEDFLAGS/FREEFLAGS