From aaf3388cfe8cf271aa925b72e4126ee2deade927 Mon Sep 17 00:00:00 2001
From: Michael Kuhn <michael.kuhn@informatik.uni-hamburg.de>
Date: Wed, 13 May 2020 14:53:49 +0200
Subject: [PATCH] esmf: fix build with gcc@10: (#16622)

---
 var/spack/repos/builtin/packages/esmf/package.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/var/spack/repos/builtin/packages/esmf/package.py b/var/spack/repos/builtin/packages/esmf/package.py
index d63af514ff..b533851228 100644
--- a/var/spack/repos/builtin/packages/esmf/package.py
+++ b/var/spack/repos/builtin/packages/esmf/package.py
@@ -146,6 +146,9 @@ def edit(self, spec, prefix):
             # Build an optimized version of the library.
             os.environ['ESMF_BOPT'] = 'O'
 
+        if self.spec.satisfies('%gcc@10:'):
+            os.environ['ESMF_F90COMPILEOPTS'] = '-fallow-argument-mismatch'
+
         #######
         # MPI #
         #######