tealeaf: Don't add -march=native on ARM and gcc 5.x or before. (#12080)

var/spack/repos/builtin/packages/tealeaf/package.py

@@ -24,6 +24,12 @@ class Tealeaf(MakefilePackage):
 
     depends_on('mpi')
 
+    def edit(self, spec, prefix):
+        if (spec.satisfies('target=aarch64 %gcc@:5.9')):
+            filter_file(
+                '-march=native', '', join_path('TeaLeaf_ref', 'Makefile')
+            )
+
     @property
     def build_targets(self):
         targets = [