diff --git a/packages/access-om3-nuopc/package.py b/packages/access-om3-nuopc/package.py
index e00ddea..01f3ae5 100644
--- a/packages/access-om3-nuopc/package.py
+++ b/packages/access-om3-nuopc/package.py
@@ -3,7 +3,8 @@
 #
 # SPDX-License-Identifier: (Apache-2.0 OR MIT)
 
-from spack.package import CMakePackage, variant, version
+from spack.package import CMakePackage, variant, version, depends_on
+from spack.compilers import supported_compilers
 
 
 class AccessOm3Nuopc(CMakePackage):
@@ -56,9 +57,14 @@ class AccessOm3Nuopc(CMakePackage):
     depends_on("mpi")
     depends_on("netcdf-fortran@4.6.0:")
     depends_on("esmf@8.3.0:")
-    depends_on("fms@2021.03:")
-    depends_on("parallelio@2.5.10:")
     depends_on("fortranxml@4.1.2:")
+    depends_on("fms@2021.03: build_type==RelWithDebInfo precision=64 +large_file ~gfs_phys ~quad_precision")
+    depends_on("fms +openmp", when="+openmp")
+    depends_on("fms ~openmp", when="~openmp")
+
+    depends_on("parallelio@2.5.10: build_type==RelWithDebInfo")
+    if 'intel' in supported_compilers():
+        depends_on("parallelio fflags='-qno-opt-dynamic-align -convert big_endian -assume byterecl -ftz -traceback -assume realloc_lhs -fp-model source' cflags='-qno-opt-dynamic-align -fp-model precise -std=gnu99'")
 
     flag_handler = CMakePackage.build_system_flags