From 3599495c1170bccc860cabb88d2135933a17cca0 Mon Sep 17 00:00:00 2001
From: Edward Hartnett <Edward.Hartnett@noaa.gov>
Date: Wed, 27 May 2020 05:07:12 -0600
Subject: [PATCH] checking version of gfortran compiler

---
 CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 25c2d5fcab..6cab4e73e8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,6 +36,10 @@ add_definitions(-DUSE_COND)
 add_definitions(-DNEW_TAUCTMAX)
 add_definitions(-DINTERNAL_FILE_NML)
 
+if (CMAKE_Fortran_COMPILER_ID MATCHES "GNU" AND CMAKE_Fortran_COMPILER_VERSION VERSION_LESS 9.0.0)        
+  message(FATAL_ERROR "GNU Compiler >= 9 is required")
+endif()
+
 if(CCPP)
 
     find_package(Python 3 QUIET COMPONENTS Interpreter)