From 22e4dd3aec762ecc957435e86b0dbf1b876efded Mon Sep 17 00:00:00 2001
From: Paul Romano <paul.k.romano@gmail.com>
Date: Wed, 13 May 2015 15:41:48 +0700
Subject: [PATCH] Check for gfortran version < 4.6 in CMakeLists.txt

---
 src/CMakeLists.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 734850fa2..8e97d0f57 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -56,6 +56,13 @@ endif()
 #===============================================================================
 
 if(CMAKE_Fortran_COMPILER_ID STREQUAL "GNU")
+  # Make sure version is sufficient
+  execute_process(COMMAND ${CMAKE_Fortran_COMPILER} -dumpversion
+    OUTPUT_VARIABLE GCC_VERSION)
+  if(GCC_VERSION VERSION_LESS 4.6)
+    message(FATAL_ERROR "gfortran version must be 4.6 or higher")
+  endif()
+
   # GNU Fortran compiler options
   set(f90flags  "-cpp -std=f2008 -fbacktrace")
   if(debug)