From 5b4b418289c86fbed8a4fc93b72633e1cce304b9 Mon Sep 17 00:00:00 2001
From: Axel Kohlmeyer <akohlmey@gmail.com>
Date: Thu, 1 Aug 2019 18:24:14 -0400
Subject: [PATCH] use check_language() instead of enable_language() to get
 fortran compiler name

---
 cmake/Modules/Packages/KIM.cmake | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/cmake/Modules/Packages/KIM.cmake b/cmake/Modules/Packages/KIM.cmake
index d9d028f6dc..31586bfbe0 100644
--- a/cmake/Modules/Packages/KIM.cmake
+++ b/cmake/Modules/Packages/KIM.cmake
@@ -20,9 +20,13 @@ if(PKG_KIM)
       message(FATAL_ERROR "Cannot build downloaded KIM-API library with Ninja build tool")
     endif()
     message(STATUS "KIM-API download requested - we will build our own")
-    enable_language(C)
-    enable_language(Fortran)
+    include(CheckLanguage)
     include(ExternalProject)
+    enable_language(C)
+    check_language(Fortran)
+    if(NOT CMAKE_Fortran_COMPILER)
+      message(FATAL_ERROR "Compiling the KIM-API library requires a Fortran compiler")
+    endif()
     ExternalProject_Add(kim_build
       URL https://s3.openkim.org/kim-api/kim-api-2.1.2.txz
       URL_MD5 6ac52e14ef52967fc7858220b208cba5