From 00f44bfff74e7173a881c4d6849deb75b9dfbd6a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Markus=20M=C3=BCtzel?= <markus.muetzel@gmx.de>
Date: Fri, 21 Jan 2022 13:27:17 +0100
Subject: [PATCH] cmake: Check if Fortran compiler is usable before enabling
 it.

---
 cmake/f_check.cmake | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/cmake/f_check.cmake b/cmake/f_check.cmake
index 0f5d0e15d..14683ed21 100644
--- a/cmake/f_check.cmake
+++ b/cmake/f_check.cmake
@@ -20,19 +20,16 @@
 # NEEDBUNDERSCORE
 # NEED2UNDERSCORES
 
-if (NOT NO_LAPACK)
-  include(CheckLanguage)
-  check_language(Fortran)
-  if(CMAKE_Fortran_COMPILER)
-    enable_language(Fortran)
-  else()
-  message(STATUS "No Fortran compiler found, can build only BLAS but not LAPACK")
+include(CheckLanguage)
+check_language(Fortran)
+if(CMAKE_Fortran_COMPILER)
+  enable_language(Fortran)
+else()
+  if (NOT NO_LAPACK)
+    message(STATUS "No Fortran compiler found, can build only BLAS but not LAPACK")
+  endif()
   set (NOFORTRAN 1)
   set (NO_LAPACK 1)
-  endif()
-else()
-  include(CMakeForceCompiler)
-  CMAKE_FORCE_Fortran_COMPILER(gfortran GNU)
 endif()
 
 if (NOT ONLY_CBLAS)