From dbdd3f021e6af725edd6334b63538c92eae872b5 Mon Sep 17 00:00:00 2001
From: Ingmar Schoegl <ischoegl@lsu.edu>
Date: Mon, 12 Sep 2022 11:36:57 -0500
Subject: [PATCH] [SCons] Disable Fortran for Apple clang by default

On Apple Silicon, the combination of gfortran with Apple clang compilers
causes hard crashes for F90 examples. Changing the default avoids this
issue; users can override by passing 'f90_interface=y' to SCons.
---
 SConstruct | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/SConstruct b/SConstruct
index 85d0b93107c..3e594242b5c 100644
--- a/SConstruct
+++ b/SConstruct
@@ -1411,6 +1411,9 @@ end program main
 
 set_fortran("{}FLAGS", env["FORTRANFLAGS"])
 
+if env["using_apple_clang"] and env["f90_interface"] == "default":
+    env["f90_interface"] = "n"
+
 if env['f90_interface'] in ('y','default'):
     foundF90 = False
     if env['FORTRAN']: