--- texk/web2c/configure.orig
+++ texk/web2c/configure
@@ -19419,8 +19419,8 @@
 
 LUAJIT_DEFINES='-DLUAJIT_ENABLE_LUA52COMPAT -DLUAI_HASHLIMIT=6'
 
-case $host_os:$host_cpu in #(
-  *darwin*:x86_64) :
+case $CFLAGS in #(
+  *"-arch x86_64"*) :
     LUAJIT_LDEXTRA='-pagezero_size 10000 -image_base 100000000' ;; #(
   *) :
      ;;