--- contrib/download_prerequisites.orig	2020-03-04 19:29:59.000000000 +1100
+++ contrib/download_prerequisites	2020-09-22 11:31:29.197499000 +1000
@@ -47,7 +47,7 @@
 OS=$(uname)
 
 case $OS in
-  "Darwin"|"FreeBSD"|"DragonFly")
+  "BSDSUniX"|"Darwin"|"FreeBSD"|"DragonFly")
     chksum='shasum -a 512 --check'
   ;;
   *)