diff --git autoconf-clean/build-aux/config.sub autoconf-workdir/build-aux/config.sub
index 59bb593..0f608e9 100755
--- autoconf-clean/build-aux/config.sub
+++ autoconf-workdir/build-aux/config.sub
@@ -1343,7 +1343,7 @@ case $os in
 	# The portable systems comes first.
 	# Each alternative MUST END IN A *, to match a version number.
 	# -sysv* is not here because it comes later, after sysvr4.
-	-gnu* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
+	-gnu* | -astral* | -bsd* | -mach* | -minix* | -genix* | -ultrix* | -irix* \
 	      | -*vms* | -sco* | -esix* | -isc* | -aix* | -cnk* | -sunos | -sunos[34]*\
 	      | -hpux* | -unos* | -osf* | -luna* | -dgux* | -auroraux* | -solaris* \
 	      | -sym* | -kopensolaris* \