diff -ur algol68g.orig/configure.ac algol68g/configure.ac

--- algol68g.orig/configure.ac	2022-02-06 19:38:38.881835661 -0500

+++ algol68g/configure.ac	2022-02-06 19:40:29.389160612 -0500

@@ -200,8 +200,8 @@

 #

 # Linux.

 #

-# aarch64*-*-linux* is for RaspberryPi-4 on ARM-64 - otherwise http/tcp isnt found

-*86-*-gnu | *86_64-*-gnu | *86-*-linux* | *86_64-*-linux* | arm*-*-linux* | aarch*-*-linux*) 

+# Any Linux should work for ALT!

+*-*-linux*)

   AC_DEFINE(BUILD_LINUX, 1, [Define this if LINUX was detected]) 

   AC_DEFINE(HAVE_IEEE_754, 1, [Define this if IEEE_754 compliant])

   AC_MSG_RESULT([linux])

Only in algol68g: configure.ac~