build

--- a/build	Tue Mar 11 13:05:11 1997 +0100
+++ b/build	Tue Mar 11 13:05:40 1997 +0100
@@ -33,7 +33,7 @@
 
 ## build it
 
-# FIXME isatool makelogics
+export THIS_IS_ISABELLE_BUILD=true
 
 for DIR in $LOGICS
 do