--- Makefile.PL.orig	Sat Aug 29 12:25:14 1998
+++ Makefile.PL	Sat Aug 29 12:25:52 1998
@@ -2,6 +2,6 @@
 WriteMakefile(
     NAME => "Tcl",
     VERSION => "b2",
-    LIBS => ["-ltcl -lm"],
-    INC => "-I/usr/local/include -I/usr/include/tcl"
+    LIBS => ["-L$ENV{PREFIX}/lib -ltcl80 -lm"],
+    INC => "-I$ENV{PREFIX}/include -I$ENV{PREFIX}/include/tcl8.0"
 );