I've found on my system (RedHat Enterprise AS3) that when using perl Makefile.PL LIB=/my/local/lib, some modules install to /my/local/lib/i386-linux-thread-multi, ie $CPANBASE/$SITEARCH.

setlib.cfg does not add this by default to @localPerlLibPath, instead it adds $CPANBASE/$VER/$SITEARCH. So I think this diff would be helpful:

--- setlib.cfg~ 2006-07-12 14:44:15.000000000 +0100
+++ setlib.cfg  2006-07-21 16:10:25.000000000 +0100
@@ -39,7 +39,7 @@
        require Config;
        my $VER = $Config::Config{version};
        my $SITEARCH = $Config::Config{archname};
-       push @localPerlLibPath, ( "$CPANBASE/arch/", "$CPANBASE/$VER/$SITEARCH/", "$CPANBASE/$VER/", "$CPANBASE/" );
+       push @localPerlLibPath, ( "$CPANBASE/arch/", "$CPANBASE/$VER/$SITEARCH/", "$CPANBASE/$VER/", "$CPANBASE/$SITEARCH/", "$CPANBASE/" );
 }

 # Prepend to @INC, the Perl search path for modules

Are the trailing slashes at the end of each (and $CPANBASE) really needed? The standard @INC doesn't need them, and as things stand you get a double slash between $CPANBASE and the rest of each path.

4.1.0 released

KJL