Hi,
The current Inline/C/Makefile.PL (http://search.cpan.org/src/INGY/Inline-0.44/C/Makefile.PL) begins with the following code:

use strict;
use ExtUtils::MakeMaker;
use Config;
use File::Spec;

my ($cc, $exe) = @Config{'cc', '_exe'};
$cc =~ s/\s+-.+$//; #remove possible trailing options

my $found = 0;
my $delim = $^O eq 'MSWin32' ? ';' : ':';
if ($cc =~ m|/:\[|) {
    $found = -f "$cc$exe";
}
else {
    for my $lib (split $delim, $ENV{PATH}) {
    $found = -f File::Spec->catfile($lib,"$cc$exe") and last;
    }
}
[download]

I have difficulty working out how $cc will ever match |/:\[| - can someone here provide some insight into the point of that test ?

Cheers,
Rob