[Module::Build] M::B 0.21 OSX warnings

[Chris D. <ch...@cl...>]

I saw a bunch of warnings from 'Build test' on Mac OSX, perl 5.8.1, 
M::B v0.21.  These occur in manifypods.t, and originate from 
File::Spec::Unix::canonpath() getting undef and not handling it 
properly.

First, I submitted a patch to File::Spec to better handle the undef.  
But, we really shouldn't be handing undef to canonpath in the first 
place.

I discovered the source of the undef by running:
    perl -w -Mblib -MCarp -e'$SIG{__WARN__}=\&confess;do"t/manifypods.t"'
which showed the cause to be localize_file_path() called with '' as the 
path.

The following patch prevents localize_file_path from trying to do any 
work if the path is already localized by virtue of being relative.

Chris

--- lib/Module/Build/Base.pm.orig      2003-10-16 09:29:52.000000000 
-0500
+++ lib/Module/Build/Base.pm    2003-10-16 10:06:32.000000000 -0500
@@ -1221,6 +1221,7 @@

  sub localize_file_path {
    my ($self, $path) = @_;
+  return $path unless ($path =~ m{/});
    return File::Spec->catfile( split qr{/}, $path );
  }

--
Chris Dolan, Software Developer, Clotho Advanced Media Inc.
ch...@cl..., 294-7900, 211 S Paterson, Madison WI 53703