Re: Makefile.PL's with dependancies (was DBI Build error in36 line)

Sridhar Madadi <[email protected]> wrote:
> Hi All,
> 
> When I am trying to build DBI module, I am getting the below error. I am 
> running per 5.8.0 version

	It looks like the perl in your path isn't 5.8.0, even if you have a
5.8.0 package installed:

> Can't locate Test/More.pm in @INC (@INC contains: lib 
> /usr/perl5/5.6.1/lib/sun4-solaris-64int /usr/perl5/5.6.1/lib 
> /usr/perl5/site_perl/5.6.1/sun4-solaris-64int /usr/perl5/site_perl/5.6.1 
> /usr/perl5/site_perl /usr/perl5/vendor_perl/5.6.1/sun4-solaris-64int 
> /usr/perl5/vendor_perl/5.6.1 /usr/perl5/vendor_perl .) at Makefile.PL 
> line 36.

	Those are all 5.6.1 paths. Maybe you need to run
/opt/something/bin/perl instead?

	However, this reveals a more sinister problem with the Makefile.PL
in DBI:

use Test::Harness;      # tests use it so check it's loadable early
use Test::More 0.4;     # tests use it so check it's loadable early

	Those should probably just be handled by PREREQ_PM; CPAN will then
attempt to download the latest version if it's not installed; the
Makefile.PL will advise the user that these dependancies haven't been met;
if the user plows ahead and installs anyways, the tests may fail but at
least the code will still work.

	IMHO the only timea package should be "use"d in a Makefile.PL is if
the Makefile.PL itself needs it to make decision, and then it should fail
gracefully.

	In DBI's case it isn't neccessary at all. But I am working on some
modules where the Build.PL/Makefile.PL will require extra modules in order
to function. Is there currently a way to make CPAN/CPANPLUS re-run
Build.PL/Makefile.PL after dependancies have been satisfied? Especially
cosnidering that unlinking "Makefile" won't do the trick, since the
dependancies are often grabbed from there....

		- Tyler