35c3a562c7
For our own convenience, we need a mechanism to be able to fall back
on bundled Perl modules. It's a minimal package that's called like
this:
use with_fallback qw(Module1 Module2 ...);
For each module, it will try to require them from the system
installation, and failing that, it will temporarly add external/perl
and try to require transfer::{ModuleName}. It requires that each
bundled Perl modules is accompanied by a small transfer module
(external/perl/transfer/ModuleName.pm in our example) that knows
exactly what to load.
Reviewed-by: Rich Salz <rsalz@openssl.org>
20 lines
350 B
Perl
20 lines
350 B
Perl
#! /usr/bin/perl
|
|
|
|
package with_fallback;
|
|
|
|
sub import {
|
|
use File::Basename;
|
|
use File::Spec::Functions;
|
|
foreach (@_) {
|
|
eval "require $_";
|
|
if ($@) {
|
|
unshift @INC, catdir(dirname(__FILE__), "..", "external", "perl");
|
|
my $transfer = "transfer::$_";
|
|
eval "require $transfer";
|
|
shift @INC;
|
|
warn $@ if $@;
|
|
}
|
|
}
|
|
}
|
|
1;
|