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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
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package with_fallback;
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sub import {
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use File::Basename;
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use File::Spec::Functions;
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foreach (@_) {
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eval "require $_";
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if ($@) {
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unshift @INC, catdir(dirname(__FILE__), "..", "external", "perl");
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my $transfer = "transfer::$_";
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eval "require $transfer";
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shift @INC;
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warn $@ if $@;
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}
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}
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}
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1;
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