B::PerlReq(3pm)

💖 B::PerlReq — bestie's guide to snitching on your Perl deps 💖

okay so. this is B::PerlReq, a manual page, and honestly? it's giving quiet overachiever. it's a Perl compiler backend whose whole personality is extracting Perl dependencies. that's it. that's the job. and it does it beautifully. 🎀

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✨ NAME ✨

B::PerlReq — Perl compiler backend to extract Perl dependencies 🦋

like. the name literally tells you everything. no notes. 💅

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🌸 SYNOPSIS 🌸

perl -MO=PerlReq[,-strict][,-relaxed][,-v][,-d] prog.pl

that bracket situation is optional flags, bestie. mix and match, pick your faves, go off. ✨

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💜 DESCRIPTION 💜

so here's the tea. B::PerlReq is a backend module for the Perl compiler (periodt), and its whole thing is that it extracts dependencies from Perl source code.

but — and this is the iconic part — it doesn't do the messy "read the text and guess" thing. no no. it works based on the internal compiled structure that Perl itself creates after parsing a program. 😭 she's reading Perl's own diary. the source of truth. the inside scoop.

the output of B::PerlReq is suitable for automatic dependency tracking — like, say, for RPM packaging. so if you're building packages and you need to know what a Perl script actually needs to run? yeah. this. this is the one. 🔥

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👑 OPTIONS 👑

one bullet per flag, no skips, no crumbs. let's go. 🫶

• -strict — operate in strict mode. for the deets, go peek at perl.req. iykyk. 😌
• -relaxed — operate in relaxed mode. also wants you to go read perl.req for details. the chill sibling to -strict. 🌸
• -v, --verbose — spill extra information about the work being done. like when your bestie narrates literally everything they're doing and you're just nodding along. 💬
• -d, --debug — turn on debugging output. and heads up, queen: this one implies the --verbose option. so you don't get to have debug without the chattiness. they're a package deal. 💀

quick vibe check: both -strict and -relaxed point you at perl.req for the actual details, fr fr. that's where the lore lives.

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🦋 AUTHOR 🦋

written by Alexey Tourbin <at@altlinux.org>. shoutout to the icon who built this. 🫡💖

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🎀 COPYING 🎀

copyright (c) 2004, 2006 Alexey Tourbin, ALT Linux Team.

this is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. slay, honestly. 🏳️🌈

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🌈 SEE ALSO 🌈

go read these next, bestie, they're all part of the same friend group:

• B
• B::Deparse
• Module::Info
• Module::ScanDeps
• perl.req

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and that's the whole page!! 💖✨🎀🦋🌸💅🫶👑🌈⭐💜

this little lovie shipped as part of perl v5.42.3, dated 2026-08-19, and it lives in the manual as B::PerlReq(3pm) — mwah, no cap, go extract some dependencies. 😭💅