Ubuntu 24.04.2 undefined reference to `MD4'

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
35/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Stale
Tech stack
c, ruby
Domain
build-system

Research direction

Start by reproducing the rugged gem link failure on Ubuntu 24.04.2 with the reported OpenSSL 3.0.13 and Ruby 3.2.8 versions, using the generated lib/rugged/rugged.so as the entry point. Inspect how the native extension is linked and verify that the undefined MD4 reference is resolved and the gem loads successfully.

Written by the indexing model from the issue text.

Description

Hello,

I have successfully built and install rugged on Ubuntu 24.04.2 (in the OpenVox Puppet Ruby). However, there seems to be a linking issue with the OpenSSL MD4 function:

# ld /opt/puppetlabs/puppet/lib/ruby/gems/3.2.0/gems/rugged-1.9.0/lib/rugged/rugged.so
ld: warning: cannot find entry symbol _start; not setting start address
ld: /opt/puppetlabs/puppet/lib/ruby/gems/3.2.0/gems/rugged-1.9.0/lib/rugged/rugged.so: undefined reference to `MD4'

This causes the gem not to work.

Versions:

# openssl version
OpenSSL 3.0.13 30 Jan 2024 (Library: OpenSSL 3.0.13 30 Jan 2024)
# /opt/puppetlabs/puppet/bin/ruby --version
ruby 3.2.8 (2025-03-26 revision 13f495dc2c) [x86_64-linux]
# This is maybe not relevant since I am not using the system libgit2
# apt show libgit2-dev
Package: libgit2-dev
Version: 1.7.2+ds-1ubuntu3
...
Dominant language
C
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