fails building ruby 3.1.0

[noraj]

Description

Building MRI 3.1.0 fails

$ asdf install ruby 3.1.0
Downloading ruby-3.1.0.tar.gz...
-> https://cache.ruby-lang.org/pub/ruby/3.1/ruby-3.1.0.tar.gz
Installing ruby-3.1.0...

BUILD FAILED (Arch Linux using ruby-build 20211225)

Inspect or clean up the working tree at /tmp/ruby-build.20211226205225.15895.kKdnTA
Results logged to /tmp/ruby-build.20211226205225.15895.log

Last 10 log lines:
        LC_ALL =
        LC_CTYPE = fr_FR.UTF-8
        MFLAGS =
gcc (GCC) 11.1.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

./ruby: error while loading shared libraries: libruby.so.3.1: cannot open shared object file: No such file or directory
make: *** [uncommon.mk:1191: revision.tmp] Error 127

Here are the full build logs: http://ix.io/3JBg

Environment

$ asdf --version
v0.9.0-9ee24a3

$ openssl version                                                                                                                                                                                                                          
OpenSSL 1.1.1m  14 Dec 2021

$ gcc --version                                                                                                                                                                                                                            
gcc (GCC) 11.1.0

$ make --version                                                                                                                                                                                                                           
GNU Make 4.3

Related issues

• Upstream issue on ruby-build Ruby 3.1.0 fails to install on archlinux rbenv/ruby-build#1874 --> Upstream discussion Ruby 3.1.0 fails to install on archlinux rbenv/ruby-build#1875

[mpalmer]

Based on a comment on rbenv/ruby-build#1875, I've narrowed the cause of this specific problem down to being a problem when asdf is activated and the global version of ruby is system. In order words, these scenarios work fine:

• asdf not activated (that is, which ruby outputs /usr/bin/ruby), although you need to have put ~/.asdf/bin in your PATH manually otherwise a later install step fails
• asdf activated, with the asdf-global version of ruby set to an asdf-installed ruby version (eg asdf global ruby 2.7.4)
• asdf activated, with the version of ruby being used overridden with ASDF_RUBY_VERSION, eg ASDF_RUBY_VERSION=2.7.4 asdf install ruby 3.0.3

This scenario causes the problem described in the initial report:

• asdf activated, with the asdf-global version of ruby set to system

Hopefully this extra info helps someone to narrow down the cause of the problem.