On OpenBSD/ad 7.4 pg_query generates the error Unable to resolve symbol - Init_pg_query

[vtamara]

My platform is:

% uname -a
OpenBSD mi.mi.org 7.4 APRENDIENDODEJESUS.MP#7 amd64
% ruby -v
ruby 3.3.0 (2023-12-25 revision 5124f9ac75) [x86_64-openbsd]
% psql --version
psql (PostgreSQL) 16.2

I installed with:

% doas gem install pg_query
Fetching google-protobuf-4.26.1.gem
Fetching pg_query-5.1.0.gem
Building native extensions. This could take a while...
Successfully installed google-protobuf-4.26.1
Building native extensions. This could take a while...
Successfully installed pg_query-5.1.0
Parsing documentation for google-protobuf-4.26.1
Installing ri documentation for google-protobuf-4.26.1
Parsing documentation for pg_query-5.1.0
Installing ri documentation for pg_query-5.1.0
Done installing documentation for google-protobuf, pg_query after 2 seconds
2 gems installed

The minimal example I'm using in a file e.rb is:

require "pg_query"
puts PgQuery.parse("SELECT 1").inspect 

Running with ruby e.rb produces:

<internal:/usr/local/lib/ruby/site_ruby/3.3/rubygems/core_ext/kernel_require.rb>:136:in `require': Unable to resolve symbol - Init_pg_query (LoadError)
        from <internal:/usr/local/lib/ruby/site_ruby/3.3/rubygems/core_ext/kernel_require.rb>:136:in `require'
        from /usr/local/lib/ruby/gems/3.3/gems/pg_query-5.1.0/lib/pg_query.rb:7:in `<top (required)>'
        from <internal:/usr/local/lib/ruby/site_ruby/3.3/rubygems/core_ext/kernel_require.rb>:141:in `require'
        from <internal:/usr/local/lib/ruby/site_ruby/3.3/rubygems/core_ext/kernel_require.rb>:141:in `rescue in require'
        from <internal:/usr/local/lib/ruby/site_ruby/3.3/rubygems/core_ext/kernel_require.rb>:135:in `require'
        from e.rb:1:in `<main>'
<internal:/usr/local/lib/ruby/site_ruby/3.3/rubygems/core_ext/kernel_require.rb>:136:in `require': cannot load such file -- pg_query (LoadError)
        from <internal:/usr/local/lib/ruby/site_ruby/3.3/rubygems/core_ext/kernel_require.rb>:136:in `require'
        from e.rb:1:in `<main>'

Any suggestions how to diagnose better or how to solve?