Ruby 2.0.0-p0 issue - 'undefined symbol: rb_infinity'

[dwbutler]

Hi,

I'm having a strange issue using Oj in Ruby 2.0.0-p0. This seems to affect multiple versions of Oj including the most recent (2.0.7). What's strange is that we only encounter this error on a specific CentOS build. It works fine everywhere else we've tried - MacOSX, and Amazon EC2.

Here is the error we are getting when launching our Rails app:

undefined symbol: rb_infinity - /var/www/app/shared/bundle/ruby/2.0.0/gems/oj-2.0.7/ext/oj/oj.so (LoadError)
    from /var/www/app/shared/bundle/ruby/2.0.0/gems/backports-2.6.7/lib/backports/tools.rb:314:in `require_with_backports'
    from /var/www/app/shared/bundle/ruby/2.0.0/gems/oj-2.0.7/lib/oj.rb:33:in `<top (required)>'

And here are some details of our OS:

cat /proc/version
Linux version 2.6.18-238.12.1.el5 (mockbuild@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-50)) #1 SMP Tue May 31 13:22:04 EDT 2011

uname -a
Linux xxx 2.6.18-238.12.1.el5 #1 SMP Tue May 31 13:22:04 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux

We installed Ruby 2.0.0 using RVM. Could the Ruby build itself be misconfigured?

[portertech]

Found the same issue "undefined symbol: rb_infinity"

Ruby built w/ https://github.com/sensu/sensu-build/blob/master/recipes/ruby.rake

[portertech]

@ohler55 Any ideas? Seems that CentOS is problematic https://github.com/ohler55/oj/blob/master/ext/oj/extconf.rb#L38

[ohler55]

Apparently CentOS has some issues with math.h and ruby.h that revolve around INFINITY. I checked in something I think will work around the problem. Please pull and see if it works with CentOS. If it works I will do a release.

[portertech]

Ok, great, trying it on 5.7 now.

[portertech]

irb(main):001:0> require 'oj'
LoadError: /opt/sensu/embedded/lib/ruby/gems/2.0.0/gems/oj-2.0.9a1/ext/oj/oj.so: undefined symbol: rb_infinity - /opt/sensu/embedded/lib/ruby/gems/2.0.0/gems/oj-2.0.9a1/ext/oj/oj.so
from /opt/sensu/embedded/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:in require' from /opt/sensu/embedded/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:45:inrequire'
from /opt/sensu/embedded/lib/ruby/gems/2.0.0/gems/oj-2.0.9a1/lib/oj.rb:33:in <top (required)>' from /opt/sensu/embedded/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:110:inrequire'
from /opt/sensu/embedded/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:110:in rescue in require' from /opt/sensu/embedded/lib/ruby/2.0.0/rubygems/core_ext/kernel_require.rb:35:inrequire'
from (irb):1
from /opt/sensu/embedded/bin/irb:12:in `

'

[portertech]

@ohler55 no luck :(

[portertech]

@ohler55 seems that dump.c also uses INFINITY

[ohler55]

Okay, fixed it.

[portertech]

/opt/sensu/embedded/bin/irb
irb(main):001:0> require 'oj'
=> true
irb(main):002:0> Oj.load('{"foo": "bar"}')
=> {"foo"=>"bar"}

[portertech]

@ohler55 That did it 👍

[portertech]

@ohler55 I'm looking forward to the new release, thank you!

[ohler55]

Just completed the release. Thanks for the help with the problem.

[dwbutler]

Thanks! I'll try it tomorrow.

[dwbutler]

It worked! Thanks so much!