uninitialized constant Spring::SID::DL

[teoljungberg]

Spring version: 1.12
Ruby version 1.9.3-p545

What more info can I provide?

/Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/sid.rb:17:in `fiddle_func': uninitialized constant Spring::SID::DL (NameError)
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/sid.rb:30:in `sid'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/sid.rb:39:in `pgid'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/server.rb:78:in `set_pgid'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/server.rb:34:in `boot'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/server.rb:14:in `boot'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/client/run.rb:36:in `block in boot_server'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/client/run.rb:34:in `fork'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/client/run.rb:34:in `boot_server'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/client/run.rb:18:in `call'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/client/command.rb:7:in `call'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/client/rails.rb:23:in `call'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/client/command.rb:7:in `call'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/lib/spring/client.rb:26:in `run'
        from /Users/teo/.rbenv/versions/1.9.3-p545/lib/ruby/gems/1.9.1/gems/spring-1.1.2/bin/spring:48:in `<top (required)>'
        from /Users/teo/.rbenv/versions/1.9.3-p545/bin/spring:23:in `load'
        from /Users/teo/.rbenv/versions/1.9.3-p545/bin/spring:23:in `<main>'

[CyborgMaster]

I just had a coworker set up a new mac and he ran into this error. It happened when he compiled ruby (via RVM) using clang, but didn't happen when ruby was compiled with apple-gcc42. Does spring support compilation with clang?

[benmoss]

I am getting this too, on spring 1.1.1

[tombeynon]

Same. This only started occurring after upgrading to Ruby 1.9.3-p545

[teoljungberg]

I have the same issue on Ruby 1.9.3-p484 which has worked for me in the past

[viniciusoyama]

Same.
OSX 10.9, Ruby 1.9.3-p545 compiled with RVM and CLANG.
Spring 1.1.2

[taiki-t]

Same. In my case changing the compiler to apple-gcc42 from clang solved the problem as CyborgMaster said. Thank you.

OSX 10.9
Ruby 1.9.3-p484
rbenv

[viniciusoyama]

Im my case changing the compiler to gcc46 solved the problem too. The problem is that when you compile using CLAN it doens't include the dynamic libraries. So when you try to use them with: "Spring::SID::DL" it doens't work.

[pigoz]

The problem is fiddle_func in sid.rb is called regardless of the fact that DL is defined, while it should probably shell out if it's not (instead of crashing). I can prepare a patch if that's ok.

[jonleighton]

Does require 'dl' (in irb) work for any of you folks? I'm wondering if it's just a missing require.

I think @pigoz's suggestion is good either way though - please do prepare a patch.

[viniciusoyama]

@jonleighton
It works when I compile the ruby 1.9.3 using gcc46. But when I use CLANG it doesn't work.
If you are using OSX you can instal using homebrew:
brew install gcc46
(wait 2 or 3 hours haha)
and then try
rvm reinstall 1.9.3

[teoljungberg]

@jonleighton require'ing dl didn't help, it throws an error in irb

[pigoz]

See above commit, I am a little unsure if this actually solves the problem completely, since the code that shells out actually returns always 0 in my irb. Here's an example with Ruby 2:

irb(main):004:0> Process.getsid
=> 319
irb(main):005:0> `ps -p #{Process.pid} -o sess=`.to_i
=> 0

This is probably an OS X only issue though.

[caius]

I've just worked around this locally by recompiling my ruby using a patch from the FreeBSD lists, changing the compile flags for dl if clang is being used.

Used with ruby-install and my spring is happily bouncing along again (I put the patch in a gist to use: https://gist.github.com/caius/10452604):

$ ruby-install -p https://gist.githubusercontent.com/caius/10452604/raw/acd421a8461f4d776a8f752663db19e321f850e0/ext_dl_extconf_rb.patch ruby 1.9.3-p545
# <snip>
>>> Successfully installed ruby 1.9.3-p545 into /Users/caius/.rubies/ruby-1.9.3-p545

$ spring status
Spring is not running.

$ spring rails console
Loading development environment (Rails 3.2.16)
1.9.3 (main):0 > 

[caius]

@pigoz I'm also seeing the same behaviour from shelling out to ps to get the session id and it being zero. I see the same behaviour for other non-ruby processes on OS X too:

$ ps -p $(pgrep ssh-agent) -o sess=
     0