# Any JRUBY programmers out there? Problems specifying RUBYLIB **URL:** \ **Category:** Ruby\ **Created:** [May 11, 2007, 5:08pm UTC](https://www.ruby-forum.com/t/any-jruby-programmers-out-there-problems-specifying-rubylib/103914 "2007-05-11T17:08:43Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![ronaldfischer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/67e7ee/32.png) [@ronaldfischer](https://www.ruby-forum.com/u/ronaldfischer)\ **Post date:** [May 11, 2007, 5:08pm UTC](https://www.ruby-forum.com/t/any-jruby-programmers-out-there-problems-specifying-rubylib/103914/1 "2007-05-11T17:08:43Z")
I would like to run jruby on either pure Windows, or Cygwin. This works fine as long as I only use the standard library which comes with jruby. I can’t make it, however, search additional libraries I have put in non-standard places. For example, I have a Ruby module placed in …\SOMEPATH\lib\net\ssh, which I require from my Ruby program by require ‘net/ssh’ I guess I have now to set my RUBYLIB environment variable, so that jruby can resolve the require statement. I tried several possible variations of how to set RUBYLIB, but always get a “no such file to load”. For example under cygwin (bash shell), even a cd SOMEPATH # go to the directory containing the library RUBYLIB=. jruby MYPROGRAM.rb or RUBYLIB=lib jruby MYPROGRAM.rb does not find the library. And in a Windows command shell, set RUBYLIB=…\SOMEPATH\lib\net\ssh or, respectively, set RUBYLIB=…\SOMEPATH\lib\net\ssh\lib doesn’t make jruby find the library either. I would already be glad finding a solution for either Windows or Cygwin, but of course being able to get it running under both would be even better. I understand that doing it for Cygwin is trickier though, because Jruby is based on Java and hence doesn’t understand Cygwin pathes. Ronald ---
**Author:** ![ronaldfischer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/67e7ee/32.png) [@ronaldfischer](https://www.ruby-forum.com/u/ronaldfischer)\ **Post date:** [May 11, 2007, 5:29pm UTC](https://www.ruby-forum.com/t/any-jruby-programmers-out-there-problems-specifying-rubylib/103914/2 "2007-05-11T17:29:46Z")
Ronald F. wrote: > or > > RUBYLIB=lib jruby MYPROGRAM.rb Hi, Ok, what you should do here is not use RUBYLIB at all. JRuby does understand RUBYLIB, but it won’t do what you expect. Instead, use the -I parameter to JRuby: jruby -I lib MYPROGRAM.rb This will work just fine on both Win32 and Cygwin. Cheers – Ola B. ([http://ola-bini.blogspot.com](http://ola-bini.blogspot.com)) JvYAML, RbYAML, JRuby and Jatha contributor System Developer, Karolinska Institutet ([http://www.ki.se](http://www.ki.se)) OLogix Consulting ([http://www.ologix.com](http://www.ologix.com)) “Yields falsehood when quined” yields falsehood when quined. ---
**Author:** ![ronaldfischer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/67e7ee/32.png) [@ronaldfischer](https://www.ruby-forum.com/u/ronaldfischer)\ **Post date:** [May 11, 2007, 5:56pm UTC](https://www.ruby-forum.com/t/any-jruby-programmers-out-there-problems-specifying-rubylib/103914/3 "2007-05-11T17:56:49Z")
“Ronald F.” [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) writes: > I guess I have now to set my RUBYLIB environment variable, so that > jruby can resolve the require statement. I tried several possible > variations of how to set RUBYLIB, but always get a “no such file to > load”. Which version of jruby are you using? This is something that is supposedly fixed in 1.0RC1. (see [http://jira.codehaus.org/browse/JRUBY-79](http://jira.codehaus.org/browse/JRUBY-79) and [http://dist.codehaus.org/jruby/](http://dist.codehaus.org/jruby/) ) In earlier versions than that, you can add a directory by setting the java system property jruby.lib. Note that this is not an environmental variable that you set, but something you set in the java environment before you call out to jruby. (My context with jruby is in using it as a scripting engine in some larger java program; I don’t use it standalone myself. For standalone ruby, I have ruby.) ---
**Author:** ![ronaldfischer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/67e7ee/32.png) [@ronaldfischer](https://www.ruby-forum.com/u/ronaldfischer)\ **Post date:** [May 14, 2007, 10:43am UTC](https://www.ruby-forum.com/t/any-jruby-programmers-out-there-problems-specifying-rubylib/103914/4 "2007-05-14T10:43:29Z")
> Ok, what you should do here is not use RUBYLIB at all. JRuby does > understand RUBYLIB, but it won’t do what you expect. Instead, > use the -I > parameter to JRuby: > > jruby -I lib MYPROGRAM.rb > > This will work just fine on both Win32 and Cygwin. Thank you very much. Ronald ---
**Author:** ![ronaldfischer](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/r/67e7ee/32.png) [@ronaldfischer](https://www.ruby-forum.com/u/ronaldfischer)\ **Post date:** [May 16, 2007, 11:34pm UTC](https://www.ruby-forum.com/t/any-jruby-programmers-out-there-problems-specifying-rubylib/103914/5 "2007-05-16T23:34:20Z")
I currently use RUBYLIB in a similar way. It’s especially handy for one-off command-line scripts: .bashrc - export RUBYLIB=c:/cvs-main/db-building/scripts … ruby -e “require ‘lsml’; $p.parse{ |r| r.ids.each {|id| if id.type == ‘reg’ then puts id end}}” file.xml where the lsml library has a bunch of pre-canned tools set up. It would be a drag to have to specify -I … every time. The problem I ran into with jruby is that it doesn’t know about the cygwin mounts (/cygdrive/c/) and splits on “:” instead of “;” - which makes the c:/ notation problematic. (Incidentally, the cygwin ruby handles both ; and : in RUBYLIB) I posted a fix to jira - where it uses File.pathSeparator instead of :, and have been happy ever since. [http://jira.codehaus.org/browse/JRUBY-938](http://jira.codehaus.org/browse/JRUBY-938) Ola - I’m left curious as to what RUBYLIB is supposed to do, if not handle this case, and if so, is there another (perhaps more appropriate) way to do what I’m suggesting? Thanks, Scott Ronald F. wrote: > > Ok, what you should do here is not use RUBYLIB at all. JRuby does > > understand RUBYLIB, but it won’t do what you expect. Instead, > > use the -I > > parameter to JRuby: > > > > jruby -I lib MYPROGRAM.rb > > > > This will work just fine on both Win32 and Cygwin. > > Thank you very much. > > Ronald