Installing merb with jruby

I am having problems installing the merb gem with jruby:

==============
c:>jruby -S gem install merb
Building native extensions. This could take a while…
ERROR: Error installing merb:
ERROR: Failed to build gem native extension.

C:/lang/jruby-1.1.5/bin/jruby.bat extconf.rb install merb
C:/lang/jruby-1.1.5/lib/ruby/1.8/mkmf.rb:7: JRuby does not support
native extensions. Check
wiki.jruby.org for alternatives. (NotImplementedError)
from C:/lang/jruby-1.1.5/lib/ruby/1.8/mkmf.rb:21:in `require’
from extconf.rb:21

Gem files will remain installed in
C:/lang/jruby-1.1.5/lib/ruby/gems/1.8/gems/do_sqlite3-0.
9.6 for inspection.
Results logged to
C:/lang/jruby-1.1.5/lib/ruby/gems/1.8/gems/do_sqlite3-0.9.6/ext/gem_make.
out

Based on this blog entry:

http://weblogs.java.net/blog/arungupta/archive/2008/04/merb_on_jruby_1.html

it appears I should be able to install merb this way. Other than that I
couldn’t find much on running jruby and merb (or at least how to install
it).

Could someone point me in the right direction?

Thanks in advance,

Eric

Merb has been moving in and out of Jruby compatibility. Right now, the
Merb gem includes datamapper, which includes do_sqlite, which includes
native extensions. However, you don’t need that for merb programs. If
you run

gem install merb-core
gem install merb-more

that should work. At the very least, I know that merb-core is pure ruby,
and you can probably pick out the gems from merb-more that you want.

Eric Ching wrote:

native extensions. Check
out
Could someone point me in the right direction?

Thanks in advance,

Eric


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Thanks, I’ll it out.

I don’t even have MRI installed, JRuby is just too good. :wink:

One problem you’ll run into is this:

http://merb.lighthouseapp.com/projects/7433-merb/tickets/987-problems-with-templater-jruby-115-merb-10

There’s a workaround there involving a small change to the templater
gem, and another workaround would be to use MRI for generation. I’m
looking into the actual JRuby issue here:

http://jira.codehaus.org/browse/JRUBY-3131

But Yehuda agrees this probably should be fixed in templater, since it
doesn’t work in 1.9 either.

  • Charlie

Eric Ching wrote:

Merb gem includes datamapper, which includes do_sqlite, which includes

I am having problems installing the merb gem with jruby:
wiki.jruby.org for alternatives. (NotImplementedError)
out

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