# RubyObjC rake failed **URL:** \ **Category:** Ruby\ **Created:** [April 7, 2007, 7:55am UTC](https://www.ruby-forum.com/t/rubyobjc-rake-failed/91350 "2007-04-07T07:55:57Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [April 7, 2007, 7:55am UTC](https://www.ruby-forum.com/t/rubyobjc-rake-failed/91350/1 "2007-04-07T07:55:57Z")
Hey all ! after downloading and installing “RubyObjC. A Ruby/Objective-C bridge.” [http://www.rubyobjc.com/](http://www.rubyobjc.com/) i did the simplest try-out “myapp” and rake failed, see trace below : * * * * * * ## ~/work/RubyObjC/myapp%\> rake --trace (in /Users/yt/work/RubyObjC/myapp) \*\* Invoke default (first\_time) \*\* Invoke app (first\_time) \*\* Invoke executable (first\_time) \*\* Invoke RubyObjC.app/Contents/MacOS (first\_time, not\_needed) \*\* Invoke RubyObjC.app/Contents/MacOS/RubyObjC (first\_time) \*\* Invoke /opt/local/lib/ruby/gems/1.8/gems/RubyObjC-0.3.0/lib/rake/…/rubyobjcapp (first\_time, not\_needed) \*\* Execute RubyObjC.app/Contents/MacOS/RubyObjC rake aborted! wrong number of arguments (3 for 2) /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:725:in `fu_check_options' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:725:in `sh’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:812:in `sh' /opt/local/lib/ruby/gems/1.8/gems/RubyObjC-0.3.0/lib/rake/cocoa.rb:103:i n `initialize’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `call' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `execute’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `each' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:387:in `execute’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:357:in `invoke' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `synchronize’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `invoke' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:364:in `invoke\_prerequisites’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `each' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `send’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `each' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:363:in `invoke\_prerequisites’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:356:in `invoke' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `synchronize’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `invoke' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:364:in `invoke\_prerequisites’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `each' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `send’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `each' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:363:in `invoke\_prerequisites’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:356:in `invoke' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `synchronize’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `invoke' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:364:in `invoke\_prerequisites’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `each' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `send’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:999:in `each' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:363:in `invoke\_prerequisites’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:356:in `invoke' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `synchronize’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:350:in `invoke' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `each' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/bin/rake:7 /opt/local/bin/rake:16:in `load’ /opt/local/bin/rake:16 ~/work/RubyObjC/myapp%\> * * * i get about the same with one of the samples : * * * * * * ## ~/work/RubyObjC/samples/maildemo%\> rake --trace (in /Users/yt/work/RubyObjC/samples/maildemo) rake aborted! Don’t know how to build task ‘default’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1449:in `[]' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:455:in `[]’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `each’ /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/lib/rake.rb:1906:in `run' /opt/local/lib/ruby/gems/1.8/gems/rake-0.7.1/bin/rake:7 /opt/local/bin/rake:16:in `load’ /opt/local/bin/rake:16 * * * as far as i understand this is due to rake not RubyObjC. i think i should upgrade rake ??? my ruby version is : ruby 1.8.6 (2007-03-13 patchlevel 0) [powerpc-darwin8.9.0] Mac OS X 10.4.9 ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [April 7, 2007, 8:15am UTC](https://www.ruby-forum.com/t/rubyobjc-rake-failed/91350/2 "2007-04-07T08:15:58Z")
Une Bévue wrote: > as far as i understand this is due to rake not RubyObjC. > > i think i should upgrade rake ??? I think, you should take a look into the documentation: > **[rubyobjc.com](https://www.rubyobjc.com/)** > > Ruby Documentation Project. Documents, links, help, books for the Ruby programming language. Blogtari! powered web site. rake run seems to do the magic with this thing. I can’t confirm this, as I don’t own a Mac. – Phillip “CynicalRyan” Gawlowski [http://cynicalryan.110mb.com/](http://cynicalryan.110mb.com/) Rule of Open-Source Programming #4: If you don’t work on your project, chances are that no one will. ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [April 7, 2007, 10:41am UTC](https://www.ruby-forum.com/t/rubyobjc-rake-failed/91350/3 "2007-04-07T10:41:11Z")
Phillip G. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > I think, you should take a look into the documentation: > [rubyobjc.com](http://www.rubyobjc.com/doc/files/USAGE.html) yes thanks, i did follow that : > Rake Tasks > > To build the application, type “rake”; to run it, use “rake run”. > rake run seems to do the magic with this thing. I can’t confirm this, as > I don’t own a Mac. … ---
**Author:** ![unknown](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/u/4bbf92/32.png) [@unknown](https://www.ruby-forum.com/u/unknown)\ **Post date:** [April 8, 2007, 9:46pm UTC](https://www.ruby-forum.com/t/rubyobjc-rake-failed/91350/4 "2007-04-08T21:46:39Z")
unknown wrote: > Phillip G. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > > I think, you should take a look into the documentation: > > [rubyobjc.com](http://www.rubyobjc.com/doc/files/USAGE.html) > > yes thanks, i did follow that : > > > Rake Tasks > > > > To build the application, type “rake”; to run it, use “rake run”. > > > rake run seems to do the magic with this thing. I can’t confirm this, as > > I don’t own a Mac. > > … As a side note, RubyObjc stems from RubyCocoa. RubyCocoa is completely free, RubyObjC is somewhat free - no commercial use. I was confused by the two at first… RubyObjC just adds a few more tools to the arsenol… like rake tasks, etc…