# Error installing gtk2 under rvm (again.) **URL:** \ **Category:** Ruby-Gnome 2\ **Created:** [July 28, 2011, 2:15pm UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017 "2011-07-28T14:15:37Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![dubstep](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/cdc98d/32.png) [@dubstep](https://www.ruby-forum.com/u/dubstep)\ **Post date:** [July 28, 2011, 2:15pm UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017/1 "2011-07-28T14:15:37Z")
hey folks, well, i’m eager to try out gtk2 1.0, but i still get errors trying to install - not sure what the problem is. here’s what i get with a fresh install of 1.9.2 patch 180 under rvm on ubuntu 10.4 lucid: jk@jk-laptop:~$ rvm use 1.9.2 Using /home/jk/.rvm/gems/ruby-1.9.2-p180 jk@jk-laptop:~$ gem install -r gtk2 Fetching: glib2-1.0.0.gem (100%) Building native extensions. This could take a while… Fetching: atk-1.0.0.gem (100%) Building native extensions. This could take a while… Fetching: pango-1.0.0.gem (100%) Building native extensions. This could take a while… Fetching: gdk\_pixbuf2-1.0.0.gem (100%) Building native extensions. This could take a while… Fetching: gtk2-1.0.0.gem (100%) Building native extensions. This could take a while… Successfully installed glib2-1.0.0 Successfully installed atk-1.0.0 Successfully installed pango-1.0.0 Successfully installed gdk\_pixbuf2-1.0.0 Successfully installed gtk2-1.0.0 5 gems installed Installing ri documentation for glib2-1.0.0… Installing ri documentation for atk-1.0.0… Installing ri documentation for pango-1.0.0… Installing ri documentation for gdk\_pixbuf2-1.0.0… Installing ri documentation for gtk2-1.0.0… Installing RDoc documentation for glib2-1.0.0… Installing RDoc documentation for atk-1.0.0… Installing RDoc documentation for pango-1.0.0… Installing RDoc documentation for gdk\_pixbuf2-1.0.0… Installing RDoc documentation for gtk2-1.0.0… jk@jk-laptop:~$ irb ruby-1.9.2-p180 :001 \> require ‘gtk2’ NameError: uninitialized constant Gdk::Drawable from /home/jk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site\_ruby/1.9.1/rubygems/custom\_require.rb:36:in `require' from /home/jk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in`require’ from /home/jk/.rvm/gems/ruby-1.9.2-p180/gems/gtk2-1.0.0/lib/gtk2/base.rb:25:in `rescue in ' from /home/jk/.rvm/gems/ruby-1.9.2-p180/gems/gtk2-1.0.0/lib/gtk2/base.rb:21:in`\’ from /home/jk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site\_ruby/1.9.1/rubygems/custom\_require.rb:36:in `require' from /home/jk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in`require’ from /home/jk/.rvm/gems/ruby-1.9.2-p180/gems/gtk2-1.0.0/lib/gtk2.rb:11:in `' from /home/jk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:58:in`require’ from /home/jk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site\_ruby/1.9.1/rubygems/custom\_require.rb:58:in `rescue in require' from /home/jk/.rvm/rubies/ruby-1.9.2-p180/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in`require’ from (irb):1 from /home/jk/.rvm/rubies/ruby-1.9.2-p180/bin/irb:16:in `’ any ideas what the problem is? i’d really like to try it out, but i can’t seem to install gtk except version 0.19.3 through my package manager. thanks, -j ---
**Author:** ![lljk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/a9a28c/32.png) [@lljk](https://www.ruby-forum.com/u/lljk)\ **Post date:** [August 1, 2011, 11:58am UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017/2 "2011-08-01T11:58:27Z")
jake kaiden wrote in post #1013535: > any ideas what the problem is? i’d really like to try it out, but i > can’t seem to install gtk except version 0.19.3 through my package > manager. Take a look here for some dependencies : [http://packages.ubunut.com/it/natty/libgtk2-ruby1.8](http://packages.ubunut.com/it/natty/libgtk2-ruby1.8) When I install gtk2 from a fresh rvm 1.9.2-p290, it also pulls out cairo. I don’t know why yours don’t. Already installed ? Simon ---
**Author:** ![lljk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/a9a28c/32.png) [@lljk](https://www.ruby-forum.com/u/lljk)\ **Post date:** [August 1, 2011, 1:17pm UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017/3 "2011-08-01T13:17:07Z")
hi Simon, thanks for the input. must have had cairo already installed… i wiped out all the gems and started from scratch - gems install just fine, but i get an error installing the ri documentation for cairo: $ rvm use 1.9.2 Using /home/jk/.rvm/gems/ruby-1.9.2-p180 $ gem install -r gtk2 Fetching: pkg-config-1.1.2.gem (100%) Fetching: glib2-1.0.0.gem (100%) Building native extensions. This could take a while… Fetching: atk-1.0.0.gem (100%) Building native extensions. This could take a while… Fetching: cairo-1.10.0.gem (100%) Building native extensions. This could take a while… Fetching: pango-1.0.0.gem (100%) Building native extensions. This could take a while… Fetching: gdk\_pixbuf2-1.0.0.gem (100%) Building native extensions. This could take a while… Fetching: gtk2-1.0.0.gem (100%) Building native extensions. This could take a while… Successfully installed pkg-config-1.1.2 Successfully installed glib2-1.0.0 Successfully installed atk-1.0.0 Successfully installed cairo-1.10.0 Successfully installed pango-1.0.0 Successfully installed gdk\_pixbuf2-1.0.0 Successfully installed gtk2-1.0.0 7 gems installed Installing ri documentation for pkg-config-1.1.2… Installing ri documentation for glib2-1.0.0… Installing ri documentation for atk-1.0.0… Installing ri documentation for cairo-1.10.0… RDoc::Parser::Ruby failure around line 131 of lib/cairo.rb Before reporting this, could you check that the file you’re documenting compiles cleanly–RDoc is not a full Ruby parser, and gets confused easily if fed invalid programs. The internal error was: (RDoc::Error) Name or symbol expected (got #RDoc::RubyToken::TkSTAR:0xa09801c) ERROR: While generating documentation for cairo-1.10.0 … MESSAGE: Name or symbol expected (got #RDoc::RubyToken::TkSTAR:0xa09801c) … RDOC args: --ri --op /home/jk/.rvm/gems/ruby-1.9.2-p180/doc/cairo-1.10.0/ri --main README.txt lib --title cairo-1.10.0 Documentation --quiet i get the same error as in the above post when requiring gtk2 - NameError: uninitialized constant Gdk::Drawable frustrating… - j ---
**Author:** ![lljk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/a9a28c/32.png) [@lljk](https://www.ruby-forum.com/u/lljk)\ **Post date:** [August 2, 2011, 2:00pm UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017/4 "2011-08-02T14:00:09Z")
Vincent C. wrote in post #1014357: > Hi. > > Can you check which files were loaded after requiring gtk2? > Maybe the so file is loaded instead of the rb one. hi Vincent - not sure how to go about checking that… this line of the error: /home/jk/.rvm/gems/ruby-1.9.2-p180/gems/gtk2-1.0.0/lib/gtk2.rb:11:in `\’ …leads me to the directory indicated, where i find both a gtk2.rb file, and gtk2.so - am i on the right track? if so, any ideas about how i can check which is being loaded? thanks, - j ---
**Author:** ![lljk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/a9a28c/32.png) [@lljk](https://www.ruby-forum.com/u/lljk)\ **Post date:** [August 2, 2011, 3:23pm UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017/5 "2011-08-02T15:23:10Z")
2011/8/2 jake kaiden [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > Vincent C. wrote in post #1014357: > > > Hi. > > > > Can you check which files were loaded after requiring gtk2? > > Maybe the so file is loaded instead of the rb one. > > hi Vincent - > > not sure how to go about checking that… By looking at the $" variable. > ruby-gnome2-devel-en mailing list > [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) > [https://lists.sourceforge.net/lists/listinfo/ruby-gnome2-devel-en](https://lists.sourceforge.net/lists/listinfo/ruby-gnome2-devel-en) – Vincent C. ---
**Author:** ![lljk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/a9a28c/32.png) [@lljk](https://www.ruby-forum.com/u/lljk)\ **Post date:** [August 2, 2011, 8:08am UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017/6 "2011-08-02T08:08:53Z")
Hi. Can you check which files were loaded after requiring gtk2? Maybe the so file is loaded instead of the rb one. * * * Vincent C. ---
**Author:** ![lljk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/a9a28c/32.png) [@lljk](https://www.ruby-forum.com/u/lljk)\ **Post date:** [August 2, 2011, 4:49pm UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017/7 "2011-08-02T16:49:13Z")
I do not have ruby at the moment so I cannot help you… But I am guessing that you should look at gtk2/base.rb file. – Vincent C. ---
**Author:** ![lljk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/a9a28c/32.png) [@lljk](https://www.ruby-forum.com/u/lljk)\ **Post date:** [August 2, 2011, 3:48pm UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017/8 "2011-08-02T15:48:39Z")
hi, here’s a list of what i think are the pertinent files loaded after requiring gtk2: … … “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/glib2-1.0.0/lib/glib2.so” “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/glib2-1.0.0/lib/glib2.rb” “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/atk-1.0.0/lib/atk.so” “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/atk-1.0.0/lib/atk.rb” …cairo stuff “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/cairo-1.10.0/lib/cairo.so” …cairo stuff “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/cairo-1.10.0/lib/cairo.rb” “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/pango-1.0.0/lib/pango.so” “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/pango-1.0.0/lib/pango.rb” “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/gdk\_pixbuf2-1.0.0/lib/gdk\_pixbuf2.so” “/home/jk/.rvm/gems/ruby-1.9.2-p180/gems/gdk\_pixbuf2-1.0.0/lib/gdk\_pixbuf2.rb” i don’t see anything loaded for gtk2 (neither .rb, nor .so,) though my gem list shows it as installed. i imagine this is because the require failed, and gtk2 was never loaded? thanks again, - j ---
**Author:** ![lljk](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/l/a9a28c/32.png) [@lljk](https://www.ruby-forum.com/u/lljk)\ **Post date:** [August 4, 2011, 2:10pm UTC](https://www.ruby-forum.com/t/error-installing-gtk2-under-rvm-again/210017/9 "2011-08-04T14:10:49Z")
Vincent C. wrote in post #1014500: > … I am guessing that you should look at gtk2/base.rb file. thanks for the tip - when i looked at the base.rb file, line 25 was “require ‘gtk2.so’,” which i changed to “require ‘gtk2.rb’…” i now get this error when i require ‘gtk2’ in irb: ruby-1.9.2-p180 :001 \> require ‘gtk2’ NoMethodError: undefined method `cairo_available?' for Gdk:Module from /home/jk/.rvm/gems/ruby-1.9.2-p180/gems/gtk2-1.0.0/lib/gtk2/base.rb:32:in `\’ … a look at Gdk’s methods with “Gdk.methods.sort.each{|m| p m}” shows no #cairo\_available? method, nor anything similar. at least it’s a different error… is this progress? any ideas about what’s going on here? thanks again, j