# Attachment\_fu and ImageScience - problem with RubyInline gem **URL:** \ **Category:** Rails\ **Created:** [January 5, 2008, 8:09am UTC](https://www.ruby-forum.com/t/attachment-fu-and-imagescience-problem-with-rubyinline-gem/125091 "2008-01-05T08:09:53Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [January 5, 2008, 8:09am UTC](https://www.ruby-forum.com/t/attachment-fu-and-imagescience-problem-with-rubyinline-gem/125091/1 "2008-01-05T08:09:53Z")
Hi, I am experiencing the following error when I configure attachment\_fu to use ImageScience. I have downloaded and compiled FreeImage, and installed the ImageScience (1.1.3) gem (which installs the RubyInline gem 3.6.6). Any advice or pointers to other help would be very much appreciated. I have spent several hours trying to fix this with no success. Thanks! Error output: SystemExit (ERROR: Can’t find header dir for ruby. Exiting…): /usr/lib/ruby/gems/1.8/gems/RubyInline-3.6.5/lib/inline.rb:385:in `abort' /usr/lib/ruby/gems/1.8/gems/RubyInline-3.6.5/lib/inline.rb:385:in`build’ /usr/lib/ruby/gems/1.8/gems/RubyInline-3.6.5/lib/inline.rb:679:in `inline' /usr/lib/ruby/gems/1.8/gems/image_science-1.1.3/lib/ image_science.rb:84 /usr/local/lib/site_ruby/1.8/rubygems/custom_require.rb:32:in`gem\_original\_require’ /usr/local/lib/site\_ruby/1.8/rubygems/custom\_require.rb:32:in `require' /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active_support/ dependencies.rb:495:in`require’ /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active\_support/ dependencies.rb:342:in `new_constants_in' /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active_support/ dependencies.rb:495:in`require’ /home/leelon/workspace/Pingee/vendor/plugins/attachment\_fu/lib/ technoweenie/attachment\_fu/processors/image\_science\_processor.rb:1 /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active\_support/ dependencies.rb:203:in `load_without_new_constant_marking' /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active_support/ dependencies.rb:203:in`load\_file’ /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active\_support/ dependencies.rb:342:in `new_constants_in' /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active_support/ dependencies.rb:202:in`load\_file’ /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active\_support/ dependencies.rb:94:in `require_or_load' /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active_support/ dependencies.rb:248:in`load\_missing\_constant’ /usr/lib/ruby/gems/1.8/gems/activesupport-1.4.4/lib/active\_support/ dependencies.rb:452:in `const_missing' /home/leelon/workspace/Pingee/vendor/plugins/attachment_fu/lib/ technoweenie/attachment_fu.rb:87:in`const\_get’ /home/leelon/workspace/Pingee/vendor/plugins/attachment\_fu/lib/ technoweenie/attachment\_fu.rb:87:in `has\_attachment’ /home/leelon/workspace/Pingee/app/models/picture\_attachment.rb:6 … ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [January 5, 2008, 11:05am UTC](https://www.ruby-forum.com/t/attachment-fu-and-imagescience-problem-with-rubyinline-gem/125091/2 "2008-01-05T11:05:57Z")
removed\_email\_address@domain.invalid wrote: > Hi, > > I am experiencing the following error when I configure attachment\_fu > to use ImageScience. > > I have downloaded and compiled FreeImage, and installed the > ImageScience (1.1.3) gem (which installs the RubyInline gem 3.6.6). > > Any advice or pointers to other help would be very much appreciated. I > have spent several hours trying to fix this with no success. > > Thanks! I followed the same steps and am getting the exact same error. Its very frustrating. ---
**Author:** ![casper\_the\_ghost](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/c/58956e/32.png) [@casper\_the\_ghost](https://www.ruby-forum.com/u/casper_the_ghost)\ **Post date:** [January 7, 2008, 12:22pm UTC](https://www.ruby-forum.com/t/attachment-fu-and-imagescience-problem-with-rubyinline-gem/125091/3 "2008-01-07T12:22:28Z")
Gary and others, I finally found the solution – thanks to the great book “Ruby Cookbook” – and Image Science is now working perfectly 🙂 I was missing a Ruby library “ruby1.8-dev” (header files for compiling extension modules for the Ruby 1.8). It can be easily installed through your distro’s package manager tool or using: sudo apt-get install ruby1.8-dev Note I am running “ruby 1.8.6 (2007-06-07 patchlevel 36) [x86\_64- linux]” RubyInline requires this package. I hope this solves your problem too.