tesseract gem不會在Ruby中編譯

Question

總的noob在這裏，但無法弄清楚如何克服這個錯誤。我希望在運行Centos 6的Linux服務器上安裝並運行'tesseract'gem。結果似乎是-ltesseract應該位於/ usr/bin/ld中，但不是...

我已閱讀了其他tesseract/Ruby問題，但我認爲我沒有遇到任何這些問題。

任何幫助，非常感謝。

---

錯誤消息

g++ -shared -fPIC -o /tmp/.ffi-inline-0/3751549a49315e9a7703c6e20a39e587297ce8a8.so /tmp/.ffi-inline-0/3751549a49315e9a7703c6e20a39e587297ce8a8.cpp -ltesseract 2>>/tmp/.ffi-inline-0/3751549a49315e9a7703c6e20a39e587297ce8a8.log 
/usr/bin/ld: cannot find -ltesseract 
collect2: ld returned 1 exit status 

錯誤動作

[x@y ~]# irb 
1.9.3-p327 :001 > require 'tesseract' 
CompilationError: compile error: see logs at /tmp/.ffi-inline-0/3751549a49315e9a7703c6e20a39e587297ce8a8.log 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/ffi-inline-0.0.4.2/lib/ffi/inline/compilers/gcc.rb:31:in `compile' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/ffi-inline-0.0.4.2/lib/ffi/inline/builders/c.rb:114:in `shared_object' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/ffi-inline-0.0.4.2/lib/ffi/inline/builders.rb:90:in `block in build' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/ffi-inline-0.0.4.2/lib/ffi/inline/builders.rb:87:in `instance_eval' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/ffi-inline-0.0.4.2/lib/ffi/inline/builders.rb:87:in `build' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/ffi-inline-0.0.4.2/lib/ffi/inline/inline.rb:54:in `singleton_inline' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/ffi-inline-0.0.4.2/lib/ffi/inline/inline.rb:39:in `inline' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:34:in `<module:C>' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:31:in `<module:Tesseract>' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:29:in `<top (required)>' 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/tesseract-ocr-0.1.5/lib/tesseract/api.rb:26:in `<top (required)>' 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/tesseract-ocr-0.1.5/lib/tesseract-ocr.rb:35:in `<top (required)>' 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:36:in `require' 
     from /usr/local/rvm/gems/ruby-1.9.3-p327/gems/tesseract-ocr-0.1.5/lib/tesseract.rb:25:in `<top (required)>' 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:in `require' 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:60:in `rescue in require' 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/lib/ruby/site_ruby/1.9.1/rubygems/custom_require.rb:35:in `require' 
     from (irb):1 
     from /usr/local/rvm/rubies/ruby-1.9.3-p327/bin/irb:13:in `<main>'1.9.3-p327 

寶石版本

[x@y ~]# gem list 
[...] 
tesseract-ocr (0.1.5) 
[...] 

版本的GCC

[x@y ~]# gcc --version 
gcc (GCC) 4.4.6 20120305 (Red Hat 4.4.6-4) 
[...] 

OS

[x@y ~]# cat /etc/*release* 
CentOS release 6.3 (Final) 

的Ruby版本

[x@y ~]# ruby -v 
ruby 1.9.3p327 (2012-11-10 revision 37606) [x86_64-linux] 

RVM版本（以防萬一）

[x@y ~]# rvm -v 
rvm 1.17.2 (stable) by Wayne E. Seguin <wayneeseguin@gmail.com>, Michal Papis <mpapis@gmail.com> [https://rvm.io/] 

Answer 1

嘗試在您的系統中安裝tesseract軟件包。 我認爲這樣yum install tesseract