正确安装了 tesseract-ocr gem(包括依赖项)。但是，当启动 rails server 时，出现以下编译错误。在此阶段我从未收到过编译错误，因此我将不胜感激。
server:brandlove n$ rails s
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/ffi-inline-0.0.4/lib/ffi/inline/compilers/gcc.rb:29:in `compile': compile error: see logs at /var/folders/hm/6n4h3d1s49b_pxt2m51gr39c0000gn/T/.ffi-inline-501/793babd774d7ac74de2eb789882efa735f45b30b.log (CompilationError)
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/ffi-inline-0.0.4/lib/ffi/inline/builders/c.rb:114:in `shared_object'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/ffi-inline-0.0.4/lib/ffi/inline/builders.rb:90:in `block in build'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/ffi-inline-0.0.4/lib/ffi/inline/builders.rb:87:in `instance_eval'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/ffi-inline-0.0.4/lib/ffi/inline/builders.rb:87:in `build'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/ffi-inline-0.0.4/lib/ffi/inline/inline.rb:54:in `singleton_inline'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/ffi-inline-0.0.4/lib/ffi/inline/inline.rb:39:in `inline'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:34:in `<module:C>'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:31:in `<module:Tesseract>'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:29:in `<top (required)>'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/api.rb:26:in `require'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/api.rb:26:in `<top (required)>'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract-ocr.rb:35:in `require'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract-ocr.rb:35:in `<top (required)>'
from /Users/n/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in `require'
from /Users/n/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:68:in `block (2 levels) in require'
from /Users/n/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `each'
from /Users/n/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:66:in `block in require'
from /Users/n/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `each'
from /Users/n/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler/runtime.rb:55:in `require'
from /Users/n/.rvm/gems/ruby-1.9.3-p0@global/gems/bundler-1.1.3/lib/bundler.rb:119:in `require'
from /Users/n/Desktop/brandlove/config/application.rb:7:in `<top (required)>'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.2/lib/rails/commands.rb:53:in `require'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.2/lib/rails/commands.rb:53:in `block in <top (required)>'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.2/lib/rails/commands.rb:50:in `tap'
from /Users/n/.rvm/gems/ruby-1.9.3-p0/gems/railties-3.2.2/lib/rails/commands.rb:50:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
server:brandlove n$
日志文件:
/var/folders/hm/6n4h3d1s49b_pxt2m51gr39c0000gn/T/.ffi-inline-501/793babd774d7ac74de2eb789882efa735f45b30b.cpp:1:30: error: tesseract/strngs.h: No such file or directory
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:51: error: expected constructor, destructor, or type conversion before ‘*’ token
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:57: error: variable or field ‘destroy_string’ declared void
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:57: error: ‘STRING’ was not declared in this scope
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:57: error: ‘value’ was not declared in this scope
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:63: error: ‘STRING’ was not declared in this scope
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:63: error: ‘value’ was not declared in this scope
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:63: error: expected ‘,’ or ‘;’ before ‘{’ token
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:69: error: ‘STRING’ was not declared in this scope
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:69: error: ‘value’ was not declared in this scope
/Users/n/.rvm/gems/ruby-1.9.3-p0/gems/tesseract-ocr-0.1.5/lib/tesseract/c.rb:69: error: expected ‘,’ or ‘;’ before ‘{’ token
最佳答案
据我所知，您使用的是 mac 操作系统...
解决任何安装错误的最简单方法是全新安装 :) tesseract 和 gem 'tesseract-ocr'
如果你有 homebrew 就很容易了安装
$ brew install tesseract
这需要一些时间并且会安装 tesseract 本身和所有必要的库
当然还有之后
$ gem install 'tesseract-ocr'
(或 $ bundle install 如果您将其添加到 Gemfile)
关于ruby-on-rails - 用于 ruby/rails 的 OCR tesseract gem - 如何安装？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/12808243/