Rails 4:安装 tiny

本文介绍了Rails 4:安装 tiny_tds gem 时出错?的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我使用 Ruby v2 和 Rails v4 开发了一个 rails web 项目.它在我当前的系统中运行良好，当我尝试在另一台 Linux 机器(Ubuntu 12.4)上运行这个项目时，我收到了 Tidy_tds 错误.

I have developed a rails web project with Ruby v2 and Rails v4. It was perfectly working in my current system and when i tried to run this project in another Linux machine (Ubuntu 12.4 ) i am getting a Tidy_tds error .

这个错误是在bundle install时显示的，

This error is showing at the time of bundle install ,

错误详情如下

Gem::Ext::BuildError: ERROR: Failed to build gem native extension. /home/action/.rvm/rubies/ruby-2.1.1/bin/ruby extconf.rb checking for iconv_open() in iconv.h... yes checking for sybfront.h... no ----- freetds is missing. Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/home/action/.rvm/rubies/ruby-2.1.1/bin/ruby --enable-lookup --disable-lookup --with-iconv-dir --without-iconv-dir --with-iconv-include --without-iconv-include=${iconv-dir}/include --with-iconv-lib --without-iconv-lib=${iconv-dir}/lib --with-freetds-dir --without-freetds-dir --with-freetds-include --without-freetds-include=${freetds-dir}/include --with-freetds-lib --without-freetds-lib=${freetds-dir}/lib extconf failed, exit code 1 Gem files will remain installed in /home/action/.rvm/gems/ruby-2.1.1/gems/tiny_tds-0.6.1 for inspection. Results logged to /home/action/.rvm/gems/ruby-2.1.1/extensions/x86_64-linux/2.1.0/tiny_tds-0.6.1/gem_make.out An error occurred while installing tiny_tds (0.6.1), and Bundler cannot continue. Make sure that `gem install tiny_tds -v '0.6.1'` succeeds before bundling.

我也尝试过单独安装 tiny_tds，但我仍然遇到同样的问题

I have also tried installing tiny_tds seperatly, but still i am getting the same issue

gem install tiny_tds -v '0.6.1'

我的宝石文件，

source 'rubygems' # Bundle edge Rails instead: gem 'rails', github: 'rails/rails' gem 'rails', '4.0.2' # Use SCSS for stylesheets gem 'sass-rails', '~> 4.0.0' gem 'tiny_tds' # Use Uglifier as compressor for JavaScript assets gem 'uglifier', '>= 1.3.0' # Use CoffeeScript for .js.coffee assets and views gem 'coffee-rails', '~> 4.0.0' # See github/sstephenson/execjs#readme for more supported runtimes # gem 'therubyracer', platforms: :ruby # Use jquery as the JavaScript library gem 'jquery-rails' # Turbolinks makes following links in your web application faster. Read more: github/rails/turbolinks gem 'turbolinks' gem 'jquery-ui-rails' # jquery ui # Build JSON APIs with ease. Read more: github/rails/jbuilder gem 'jbuilder', '~> 1.2' group :doc do # bundle exec rake doc:rails generates the API under doc/api. gem 'sdoc', require: false end # Use sqlserver as the database for Active Record gem 'activerecord-sqlserver-adapter', :git => 'github/nextgearcapital/activerecord-sqlserver-adapter.git' gem "therubyracer" gem "less-rails" gem "twitter-bootstrap-rails" gem 'bootstrap-datepicker-rails' gem 'will_paginate' gem 'sqlite3' gem 'formtastic'

为什么会出现这个错误以及如何解决这个问题.

Why is this error appearing and how to solve this issue.

感谢任何帮助

推荐答案

看起来你这台机器上没有安装 freetds:

Looks like you don't have freetds installed on this machine:

sudo apt-get install freetds-dev

如果您看到 freetds-dev 包的详细信息，您将看到它缺少文件 sybfront.h

If you see the details of the freetds-dev package you will see it has the missing file sybfront.h

我不知道 freetds 的 gem 并且构建 tiny_tds gem 需要它进行编译.但是，您应该可以使用 MiniPortile 构建自己的 gem 版本.

There is no gem that I know for freetds and building the tiny_tds gem requires it to compile. However it should be possible for you build your own version of the gem using MiniPortile.

您需要从 GitHub 克隆 tiny_tds，然后为您的环境构建本机 gem，而不是使用普通的 gem install 机制.此过程将包括下载用于编译 gem 的特定版本的 freetds.

Rather than using the normal gem install mechanism you need to clone the tiny_tds from GitHub and then build a native gem for your environment. This process will include downloading a specific version of freetds which is used to compile the gem against.

这应该可以让您解决无法安装 freetds-dev 包的问题，​​但确实有一个缺点，如果 tiny_tds gem 将来更新，您每次都需要重复此过程 - 您不能简单地利用 bundle update.

This should get you round the problem of not being able to install freetds-dev package, but does have the disadvantage that if tiny_tds gem is updated in the future you will need to repeat this process each time - you can't simply take advantage of bundle update.

此处详细介绍了您需要遵循的步骤.

The steps you need to follow are detailed here.