Question

每次尝试更新或安装JSON gem时，都会出现构建错误。这些是输出文件中的结果：

c:/Ruby193/bin/ruby.exe extconf.rb 
creating Makefile

make
generating parser-i386-mingw32.def
compiling parser.c
In file included from c:/Ruby193/include/ruby-1.9.1/ruby/ruby.h:1360,
                 from c:/Ruby193/include/ruby-1.9.1/ruby.h:32,
                 from ../fbuffer/fbuffer.h:6,
                 from parser.rl:1:
c:/Ruby193/include/ruby-1.9.1/ruby/missing.h:41: error: redefinition of 'struct timespec'
c:/Ruby193/include/ruby-1.9.1/ruby/missing.h:48: error: redefinition of 'struct timezone'
make: *** [parser.o] Error 1

我开始学习Rails，我想在继续学习之前解决这个问题。

这是生成的默认Gemfile：

source 'http://rubygems.org'

gem 'rails', '3.1.3'

# Bundle edge Rails instead:
# gem 'rails',     :git => 'git://github.com/rails/rails.git'

gem 'sqlite3'


# Gems used only for assets and not required
# in production environments by default.
group :assets do
  gem 'sass-rails',   '~> 3.1.5'
  gem 'coffee-rails', '~> 3.1.1'
  gem 'uglifier', '>= 1.0.3'
end

gem 'jquery-rails'

# To use ActiveModel has_secure_password
# gem 'bcrypt-ruby', '~> 3.0.0'

# Use unicorn as the web server
# gem 'unicorn'

# Deploy with Capistrano
# gem 'capistrano'

# To use debugger
# gem 'ruby-debug19', :require => 'ruby-debug'

group :test do
  # Pretty printed test output
  gem 'turn', '~> 0.8.3', :require => false
end

Answer 1

要构建需要本机构建工具的Gems，请确保已安装DevKit。链接中提供了说明。

您可以添加gem install json或适当命令的结果吗？

Answer 2

如果这只是本地的，你可以随时采用简单的方法来代替gem install json_pure（100％的Ruby实现，它很慢但是有效）

Answer 3

这是一个老问题，但这对我有用：https://github.com/oneclick/rubyinstaller/wiki/Troubleshooting#gems_fails_comspec_autorun

特别是情景B

REG QUERY "HKCU\Software\Microsoft\Command Processor" /s

如果你得到一个＆＃39; AUTORUN＆＃39;响应，删除如下：

REG DELETE "HKCU\Software\Microsoft\Command Processor" /v AutoRun

JSON Gem无法安装（Windows）

3 个答案: