ruby - 在 Ubuntu for Discourse 上安装 fast_xor Gem 时遇到问题

Question

我对 ruby​​、rvm、gems 等术语很陌生；但我正在尝试在 Ubuntu 12.10 服务器上安装 Discourse。我使用 bundle install 安装了所有 gem，除了一个，fast_xor:

Installing fast_xor (1.1.1) 
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /home/ubuntu/.rvm/rubies/ruby-2.0.0-p0/bin/ruby extconf.rb 
creating Makefile

make
compiling xor.c
xor.c: In function ‘string_xor’:
xor.c:28:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
xor.c:45:7: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
linking shared-object xor.so

make install
/usr/bin/install -c -m 0755 xor.so /home/ubuntu/.rvm/gems/ruby-2.0.0-p0/gems/fast_xor-1.1.1/lib/fast_xor
/usr/bin/install: cannot create regular file `/home/ubuntu/.rvm/gems/ruby-2.0.0-p0/gems/fast_xor-1.1.1/lib/fast_xor': No such file or directory
make: *** [install-so] Error 1


Gem files will remain installed in /home/ubuntu/.rvm/gems/ruby-2.0.0-p0/gems/fast_xor-1.1.1 for inspection.
Results logged to /home/ubuntu/.rvm/gems/ruby-2.0.0-p0/gems/fast_xor-1.1.1/ext/xor/gem_make.out

An error occurred while installing fast_xor (1.1.1), and Bundler cannot continue.
Make sure that `gem install fast_xor -v '1.1.1'` succeeds before bundling.

我已经从 Git 中检查了 fast_xor 项目，但是从源代码编译时我收到了类似的错误。

rvm list 只列出一个 Ruby 版本:

ubuntu@ip-10-245-40-185:~/discourse$ rvm list

rvm rubies

=* ruby-2.0.0-p0 [ x86_64 ]

# => - current
# =* - current && default
#  * - default

我不确定从这里到哪里去？

Answer 1

在你的 Gemfile 中替换行:

gem 'fast_xor'

对于以下一个(从修复了错误的 Git 存储库中提取 fast_xor):

gem "fast_xor", :git => "git://github.com/CodeMonkeySteve/fast_xor.git"

如果出于某种原因 git 协议(protocol)在您的网络中受到防火墙保护(就像我的情况)，那么您可以将其替换为 HTTPS:

gem "fast_xor", :git => "https://github.com/CodeMonkeySteve/fast_xor.git"