Ruby on rails 安装eventmachine gem时出错

运行

foreman start

时，出现以下错误：

pallav@pallav-System-Product-Name:~/Workspace/Aadvisor$ foreman start
10:04:32 web.1  | started with pid 11022 10:04:32 web.1  |
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/spec_set.rb:92:in
`block in materialize': Could not find eventmachine-0.12.10 in any of
the sources (Bundler::GemNotFound) 10:04:32 web.1  |  from
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/spec_set.rb:85:in
`map!' 10:04:32 web.1  |  from
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/spec_set.rb:85:in
`materialize' 10:04:32 web.1  |   from
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/definition.rb:114:in
`specs' 10:04:32 web.1  |   from
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/definition.rb:159:in
`specs_for' 10:04:32 web.1  |   from
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/definition.rb:148:in
`requested_specs' 10:04:32 web.1  |   from
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/environment.rb:18:in
`requested_specs' 10:04:32 web.1  |   from
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/runtime.rb:13:in
`setup' 10:04:32 web.1  |   from
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler.rb:120:in `setup'
10:04:32 web.1  |   from
/var/lib/gems/1.9.1/gems/bundler-1.3.5/lib/bundler/setup.rb:17:in
`<top (required)>' 10:04:32 web.1  |  from
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
10:04:32 web.1  |   from
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
10:04:32 web.1  | exited with code 1 10:04:32 system | sending SIGTERM
to all processes SIGTERM received
pallav@pallav-System-Product-Name:~/Workspace/Aadvisor$

再次出现错误： 安装eventmachine（0.12.10）时出错，绑定程序无法继续。请确保gem安装eventmachine-v“0.12.10”在绑定之前成功

现在当我这么做的时候

sudo gem install eventmachine -v '0.12.10'

我再次得到一个错误，它说：

"ERROR: Error installing eventmachine: ERROR: Failed to build gem native extension."

---

请告诉我我缺少什么。

您需要运行

捆绑安装

您的计算机上没有安装Gemfile中所需的Gem。

尝试安装openssl和libstdc++。
如果您使用的是rvm，并且已经在单用户模式下安装了ruby，那么应该省略sudo

你能粘贴错误的完整日志吗？这样回答你的问题就容易多了

更新

---

请在另一个stackoverflow线程中参考此答案，并让我知道它是否有效

尝试更新您的系统RubyGems

rvm稳定下来

最新版本

我希望这对您有用。

要在Ubuntu 14.04上安装eventmachine 1.0.3，您首先需要运行：

sudo-apt-get-install-build-essential

然后

bundle安装

或

gem安装eventmachine

应该足够了

---

注意：如果您有rbenv，请记住为无法使用上述方法解决问题的其他人在

捆绑安装后运行
rbenv rehash

sudo -u gitlab -H bundle config build.eventmachine --with-cflags=\"-O2 -pipe -march=native -w\"
sudo -u gitlab -H bundle config build.thin --with-cflags=\"-O2 -pipe -march=native -w\"

如用户enrico所述。
尝试
gem安装eventmachine--with openssl dir=/usr/local/opt/openssl@1.1
我确实安装了bundle，但现在我收到另一个错误，上面写着：“安装eventmachine（0.12.10）时出错，绑定程序无法继续。请确保绑定前
gem install eventmachine-v'0.12.10'
成功。“当我尝试执行
sudo gem install eventmachine-v'0.12.10'
时，它再次提示一个新错误，该错误表示“错误：安装eventmachine时出错：错误：无法构建gem本机扩展。”这可能是问题所在，您可以尝试在命令行上运行
gcc
，它会提示您安装命令行utils。错误日志：还有您的操作系统详细信息，ruby versionLinux pallav System Product Name 3.11.0-14-generic 21 Ubuntu SMP Tue Nov 12 17:04:55 UTC 2013 x86_64 x86_64 GNU/Linuxruby 1.9.3p194（2012-04-20修订版35410）[x86_64-linux]找不到“project.h”文件位置，“gem install eventmachine”没有帮助。请同时检查：gem_make.outError日志
sudo -u gitlab -H bundle config build.eventmachine --with-cflags=\"-O2 -pipe -march=native -w\"
sudo -u gitlab -H bundle config build.thin --with-cflags=\"-O2 -pipe -march=native -w\"