[英]Can not install json gem with ruby 2.2.3 on Ubuntu
I am going through a Rails tutorial and I'm not able to complete 'bundle install' due to a problem with the json gem. 我正在阅读Rails教程,由于json gem的问题,我无法完成'bundle install'。 When I attempt to install it directly:
当我尝试直接安装它时:
me@tru2:~/rails/hello_app$ gem install json -v '1.8.3'
Building native extensions. This could take a while...
ERROR: Error installing json:
ERROR: Failed to build gem native extension.
/home/me/.rvm/rubies/ruby-2.2.3-dev/bin/ruby -r ./siteconf20150820-12793-qdkev7.rb extconf.rb
creating Makefile
make "DESTDIR=" clean
make "DESTDIR="
compiling generator.c
linking shared-object json/ext/generator.so
/usr/bin/ld: cannot find -lgmp
collect2: error: ld returned 1 exit status
make: *** [generator.so] Error 1
make failed, exit code 2
Gem files will remain installed in /home/me/.rvm/gems/ruby-2.2.3-dev/gems/json-1.8.3 for inspection.
Results logged to /home/me/.rvm/gems/ruby-2.2.3-dev/extensions/x86_64-linux/2.2.0/json-1.8.3/gem_make.out
As mentioned the ruby version is 2.2.3. 如上所述,ruby版本是2.2.3。
me@tru2:~/rails/hello_app$ ruby --version
ruby 2.2.3p173 (2015-08-18 revision 51636) [x86_64-linux]
Running 'gem list' shows that json 1.8.1 is currently installed but something in the default Gemfile must require 1.8.3. 运行'gem list'表示当前安装了json 1.8.1,但默认Gemfile中的某些内容必须要求1.8.3。 A search showed many similar questions but no answers that got me past this issue.
搜索显示了许多类似的问题,但没有答案让我超越了这个问题。 I have tried running with sudo and it appears to work but going back to me the issue is still there.
我试过用sudo运行它似乎工作但回到我身边的问题仍然存在。
cannot find -lgmp
means that it can't find the gmp library. cannot find -lgmp
意味着找不到gmp库。 Try running: 试试跑步:
sudo apt-get install libgmp3-dev
https://github.com/flori/json/issues/253 https://github.com/flori/json/issues/253
Json 1.8.3 seems to have some issues with Ruby 2.2.3 (though I expect some future patches of Ruby will probably fix the problem). Json 1.8.3似乎在Ruby 2.2.3中存在一些问题(尽管我预计未来的一些Ruby补丁可能会解决这个问题)。 Downgrading Ruby to 2.2.2 worked for me.
将Ruby降级到2.2.2对我有用。
(That said, so did sudo apt-get install libgmp3-dev
, as @alf suggested - but if you're not able to do that, downgrading ruby might be a feasible alternative.) (也就是说,
sudo apt-get install libgmp3-dev
也是如此 ,正如@alf 建议的那样 - 但是如果你无法做到这一点,那么降级ruby可能是一个可行的选择。)
Try running rvm implode
and then following this guide http://ryanbigg.com/2014/10/ubuntu-ruby-ruby-install-chruby-and-you/ 尝试运行
rvm implode
然后按照本指南http://ryanbigg.com/2014/10/ubuntu-ruby-ruby-install-chruby-and-you/
I suspect RVM did not include the correct headers for you. 我怀疑RVM没有为您包含正确的标头。
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