嘗試在 xubuntu 14.04 錯誤上安裝 rails：無法構建 gem 本機擴展

Question

gem install rails 對我不起作用。 我從這個站點http://installfest.railsbridge.org/installfest/linux （當然是最新版本）一步一步地做了所有事情，然后我卸載了 ruby​​、ruby gems、rvm 並從這個站點做了所有事情https://gorails .com/setup/ubuntu/14.04也不起作用。 我看過許多相關主題並嘗試了許多解決方案，但似乎沒有任何效果對我有用。 我試過ruby-dev，ruby-all-dev，重新安裝ruby，我確定我已經安裝了，rvm要求。 我找不到任何可以解決問題的東西，所以希望你們能幫助我。

emil@emil-AO725:~$ gem install rails -v 4.2.4
Fetching: thread_safe-0.3.5.gem (100%)
Successfully installed thread_safe-0.3.5
Fetching: minitest-5.8.0.gem (100%)
Successfully installed minitest-5.8.0
Fetching: tzinfo-1.2.2.gem (100%)
Successfully installed tzinfo-1.2.2
Fetching: i18n-0.7.0.gem (100%)
Successfully installed i18n-0.7.0
Fetching: activesupport-4.2.4.gem (100%)
Successfully installed activesupport-4.2.4
Fetching: rails-deprecated_sanitizer-1.0.3.gem (100%)
Successfully installed rails-deprecated_sanitizer-1.0.3
Fetching: mini_portile-0.6.2.gem (100%)
Successfully installed mini_portile-0.6.2
Fetching: nokogiri-1.6.6.2.gem (100%)
Building native extensions.  This could take a while...
ERROR:  Error installing rails:
    ERROR: Failed to build gem native extension.

    /home/emil/.rvm/rubies/ruby-2.2.3/bin/ruby -r ./siteconf20150905-28115-dnm7rt.rb extconf.rb
checking if the C compiler accepts ... *** extconf.rb failed ***
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-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/home/emil/.rvm/rubies/ruby-2.2.3/bin/$(RUBY_BASE_NAME)
    --help
    --clean
/home/emil/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
    from /home/emil/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:571:in `block in try_compile'
    from /home/emil/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:522:in `with_werror'
    from /home/emil/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:571:in `try_compile'
    from extconf.rb:80:in `nokogiri_try_compile'
    from extconf.rb:87:in `block in add_cflags'
    from /home/emil/.rvm/rubies/ruby-2.2.3/lib/ruby/2.2.0/mkmf.rb:619:in `with_cflags'
    from extconf.rb:86:in `add_cflags'
    from extconf.rb:337:in `<main>'

extconf failed, exit code 1

Gem files will remain installed in /home/emil/.rvm/gems/ruby-2.2.3/gems/nokogiri-1.6.6.2 for inspection.
Results logged to /home/emil/.rvm/gems/ruby-2.2.3/extensions/x86_64-linux/2.2.0/nokogiri-1.6.6.2/gem_make.out

Answer 1

如果您使用的是 ruby​​ 版本管理器，請嘗試切換到 ruby​​ 2.2.2 。 並再次嘗試安裝 gems。 我遇到了同樣的問題，我通過切換到 ruby​​ 2.2.2 成功安裝了我的 gem。 也許它是 ruby​​ 2.2.3 的問題。