rails console需要無法加載此類文件的readline

Question

我是Ruby on Rails的新手，我按源安裝ruby。

Ruby版本是2.3.0，rails版本是Rails 4.2.5。

我無法運行rails c或rails console 。

它給我以下錯誤：

Running via Spring preloader in process 4267
/usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require': cannot load such file -- readline (LoadError)
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `block in require'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:in `load_dependency'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require'
from /usr/local/lib/ruby/2.3.0/irb/completion.rb:10:in `<top (required)>'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `block in require'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:in `load_dependency'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require'
from /usr/local/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/commands/console.rb:3:in `<top (required)>'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `block in require'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:in `load_dependency'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require'
from /usr/local/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:123:in `require_command!'
from /usr/local/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:58:in `console'
from /usr/local/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
from /usr/local/lib/ruby/gems/2.3.0/gems/railties-4.2.5/lib/rails/commands.rb:17:in `<top (required)>'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `block in require'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:in `load_dependency'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:274:in `require'
from /home/james/Desktop/myapp/bin/rails:9:in `<top (required)>'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in `load'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in `block in load'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:240:in `load_dependency'
from /usr/local/lib/ruby/gems/2.3.0/gems/activesupport-4.2.5/lib/active_support/dependencies.rb:268:in `load'
from /usr/local/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from /usr/local/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in `require'
from -e:1:in `<main>'

編輯

我在@Vasfed鏈接中嘗試第二個解決方案，它給了我以下錯誤：

make: *** No rule to make target `/internal.h', needed by `readline.o'.  Stop.

Answer 1

您的應用程序需要Readline gem，但未在Gemfile中指定

請將其添加到您的gem文件中

gem 'rb-readline' 

還重新安裝

libreadline-dev

Answer 2

如果從源代碼安裝，請首先安裝libredline-dev，然后轉到ruby-2.3.0 / ext / readline（或源代碼所在的位置）/ ext / readline。

ruby extconf.rb

make

make install

如果出現錯誤，請在運行extconf.rb后編輯Makefile ，並在archdir = $(rubyarchdir)之后添加top_srcdir = ../..

然后，再次運行make && make install 。

Answer 3

您需要一些額外的依賴項

sudo apt-get install build-essential libssl-dev curl libcurl3 libreadline-dev libcurl4-openssl-dev libffi-dev libgdbm3 libgdbm-dev

安裝依賴項后，在ruby源代碼文件夾中執行此操作：

.configure
make
sudo make install

Answer 4

安裝gem rb-readline是一種解決方法。

相反，您不應該要求使用ext / readline安裝ruby。

為此，您需要ncurses devel和readline devel庫

在CentOS中， yum install readline readline-devel ncurses ncurses-devel

哦，安裝庫之后，你應該重新編譯你的ruby。