ruby-on-rails - 无法在 Ruby on Rails 上安装 Puma gem

Question

我正在尝试安装 puma gem，但是当我运行时

gem install puma

我收到此错误消息:

Temporarily enhancing PATH to include DevKit
Building native extensions.  This could take a while...
ERROR:  Error installing puma:
        ERROR: Failed to build gem native extension.

    C:/Ruby193/bin/ruby.exe extconf.rb
creating Makefile

make                                                
generating puma_http11-i386-mingw32.def                              
compiling http11_parser.c       
ext/http11/http11_parser.rl: In function 'puma_parser_execute':  
ext/http11/http11_parser.rl:111:3: warning: comparison between signed and unsigned integer   expressions    
compiling io_buffer.c   
io_buffer.c: In function 'buf_to_str':             
io_buffer.c:119:3: warning: pointer targets in passing argument 1 of 'rb_str_new'      differ in signedness             
c:/Ruby193/include/ruby-1.9.1/ruby/intern.h:653:7: note: expected 'const char *' but argument is of type 'uint8_t *'                    
compiling mini_ssl.c                                         
In file included from mini_ssl.c:3:0:                                        
c:/Ruby193/include/ruby-1.9.1/ruby/backward/rubyio.h:2:2: warning: #warning use "ruby/io.h" instead of "rubyio.h"              
mini_ssl.c:4:25: fatal error: openssl/bio.h: No such file or directory               
compilation terminated.                     
make: *** [mini_ssl.o] Error 1             

Gem files will remain installed in C:/Ruby193/lib/ruby/gems/1.9.1/gems/puma-2.6.0 for inspection.
Results logged to C:/Ruby193/lib/ruby/gems/1.9.1/gems/puma-2.6.0/ext/puma_http11/gem_make.out

将 gem 'puma' 添加到我的 Gemfile 并运行 bundle install 不是一个选项，因为这不适用于任何 gem，并且会给我一个错误消息(这是一个单独的问题，我通过 gem install 安装其他 gem 来规避这个问题)。

Answer 1

遇到了同样的问题。

sudo apt-get install libssl-dev

帮我修好了。