無法安裝Ruby AMQP Gem

Question

目前，我在我的Ubuntu 11.10上安裝了Ruby（ruby 1.9.3p194（2012-04-20 revision 35410））。想要使用「sudo gem install amqp」來安裝AMQP gem。但它失敗並出現以下錯誤消息：

Building native extensions. This could take a while... 
    ERROR: Error installing amqp: 
    ERROR: Failed to build gem native extension. 

    /usr/local/bin/ruby extconf.rb 
    checking for main() in -lssl... no 
    checking for rb_trap_immediate in ruby.h,rubysig.h... no 
    checking for rb_thread_blocking_region()... yes 
    checking for inotify_init() in sys/inotify.h... yes 
    checking for writev() in sys/uio.h... yes 
    checking for rb_thread_check_ints()... yes 
    checking for rb_time_new()... yes 
    checking for sys/event.h... no 
    checking for epoll_create() in sys/epoll.h... yes 
    creating Makefile 

    make 
    compiling ed.cpp 
    make: g++: Command not found 
    make: *** [ed.o] Error 127 


    Gem files will remain installed in /usr/local/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.0 for inspection. 
    Results logged to /usr/local/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.0/ext/gem_make.out 

如果有人能幫我一下，我將不勝感激。謝謝。

Answer 1

爲了編譯原生擴展，你需要一個編譯器。只需安裝g ++和朋友使用：

sudo apt-get install build-essential 

並再試一次。