无法安装"gem install eventmachine".我需要在我的项目中使用starling,因为我需要安装eventmachine

Question

我在我的控制台上收到以下错误

root@comp09:~# gem install eventmachine
Building native extensions.  This could take a while...
ERROR:  Error installing eventmachine:
 ERROR: Failed to build gem native extension.

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

make
I. -I/usr/local/lib/ruby/1.8/x86_64-linux -I/usr/local/lib/ruby/1.8/x86_64-linux -I. -DBUILD_FOR_RUBY -DHAVE_RB_TRAP_IMMEDIATE -DHAVE_RBTRAP -DHAVE_INOTIFY_INIT -DHAVE_INOTIFY -DHAVE_WRITEV -DHAVE_WRITEV -DHAVE_RB_TIME_NEW -DOS_UNIX -DHAVE_EPOLL_CREATE -DHAVE_EPOLL -DWITH_SSL    -fPIC -O2 -g -Wall -Wno-parentheses -Wno-long-long     -o rubymain.o -c rubymain.cpp
make: I.: Command not found
make: [rubymain.o] Error 127 (ignored)
I. -I/usr/local/lib/ruby/1.8/x86_64-linux -I/usr/local/lib/ruby/1.8/x86_64-linux -I. -DBUILD_FOR_RUBY -DHAVE_RB_TRAP_IMMEDIATE -DHAVE_RBTRAP -DHAVE_INOTIFY_INIT -DHAVE_INOTIFY -DHAVE_WRITEV -DHAVE_WRITEV -DHAVE_RB_TIME_NEW -DOS_UNIX -DHAVE_EPOLL_CREATE -DHAVE_EPOLL -DWITH_SSL    -fPIC -O2 -g -Wall -Wno-parentheses -Wno-long-long     -o em.o -c em.cpp
make: I.: Command not found

如有任何帮助和建议,将不胜感激.

Answer 1

我在安装eventmachine的Ubuntu 11.10上遇到过类似的问题.
区别在于(接近日志结尾)

make: g++: Command not found

代替

make: I.: Command not found

此问题与GCC上的C++有关,并通过安装build-essential解决

sudo apt-get install build-essential 

Answer 2

您可能还缺少ruby开发包.根据您使用的ruby版本,可能是ruby-dev,ruby1.8-dev,ruby1.9-dev或ruby1.9.1-dev.我有同样的问题,并安装了ruby1.9-dev和ruby1.9.1-dev,这解决了我的问题.

这个网站让我尝试这种方法:http://ruby.about.com/od/faqs/qt/Extconf-Rb-1-In-Require-No-Such-File-To-Load-Mkmf- Loaderror.htm