我正在尝试在SUSE Enterprise 11 SP3上安装指南针.我得到以下内容.有任何想法吗？
gem install compass
Building native extensions. This could take a while...
ERROR: Error installing compass:
ERROR: Failed to build gem native extension.
/usr/bin/ruby extconf.rb
<b>mkmf.rb can't find header files for ruby at /usr/lib64/ruby/ruby.h</b>
extconf failed, exit code 1
Gem files will remain installed in /usr/lib64/ruby/gems/1.8/gems/ffi-1.9.3 for inspection.
Results logged to /usr/lib64/ruby/gems/1.8/extensions/x86_64-linux/1.8/ffi-1.9.3gem_make.out