我正在安装 Ruby Nokogiri gem 并在下面找到错误。
如何诊断并解决它?
# gem install nokogiri
Building native extensions. This could take a while...
ERROR: Error installing nokogiri:
ERROR: Failed to build gem native extension.
...
/opt/ruby/1.9.3-p194/bin/ruby extconf.rb
checking for libxml/parser.h... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of
necessary libraries and/or headers. Check the mkmf.log file for more
details. You may need configuration options.
...
/opt/ruby/1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:381:in `try_do':
The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /opt/ruby/1.9.3-p194/lib/ruby/1.9.1/mkmf.rb:506:in `try_cpp'
...