我尝试为Mac OS X安装libxml-ruby v2.3.3.
localhost:tmp$ uname -a
Darwin 11.4.2 Darwin Kernel Version 11.4.2: Thu Aug 23 16:26:45 PDT 2012; root:xnu-1699.32.7~1/RELEASE_I386 i386
localhost:tmp$ ruby -v
ruby 1.9.2p320 (2012-04-20 revision 35421) [x86_64-darwin11.4.2]
localhost:tmp$ gem -v
1.8.24
gem install libxml-ruby -v '2.3.3'
Building native extensions. This could take a while...
ERROR: Error installing libxml-ruby:
ERROR: Failed to build gem native extension.
/Users/ruslan/.rvm/rubies/ruby-1.9.2-p320/bin/ruby extconf.rb
checking for socket() in -lsocket... no
checking for gethostbyname() in -lnsl... no
checking for atan() in -lm... no
checking for …