I'm trying to install libxml on osx as a gem (Ruby 1.8.2). Any ideas on
how to resolve these issues? (please see output below)

Thank you,
Nicholas

Attempting local installation of 'libxml'
Local gem file not found: libxml*.gem
Attempting remote installation of 'libxml'
Building native extensions.  This could take a while...
extconf.rb:64: undefined method `find_header' for main:Object
(NoMethodError)
ERROR:  While executing gem ... (RuntimeError)
    ERROR: Failed to build gem native extension.
Gem files will remain installed in
/usr/local/lib/ruby/gems/1.8/gems/libxml-ruby-0.3.8 for inspection.
  ruby extconf.rb install libxml\nchecking for socket() in -lsocket...
no
checking for gethostbyname() in -lnsl... no
checking for atan() in -lm... no
checking for atan() in -lm... yes
checking for inflate() in -lz... yes
checking for iconv_open() in -liconv... yes
checking for xmlParseDoc() in -lxml2... yes
checking for libxml/xmlversion.h... no