I have done as was suggested: I've read the posts & there are similar  
messages but unfortunately not ones I can understand or use. So with  
apologies for my stupidity, please could you suggest ways to get  
libxml-ruby installed so I can install rubyosa ? The terminal printout  
is given below.

ruby -v  gives: ruby 1.8.6 (2007-03-13 patchlevel 0) [universal- 
darwin8.0]

thankyou,

regards & happy new year

timW



******************************************************
the-laptop:~ timothyapweatherstone$ sudo gem install -r libxml-ruby
Building native extensions.  This could take a while...
ERROR:  While executing gem ... (Gem::Installer::ExtensionBuildError)
     ERROR: Failed to build gem native extension.

ruby extconf.rb install -r libxml-ruby
checking 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... no
checking for inflate() in -lzlib... no
checking for inflate() in -lzlib1... no
*** 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.

Provided configuration options:
        --with-opt-dir
        --without-opt-dir
        --with-opt-include
        --without-opt-include=${opt-dir}/include
        --with-opt-lib
        --without-opt-lib=${opt-dir}/lib
        --with-make-prog
        --without-make-prog
        --srcdir=.
        --curdir
        --ruby=/usr/local/bin/ruby
        --with-iconv-dir
        --without-iconv-dir
        --with-iconv-include
        --without-iconv-include=${iconv-dir}/include
        --with-iconv-lib
        --without-iconv-lib=${iconv-dir}/lib
        --with-xml2-dir
        --without-xml2-dir
        --with-xml2-include
        --without-xml2-include=${xml2-dir}/include
        --with-xml2-lib
        --without-xml2-lib=${xml2-dir}/lib
        --with-zlib-dir
        --without-zlib-dir
        --with-zlib-include
        --without-zlib-include=${zlib-dir}/include
        --with-zlib-lib
        --without-zlib-lib=${zlib-dir}/lib
        --with-socketlib
        --without-socketlib
        --with-nsllib
        --without-nsllib
        --with-mlib
        --without-mlib
        --with-mlib
        --without-mlib
        --with-zlib
        --without-zlib
        --with-zliblib
        --without-zliblib
        --with-zlib1lib
        --without-zlib1lib
  extconf failure: need zlib


Gem files will remain installed in /usr/local/lib/ruby/gems/1.8/gems/ 
libxml-ruby-0.5.2.0 for inspection.
Results logged to /usr/local/lib/ruby/gems/1.8/gems/libxml- 
ruby-0.5.2.0/ext/xml/gem_make.out
the-laptop:~ timothyapweatherstone$

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