I am trying to install Hpricot but receive a build tools error from
gem install. However I can install nokogiri gem can actually even
figure I can't type and fixed up my nokogirl entry.

What do I need to do with hpricot.

This is my install


C:\rubygems-1.3.7>gem install hpricot
Building native extensions.  This could take a while...
ERROR:  Error installing hpricot:
        ERROR: Failed to build gem native extension.

C:/Ruby192/bin/ruby.exe extconf.rb
checking for stdio.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.

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=C:/Ruby192/bin/ruby
C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': The complier failed
to generate an executable file. (RuntimeError)
You have to install development tools first.
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:452:in `try_cpp'
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:834:in `block in
have_header'
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:693:in `block in
checking_for'
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block (2
levels) in postpone'
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open'
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:280:in `block in
postpone'
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:254:in `open'
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:276:in `postpone'
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for'
        from C:/Ruby192/lib/ruby/1.9.1/mkmf.rb:833:in `have_header'
        from extconf.rb:2:in `<main>'


Gem files will remain installed in C:/Ruby192/lib/ruby/gems/1.9.1/gems/
hpricot-0.8.2 for inspection.
Results logged to C:/Ruby192/lib/ruby/gems/1.9.1/gems/hpricot-0.8.2/
ext/fast_xs/gem_make.out

C:\rubygems-1.3.7>gem install try_do
ERROR:  Could not find a valid gem 'try_do' (>= 0) in any repository

C:\rubygems-1.3.7>gem try_do hpricot
ERROR:  While executing gem ... (RuntimeError)
    Unknown command try_do

C:\rubygems-1.3.7>gem install try_cpp
ERROR:  Could not find a valid gem 'try_cpp' (>= 0) in any repository

C:\rubygems-1.3.7>gem install nokogirl

********************************************
It's actually spelled nokogiri, not nokogirl
********************************************

Successfully installed nokogiri-1.4.3.1-x86-mingw32
Successfully installed nokogirl-1.0
2 gems installed
Installing ri documentation for nokogiri-1.4.3.1-x86-mingw32...
Installing ri documentation for nokogirl-1.0...
Installing RDoc documentation for nokogiri-1.4.3.1-x86-mingw32...
Installing RDoc documentation for nokogirl-1.0...

C:\rubygems-1.3.7>

PS package management that picks up typo's pretty narly