Gem install on Windows 7 - ruby-on-rails

Question

Try to install feedzirra gem
Do this:
gem install pauldix-feedzirra
I get the following error:
Temporarily enhancing PATH to include DevKit...
Building native extensions. This could take a while...
ERROR: Error installing pauldix-feedzirra:
ERROR: Failed to build gem native extension.
C:/Ruby192/bin/ruby.exe extconf.rb
checking for curl-config... no
checking for main() in -lcurl... 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=C:/Ruby192/bin/ruby
--with-curl-dir
--without-curl-dir
--with-curl-include
--without-curl-include=${curl-dir}/include
--with-curl-lib
--without-curl-lib=${curl-dir}/lib
--with-curllib
--without-curllib
extconf.rb:17:in `<main>': Can't find libcurl or curl/curl.h (RuntimeError)
Try passing --with-curl-dir or --with-curl-lib and --with-curl-include
options to extconf.
Gem files will remain installed in C:/Ruby192/lib/ruby/gems/1.9.1/gems/taf2-curb-0.5.4.0 for inspection.
Results logged to C:/Ruby192/lib/ruby/gems/1.9.1/gems/taf2-curb-0.5.4.0/ext/gem_make.out
Ver:
C:\Ruby192>gem -v
1.3.7
C:\Ruby192>ruby -v
ruby 1.9.2p0 (2010-08-18) [i386-mingw32]
Does anyone know how to fix this?
Thanks

Answer 1

It seems you don't have libcurl installed:
checking for curl-config... no
checking for main() in -lcurl... no
Try this: download it and copy everything from the bin directory either to C:\Windows\System32 or %RUBY_ROOT%\bin.

Answer 2

You need to download Curl (binaries and devel). The problem you have is that it can't find the header files that usually are on devel packages.