curb is a required, but also throwing errors

[~]$ gem install curb
Building native extensions.  This could take a while...
ERROR:  Error installing curb:
	ERROR: Failed to build gem native extension.

        /home/jumpingcloud/.rvm/rubies/ruby-1.9.3-p194/bin/ruby 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
	--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=/home/jumpingcloud/.rvm/rubies/ruby-1.9.3-p194/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:23: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 /home/jumpingcloud/.rvm/gems/ruby-1.9.3-p194/gems/curb-0.8.0 for inspection.
Results logged to /home/jumpingcloud/.rvm/gems/ruby-1.9.3-p194/gems/curb-0.8.0/ext/gem_make.out
[~]$