I am trying to intsall middleman - a static site generator, which uses ruby gems. It is able to build all native extensions but not wdm. I am getting the below error message when I run install bundler command in my command prompt.
Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
C:/Ruby200/bin/ruby.exe -r ./siteconf20140814-4200-t0fvuf.rb extconf.rb
checking for main() in -lkernel32... *** 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:/Ruby200/bin/ruby
--with-kernel32lib
--without-kernel32lib
C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler failed to genera
te an executable file. (RuntimeError)
You have to install development tools first.
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:519:in `try_link0'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:534:in `try_link'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:720:in `try_func'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:950:in `block in have_library'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:895:in `block in checking_for'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:340:in `block (2 levels) in postp
one'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:310:in `open'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:340:in `block in postpone'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:310:in `open'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:336:in `postpone'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:894:in `checking_for'
from C:/Ruby200/lib/ruby/2.0.0/mkmf.rb:945:in `have_library'
from extconf.rb:19:in `<main>'
extconf failed, exit code 1
Gem files will remain installed in C:/Ruby200/lib/ruby/gems/2.0.0/gems/wdm-0.1.0
for inspection.
Results logged to C:/Ruby200/lib/ruby/gems/2.0.0/extensions/x86-mingw32/2.0.0/wd
m-0.1.0/gem_make.out
An error occurred while installing wdm (0.1.0), and Bundler cannot continue.
Make sure that `gem install wdm -v '0.1.0'` succeeds before bundling.
Do I need to install something before running it.
