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C:\Users\Steve\barcoden>gem install ruby-debug
Building native extensions. This could take a while...
ERROR: Error installing ruby-debug:
ERROR: Failed to build gem native extension.
C:/Ruby/bin/ruby.exe extconf.rb
creating Makefile
make
'make' is not recognized as an internal or external command,
operable program or batch file.
Gem files will remain installed in C:/Ruby/lib/ruby/gems/1.8/gems/linecache-0.43
for inspection.
Results logged to C:/Ruby/lib/ruby/gems/1.8/gems/linecache-0.43/ext/gem_make.out
C:\Users\Steve\barcoden>