rake RUBYARCHDIR=C:/Ruby/lib/ruby/gems/1.8/gems/ruby-opengl-0.60.1/lib RUBYLIBDIR=C:/Ruby/lib/ruby/gems/1.8/gems/ruby-opengl-0.60.1/lib
ruby mkrf_conf.rb
(in C:/Ruby/lib/ruby/gems/1.8/gems/ruby-opengl-0.60.1)
call rake --nosearch
cl -nologo  -MD -Zi -O2b2xg- -G6  -DWIN32 -DRUBY_VERSION=186  -IC:/Ruby/include -IC:/Ruby/lib/ruby/1.8/i386-mswin32 -IC:/Ruby/lib/ruby/site_ruby/1.8 -I. -c gl-1.0-1.1.c
(in C:/Ruby/lib/ruby/gems/1.8/gems/ruby-opengl-0.60.1/ext/gl)
'cl' is not recognized as an internal or external command,
operable program or batch file.
rake aborted!
Command failed with status (1): [cl -nologo  -MD -Zi -O2b2xg- -G6  -DWIN32 ...]

(See full trace by running task with --trace)
rake aborted!
Command failed with status (1): [call rake --nosearch...]

(See full trace by running task with --trace)