Trouble with RubyInline and VS++

gistfile1.txt

Visual Studio 10
Windows 7

I installed RubyInline without (apparent) issue. Tried this code next:

# stuff.rb
require 'inline'

class Array
  inline :C do |builder|
    builder.c(%Q{
      static VALUE stuff(VALUE self){
        return INT2FIX(7);
      }
    })
  end
end

p [1,2,3,4].stuff

Got this:

c:\Users\djberge\Programming\Ruby\Inline>ruby average.rb
cl : Command line warning D9035 : option 'o' has been deprecated and will be removed in a
future release
cl : Command line warning D9035 : option 'o' has been deprecated and will be removed in a
future release
cl : Command line warning D9035 : option 'o' has been deprecated and will be removed in a
future release
cl : Command line warning D9035 : option 'o' has been deprecated and will be removed in a
future release
cl : Command line warning D9035 : option 'o' has been deprecated and will be removed in a
future release
cl : Command line warning D9002 : ignoring unknown option '-incremental:no'
cl : Command line warning D9002 : ignoring unknown option '-debug'
cl : Command line warning D9002 : ignoring unknown option '-dll'
cl : Command line warning D9002 : ignoring unknown option '-incremental:no'
cl : Command line warning D9002 : ignoring unknown option '-debug'
cl : Command line warning D9002 : ignoring unknown option '-Lc:/usr/lib'
cl : Command line warning D9024 : unrecognized source file type '$(LIBPATH)', object file
assumed
c:/usr/lib/ruby/gems/1.9.1/gems/RubyInline-3.11.2/lib/inline.rb:599:in `build': error exec
uting "cl -nologo -LD  -incremental:no -debug -opt:ref -opt:icf -dll $(LIBPATH)  -MD -Zi -
W2 -wd4996 -we4028 -we4142 -O2sy-  -Zm600 -incremental:no -debug -opt:ref -opt:icf -I c:/u
sr/include/ruby-1.9.1 -I c:/usr/include/ruby-1.9.1/i386-mswin32_100 -I c:/usr/include -Lc:
/usr/lib -o \"C:/Users/djberge/.ruby_inline/ruby-1.9.1/Inline_Array_c13d88cb4cb02003daedb8
a84e5d272a.so\" \"C:/Users/djberge/.ruby_inline/ruby-1.9.1/Inline_Array_c13d88cb4cb02003da
edb8a84e5d272a.c\"   -link /LIBPATH:\"c:/usr/lib\" /DEFAULTLIB:\"msvcr100-ruby191.lib\" /I
NCREMENTAL:no /EXPORT:Init_Inline_Array_c13d88cb4cb02003daedb8a84e5d272a": pid 12248 exit
2 (CompilationError)
Renamed C:/Users/djberge/.ruby_inline/ruby-1.9.1/Inline_Array_c13d88cb4cb02003daedb8a84e5d
272a.c to C:/Users/djberge/.ruby_inline/ruby-1.9.1/Inline_Array_c13d88cb4cb02003daedb8a84e
5d272a.c.bad
        from c:/usr/lib/ruby/gems/1.9.1/gems/RubyInline-3.11.2/lib/inline.rb:830:in `inlin
e'
        from average.rb:4:in `<class:Array>'
        from average.rb:3:in `<main>'