Bug #4209: nmake reports warning in ext/ripper
http://redmine.ruby-lang.org/issues/show/4209

ɼ???: Usaku NAKAMURA
?????????: Assigned, ?????: Normal
???????: Nobuyoshi Nakada, ????????: build, Target version: 1.9.3
ruby -v: ruby 1.9.3dev (2010-12-26 trunk 30386) [x64-mswin64_80]

???????????????????

  compiling ripper
  NMAKE : warning U4006: ?????????????義???????????????? : '$<'
  extracting ripper.y from
  compiling compiler ripper.y

nmake????????????????????$<????義????????????????????????????
?????? r29748 ????????????????????????


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