message: Wno-unused-result on GCC
diff: @@ -170,6 +170,8 @@ def configure(ctx):
  cxxflags = ['-g', '-Wall', '-Wno-sign-compare', '-Werror']
  if ctx.env.CXX_NAME == 'gcc':
  cxxflags.append('-Wno-return-type')
  + # Otherwise (void)write(...) => -Werror=unused-result
  + cxxflags.append('-Wno-unused-result')
  if all(not x.startswith('-std=') for x in ctx.env.CXXFLAGS):
  cxxflags.append('-std=c++11')
  