[graphics/gimp-ufraw]
  This package needs a C99 compiler.

  # This package uses too much C99 code to be patched.
  GCC_REQD+=              3.0
  BUILDLINK_TRANSFORM+=   rm:-std=gnu99

That change looks ok; the ufraw author said as much when I pushed one
patch into the upstream repo.  It seems like there should be a way to
declare that a C99 compiler is needed, rather than requiring gcc.

-- 
        Greg Troxel <gdt@ir.bbn.com>