Compiler projects using llvm
declare_args() {
  if (host_os == "win") {
    # On Windows, path to a directory containing zlib headers and zlib.lib.
    zlib_path = ""
  }
}

declare_args() {
  # Whether to include code that links against zlib.
  llvm_enable_zlib = host_os != "win" || zlib_path != ""
}