build/cpp/verify_public_headers.gni

# Copyright 2022 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Verifies that there are no duplicate headers in an SDK library declaration.
#
# Parameters
#
#   headers (required)
#     A list of headers.
#
template("verify_public_headers") {
  unique = []
  foreach(header, invoker.headers) {
    if (unique + [ header ] - [ header ] != unique) {
      print("sdk_shared_library",
            target_name,
            "called with duplicate headers:",
            header)
      assert(false)
    }
    unique += [ header ]
  }
  not_needed([ "target_name" ])
  not_needed([ "unique" ])
}