chromium/tools/resources/generate_resource_allowlist.gni

# Copyright 2016 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Generates the final .pak file allowlist that can be used by repack()'s
# repack_allowlist parameter. Used resources are tracked by the toolchain when
# enable_resource_allowlist_generation = true and are stored in the unstripped
# binary's debug info. This action extracts the allowlist from the binary.
#
# Variables
#   input: Path to the unstripped .so file.
#   output: Path to write the output allowlist to.
#
# Example
#   generate_resource_allowlist("pak_allowlist") {
#     deps = [ ":my_shared_lib" ]
#     input = "$root_out_dir/lib.unstripped/libmy_shared_lib$shlib_extension"
#     output = "$target_gen_dir/pak_allowlist.txt"
#   }
template("generate_resource_allowlist") {
  action(target_name) {
    forward_variables_from(invoker,
                           [
                             "deps",
                             "inputs",
                           ])

    script = "//tools/resources/generate_resource_allowlist.py"

    outputs = [ invoker.output ]

    args = [
      "-o",
      rebase_path(invoker.output, root_build_dir),
    ]
    foreach(input, invoker.inputs) {
      args += [ rebase_path(input, root_build_dir) ]
    }

    # This target's dependencies are needed at build time only. Make sure shared
    # library dependencies don't get packaged into the final build.
    metadata = {
      shared_libraries_barrier = []
    }
  }
}