# Copyright 2021 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# This has been adapted from https://source.chromium.org/chromium/chromium/src/+/main:build/linux/strip_binary.gni;drc=c220a41e0422d45f1657c28146d32e99cc53640b
# The notable difference is it has an option to compress the debug sections

import("//build/config/clang/clang.gni")
import("//build/toolchain/toolchain.gni")

# Extracts symbols from a binary into a symbol file.
#
# Args:
#   binary_input: Path to the binary containing symbols to extract, e.g.:
#       "$root_out_dir/chrome"
#   symbol_output: Desired output file for symbols, e.g.:
#       "$root_out_dir/chrome.debug"
#   stripped_binary_output: Desired output file for stripped file, e.g.:
#       "$root_out_dir/chrome.stripped"
#   compress_debug_sections: If true, compress the extracted debug sections
template("strip_binary") {
  forward_variables_from(invoker,
                         [
                           "deps",
                           "testonly",
                         ])
  action("${target_name}") {
    llvm_strip_binary = "${clang_base_path}/bin/llvm-strip"
    llvm_objcopy_binary = "${clang_base_path}/bin/llvm-objcopy"
    script = "//electron/build/linux/strip_binary.py"

    if (defined(invoker.stripped_binary_output)) {
      stripped_binary_output = invoker.stripped_binary_output
    } else {
      stripped_binary_output = invoker.binary_input + ".stripped"
    }
    if (defined(invoker.symbol_output)) {
      symbol_output = invoker.symbol_output
    } else {
      symbol_output = invoker.binary_input + ".debug"
    }

    inputs = [
      invoker.binary_input,
      llvm_strip_binary,
      llvm_objcopy_binary,
    ]
    outputs = [
      symbol_output,
      stripped_binary_output,
    ]
    args = [
      "--llvm-strip-binary-path",
      rebase_path(llvm_strip_binary, root_build_dir),
      "--llvm-objcopy-binary-path",
      rebase_path(llvm_objcopy_binary, root_build_dir),
      "--symbol-output",
      rebase_path(symbol_output, root_build_dir),
      "--stripped-binary-output",
      rebase_path(stripped_binary_output, root_build_dir),
      "--binary-input",
      rebase_path(invoker.binary_input, root_build_dir),
    ]

    if (defined(invoker.compress_debug_sections) &&
        invoker.compress_debug_sections) {
      args += [ "--compress-debug-sections" ]
    }
  }
}