build/extract_symbols.gni

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

# Extracts symbols from a binary into a symbol file using dump_syms.
#
# Args:
#   binary: Path to the binary containing symbols to extract, e.g.:
#       "$root_out_dir/electron"
#   symbol_dir: Desired output directory for symbols, e.g.:
#       "$root_out_dir/breakpad_symbols"

if (host_os == "win") {
  _host_executable_suffix = ".exe"
} else {
  _host_executable_suffix = ""
}

template("extract_symbols") {
  action(target_name) {
    forward_variables_from(invoker,
                           [
                             "deps",
                             "testonly",
                           ])
    assert(defined(invoker.binary), "Need binary to dump")
    assert(defined(invoker.symbol_dir), "Need directory for symbol output")

    dump_syms_label =
        "//third_party/breakpad:dump_syms($host_system_allocator_toolchain)"
    dump_syms_binary = get_label_info(dump_syms_label, "root_out_dir") +
                       "/dump_syms$_host_executable_suffix"

    script = "//electron/build/dump_syms.py"
    inputs = [
      invoker.binary,
      dump_syms_binary,
    ]
    stamp_file = "${target_gen_dir}/${target_name}.stamp"
    outputs = [ stamp_file ]
    args = [
      "./" + rebase_path(dump_syms_binary, root_build_dir),
      rebase_path(invoker.binary, root_build_dir),
      rebase_path(invoker.symbol_dir, root_build_dir),
      rebase_path(stamp_file, root_build_dir),
    ]
    if (defined(invoker.dsym_file)) {
      args += [ rebase_path(invoker.dsym_file, root_build_dir) ]
    }

    if (!defined(deps)) {
      deps = []
    }
    deps += [ dump_syms_label ]
  }
}