components/nacl/loader/BUILD.gn

# Copyright 2015 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/config/c++/c++.gni")
import("//build/config/chromeos/ui_mode.gni")
import("//build/config/compiler/compiler.gni")
import("//build/config/nacl/config.gni")
import("//components/nacl/features.gni")
import("//components/nacl/toolchain.gni")
import("//testing/test.gni")

assert(enable_nacl)

if (current_cpu != "arm64") {
  # This is separate so it can be used by ../broker:nacl64.
  source_set("minimal") {
    sources = [
      "nacl_ipc_adapter.cc",
      "nacl_ipc_adapter.h",
      "nacl_listener.cc",
      "nacl_listener.h",
      "nacl_main.cc",
      "nacl_main_platform_delegate.h",
      "nacl_trusted_listener.cc",
      "nacl_trusted_listener.h",
      "nacl_validation_db.h",
      "nacl_validation_query.cc",
      "nacl_validation_query.h",
    ]

    deps = [
      ":minimal_content_dummy",
      "//base",
      "//components/nacl/common:minimal",
      "//components/nacl/common:mojo_bindings",
      "//content/public/common:main_function_params",
      "//crypto",
      "//ipc",
      "//mojo/core/embedder",
      "//native_client/src/trusted/service_runtime:sel_main_chrome",
      "//ppapi/c",
      "//ppapi/proxy:ipc",
      "//sandbox",
      "//services/service_manager/public/cpp",
    ]

    if (is_win) {
      sources += [ "nacl_main_platform_delegate_win.cc" ]
    }

    if (is_mac) {
      sources += [ "nacl_main_platform_delegate_mac.mm" ]
    }

    if (is_linux || is_chromeos) {
      sources += [ "nacl_main_platform_delegate_linux.cc" ]
    }
  }

  # This exists just to make 'gn check' happy with :minimal and
  # :nacl_helper_win_64 (below).  They can't depend on //content/public/common
  # or anything like that, because that would bring in lots more than counts
  # as "minimal" (stuff that should not be in the nacl64.exe build).
  source_set("minimal_content_dummy") {
    check_includes = false

    sources = []

    if (is_win) {
      sources += [ "//content/public/common/sandbox_init_win.h" ]
    }
    if (is_linux || is_chromeos) {
      sources += [ "//content/public/common/zygote/sandbox_support_linux.h" ]
    }
  }

  source_set("loader") {
    public_deps = [ ":minimal" ]
    deps = [
      "//components/nacl/common",
      "//ppapi/shared_impl",
      "//services/service_manager/public/cpp",
    ]

    data_deps = [
      "//ppapi/native_client:irt",
      "//ppapi/native_client/src/untrusted/pnacl_support_extension",
    ]
  }

  test("nacl_loader_unittests") {
    sources = [
      "nacl_ipc_adapter_unittest.cc",
      "nacl_validation_query_unittest.cc",
      "run_all_unittests.cc",
    ]

    deps = [
      ":loader",
      "//base/test:test_support",
      "//ipc:test_support",
      "//ppapi/c",
      "//testing/gtest",
    ]
  }
}

if ((is_linux || is_chromeos) && current_cpu != "arm64") {
  executable("nacl_helper") {
    sources = [
      "nacl_helper_linux.cc",
      "nacl_helper_linux.h",
    ]

    deps = [
      ":loader",
      "//base",
      "//components/nacl/common:switches",
      "//components/nacl/loader/sandbox_linux",
      "//content/public/common:content_descriptors",
      "//content/public/common:main_function_params",
      "//content/public/common:sandbox_support_linux",
      "//crypto",
      "//ipc",
      "//mojo/core/embedder",
      "//sandbox/linux:sandbox_services",
      "//sandbox/policy",
      "//url/ipc:url_ipc",
    ]

    if (is_chromeos) {
      # NaCl is not working with compiler-rt in ChromeOS.
      # Force libgcc as a workaround. See https://crbug.com/761103
      ldflags = [
        "-rtlib=libgcc",
        "--unwindlib=libgcc",
      ]

      # nacl_helper needs to link with libgcc_s. We already have -lgcc_s in
      # the final link command line, but it was placed within "--as-needed"
      # with the result that the dependency gets dropped. Similarly, we need
      # to add this via "ldflags" and not "libs" because libraries added via
      # the latter are also placed within an "--as-needed"'.
      # See https://crbug.com/884017
      ldflags += [ "-lgcc_s" ]
    }

    # The only symbols that nacl_helper needs to export are those specified by
    # its direct dependencies, so -rdynamic would only serve to unnecessarily
    # increase the binary size.
    if (!export_libcxxabi_from_executables) {
      configs -= [ "//build/config/compiler:export_dynamic" ]
    }

    data_deps =
        [ "//native_client/src/trusted/service_runtime/linux:bootstrap" ]

    # In order to build ARM32 nacl_helper for ARM64 Chrome OS, we need to
    # minimize the dependencies on system libraries, including indirect
    # dependencies through other parts of Chrome (see
    # https://crbug.com/1339021).
    assert_no_deps = [
      "//content/public/common",
      "//media/audio",
    ]

    if (is_minimal_toolchain) {
      assert_no_deps += [
        "//net",
        "//skia",
      ]
    }
  }

  # For setting up nacl_helper.
  source_set("nacl_helper_integration") {
    public = [ "nacl_helper_linux.h" ]
    data_deps = [ ":nacl_helper" ]
  }
}

# In ARM64 Chrome, use the ARM32 versions of nacl_helper and
# nacl_helper_bootstrap.  Copy them from the build directory for the
# ARM32 toolchain.
if ((is_linux || is_chromeos) && current_cpu == "arm64") {
  if (default_toolchain == "//build/toolchain/cros:target") {
    toolchain = "//build/toolchain/cros:nacl_helper_arm32"
  } else {
    toolchain = "//build/toolchain/linux:clang_arm"
  }

  copy("nacl_helper") {
    label = ":nacl_helper($toolchain)"
    out_dir = get_label_info(label, "root_out_dir")
    sources = [ "${out_dir}/nacl_helper" ]
    outputs = [ "${root_out_dir}/nacl_helper" ]
    deps = [ label ]
    data_deps = [
      ":nacl_helper_bootstrap",
      "//ppapi/native_client/src/untrusted/pnacl_support_extension",
    ]
  }

  copy("nacl_helper_bootstrap") {
    label = "//native_client/src/trusted/service_runtime/linux:bootstrap($toolchain)"
    out_dir = get_label_info(label, "root_out_dir")
    sources = [ "${out_dir}/nacl_helper_bootstrap" ]
    outputs = [ "${root_out_dir}/nacl_helper_bootstrap" ]
    deps = [ label ]
  }
}

if (is_win && target_cpu == "x86" && current_cpu == "x64") {
  source_set("nacl_helper_win_64") {
    sources = [
      "nacl_helper_win_64.cc",
      "nacl_helper_win_64.h",
    ]

    deps = [
      ":minimal",
      ":minimal_content_dummy",
      "//base",
      "//components/nacl/broker",
      "//components/nacl/common:switches",
      "//content/public/common:main_function_params",
      "//content/public/common:static_switches",
      "//mojo/core/embedder",
      "//sandbox",
      "//sandbox/policy",
    ]
  }
}