chrome/browser/browser_switcher/bho/BUILD.gn

# Copyright 2019 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/config/compiler/compiler.gni")
import("//build/toolchain/win/midl.gni")
import("//testing/test.gni")

assert(is_win)
assert(target_cpu == "x86" || target_cpu == "x64")

declare_args() {
  # If true, compile a BHO that doesn't depend on the CRT to significantly
  # minimize binary size.
  use_mini_bho = false
}

shared_library("browser_switcher_bho") {
  if (current_cpu == "x64") {
    # Name the 32-bit and 64-bit output differently, since they'll be copied to
    # the same directory.
    output_name = "browser_switcher_bho_64"
  }

  visibility = [
    ":browser_switcher_dlls",
    ":copy_browser_switcher_binaries",
  ]

  defines = [
    # Needed to build COM objects that will be hosted in a DLL.
    "_WINDLL",
  ]

  if (use_mini_bho) {
    configs += [ "//build/config/win:sdk_link" ]

    no_default_deps = true

    libs = [
      # For buffer overflow checks with the /GS flag.
      "bufferoverflowU.lib",
    ]
    ldflags = [
      "/NODEFAULTLIB",
      "/ENTRY:DllMain",
    ]
  }

  # TODO(nicolaso): avoid code duplication, by using BrowserSwitcherSitelist and
  # AlternativeBrowserDriver classes from chrome/browser_switcher/.
  if (use_mini_bho) {
    sources = [
      "mini_bho.cc",
      "mini_bho.def",
      "mini_bho_util.cc",
      "mini_bho_util.h",
    ]
  } else {
    sources = [
      "//base/win/atl.h",
      "bho.cc",
      "bho.h",
      "browser_switcher_core.cc",
      "browser_switcher_core.h",
      "ie_bho.cc",
      "ie_bho.def",
      "logging.cc",
      "logging.h",
      "resource.h",
    ]
  }
  deps = [ ":ie_bho_idl" ]
}

test("browser_switcher_bho_unittests") {
  sources = [
    "mini_bho_util.cc",
    "mini_bho_util.h",
    "mini_bho_util_unittest.cc",
  ]
  deps = [
    "//base",
    "//base/test:test_support",
    "//testing/gtest",
  ]
}

if (is_clang) {
  browser_switcher_x64_toolchain = "//build/toolchain/win:win_clang_x64"
  browser_switcher_x86_toolchain = "//build/toolchain/win:win_clang_x86"
} else {
  browser_switcher_x64_toolchain = "//build/toolchain/win:x64"
  browser_switcher_x86_toolchain = "//build/toolchain/win:x86"
}

browser_switcher_x64_label =
    ":browser_switcher_bho($browser_switcher_x64_toolchain)"
browser_switcher_x86_label =
    ":browser_switcher_bho($browser_switcher_x86_toolchain)"

copy("copy_browser_switcher_binaries") {
  # Make sure we have both bitnesses in the root out directory.
  if (target_cpu == "x86") {
    cross_build_label = browser_switcher_x64_label
    cross_build_dll = "browser_switcher_bho_64.dll"
  } else if (target_cpu == "x64") {
    cross_build_label = browser_switcher_x86_label
    cross_build_dll = "browser_switcher_bho.dll"
  }

  cross_build_out_dir = get_label_info(cross_build_label, "root_out_dir")

  sources = [ "$cross_build_out_dir/$cross_build_dll" ]
  if (symbol_level > 0) {
    sources += [ "$cross_build_out_dir/$cross_build_dll.pdb" ]
  }

  outputs = [ "$root_out_dir/{{source_file_part}}" ]
  deps = [
    browser_switcher_x64_label,
    browser_switcher_x86_label,
  ]
}

group("browser_switcher_dlls") {
  # Build a DLL for each bitness, and put them in the root out dir.
  deps = [
    ":copy_browser_switcher_binaries",
    browser_switcher_x64_label,
    browser_switcher_x86_label,
  ]
}

midl("ie_bho_idl") {
  sources = [ "ie_bho_idl.idl" ]

  # We have a custom output directory (that excludes the toolchain details).
  generated_dir =
      "//third_party/win_build_output/midl/chrome/browser/browser_switcher/bho"
}