third_party/icu/BUILD.gn

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

declare_args() {
  skia_use_system_icu = is_official_build
}

import("../third_party.gni")
import("icu.gni")

if (skia_use_system_icu) {
  system("icu") {
    libs = [ "icuuc" ]
    defines = [ "U_USING_ICU_NAMESPACE=0" ]
  }
} else {
  data_assembly = "$target_gen_dir/icudtl_dat.S"
  data_dir = "../externals/icu/"
  if (is_android) {
    data_dir += "android"
  } else if (is_ios) {
    data_dir += "ios"
  } else {
    data_dir += "common"
  }
  action("make_data_assembly") {
    script = "../externals/icu/scripts/make_data_assembly.py"
    inputs = [
      "$data_dir/icudtl.dat",
    ]
    outputs = [
      "$data_assembly",
    ]
    args = [
      rebase_path(inputs[0], root_build_dir),
      rebase_path(data_assembly, root_build_dir),
    ]
    if (is_mac || is_ios) {
      args += [ "--mac" ]
    }
  }

  third_party("icu") {
    public_include_dirs = [
      "../externals/icu/source/common",
      "../externals/icu/source/i18n",
      ".",
    ]
    public_defines = [ "U_USING_ICU_NAMESPACE=0" ]
    configs -= [ "//gn:no_rtti" ]
    defines = [
      # http://userguide.icu-project.org/howtouseicu
      "U_COMMON_IMPLEMENTATION",
      "U_STATIC_IMPLEMENTATION",
      "U_ENABLE_DYLOAD=0",
      "U_I18N_IMPLEMENTATION",
    ]
    sources = icu_sources
    if (is_win) {
      deps = [
        ":icudata",
      ]
      public_defines += [
        "U_NOEXCEPT=",
        "U_STATIC_IMPLEMENTATION",
      ]
      libs = [ "Advapi32.lib" ]
      sources += [ "../externals/icu/source/stubdata/stubdata.cpp" ]
    } else {
      sources += [ "$data_assembly" ]
      deps = [
        ":make_data_assembly",
      ]
    }
  }
  if (is_win) {
    copy("icudata") {
      sources = [
        "../externals/icu/windows/icudt.dll",
      ]
      outputs = [
        "$root_out_dir/icudt.dll",
      ]
      data = outputs
    }
  }
}