BUILD.gn

# Copyright (c) 2018 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.

# Flags specified here must not impact ABI. Code compiled with and without these
# opts will be linked together, and in some cases headers compiled with and
# without these options will be part of the same program.

import("//build/toolchain/toolchain.gni")
import("//testing/test.gni")
import("//third_party/abseil-cpp/absl.gni")

config("absl_component_build") {
  defines = [ "ABSL_CONSUME_DLL" ]
}

# TODO(mbonadei): WebRTC tests and binaries use absl flags but they are
# marked testonly because we don't want them to be usable in Chromium.
# Add an absl_flags component which depends on the main absl component.
component("absl") {
  if (is_component_build) {
    public_configs = [ ":absl_component_build" ]

    if (is_win) {
      if (target_cpu == "x64") {
        if (is_debug) {
          sources = [ "symbols_x64_dbg.def" ]
        } else {
          sources = [ "symbols_x64_rel.def" ]
        }
      }
      if (target_cpu == "x86") {
        if (is_debug) {
          sources = [ "symbols_x86_dbg.def" ]
        } else {
          sources = [ "symbols_x86_rel.def" ]
        }
      }
      if (target_cpu == "arm64") {
        if (is_debug) {
          sources = [ "symbols_arm64_dbg.def" ]
        } else {
          sources = [ "symbols_arm64_rel.def" ]
        }
      }
    }
  }

  public_deps = [
    "//third_party/abseil-cpp/absl/algorithm:container",
    "//third_party/abseil-cpp/absl/base:config",
    "//third_party/abseil-cpp/absl/base:core_headers",
    "//third_party/abseil-cpp/absl/container:inlined_vector",

    # Disabled because of static initializers:
    # "//third_party/abseil-cpp/absl/debugging:failure_signal_handler",
    # "//third_party/abseil-cpp/absl/debugging:symbolize",

    "//third_party/abseil-cpp/absl/hash",
    "//third_party/abseil-cpp/absl/memory",
    "//third_party/abseil-cpp/absl/meta:type_traits",
    "//third_party/abseil-cpp/absl/strings",
    "//third_party/abseil-cpp/absl/types:optional",
    "//third_party/abseil-cpp/absl/types:variant",
  ]

  # Usage of Abseil in Chromium is guarded by an explicit opt-in list, before
  # adding projects to this list please reach out to cxx@chromium.org and CC:
  # - https://cs.chromium.org/chromium/src/third_party/abseil-cpp/OWNERS
  #
  # More information can be found at:
  # https://docs.google.com/document/d/1DgS1-A3rzboTLjpf4m1sqkJgWjnY_Ru2dokk1X1vBDU
  visibility = absl_visibility
}

group("default") {
  deps = [
    "absl/types:any",
    "absl/types:bad_any_cast",
    "absl/types:bad_optional_access",
    "absl/types:optional",
    "absl/types:span",
  ]
}

config("absl_include_config") {
  include_dirs = [ "." ]
}

config("absl_define_config") {
  defines = [ "ABSL_ALLOCATOR_NOTHROW=1" ]
}

config("absl_default_cflags_cc") {
  cflags_cc = []
  if (is_clang) {
    cflags_cc += [
      # TODO(crbug.com/588506): Explicitly enable conversion warnings.
      "-Wbool-conversion",
      "-Wconstant-conversion",
      "-Wenum-conversion",
      "-Wint-conversion",
      "-Wliteral-conversion",
      "-Wnon-literal-null-conversion",
      "-Wnull-conversion",
      "-Wobjc-literal-conversion",
      "-Wno-sign-conversion",
      "-Wstring-conversion",
    ]
    if (!is_nacl && !use_xcode_clang) {
      cflags_cc += [ "-Wbitfield-enum-conversion" ]
    }
  }
  if (is_win) {
    cflags_cc += [
      "/wd4005",  # macro-redefinition
      "/wd4018",  # sign-compare
      "/wd4068",  # unknown pragma
      "/wd4702",  # unreachable code
    ]
  }
}

config("absl_test_cflags_cc") {
  cflags_cc = []
  if (is_clang || !is_win) {
    cflags_cc += [
      "-Wno-conversion-null",
      "-Wno-missing-declarations",
      "-Wno-sign-compare",
      "-Wno-unused-function",
      "-Wno-unused-parameter",
      "-Wno-unused-private-field",
    ]
  }
  if (is_win) {
    cflags_cc += [
      "/wd4018",  # signed/unsigned mismatch
      "/wd4101",  # unreferenced local variable
    ]
  }
}

if (!is_component_build) {
  test("absl_tests") {
    testonly = true
    deps = [
      "absl/algorithm:algorithm_test",
      "absl/algorithm:container_test",
      "absl/base:config_test",
      "absl/container:inlined_vector_test",
      "absl/memory:memory_test",
      "absl/meta:type_traits_test",
      "absl/strings:ascii_test",
      "absl/strings:match_test",
      "absl/strings:str_replace_test",
      "absl/strings:string_view_test",

      # TODO(mbonadei): On iOS, gtest doesn't support death tests. Fix upstream
      # Abseil to use EXPECT_DEATH_IF_SUPPORTED instead of EXPECT_DEATH.
      # "absl/types:optional_test",
      # "absl/types:variant_test",

      "//third_party/googletest:gtest_main",
    ]
  }
}