# Copyright 2019 The ANGLE Project Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# See:
# https://chromium.googlesource.com/chromium/src/+/master/third_party/BUILD.gn

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

assert(!is_ios, "This is not used on iOS, don't drag it in unintentionally")

config("system_libjpeg_config") {
  libs = [ "jpeg" ]
  defines = [ "USE_SYSTEM_LIBJPEG" ]
}

config("libjpeg_turbo_config") {
  defines = [ "USE_LIBJPEG_TURBO=1" ]
}

# This is a meta target that forwards to the system's libjpeg,
# third_party/libjpeg, or third_party/libjpeg_turbo depending on the build args
# declared in this file.
group("jpeg") {
  if (use_system_libjpeg) {
    public_configs = [ ":system_libjpeg_config" ]
  } else if (use_libjpeg_turbo) {
    public_deps = [ "//third_party/libjpeg_turbo:libjpeg" ]
    public_configs = [ ":libjpeg_turbo_config" ]
  } else {
    public_deps = [ "//third_party/libjpeg:libjpeg" ]
  }
}

# This is a meta target that forwards include paths only to the system's
# libjpeg, third_party/libjpeg, or third_party/libjpeg_turbo depending on the
# build args declared in this file. This is needed, rarely, for targets that
# need to reference libjpeg without explicitly building it.
group("jpeg_includes") {
  if (use_system_libjpeg) {
    public_configs = [ ":system_libjpeg_config" ]
  } else if (use_libjpeg_turbo) {
    public_configs = [ "//third_party/libjpeg_turbo:libjpeg_config" ]
  } else {
    public_configs = [ "//third_party/libjpeg:libjpeg_config" ]
  }
}