# Copyright (c) 2013 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/linux/pkg_config.gni")
import("//build/config/features.gni")
import("//build/config/sysroot.gni")
import("//build/config/ui.gni")
import("//tools/generate_library_loader/generate_library_loader.gni")

gypi_values = exec_script("//build/gypi_to_gn.py",
                          [ rebase_path("../../linux/system.gyp") ],
                          "scope",
                          [ "../../linux/system.gyp" ])

config("sdk") {
  if (sysroot != "") {
    cflags = [ "--sysroot=" + sysroot ]
    ldflags = [ "--sysroot=" + sysroot ]

    # Need to get some linker flags out of the sysroot.
    ldflags += [ exec_script("sysroot_ld_path.py",
                             [
                               rebase_path("//build/linux/sysroot_ld_path.sh",
                                           root_build_dir),
                               sysroot,
                             ],
                             "value") ]
  }

  # Set here because OS_CHROMEOS cannot be autodetected in build_config.h like
  # OS_LINUX and the like.
  if (is_chromeos) {
    defines = [ "OS_CHROMEOS" ]
  }
}

pkg_config("atk") {
  packages = [ "atk" ]
  atk_lib_dir = exec_script(pkg_config_script,
                            [
                              "--libdir",
                              "atk",
                            ],
                            "string")
  defines = [ "ATK_LIB_DIR=\"$atk_lib_dir\"" ]
}

# gn orders flags on a target before flags from configs. The default config
# adds -Wall, and these flags have to be after -Wall -- so they need to come
# from a config and can't be on the target directly.
config("atk_warnings") {
  # glib uses the pre-c++11 typedef-as-static_assert hack.
  cflags = [ "-Wno-unused-local-typedef" ]
}

config("fontconfig") {
  libs = [ "fontconfig" ]
}

pkg_config("freetype2") {
  packages = [ "freetype2" ]
}

pkg_config("pangocairo") {
  packages = [ "pangocairo" ]
}

pkg_config("pangoft2") {
  packages = [ "pangoft2" ]
}

# Note: if your target also depends on //dbus, you don't need to add this
# config (it will get added automatically if you depend on //dbus).
pkg_config("dbus") {
  packages = [ "dbus-1" ]
}

if (use_evdev_gestures) {
  pkg_config("libevdev-cros") {
    packages = [ "libevdev-cros" ]
  }

  pkg_config("libgestures") {
    packages = [ "libgestures" ]
  }
}

config("x11") {
  libs = [
    "X11",
    "Xcomposite",
    "Xcursor",
    "Xdamage",
    "Xext",
    "Xfixes",
    "Xi",
    "Xrender",
    "Xtst",
  ]
}

config("xcomposite") {
  libs = [ "Xcomposite" ]
}

config("xext") {
  libs = [ "Xext" ]
}

config("xrandr") {
  libs = [ "Xrandr" ]
}

config("xscrnsaver") {
  libs = [ "Xss" ]
}

config("xfixes") {
  libs = [ "Xfixes" ]
}

config("libcap") {
  libs = [ "cap" ]
}

config("xi") {
  libs = [ "Xi" ]
}

config("xtst") {
  libs = [ "Xtst" ]
}

config("libresolv") {
  libs = [ "resolv" ]
}

# CrOS doesn't install GTK, gconf or any gnome packages.
if (!is_chromeos) {
  # These packages should _only_ be expected when building for a target.
  # If these extra checks are not run, gconf is required when building host
  # tools for a CrOS build.
  if (current_toolchain == default_toolchain) {
    pkg_config("gconf") {
      packages = [ "gconf-2.0" ]
      defines = [ "USE_GCONF" ]
    }
  }
}

# If brlapi isn't needed, don't require it to be installed.
if (use_brlapi) {
  config("brlapi_config") {
    defines = [ "USE_BRLAPI" ]
  }

  # TODO(GYP) linux_link_brlapi support. Is this needed?
  generate_library_loader("libbrlapi") {
    name = "LibBrlapiLoader"
    output_h = "libbrlapi.h"
    output_cc = "libbrlapi_loader.cc"
    header = "<brlapi.h>"
    config = ":brlapi_config"

    functions = gypi_values.libbrlapi_functions
  }
}

pkg_config("gio_config") {
  packages = [ "gio-2.0" ]

  # glib >=2.40 deprecate g_settings_list_schemas in favor of
  # g_settings_schema_source_list_schemas. This function is not available on
  # earlier versions that we still need to support (specifically, 2.32), so
  # disable the warning with the GLIB_DISABLE_DEPRECATION_WARNINGS define.
  # TODO(mgiuca): Remove this suppression when we drop support for Ubuntu 13.10
  # (saucy) and earlier. Update the code to use
  # g_settings_schema_source_list_schemas instead.
  defines = [
    "USE_GIO",
    "GLIB_DISABLE_DEPRECATION_WARNINGS",
  ]

  # TODO(brettw) Theoretically I think ignore_libs should be set so that we
  # don't link directly to GIO and use the loader generated below. But the gio
  # target in GYP doesn't make any sense to me and appears to link directly to
  # GIO in addition to making a loader. This this uncommented, the link in
  # component build fails, so I think this is closer to the GYP build.
  #ignore_libs = true  # Loader generated below.
}

if (is_desktop_linux) {
  # This generates a target named "gio".
  generate_library_loader("gio") {
    name = "LibGioLoader"
    output_h = "libgio.h"
    output_cc = "libgio_loader.cc"
    header = "<gio/gio.h>"
    config = ":gio_config"

    functions = gypi_values.libgio_functions
  }
}

# This generates a target named "libpci".
generate_library_loader("libpci") {
  name = "LibPciLoader"
  output_h = "libpci.h"
  output_cc = "libpci_loader.cc"
  header = "<pci/pci.h>"

  functions = gypi_values.libpci_functions
}

# Looking for libspeechd? Use //third_party/speech-dispatcher

# This generates a target named "udev0_loader".
generate_library_loader("udev0_loader") {
  name = "LibUdev0Loader"
  output_h = "libudev0.h"
  output_cc = "libudev0_loader.cc"
  header = "\"third_party/libudev/libudev0.h\""

  functions = gypi_values.libudev_functions
}

# This generates a target named "udev1_loader".
generate_library_loader("udev1_loader") {
  name = "LibUdev1Loader"
  output_h = "libudev1.h"
  output_cc = "libudev1_loader.cc"
  header = "\"third_party/libudev/libudev1.h\""

  functions = gypi_values.libudev_functions
}

group("udev") {
  deps = [
    ":udev0_loader",
    ":udev1_loader",
  ]
}