# Copyright 2016 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")

assert(is_linux)

declare_args() {
  # Controls whether the build should use the version of libdrm
  # library shipped with the system. In release builds of Chrome OS we
  # use the system version, but when building on dev workstations we
  # bundle it because Ubuntu doesn't ship a usable version.
  use_system_libdrm = false
}

if (!use_system_libdrm) {
  config("libdrm_config") {
    # Define _GNU_SOURCE for vasprintf use in xf86drm.c
    defines = [ "_GNU_SOURCE" ]
    include_dirs = [
      "src",
      "src/include",
      "src/include/drm",
    ]

    # libdrm uses macros defined by <sys/types.h> which are being moved to
    # <sys/sysmacros.h>.  GLIBC headers give a pragma warning in this case.
    # Suppress this warning for now.  This may be removed once
    # https://patchwork.kernel.org/patch/9628231/ lands.
    cflags = [ "-Wno-#pragma-messages" ]
    if (is_clang) {
      cflags += [ "-Wno-enum-conversion" ]
    }
  }

  config("libdrm_exynos_include_config") {
    include_dirs = [ "//third_party/libdrm/src/exynos" ]
  }

  static_library("libdrm") {
    sources = [
      "src/xf86drm.c",
      "src/xf86drmHash.c",
      "src/xf86drmMode.c",
      "src/xf86drmRandom.c",
    ]

    include_dirs = [
      "src",
      "src/include",
    ]
    configs -= [ "//build/config/compiler:chromium_code" ]
    configs += [ "//build/config/compiler:no_chromium_code" ]
    cflags = [
      # xf86drm.c uses readdir_r, which has been deprecated as of
      # glibc-2.24.  This causes a build error when using the Debian
      # Stretch sysroot.
      "-Wno-deprecated-declarations",
    ]

    public_configs = [ ":libdrm_config" ]
  }

  executable("modetest") {
    sources = [
      "src/tests/modetest/buffers.c",
      "src/tests/modetest/buffers.h",
      "src/tests/modetest/cursor.c",
      "src/tests/modetest/cursor.h",
      "src/tests/modetest/modetest.c",
      "src/tests/util/common.h",
      "src/tests/util/format.c",
      "src/tests/util/format.h",
      "src/tests/util/kms.c",
      "src/tests/util/kms.h",
      "src/tests/util/pattern.c",
      "src/tests/util/pattern.h",
    ]

    include_dirs = [
      "src/tests",
      "src/tests/modetest",
    ]

    deps = [
      ":libdrm",
      "//build/config:exe_and_shlib_deps",
    ]
  }
}

if (use_system_libdrm) {
  pkg_config("libdrm_config") {
    packages = [ "libdrm" ]
  }
  group("libdrm") {
    public_configs = [ ":libdrm_config" ]
  }
}