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# Copyright 2020 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/chromecast_build.gni")
import("//build/config/chromeos/ui_mode.gni")
import("//build/toolchain/toolchain.gni")
declare_args() {
# Indicates if Ozone is enabled. Ozone is a low-level library layer for Linux
# that does not require X11.
use_ozone =
is_chromeos || (is_chromecast && !is_android) || is_fuchsia || is_linux || is_bsd
}
declare_args() {
# Ozone extra platforms file path. Can be overridden to build out of
# tree ozone platforms.
ozone_extra_path = "//build/config/ozone_extra.gni"
# Select platforms automatically. Turn this off for manual control.
ozone_auto_platforms = use_ozone
# TODO(petermcneeley): Backwards compatiblity support for VM images.
# Remove when deprecated. (https://crbug.com/1122009)
ozone_platform_gbm = -1
# Enable explicit apitrace (https://apitrace.github.io) loading.
# This requires apitrace library with additional bindings.
# See ChromeOS package for details:
# https://chromium-review.googlesource.com/c/chromiumos/overlays/chromiumos-overlay/+/2659419
# Chrome will not start without an apitrace.so library.
# Trace will be saved to /tmp/gltrace.dat file by default. You can
# override it at run time with TRACE_FILE=<path> environment variable.
enable_opengl_apitrace = false
}
declare_args() {
# The platform that will used at runtime by default. This can be overridden
# with the command line flag --ozone-platform=<platform>.
ozone_platform = ""
# Compile the 'cast' platform.
ozone_platform_cast = false
# Compile the 'drm' platform.
ozone_platform_drm = false
# Compile the 'headless' platform.
ozone_platform_headless = false
# Compile the 'scenic' platform.
ozone_platform_scenic = false
# Compile the 'flatland' platform.
ozone_platform_flatland = false
# Compile the 'x11' platform.
ozone_platform_x11 = false
# Compile the 'wayland' platform.
ozone_platform_wayland = false
# Compile the 'windows' platform.
ozone_platform_windows = false
if (ozone_auto_platforms) {
# Use headless as the default platform unless modified below.
ozone_platform = "headless"
ozone_platform_headless = true
if (is_cast_audio_only) {
# Just use headless for audio-only Cast platforms.
} else if (is_chromecast && !is_fuchsia) {
# Enable the Cast ozone platform on all A/V Cast builds except Fuchsia.
ozone_platform_cast = true
# For visual desktop Chromecast builds, override the default "headless"
# platform with --ozone-platform=x11.
# TODO(halliwell): Create a libcast_graphics implementation for desktop
# using X11, and disable this platform.
if (is_cast_desktop_build && !is_cast_audio_only) {
ozone_platform_x11 = true
} else {
ozone_platform = "cast"
}
} else if (is_chromeos_ash) {
ozone_platform = "x11"
ozone_platform_drm = true
ozone_platform_x11 = true
} else if (is_chromeos_lacros) {
ozone_platform = "wayland"
ozone_platform_wayland = true
} else if (is_linux || is_bsd) {
ozone_platform = "x11"
ozone_platform_wayland = true
ozone_platform_x11 = true
} else if (is_win) {
ozone_platform = "windows"
ozone_platform_windows = true
} else if (is_fuchsia) {
ozone_platform = "scenic"
ozone_platform_scenic = true
ozone_platform_flatland = true
}
}
# TODO(petermcneeley): Backwards compatiblity support for VM images.
# Remove when deprecated. (https://crbug.com/1122009)
if (ozone_platform_gbm != -1) {
ozone_platform_drm = ozone_platform_gbm
}
}
declare_args() {
# Deprecated. Ozone/X11 is default path on Linux now. However, there are still
# some components like remoting, angle, webrtc (desktop capture) that relies
# on this gn arg and on the USE_X11 define. This will be gradually removed
# once all the other places are fixed.
# TODO(1096425): remove use_x11.
use_x11 =
ozone_platform_x11 && (is_linux || is_bsd) && !is_chromecast && !is_chromeos_lacros
}
import(ozone_extra_path)
_ozone_extra_directory = get_path_info(ozone_extra_path, "dir")
# Extra paths to add to targets visibility list.
ozone_external_platform_visibility = [ "$_ozone_extra_directory/*" ]
if (is_a_target_toolchain) {
assert(
use_ozone || !(ozone_platform_cast || ozone_platform_drm ||
ozone_platform_flatland || ozone_platform_headless ||
ozone_platform_x11 || ozone_platform_wayland ||
ozone_platform_windows || ozone_platform_scenic),
"Must set use_ozone to select ozone platforms")
}
# TODO(petermcneeley): Backwards compatiblity support for VM images.
# Remove when deprecated. (https://crbug.com/1122009)
assert(ozone_platform_gbm == -1 || ozone_platform_drm == ozone_platform_gbm)
ozone_platform_gbm = ozone_platform_drm
if (ozone_platform == "gbm") {
ozone_platform = "drm"
}
assert(use_x11 == ozone_platform_x11 || !is_linux || !is_bsd || is_chromecast)
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