skia2/gn/BUILDCONFIG.gn
mtklein 7d6fb2c92d GN: Android
Once you have downloaded an android NDK, you can set the ndk GN arg to use it.
E.g. my gn.args looks like:
  is_debug = false
  ndk = "/opt/android-ndk"

This should be enough to get you going for an arm64 build.  You ought to be able to tweak that to other architectures by changing target_cpu to "arm", "x86", "x86-64", etc.  That won't quite work until I follow this up a bit, but the skeleton is there.

This is enough to get me compiled, linked, and running to completion on my N5x.

BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2275983004

Review-Url: https://codereview.chromium.org/2275983004
2016-08-25 14:50:44 -07:00

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# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# It's best to keep the names and defaults of is_foo flags consistent with Chrome.
declare_args() {
is_debug = true
is_component_build = false
ndk = ""
}
# Platform detection
if (target_os == "") {
target_os = host_os
if (ndk != "") {
target_os = "android"
}
}
if (current_os == "") {
current_os = target_os
}
if (target_cpu == "") {
target_cpu = host_cpu
if (ndk != "") {
target_cpu = "arm64"
}
}
if (current_cpu == "") {
current_cpu = target_cpu
}
is_android = current_os == "android"
is_fuchsia = current_os == "fuchsia"
is_ios = current_os == "ios"
is_linux = current_os == "linux"
is_mac = current_os == "mac"
is_win = current_os == "win"
is_posix = !is_win
if (is_android) {
ndk_host = ""
ndk_target = ""
ndk_platform = ""
ndk_stdlib = ""
if (host_os == "linux" && host_cpu == "x64") {
ndk_host = "linux-x86_64"
}
if (target_cpu == "arm64") {
ndk_target = "aarch64-linux-android"
ndk_platform = "android-21/arch-arm64"
ndk_stdlib = "arm64-v8a"
}
}
# A component is either a static or a shared library.
template("component") {
_component_mode = "static_library"
if (is_component_build) {
_component_mode = "shared_library"
}
target(_component_mode, target_name) {
forward_variables_from(invoker, "*")
}
}
# Default configs
default_configs = [
"//gn:default",
"//gn:no_rtti",
]
if (!is_debug) {
default_configs += [ "//gn:release" ]
}
set_defaults("executable") {
configs = default_configs + [ "//gn:executable" ]
}
set_defaults("source_set") {
configs = default_configs
}
set_defaults("static_library") {
configs = default_configs
}
set_defaults("shared_library") {
configs = default_configs
}
set_defaults("component") {
configs = default_configs
if (!is_component_build) {
complete_static_lib = true
}
}
# For now, we support GCC-like toolchains, including Clang.
set_default_toolchain("//gn:gcc_like")