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#!/usr/bin/env python
#
# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Generate Android.bp for Skia from GN configuration.
from __future__ import print_function
import os
import pprint
import string
import subprocess
import tempfile
import gn_to_bp_utils
# First we start off with a template for Android.bp,
# with holes for source lists and include directories.
bp = string.Template('''// This file is autogenerated by gn_to_bp.py.
// To make changes to this file, follow the instructions on skia.org for
// downloading Skia and submitting changes. Modify gn_to_bp.py (or the build
// files it uses) and submit. The autoroller will then create the updated
// Android.bp. Or ask a Skia engineer for help.
package {
default_applicable_licenses: ["external_skia_license"],
}
// Added automatically by a large-scale-change that took the approach of
// 'apply every license found to every target'. While this makes sure we respect
// every license restriction, it may not be entirely correct.
//
// e.g. GPL in an MIT project might only apply to the contrib/ directory.
//
// Please consider splitting the single license below into multiple licenses,
// taking care not to lose any license_kind information, and overriding the
// default license using the 'licenses: [...]' property on targets as needed.
//
// For unused files, consider creating a 'fileGroup' with "//visibility:private"
// to attach the license to, and including a comment whether the files may be
// used in the current project.
//
// large-scale-change included anything that looked like it might be a license
// text as a license_text. e.g. LICENSE, NOTICE, COPYING etc.
//
// Please consider removing redundant or irrelevant files from 'license_text:'.
//
// large-scale-change filtered out the below license kinds as false-positives:
// SPDX-license-identifier-CC-BY-NC
// SPDX-license-identifier-GPL-2.0
// SPDX-license-identifier-LGPL-2.1
// SPDX-license-identifier-OFL:by_exception_only
// See: http://go/android-license-faq
license {
name: "external_skia_license",
visibility: [":__subpackages__"],
license_kinds: [
"SPDX-license-identifier-Apache-2.0",
"SPDX-license-identifier-BSD",
"SPDX-license-identifier-CC0-1.0",
"SPDX-license-identifier-FTL",
"SPDX-license-identifier-MIT",
"SPDX-license-identifier-MPL",
"legacy_unencumbered",
],
license_text: [
"LICENSE",
"NOTICE",
],
}
cc_defaults {
name: "skia_defaults",
cflags: [
$cflags
],
cppflags:[
$cflags_cc
],
export_include_dirs: [
$export_includes
],
local_include_dirs: [
$local_includes
],
arch: {
arm: {
srcs: [
$arm_srcs
],
neon: {
srcs: [
$arm_neon_srcs
],
},
},
arm64: {
srcs: [
$arm64_srcs
],
},
x86: {
srcs: [
$x86_srcs
],
},
x86_64: {
srcs: [
$x86_srcs
],
},
},
target: {
android: {
srcs: [
"third_party/vulkanmemoryallocator/GrVulkanMemoryAllocator.cpp",
],
local_include_dirs: [
"third_party/vulkanmemoryallocator/",
],
},
},
}
cc_library_static {
// Smaller version of Skia, without e.g. codecs, intended for use by RenderEngine.
name: "libskia_renderengine",
defaults: ["skia_defaults",
"skia_renderengine_deps"],
srcs: [
$renderengine_srcs
],
local_include_dirs: [
"renderengine",
],
export_include_dirs: [
"renderengine",
],
}
cc_library_static {
name: "libskia",
host_supported: true,
cppflags:[
// Exceptions are necessary for SkRawCodec.
// FIXME: Should we split SkRawCodec into a separate target so the rest
// of Skia need not be compiled with exceptions?
"-fexceptions",
],
srcs: [
$srcs
],
target: {
android: {
srcs: [
$android_srcs
],
local_include_dirs: [
"android",
],
export_include_dirs: [
"android",
],
},
linux_glibc: {
cflags: [
"-mssse3",
],
srcs: [
$linux_srcs
],
local_include_dirs: [
"linux",
],
export_include_dirs: [
"linux",
],
},
darwin: {
cflags: [
"-mssse3",
],
srcs: [
$mac_srcs
],
local_include_dirs: [
"mac",
],
export_include_dirs: [
"mac",
],
},
windows: {
enabled: true,
cflags: [
"-mssse3",
"-Wno-unknown-pragmas",
],
srcs: [
$win_srcs
],
local_include_dirs: [
"win",
],
export_include_dirs: [
"win",
],
},
},
defaults: ["skia_deps",
"skia_pgo",
"skia_defaults",
],
}
// Build libskia with PGO by default.
// Location of PGO profile data is defined in build/soong/cc/pgo.go
// and is separate from skia.
// To turn it off, set ANDROID_PGO_NO_PROFILE_USE environment variable
// or set enable_profile_use property to false.
cc_defaults {
name: "skia_pgo",
pgo: {
instrumentation: true,
profile_file: "hwui/hwui.profdata",
benchmarks: ["hwui", "skia"],
enable_profile_use: true,
},
}
// "defaults" property to disable profile use for Skia tools and benchmarks.
cc_defaults {
name: "skia_pgo_no_profile_use",
defaults: [
"skia_pgo",
],
pgo: {
enable_profile_use: false,
},
}
cc_defaults {
// Subset of the larger "skia_deps", which includes only the dependencies
// needed for libskia_renderengine. Note that it includes libpng and libz
// for the purposes of MSKP captures, but we could instead leave it up to
// RenderEngine to provide its own SkSerializerProcs if another client
// wants an even smaller version of libskia.
name: "skia_renderengine_deps",
shared_libs: [
"libcutils",
"liblog",
"libpng",
"libz",
],
static_libs: [
"libarect",
],
group_static_libs: true,
target: {
android: {
shared_libs: [
"libEGL",
"libGLESv2",
"libvulkan",
"libnativewindow",
],
export_shared_lib_headers: [
"libvulkan",
],
},
},
}
cc_defaults {
name: "skia_deps",
defaults: ["skia_renderengine_deps"],
shared_libs: [
"libdng_sdk",
"libjpeg",
"libpiex",
"libexpat",
"libft2",
],
static_libs: [
"libwebp-decode",
"libwebp-encode",
"libsfntly",
],
target: {
android: {
shared_libs: [
"libheif",
],
},
darwin: {
host_ldlibs: [
"-framework AppKit",
],
},
windows: {
host_ldlibs: [
"-lgdi32",
"-loleaut32",
"-lole32",
"-lopengl32",
"-luuid",
"-lwindowscodecs",
],
},
},
}
cc_defaults {
name: "skia_tool_deps",
defaults: [
"skia_deps",
"skia_pgo_no_profile_use"
],
shared_libs: [
"libicu",
"libharfbuzz_ng",
],
static_libs: [
"libskia",
],
cflags: [
"-DSK_SHAPER_HARFBUZZ_AVAILABLE",
"-DSK_UNICODE_AVAILABLE",
"-Wno-implicit-fallthrough",
"-Wno-unused-parameter",
"-Wno-unused-variable",
],
target: {
windows: {
enabled: true,
},
},
}
cc_test {
name: "skia_dm",
defaults: [
"skia_tool_deps"
],
local_include_dirs: [
$dm_includes
],
srcs: [
$dm_srcs
],
shared_libs: [
"libbinder",
"libutils",
],
}
cc_test {
name: "skia_nanobench",
defaults: [
"skia_tool_deps"
],
local_include_dirs: [
$nanobench_includes
],
srcs: [
$nanobench_srcs
],
data: [
"resources/**/*",
],
}''')
# We'll run GN to get the main source lists and include directories for Skia.
def generate_args(target_os, enable_gpu, renderengine = False):
d = {
'is_official_build': 'true',
# gn_to_bp_utils' GetArchSources will take care of architecture-specific
# files.
'target_cpu': '"none"',
# Use the custom FontMgr, as the framework will handle fonts.
'skia_enable_fontmgr_custom_directory': 'false',
'skia_enable_fontmgr_custom_embedded': 'false',
'skia_enable_fontmgr_android': 'false',
'skia_enable_fontmgr_win': 'false',
'skia_enable_fontmgr_win_gdi': 'false',
'skia_use_fonthost_mac': 'false',
# enable features used in skia_nanobench
'skia_tools_require_resources': 'true',
'skia_use_fontconfig': 'false',
'skia_include_multiframe_procs': 'false',
'skia_libgifcodec_path': '"third_party/libgifcodec"',
}
d['target_os'] = target_os
if target_os == '"android"':
d['skia_enable_tools'] = 'true'
d['skia_include_multiframe_procs'] = 'true'
if enable_gpu:
d['skia_use_vulkan'] = 'true'
else:
d['skia_use_vulkan'] = 'false'
d['skia_enable_gpu'] = 'false'
if target_os == '"win"':
# The Android Windows build system does not provide FontSub.h
d['skia_use_xps'] = 'false'
# BUILDCONFIG.gn expects these to be set when building for Windows, but
# we're just creating Android.bp, so we don't need them. Populate with
# some placeholder values.
d['win_vc'] = '"placeholder_version"'
d['win_sdk_version'] = '"placeholder_version"'
d['win_toolchain_version'] = '"placeholder_version"'
if target_os == '"android"' and not renderengine:
d['skia_use_libheif'] = 'true'
else:
d['skia_use_libheif'] = 'false'
if renderengine:
d['skia_use_libpng_decode'] = 'false'
d['skia_use_libjpeg_turbo_decode'] = 'false'
d['skia_use_libjpeg_turbo_encode'] = 'false'
d['skia_use_libwebp_decode'] = 'false'
d['skia_use_libwebp_encode'] = 'false'
d['skia_use_libgifcodec'] = 'false'
d['skia_enable_pdf'] = 'false'
d['skia_use_freetype'] = 'false'
d['skia_use_fixed_gamma_text'] = 'false'
d['skia_use_expat'] = 'false'
d['skia_enable_fontmgr_custom_empty'] = 'false'
else:
d['skia_enable_android_utils'] = 'true'
d['skia_use_freetype'] = 'true'
d['skia_use_fixed_gamma_text'] = 'true'
d['skia_enable_fontmgr_custom_empty'] = 'true'
return d
gn_args = generate_args('"android"', True)
gn_args_linux = generate_args('"linux"', False)
gn_args_mac = generate_args('"mac"', False)
gn_args_win = generate_args('"win"', False)
gn_args_renderengine = generate_args('"android"', True, True)
js = gn_to_bp_utils.GenerateJSONFromGN(gn_args)
def strip_slashes(lst):
return {str(p.lstrip('/')) for p in lst}
android_srcs = strip_slashes(js['targets']['//:skia']['sources'])
cflags = strip_slashes(js['targets']['//:skia']['cflags'])
cflags_cc = strip_slashes(js['targets']['//:skia']['cflags_cc'])
local_includes = strip_slashes(js['targets']['//:skia']['include_dirs'])
export_includes = strip_slashes(js['targets']['//:public']['include_dirs'])
dm_srcs = strip_slashes(js['targets']['//:dm']['sources'])
dm_includes = strip_slashes(js['targets']['//:dm']['include_dirs'])
nanobench_target = js['targets']['//:nanobench']
nanobench_srcs = strip_slashes(nanobench_target['sources'])
nanobench_includes = strip_slashes(nanobench_target['include_dirs'])
gn_to_bp_utils.GrabDependentValues(js, '//:dm', 'sources', dm_srcs, 'skia')
gn_to_bp_utils.GrabDependentValues(js, '//:nanobench', 'sources',
nanobench_srcs, 'skia')
# skcms is a little special, kind of a second-party library.
local_includes.add("include/third_party/skcms")
dm_includes .add("include/third_party/skcms")
# Android's build will choke if we list headers.
def strip_headers(sources):
return {s for s in sources if not s.endswith('.h')}
gn_to_bp_utils.GrabDependentValues(js, '//:skia', 'sources', android_srcs, None)
android_srcs = strip_headers(android_srcs)
js_linux = gn_to_bp_utils.GenerateJSONFromGN(gn_args_linux)
linux_srcs = strip_slashes(js_linux['targets']['//:skia']['sources'])
gn_to_bp_utils.GrabDependentValues(js_linux, '//:skia', 'sources', linux_srcs,
None)
linux_srcs = strip_headers(linux_srcs)
js_mac = gn_to_bp_utils.GenerateJSONFromGN(gn_args_mac)
mac_srcs = strip_slashes(js_mac['targets']['//:skia']['sources'])
gn_to_bp_utils.GrabDependentValues(js_mac, '//:skia', 'sources', mac_srcs,
None)
mac_srcs = strip_headers(mac_srcs)
js_win = gn_to_bp_utils.GenerateJSONFromGN(gn_args_win)
win_srcs = strip_slashes(js_win['targets']['//:skia']['sources'])
gn_to_bp_utils.GrabDependentValues(js_win, '//:skia', 'sources', win_srcs,
None)
win_srcs = strip_headers(win_srcs)
srcs = android_srcs.intersection(linux_srcs).intersection(mac_srcs)
srcs = srcs.intersection(win_srcs)
android_srcs = android_srcs.difference(srcs)
linux_srcs = linux_srcs.difference(srcs)
mac_srcs = mac_srcs.difference(srcs)
win_srcs = win_srcs.difference(srcs)
js_renderengine = gn_to_bp_utils.GenerateJSONFromGN(gn_args_renderengine)
renderengine_srcs = strip_slashes(
js_renderengine['targets']['//:skia']['sources'])
gn_to_bp_utils.GrabDependentValues(js_renderengine, '//:skia', 'sources',
renderengine_srcs, None)
renderengine_srcs = strip_headers(renderengine_srcs)
dm_srcs = strip_headers(dm_srcs)
nanobench_srcs = strip_headers(nanobench_srcs)
cflags = gn_to_bp_utils.CleanupCFlags(cflags)
cflags_cc = gn_to_bp_utils.CleanupCCFlags(cflags_cc)
here = os.path.dirname(__file__)
defs = gn_to_bp_utils.GetArchSources(os.path.join(here, 'opts.gni'))
def get_defines(json):
return {str(d) for d in json['targets']['//:skia']['defines']}
android_defines = get_defines(js)
linux_defines = get_defines(js_linux)
mac_defines = get_defines(js_mac)
win_defines = get_defines(js_win)
renderengine_defines = get_defines(js_renderengine)
def mkdir_if_not_exists(path):
if not os.path.exists(path):
os.makedirs(path)
mkdir_if_not_exists('android/include/config/')
mkdir_if_not_exists('linux/include/config/')
mkdir_if_not_exists('mac/include/config/')
mkdir_if_not_exists('win/include/config/')
mkdir_if_not_exists('renderengine/include/config/')
platforms = { 'IOS', 'MAC', 'WIN', 'ANDROID', 'UNIX' }
def disallow_platforms(config, desired):
with open(config, 'a') as f:
p = sorted(platforms.difference({ desired }))
s = '#if '
for i in range(len(p)):
s = s + 'defined(SK_BUILD_FOR_%s)' % p[i]
if i < len(p) - 1:
s += ' || '
if i % 2 == 1:
s += '\\\n '
print(s, file=f)
print(' #error "Only SK_BUILD_FOR_%s should be defined!"' % desired, file=f)
print('#endif', file=f)
def append_to_file(config, s):
with open(config, 'a') as f:
print(s, file=f)
def write_android_config(config_path, defines):
gn_to_bp_utils.WriteUserConfig(config_path, defines)
append_to_file(config_path, '''
#ifndef SK_BUILD_FOR_ANDROID
#error "SK_BUILD_FOR_ANDROID must be defined!"
#endif''')
disallow_platforms(config_path, 'ANDROID')
write_android_config('android/include/config/SkUserConfig.h', android_defines)
write_android_config('renderengine/include/config/SkUserConfig.h', renderengine_defines)
def write_config(config_path, defines, platform):
gn_to_bp_utils.WriteUserConfig(config_path, defines)
append_to_file(config_path, '''
// Correct SK_BUILD_FOR flags that may have been set by
// SkTypes.h/Android.bp
#ifndef SK_BUILD_FOR_%s
#define SK_BUILD_FOR_%s
#endif
#ifdef SK_BUILD_FOR_ANDROID
#undef SK_BUILD_FOR_ANDROID
#endif''' % (platform, platform))
disallow_platforms(config_path, platform)
write_config('linux/include/config/SkUserConfig.h', linux_defines, 'UNIX')
write_config('mac/include/config/SkUserConfig.h', mac_defines, 'MAC')
write_config('win/include/config/SkUserConfig.h', win_defines, 'WIN')
# Turn a list of strings into the style bpfmt outputs.
def bpfmt(indent, lst, sort=True):
if sort:
lst = sorted(lst)
return ('\n' + ' '*indent).join('"%s",' % v for v in lst)
# OK! We have everything to fill in Android.bp...
with open('Android.bp', 'w') as Android_bp:
print(bp.substitute({
'export_includes': bpfmt(8, export_includes),
'local_includes': bpfmt(8, local_includes),
'srcs': bpfmt(8, srcs),
'cflags': bpfmt(8, cflags, False),
'cflags_cc': bpfmt(8, cflags_cc),
'arm_srcs': bpfmt(16, strip_headers(defs['armv7'])),
'arm_neon_srcs': bpfmt(20, strip_headers(defs['neon'])),
'arm64_srcs': bpfmt(16, strip_headers(defs['arm64'] +
defs['crc32'])),
'x86_srcs': bpfmt(16, strip_headers(defs['sse2'] +
defs['ssse3'] +
defs['sse41'] +
defs['sse42'] +
defs['avx' ] +
defs['hsw' ] +
defs['skx' ])),
'dm_includes' : bpfmt(8, dm_includes),
'dm_srcs' : bpfmt(8, dm_srcs),
'nanobench_includes' : bpfmt(8, nanobench_includes),
'nanobench_srcs' : bpfmt(8, nanobench_srcs),
'android_srcs': bpfmt(10, android_srcs),
'linux_srcs': bpfmt(10, linux_srcs),
'mac_srcs': bpfmt(10, mac_srcs),
'win_srcs': bpfmt(10, win_srcs),
'renderengine_srcs': bpfmt(8, renderengine_srcs),
}), file=Android_bp)