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skia2/gn/gn_to_bp.py
Leon Scroggins III a55445eab6 Simplify gn_args in gn_to_bp.py 
Bug: b/118742766

This does not change Android.bp or (any) SkUserConfig.h. But it
consolidates the arguments for the different platforms into one method,
which makes it clear what they share and where they differ. It also no
longer sets skia_enable_tools for the non-Android build, where it
doesn't need to be set to true (this makes no difference in the final
output nor the time GN takes to generate JSON).

Change-Id: I22af345aaf3878227d4f42afc2861e49ec2691ec
Reviewed-on: https://skia-review.googlesource.com/c/173238
Reviewed-by: Ben Wagner <bungeman@google.com>
Commit-Queue: Leon Scroggins <scroggo@google.com>
2018-12-04 16:04:02 +00:00

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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.
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.
cc_library_static {
name: "libskia",
host_supported: true,
cflags: [
$cflags
],
cppflags:[
$cflags_cc
],
export_include_dirs: [
$export_includes
],
local_include_dirs: [
$local_includes
],
srcs: [
$srcs
],
arch: {
arm: {
srcs: [
$arm_srcs
],
neon: {
srcs: [
$arm_neon_srcs
],
},
},
arm64: {
srcs: [
$arm64_srcs
],
},
mips: {
srcs: [
$none_srcs
],
},
mips64: {
srcs: [
$none_srcs
],
},
x86: {
srcs: [
$x86_srcs
],
},
x86_64: {
srcs: [
$x86_srcs
],
},
},
target: {
android: {
srcs: [
$android_srcs
"third_party/vulkanmemoryallocator/GrVulkanMemoryAllocator.cpp",
],
local_include_dirs: [
"include/config/android",
"third_party/vulkanmemoryallocator/",
],
export_include_dirs: [
"include/config/android",
],
},
linux_glibc: {
cflags: [
"-mssse3",
],
srcs: [
$linux_srcs
],
local_include_dirs: [
"include/config/linux",
],
export_include_dirs: [
"include/config/linux",
],
},
darwin: {
cflags: [
"-mssse3",
],
srcs: [
$mac_srcs
],
local_include_dirs: [
"include/config/mac",
],
export_include_dirs: [
"include/config/mac",
],
},
},
defaults: ["skia_deps",
"skia_pgo",
],
}
// 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 {
name: "skia_deps",
shared_libs: [
"libdng_sdk",
"libexpat",
"libft2",
"libicui18n",
"libicuuc",
"libjpeg",
"liblog",
"libpiex",
"libpng",
"libz",
"libcutils",
],
static_libs: [
"libarect",
"libsfntly",
"libwebp-decode",
"libwebp-encode",
],
group_static_libs: true,
target: {
android: {
shared_libs: [
"libEGL",
"libGLESv2",
"libheif",
"libvulkan",
"libnativewindow",
],
},
darwin: {
host_ldlibs: [
"-framework AppKit",
],
},
},
}
cc_defaults {
name: "skia_tool_deps",
defaults: [
"skia_deps",
"skia_pgo_no_profile_use"
],
static_libs: [
"libjsoncpp",
"libskia",
],
cflags: [
"-Wno-implicit-fallthrough",
"-Wno-unused-parameter",
"-Wno-unused-variable",
],
}
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):
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': 'false',
'skia_enable_fontmgr_custom_empty': 'true',
'skia_enable_fontmgr_android': 'false',
'skia_use_fonthost_mac': 'false',
'skia_use_freetype': 'true',
'skia_use_fontconfig': 'false',
'skia_use_fixed_gamma_text': 'true',
}
d['target_os'] = target_os
if target_os == '"android"':
d['skia_enable_tools'] = 'true'
d['skia_use_libheif'] = 'true'
else:
d['skia_use_libheif'] = 'false'
if enable_gpu:
d['skia_use_vulkan'] = 'true'
else:
d['skia_use_vulkan'] = 'false'
d['skia_enable_gpu'] = 'false'
return d
gn_args = generate_args('"android"', True)
gn_args_linux = generate_args('"linux"', False)
gn_args_mac = generate_args('"mac"', False)
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("third_party/skcms")
dm_includes .add("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)
srcs = android_srcs.intersection(linux_srcs).intersection(mac_srcs)
android_srcs = android_srcs.difference(srcs)
linux_srcs = linux_srcs.difference(srcs)
mac_srcs = mac_srcs.difference(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)
def mkdir_if_not_exists(path):
if not os.path.exists(path):
os.mkdir(path)
mkdir_if_not_exists('include/config/android/')
mkdir_if_not_exists('include/config/linux/')
mkdir_if_not_exists('include/config/mac/')
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 >>f, s
print >>f, ' #error "Only SK_BUILD_FOR_%s should be defined!"' % desired
print >>f, '#endif'
def append_to_file(config, s):
with open(config, 'a') as f:
print >>f, s
android_config = 'include/config/android/SkUserConfig.h'
gn_to_bp_utils.WriteUserConfig(android_config, android_defines)
append_to_file(android_config, '''
#ifndef SK_BUILD_FOR_ANDROID
#error "SK_BUILD_FOR_ANDROID must be defined!"
#endif''')
disallow_platforms(android_config, 'ANDROID')
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
// SkPreConfig.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('include/config/linux/SkUserConfig.h', linux_defines, 'UNIX')
write_config('include/config/mac/SkUserConfig.h', mac_defines, 'MAC')
# 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 >>Android_bp, 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'])),
'none_srcs': bpfmt(16, strip_headers(defs['none'])),
'x86_srcs': bpfmt(16, strip_headers(defs['sse2'] +
defs['ssse3'] +
defs['sse41'] +
defs['sse42'] +
defs['avx' ] +
defs['hsw' ])),
'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),
})
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