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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 json
import os
import pprint
import string
import subprocess
import tempfile
# 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 {
name: "libskia",
cflags: [
"-fexceptions",
"-Wno-unused-parameter",
"-U_FORTIFY_SOURCE",
"-D_FORTIFY_SOURCE=1",
"-DSKIA_IMPLEMENTATION=1",
],
export_include_dirs: [
$export_includes
],
local_include_dirs: [
$local_includes
],
srcs: [
$srcs
],
arch: {
arm: {
srcs: [
$arm_srcs
],
armv7_a_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
],
},
},
shared_libs: [
"libEGL",
"libGLESv2",
"libdng_sdk",
"libexpat",
"libft2",
"libicui18n",
"libicuuc",
"libjpeg",
"liblog",
"libpiex",
"libpng",
"libvulkan",
"libz",
],
static_libs: [
"libsfntly",
"libwebp-decode",
"libwebp-encode",
],
}''')
# We'll run GN to get the main source lists and include directories for Skia.
gn_args = {
'skia_enable_splicer': 'false',
'skia_enable_vulkan_debug_layers': 'false',
'skia_use_system_expat': 'true',
'skia_use_vulkan': 'true',
'target_cpu': '"none"',
'target_os': '"android"',
}
gn_args = ' '.join(sorted('%s=%s' % (k,v) for (k,v) in gn_args.iteritems()))
tmp = tempfile.mkdtemp()
subprocess.check_call(['gn', 'gen', tmp, '--args=%s' % gn_args, '--ide=json'])
js = json.load(open(os.path.join(tmp, 'project.json')))
def strip_slashes(lst):
return [str(p.lstrip('/')) for p in lst]
srcs = strip_slashes(js['targets']['//:skia']['sources'])
local_includes = strip_slashes(js['targets']['//:skia']['include_dirs'])
export_includes = strip_slashes(js['targets']['//:public']['include_dirs'])
# Grab the sources from targets :skia depends on (optional Skia components).
for dep in js['targets']['//:skia']['deps']:
if 'third_party' in dep:
continue # We've handled all third-party DEPS as static or shared_libs.
if 'none' in dep:
continue # We'll handle all cpu-specific sources manually later.
srcs.extend(strip_slashes(js['targets'][dep].get('sources', [])))
# No need to list headers.
srcs = [s for s in srcs if not s.endswith('.h')]
# Most defines go into SkUserConfig.h, where they're seen by Skia and its users.
# Start with the defines :skia uses, minus a couple. We'll add more in a bit.
defines = [str(d) for d in js['targets']['//:skia']['defines']]
defines.remove('SKIA_IMPLEMENTATION=1') # Only libskia should have this define.
# For architecture specific files, it's easier to just read the same source
# that GN does (opts.gni) rather than re-run GN once for each architecture.
# This .gni file we want to read is close enough to Python syntax
# that we can use execfile() if we supply definitions for GN builtins.
# While we're at it, grab defines specific to Android Framework the same way.
def get_path_info(path, kind):
assert kind == "abspath"
# While we want absolute paths in GN, relative paths work best here.
return path
builtins = { 'get_path_info': get_path_info }
defs = {}
here = os.path.dirname(__file__)
execfile(os.path.join(here, 'opts.gni'), builtins, defs)
execfile(os.path.join(here, 'android_framework_defines.gni'), builtins, defs)
# This should finish off the defines.
defines += defs['android_framework_defines']
defines.extend([
'GR_GL_CUSTOM_SETUP_HEADER "gl/GrGLConfig_chrome.h"',
'SKIA_DLL',
'SK_BUILD_FOR_ANDROID_FRAMEWORK',
'SK_DEFAULT_FONT_CACHE_LIMIT (768 * 1024)',
'SK_DEFAULT_GLOBAL_DISCARDABLE_MEMORY_POOL_SIZE (512 * 1024)',
'SK_IGNORE_ETC1_SUPPORT',
'SK_USE_FREETYPE_EMBOLDEN',
])
# TODO: move these all to android_framework_defines.gni?
# Turn paths from opts.gni into paths relative to external/skia.
def scrub(lst):
# Perform any string substitutions.
for var in defs:
if type(defs[var]) is str:
lst = [ p.replace('$'+var, defs[var]) for p in lst ]
# Relativize paths to top-level skia/ directory.
return [os.path.relpath(p, '..') for p in lst]
# Turn a list of strings into the style bpfmt outputs.
def bpfmt(indent, lst):
return ('\n' + ' '*indent).join('"%s",' % v for v in sorted(lst))
# OK! We have everything to fill in Android.bp...
with open('Android.bp', 'w') as f:
print >>f, bp.substitute({
'export_includes': bpfmt(8, export_includes),
'local_includes': bpfmt(8, local_includes),
'srcs': bpfmt(8, srcs),
'arm_srcs': bpfmt(16, scrub(defs['armv7'])),
'arm_neon_srcs': bpfmt(20, scrub(defs['neon'])),
'arm64_srcs': bpfmt(16, scrub(defs['arm64'] +
defs['crc32'])),
'none_srcs': bpfmt(16, scrub(defs['none'])),
'x86_srcs': bpfmt(16, scrub(defs['sse2'] +
defs['ssse3'] +
defs['sse41'] +
defs['sse42'] +
defs['avx' ] +
defs['hsw' ]))
})
#... and all the #defines we want to put in SkUserConfig.h.
with open('include/config/SkUserConfig.h', 'w') as f:
print >>f, '// This file is autogenerated by gn_to_bp.py.'
print >>f, '#ifndef SkUserConfig_DEFINED'
print >>f, '#define SkUserConfig_DEFINED'
for define in sorted(defines):
print >>f, ' #define', define.replace('=', ' ')
print >>f, '#endif//SkUserConfig_DEFINED'
|
