# Copyright 2016 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Configuration. Ordinarily, all of these features are enabled, and
# "small" is disabled. For Chromium's purposes, enable "small" and disable
# nearly everything else to save about 36kB in the lzma_decompress
# library, which will be distributed with updates. This also translates to
# a 25kB savings in the compressed disk image that will contain the
# update.
_check_crc32 = true
_check_crc64 = false
_check_sha256 = false
_coder_lzma1 = false
_coder_lzma2 = true
_coder_delta = false
_coder_bcj_arm = false
_coder_bcj_armthumb = false
_coder_bcj_ia64 = false
_coder_bcj_powerpc = false
_coder_bcj_sparc = false
_coder_bcj_x86 = true
_coder_simple = _coder_bcj_arm || _coder_bcj_armthumb || _coder_bcj_ia64 ||
_coder_bcj_powerpc || _coder_bcj_sparc || _coder_bcj_x86
_small = true
config("common_config") {
cflags = [ "-Wno-implicit-fallthrough" ]
visibility = [ ":*" ]
defines = [ "HAVE_CONFIG_H" ]
include_dirs = [
"config/$current_os",
"xz/src/common",
"xz/src/liblzma/api",
"xz/src/liblzma/check",
"xz/src/liblzma/common",
"xz/src/liblzma/delta",
"xz/src/liblzma/lz",
"xz/src/liblzma/lzma",
"xz/src/liblzma/rangecoder",
"xz/src/liblzma/simple",
]
if (_small) {
defines += [ "HAVE_SMALL=1" ]
}
if (_check_crc32) {
defines += [ "HAVE_CHECK_CRC32=1" ]
}
if (_check_crc64) {
defines += [ "HAVE_CHECK_CRC64=1" ]
}
if (_check_sha256) {
defines += [ "HAVE_CHECK_SHA256=1" ]
}
}
config("decompress_config") {
visibility = [ ":*" ]
defines = []
if (_coder_lzma1) {
defines += [ "HAVE_DECODER_LZMA1=1" ]
}
if (_coder_lzma2) {
defines += [ "HAVE_DECODER_LZMA2=1" ]
}
if (_coder_delta) {
defines += [ "HAVE_DECODER_DELTA=1" ]
}
if (_coder_bcj_arm) {
defines += [ "HAVE_DECODER_ARM=1" ]
}
if (_coder_bcj_armthumb) {
defines += [ "HAVE_DECODER_ARMTHUMB=1" ]
}
if (_coder_bcj_ia64) {
defines += [ "HAVE_DECODER_IA64=1" ]
}
if (_coder_bcj_powerpc) {
defines += [ "HAVE_DECODER_POWERPC=1" ]
}
if (_coder_bcj_sparc) {
defines += [ "HAVE_DECODER_SPARC=1" ]
}
if (_coder_bcj_x86) {
defines += [ "HAVE_DECODER_X86=1" ]
}
}
config("compress_config") {
visibility = [ ":*" ]
defines = []
if (_coder_lzma1) {
defines += [ "HAVE_ENCODER_LZMA1=1" ]
}
if (_coder_lzma2) {
defines += [ "HAVE_ENCODER_LZMA2=1" ]
}
if (_coder_delta) {
defines += [ "HAVE_ENCODER_DELTA=1" ]
}
if (_coder_bcj_arm) {
defines += [ "HAVE_ENCODER_ARM=1" ]
}
if (_coder_bcj_armthumb) {
defines += [ "HAVE_ENCODER_ARMTHUMB=1" ]
}
if (_coder_bcj_ia64) {
defines += [ "HAVE_ENCODER_IA64=1" ]
}
if (_coder_bcj_powerpc) {
defines += [ "HAVE_ENCODER_POWERPC=1" ]
}
if (_coder_bcj_sparc) {
defines += [ "HAVE_ENCODER_SPARC=1" ]
}
if (_coder_bcj_x86) {
defines += [ "HAVE_ENCODER_X86=1" ]
}
}
source_set("common") {
visibility = [ ":*" ]
configs += [
":common_config",
":compress_config",
":decompress_config",
]
sources = [
"xz/src/common/tuklib_physmem.c",
"xz/src/liblzma/check/check.c",
"xz/src/liblzma/common/block_util.c",
"xz/src/liblzma/common/common.c",
"xz/src/liblzma/common/easy_preset.c",
"xz/src/liblzma/common/filter_common.c",
"xz/src/liblzma/common/hardware_physmem.c",
"xz/src/liblzma/common/index.c",
"xz/src/liblzma/common/stream_flags_common.c",
"xz/src/liblzma/common/vli_size.c",
"xz/src/liblzma/lzma/lzma_encoder_presets.c",
"xz/src/liblzma/rangecoder/price_table.c",
]
if (_small) {
sources += [
# CRC-32 must be compiled for header integrity checks, even if it is
# not enabled for payload integrity checks.
"xz/src/liblzma/check/crc32_small.c",
]
if (_check_crc64) {
sources += [ "xz/src/liblzma/check/crc64_small.c" ]
}
} else {
sources += [
# CRC-32 must be compiled for header integrity checks, even if it is
# not enabled for payload integrity checks.
#
# Use the "fast" implementation instead of the "x86" one for
# architecture independence. Both require the "table."
"xz/src/liblzma/check/crc32_fast.c",
"xz/src/liblzma/check/crc32_table.c",
# "xz/src/liblzma/check/crc32_x86.S",
]
if (_check_crc64) {
sources += [
# Use the "fast" implementation instead of the "x86" one for
# architecture independence. Both require the "table."
"xz/src/liblzma/check/crc64_fast.c",
"xz/src/liblzma/check/crc64_table.c",
# "xz/src/liblzma/check/crc64_x86.S",
]
}
}
if (_check_sha256) {
sources += [ "xz/src/liblzma/check/sha256.c" ]
}
if (_coder_delta) {
sources += [ "xz/src/liblzma/delta/delta_common.c" ]
}
if (_coder_bcj_arm) {
sources += [ "xz/src/liblzma/simple/arm.c" ]
}
if (_coder_bcj_armthumb) {
sources += [ "xz/src/liblzma/simple/armthumb.c" ]
}
if (_coder_bcj_ia64) {
sources += [ "xz/src/liblzma/simple/ia64.c" ]
}
if (_coder_bcj_powerpc) {
sources += [ "xz/src/liblzma/simple/powerpc.c" ]
}
if (_coder_bcj_sparc) {
sources += [ "xz/src/liblzma/simple/sparc.c" ]
}
if (_coder_bcj_x86) {
sources += [ "xz/src/liblzma/simple/x86.c" ]
}
if (_coder_simple) {
sources += [ "xz/src/liblzma/simple/simple_coder.c" ]
}
}
source_set("decompress") {
visibility = [ ":*" ]
configs += [
":common_config",
":decompress_config",
]
sources = [
"xz/src/liblzma/common/alone_decoder.c",
"xz/src/liblzma/common/auto_decoder.c",
"xz/src/liblzma/common/block_buffer_decoder.c",
"xz/src/liblzma/common/block_decoder.c",
"xz/src/liblzma/common/block_header_decoder.c",
"xz/src/liblzma/common/easy_decoder_memusage.c",
"xz/src/liblzma/common/filter_buffer_decoder.c",
"xz/src/liblzma/common/filter_decoder.c",
"xz/src/liblzma/common/filter_flags_decoder.c",
"xz/src/liblzma/common/index_decoder.c",
"xz/src/liblzma/common/index_hash.c",
"xz/src/liblzma/common/stream_buffer_decoder.c",
"xz/src/liblzma/common/stream_decoder.c",
"xz/src/liblzma/common/stream_flags_decoder.c",
"xz/src/liblzma/common/vli_decoder.c",
"xz/src/liblzma/lz/lz_decoder.c",
"xz/src/liblzma/lzma/lzma_decoder.c",
]
if (_coder_lzma2) {
sources += [ "xz/src/liblzma/lzma/lzma2_decoder.c" ]
}
if (_coder_delta) {
sources += [ "xz/src/liblzma/delta/delta_decoder.c" ]
}
if (_coder_simple) {
sources += [ "xz/src/liblzma/simple/simple_decoder.c" ]
}
cflags = [
# Use -Os to minimize the size of the installer tools.
"-Os",
]
}
source_set("compress") {
visibility = [ ":*" ]
configs += [
":common_config",
":compress_config",
]
sources = [
"xz/src/liblzma/common/alone_encoder.c",
"xz/src/liblzma/common/block_buffer_encoder.c",
"xz/src/liblzma/common/block_encoder.c",
"xz/src/liblzma/common/block_header_encoder.c",
"xz/src/liblzma/common/easy_buffer_encoder.c",
"xz/src/liblzma/common/easy_encoder.c",
"xz/src/liblzma/common/easy_encoder_memusage.c",
"xz/src/liblzma/common/filter_buffer_encoder.c",
"xz/src/liblzma/common/filter_encoder.c",
"xz/src/liblzma/common/filter_flags_encoder.c",
"xz/src/liblzma/common/index_encoder.c",
"xz/src/liblzma/common/stream_buffer_encoder.c",
"xz/src/liblzma/common/stream_encoder.c",
"xz/src/liblzma/common/stream_flags_encoder.c",
"xz/src/liblzma/common/vli_encoder.c",
"xz/src/liblzma/lz/lz_encoder.c",
"xz/src/liblzma/lz/lz_encoder_mf.c",
"xz/src/liblzma/lzma/lzma_encoder.c",
"xz/src/liblzma/lzma/lzma_encoder_optimum_fast.c",
"xz/src/liblzma/lzma/lzma_encoder_optimum_normal.c",
]
if (!_small) {
sources += [ "xz/src/liblzma/lzma/fastpos_table.c" ]
}
if (_coder_lzma2) {
sources += [ "xz/src/liblzma/lzma/lzma2_encoder.c" ]
}
if (_coder_delta) {
sources += [ "xz/src/liblzma/delta/delta_encoder.c" ]
}
if (_coder_simple) {
sources += [ "xz/src/liblzma/simple/simple_encoder.c" ]
}
}
config("lzma_decompress_config") {
include_dirs = [ "xz/src/liblzma/api" ]
}
source_set("lzma") {
deps = [
":common",
":compress",
":decompress",
]
configs += [
":common_config",
":decompress_config",
":compress_config",
]
public_configs = [ ":lzma_decompress_config" ]
}
# Always build as a shared library to promote code sharing. This library
# is distributed in Google Chrome update disk images and is used by more
# than one tool.
shared_library("lzma_decompress") {
# Avoid default deps, which pull in the hermetic libc++, which is not needed
# for this pure C executable, and which doesn't play well with creating
# one-off universal binaries, since libc++ is not built as universal.
no_default_deps = true
configs += [
":common_config",
":decompress_config",
]
public_configs = [ ":lzma_decompress_config" ]
deps = [
":common",
":decompress",
]
ldflags = [
# The library will reside in the same directory as executables linked
# against it.
"-Wl,-install_name,@loader_path/lib$target_name.dylib",
# Trim the list of exported symbols to just those needed by
# dependents. This limits the set of "roots" seen during dead-code
# stripping and reduces the size of the library.
"-Wl,-exported_symbols_list," +
rebase_path("lzma_decompress.export", root_build_dir),
]
}
executable("xz") {
# Avoid default deps, which pull in the hermetic libc++, which is not needed
# for this pure C executable, and which doesn't play well with creating
# one-off universal binaries, since libc++ is not built as universal.
no_default_deps = true
configs += [
":common_config",
":decompress_config",
":compress_config",
]
sources = [
"xz/src/common/tuklib_cpucores.c",
"xz/src/common/tuklib_exit.c",
"xz/src/common/tuklib_mbstr_fw.c",
"xz/src/common/tuklib_mbstr_width.c",
"xz/src/common/tuklib_open_stdxxx.c",
"xz/src/common/tuklib_progname.c",
"xz/src/xz/args.c",
"xz/src/xz/coder.c",
"xz/src/xz/file_io.c",
"xz/src/xz/hardware.c",
"xz/src/xz/list.c",
"xz/src/xz/main.c",
"xz/src/xz/message.c",
"xz/src/xz/options.c",
"xz/src/xz/signals.c",
"xz/src/xz/suffix.c",
"xz/src/xz/util.c",
]
deps = [ ":lzma" ]
include_dirs = [
"config/$current_os",
"xz/src/common",
]
}
executable("xzdec") {
# Avoid default deps, which pull in the hermetic libc++, which is not needed
# for this pure C executable, and which doesn't play well with creating
# one-off universal binaries, since libc++ is not built as universal.
no_default_deps = true
configs += [
":common_config",
":decompress_config",
]
sources = [
"xz/src/common/tuklib_exit.c",
"xz/src/common/tuklib_progname.c",
"xz/src/xzdec/xzdec.c",
]
deps = [ ":lzma_decompress" ]
include_dirs = [
"config/$current_os",
"xz/src/common",
]
cflags = [
# Use -Os to minimize the size of the installer tools.
"-Os",
]
}
Codebase Browser
chromium