# Copyright 2017 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import("//chromium/build/config/features.gni")
import("//libwebrtc/webrtc.gni")
import("//testing/test.gni")
# Only applied to CRC32C source and tests. (not exported)
config("crc32c_config") {
visibility = [ ":*" ]
include_dirs = [
"config",
"src/include",
]
defines = [
"BYTE_ORDER_BIG_ENDIAN=0",
"CRC32C_TESTS_BUILT_WITH_GLOG=0",
]
# If we ever support big-endian builds, add logic to conditionally enable
# BYTE_ORDER_BIG_ENDIAN.
if (current_cpu == "x86" || current_cpu == "x64") {
defines += [
"HAVE_MM_PREFETCH=1",
"HAVE_SSE42=1",
]
# To enable HAVE_SSE42 we need to build libwebrtc with -msse4.2
# rather than -msse2. See Bug 1927652 for making the sse4.2 build
# change. See Bug 1927655 for removing this build modification.
if (build_with_mozilla) {
defines += [ "HAVE_SSE42=0" ]
}
} else {
defines += [
"HAVE_MM_PREFETCH=0",
"HAVE_SSE42=0",
]
}
if (is_clang || !is_win) {
defines += [ "HAVE_BUILTIN_PREFETCH=1" ]
} else {
defines += [ "HAVE_BUILTIN_PREFETCH=0" ]
}
# See Bug 1927660 for re-enabling the ARM64 specific code that uses
# ExtendArm64 rather than ExtendPortable.
if (!build_with_mozilla && current_cpu == "arm64") {
defines += [ "HAVE_ARM64_CRC32C=1" ]
} else {
defines += [ "HAVE_ARM64_CRC32C=0" ]
}
# Android added <sys/auxv.h> in API level 18.
if (is_linux || is_chromeos || is_android) {
defines += [
"HAVE_STRONG_GETAUXVAL=1",
"HAVE_WEAK_GETAUXVAL=1",
]
} else {
defines += [
"HAVE_STRONG_GETAUXVAL=0",
"HAVE_WEAK_GETAUXVAL=0",
]
}
}
source_set("crc32c") {
sources = [
"src/include/crc32c/crc32c.h",
"src/src/crc32c.cc",
"src/src/crc32c_portable.cc",
]
configs += [ ":crc32c_config" ]
deps = [
":crc32c_arm64",
":crc32c_internal_headers",
":crc32c_sse42",
]
}
source_set("crc32c_sse42") {
visibility = [ ":*" ]
sources = [
"src/src/crc32c_sse42.cc",
"src/src/crc32c_sse42.h",
"src/src/crc32c_sse42_check.h",
]
configs += [ ":crc32c_config" ]
if (current_cpu == "x86" || current_cpu == "x64") {
if (is_win && !is_clang) {
cflags = [ "/arch:AVX" ]
} else {
cflags = [ "-msse4.2" ]
}
}
deps = [ ":crc32c_internal_headers" ]
}
source_set("crc32c_arm64") {
visibility = [ ":*" ]
sources = [
"src/src/crc32c_arm64.cc",
"src/src/crc32c_arm64.h",
"src/src/crc32c_arm64_check.h",
]
configs += [ ":crc32c_config" ]
if (current_cpu == "arm64") {
if (is_clang) {
cflags = [
"-march=armv8-a",
# Some builds set -march to a different value from the above.
# The specific feature flags below enable the instructions we need
# in these cases. See
https://crbug.com/934016 for example.
"-Xclang",
"-target-feature",
"-Xclang",
"+crc",
"-Xclang",
"-target-feature",
"-Xclang",
"+crypto",
"-Xclang",
"-target-feature",
"-Xclang",
"+aes",
]
} else {
cflags = [ "-march=armv8-a+crc+crypto" ]
}
}
deps = [ ":crc32c_internal_headers" ]
}
source_set("crc32c_internal_headers") {
sources = [
"config/crc32c/crc32c_config.h",
"src/src/crc32c_internal.h",
"src/src/crc32c_prefetch.h",
"src/src/crc32c_read_le.h",
"src/src/crc32c_round_up.h",
]
}
if (!build_with_mozilla) {
test("crc32c_tests") {
sources = [
"src/src/crc32c_arm64_unittest.cc",
"src/src/crc32c_extend_unittests.h",
"src/src/crc32c_portable_unittest.cc",
"src/src/crc32c_prefetch_unittest.cc",
"src/src/crc32c_read_le_unittest.cc",
"src/src/crc32c_round_up_unittest.cc",
"src/src/crc32c_sse42_unittest.cc",
"src/src/crc32c_unittest.cc",
]
configs += [ ":crc32c_config" ]
deps = [
":crc32c",
":crc32c_arm64",
":crc32c_internal_headers",
":crc32c_sse42",
"//testing/gtest:gtest_main",
"//third_party/googletest:gtest",
]
}
test("crc32c_benchmark") {
sources = [ "src/src/crc32c_benchmark.cc" ]
configs += [ ":crc32c_config" ]
deps = [
":crc32c",
":crc32c_arm64",
":crc32c_internal_headers",
":crc32c_sse42",
"//third_party/google_benchmark",
]
}
}
