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// Fork of external/zlib to external/tflite-support/third_party/zlib.
// TODO(b/233151429): Clean up external/tflite-support/third_party/zlib so that it contains the
// minimum set of files needed to support `BertNLClassifier`.
package {
default_applicable_licenses: [
"external_tflite-support_third_party_zlib_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.
// See: http://go/android-license-faq
license {
name: "external_tflite-support_third_party_zlib_license",
visibility: [":__subpackages__"],
license_kinds: [
"SPDX-license-identifier-BSD",
"SPDX-license-identifier-Zlib",
],
license_text: [
"LICENSE",
],
}
srcs_opt = [
"adler32_simd.c",
// See https://chromium-review.googlesource.com/749732.
// TODO: causes `atest org.apache.harmony.tests.java.util.zip.DeflaterTest` failures.
// "contrib/optimizations/inffast_chunk.c",
// "contrib/optimizations/inflate.c",
// This file doesn't build for non-neon, so it can't be in the main srcs.
"crc32_simd.c",
]
cflags_arm = [
// Testing with zlib_bench shows -O3 is a win for ARM but a bit of a wash
// for x86, so match the BUILD file in only enabling this for ARM.
"-O3",
// We need a non-NEON libz.a for the NDK, and cpu_features.c won't build
// without this.
"-DCPU_NO_SIMD",
]
cflags_arm_neon = [
// Undo the -DCPU_NO_SIMD from the generic (non-NEON) ARM flags.
"-UCPU_NO_SIMD",
// We no longer support non-Neon platform builds, but the NDK just has one libz.
"-DADLER32_SIMD_NEON",
// TODO: causes `atest org.apache.harmony.tests.java.util.zip.DeflaterTest` failures.
// "-DINFLATE_CHUNK_SIMD_NEON",
// HWCAP_CRC32 is checked at runtime, so it's okay to turn crc32
// acceleration on for both 32- and 64-bit.
"-DCRC32_ARMV8_CRC32",
]
cflags_arm64 = cflags_arm + cflags_arm_neon
// The *host* x86 configuration (with *lower* CPU feature requirements).
cflags_x86 = [
// See ARMV8_OS_LINUX above.
"-DX86_NOT_WINDOWS",
// TODO: see arm above.
// "-DINFLATE_CHUNK_SIMD_SSE2",
// Android's host CPU feature requirements are *lower* than the
// corresponding device CPU feature requirements, so it's easier to just
// say "no SIMD for you" rather than specificially disable SSSE3.
// We should have a conversation about that, but not until we at least have
// data on how many Studio users have CPUs that don't make the grade...
// https://issuetracker.google.com/171235570
"-DCPU_NO_SIMD",
]
// The *device* x86 configuration (with *higher* CPU feature requirements).
cflags_android_x86 = [
// Android's x86/x86-64 ABI includes SSE2 and SSSE3.
"-UCPU_NO_SIMD",
"-DADLER32_SIMD_SSSE3",
// PCLMUL isn't in the ABI, but it won't actually be used unless CPUID
// reports that the processor really does have the instruction.
"-mpclmul",
"-DCRC32_SIMD_SSE42_PCLMUL",
]
srcs_x86 = [
"crc_folding.c",
"fill_window_sse.c",
] + srcs_opt
// This optimization is applicable to arm64 and x86-64.
cflags_64 = ["-DINFLATE_CHUNK_READ_64LE"]
tflite_support_libz_srcs = [
"adler32.c",
"compress.c",
"cpu_features.c",
"crc32.c",
"deflate.c",
"gzclose.c",
"gzlib.c",
"gzread.c",
"gzwrite.c",
"infback.c",
"inffast.c",
"inflate.c",
"inftrees.c",
"trees.c",
"uncompr.c",
"zutil.c",
"contrib/minizip/ioapi.c",
"contrib/minizip/unzip.c",
]
cc_defaults {
name: "tflite_support_libz_defaults",
cflags: [
// We do support hidden visibility, so turn that on.
"-DHAVE_HIDDEN",
// We do support const, so turn that on.
"-DZLIB_CONST",
// Enable -O3 as per chromium.
"-O3",
"-Wall",
"-Werror",
"-Wno-unused",
"-Wno-unused-parameter",
],
stl: "none",
export_include_dirs: ["."],
srcs: tflite_support_libz_srcs,
arch: {
arm: {
// TODO: This is to work around b/24465209. Remove after root cause
// is fixed.
pack_relocations: false,
ldflags: ["-Wl,--hash-style=both"],
cflags: cflags_arm,
neon: {
cflags: cflags_arm_neon,
srcs: srcs_opt,
},
},
arm64: {
cflags: cflags_arm64 + cflags_64,
srcs: srcs_opt,
},
x86: {
cflags: cflags_x86,
srcs: srcs_x86,
},
x86_64: {
cflags: cflags_x86 + cflags_64,
srcs: srcs_x86,
},
},
target: {
android_arm: {
cflags: [
// Since we're building for the platform, we claim to be Linux rather than
// Android so we use getauxval() directly instead of the NDK
// android_getCpuFeatures which isn't available to us anyway.
"-DARMV8_OS_LINUX",
],
},
android_x86: {
cflags: cflags_android_x86,
},
android_x86_64: {
cflags: cflags_android_x86,
},
darwin_arm64: {
cflags: [
"-DARMV8_OS_MACOS",
],
},
linux_arm64: {
cflags: [
// Since we're building for the platform, we claim to be Linux rather than
// Android so we use getauxval() directly instead of the NDK
// android_getCpuFeatures which isn't available to us anyway.
"-DARMV8_OS_LINUX",
],
},
},
}
cc_library_static {
name: "tflite_support_libz",
defaults: ["tflite_support_libz_defaults"],
host_supported: true,
unique_host_soname: true,
static_ndk_lib: true,
sdk_version: "current",
min_sdk_version: "30",
vendor_available: true,
product_available: true,
ramdisk_available: true,
vendor_ramdisk_available: true,
recovery_available: true,
native_bridge_supported: true,
target: {
linux_bionic: {
enabled: true,
},
windows: {
enabled: true,
},
},
apex_available: [
"//apex_available:platform",
"com.android.adservices",
],
}
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