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srcs_opt = [
"adler32_simd.c",
// See https://chromium-review.googlesource.com/749732.
"contrib/optimizations/inffast_chunk.c",
"contrib/optimizations/inflate.c",
"crc32_simd.c",
]
cflags_arm = [
// 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",
// We no longer support non-Neon platform builds.
"-DADLER32_SIMD_NEON",
"-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",
// 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",
]
srcs_arm = [
"arm_features.c",
] + srcs_opt
cflags_x86 = []
srcs_x86 = ["inflate.c"]
/* TODO: this should work, but fails some tests on cuttlefish.
cflags_x86 = [
// Android's x86/x86-64 ABI includes SSE2 and SSSE3.
"-DADLER32_SIMD_SSSE3",
"-DINFLATE_CHUNK_SIMD_SSE2",
// TODO: ...but the host build system defaults don't match our official ABI.
"-mssse3",
// 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",
"x86.c",
] + srcs_opt
*/
// This optimization is applicable to arm64 and x86-64.
cflags_64 = ["-DINFLATE_CHUNK_READ_64LE"]
cc_defaults {
name: "libz_defaults",
cflags: [
// We do support hidden visibility, so turn that on.
"-DHAVE_HIDDEN",
// We do support const, so turn that on.
"-DZLIB_CONST",
"-Wall",
"-Werror",
"-Wno-unused",
"-Wno-unused-parameter",
],
stl: "none",
export_include_dirs: ["."],
srcs: [
"adler32.c",
"compress.c",
"crc32.c",
"deflate.c",
"gzclose.c",
"gzlib.c",
"gzread.c",
"gzwrite.c",
"infback.c",
"inftrees.c",
"inffast.c",
"simd_stub.c",
"trees.c",
"uncompr.c",
"zutil.c",
],
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,
srcs: srcs_arm,
},
arm64: {
cflags: cflags_arm + cflags_64,
srcs: srcs_arm,
},
x86: {
cflags: cflags_x86,
srcs: srcs_x86,
},
x86_64: {
cflags: cflags_x86 + cflags_64,
srcs: srcs_x86,
},
},
}
cc_library {
name: "libz",
defaults: ["libz_defaults"],
host_supported: true,
unique_host_soname: true,
static_ndk_lib: true,
vendor_available: true,
vndk: {
enabled: true,
support_system_process: true,
},
recovery_available: true,
native_bridge_supported: true,
target: {
linux_bionic: {
enabled: true,
},
windows: {
enabled: true,
},
},
}
// libz_current allows modules building against the NDK to have access to zlib
// API that's not available from the NDK libz.
cc_library_static {
name: "libz_current",
defaults: ["libz_defaults"],
sdk_version: "current",
}
cc_binary_host {
name: "minigzip",
srcs: ["contrib/minigzip/minigzip.c"],
cflags: ["-Wall", "-Werror", "-DUSE_MMAP"],
static_libs: ["libz"],
stl: "none",
}
cc_binary {
name: "zlib_bench",
srcs: ["contrib/bench/zlib_bench.cc"],
cflags: ["-Wall", "-Werror"],
host_supported: true,
shared_libs: ["libz"],
// We build zlib_bench32 and zlib_bench64 so it's easy to test LP32.
compile_multilib: "both",
multilib: {
lib32: { suffix: "32", },
lib64: { suffix: "64", },
},
}
// This module is defined in development/ndk/Android.bp. Updating these headers
// to be usable for any API level is going to be some work (at the very least,
// there's a ZLIB_VERNUM that will need to be handled since early versions of
// Android did not have all the APIs that calling code will use if this is set
// to the current value.
//
// The NDK never updated the zlib headers when the platform updated, so until we
// solve this the NDK will continue shipping the old headers.
//
// ndk_headers {
// name: "libz_headers",
// from: "src",
// to: "",
// srcs: [
// "src/zconf.h",
// "src/zlib.h",
// ],
// license: "NOTICE",
// }
ndk_library {
name: "libz",
symbol_file: "libz.map.txt",
first_version: "9",
unversioned_until: "current",
}
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