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CMakeLists.txt
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CMakeLists.txt
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cmake_minimum_required(VERSION 3.5.1)
if(CMAKE_VERSION VERSION_LESS 3.12)
cmake_policy(VERSION ${CMAKE_VERSION})
else()
cmake_policy(VERSION 3.5.1...3.13.2)
endif()
message(STATUS "Using CMake version ${CMAKE_VERSION}")
set(CMAKE_MACOSX_RPATH 1)
# If not specified on the command line, enable C99 as the default
# Configuration items that affect the global compiler envirionment standards
# should be issued before the "project" command.
if(NOT CMAKE_C_STANDARD)
set(CMAKE_C_STANDARD 99) # The C standard whose features are requested to build this target
endif()
if(NOT CMAKE_C_STANDARD_REQUIRED)
set(CMAKE_C_STANDARD_REQUIRED ON) # Boolean describing whether the value of C_STANDARD is a requirement
endif()
if(NOT CMAKE_C_EXTENSIONS)
set(CMAKE_C_EXTENSIONS OFF) # Boolean specifying whether compiler specific extensions are requested
endif()
set(VALID_C_STANDARDS "99" "11")
if(NOT CMAKE_C_STANDARD IN_LIST VALID_C_STANDARDS)
MESSAGE(FATAL_ERROR "CMAKE_C_STANDARD:STRING=${CMAKE_C_STANDARD} not in know standards list\n ${VALID_C_STANDARDS}")
endif()
# Parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib${SUFFIX}.h _zlib_h_contents)
string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([0-9]+.[0-9]+.[0-9]+).*\".*"
"\\1" ZLIB_HEADER_VERSION ${_zlib_h_contents})
string(REGEX REPLACE ".*#define[ \t]+ZLIBNG_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
"\\1" ZLIBNG_HEADER_VERSION ${_zlib_h_contents})
message(STATUS "ZLIB_HEADER_VERSION: ${ZLIB_HEADER_VERSION}")
message(STATUS "ZLIBNG_HEADER_VERSION: ${ZLIBNG_HEADER_VERSION}")
project(zlib VERSION ${ZLIB_HEADER_VERSION} LANGUAGES C)
include(CheckTypeSize)
include(CheckSymbolExists)
include(CheckFunctionExists)
include(CheckIncludeFile)
include(CheckCSourceCompiles)
include(CheckCSourceRuns)
include(CheckCCompilerFlag)
include(CMakeDependentOption)
include(FeatureSummary)
include(cmake/detect-arch.cmake)
include(cmake/detect-install-dirs.cmake)
include(cmake/detect-coverage.cmake)
include(cmake/detect-sanitizer.cmake)
if(CMAKE_TOOLCHAIN_FILE)
message(STATUS "Using CMake toolchain: ${CMAKE_TOOLCHAIN_FILE}")
endif()
# Make sure we use an appropriate BUILD_TYPE by default, "Release" to be exact
# this should select the maximum generic optimisation on the current platform (i.e. -O3 for gcc/clang)
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "Release" CACHE STRING
"Choose the type of build, standard options are: Debug Release RelWithDebInfo MinSizeRel."
FORCE)
add_feature_info(CMAKE_BUILD_TYPE 1 "Build type: ${CMAKE_BUILD_TYPE} (default)")
else()
add_feature_info(CMAKE_BUILD_TYPE 1 "Build type: ${CMAKE_BUILD_TYPE} (selected)")
endif()
#
# Options parsing
#
macro(add_option name description value)
option(${name} ${description} ${value})
add_feature_info(${name} ${name} ${description})
endmacro()
add_option(WITH_GZFILEOP "Compile with support for gzFile related functions" ON)
add_option(ZLIB_COMPAT "Compile with zlib compatible API" OFF)
add_option(ZLIB_ENABLE_TESTS "Build test binaries" ON)
add_option(ZLIB_DUAL_LINK "Dual link tests against system zlib" OFF)
add_option(WITH_SANITIZER "Build with sanitizer (Memory, Address, Undefined)" OFF)
add_option(WITH_FUZZERS "Build test/fuzz" OFF)
add_option(WITH_OPTIM "Build with optimisation" ON)
add_option(WITH_NEW_STRATEGIES "Use new strategies" ON)
add_option(WITH_NATIVE_INSTRUCTIONS
"Instruct the compiler to use the full instruction set on this host (gcc/clang -march=native)" OFF)
add_option(WITH_MAINTAINER_WARNINGS "Build with project maintainer warnings" OFF)
add_option(WITH_CODE_COVERAGE "Enable code coverage reporting" OFF)
add_option(WITH_INFLATE_STRICT "Build with strict inflate distance checking" OFF)
add_option(WITH_INFLATE_ALLOW_INVALID_DIST "Build with zero fill for inflate invalid distances" OFF)
add_option(WITH_UNALIGNED "Support unaligned reads on platforms that support it" ON)
if(BASEARCH_ARM_FOUND)
add_option(WITH_ACLE "Build with ACLE" ON)
add_option(WITH_NEON "Build with NEON intrinsics" ON)
elseif(BASEARCH_PPC_FOUND)
add_option(WITH_POWER8 "Build with optimisations for POWER8" ON)
elseif(BASEARCH_S360_FOUND)
add_option(WITH_DFLTCC_DEFLATE "Build with DFLTCC intrinsics for compression on IBM Z" OFF)
add_option(WITH_DFLTCC_INFLATE "Build with DFLTCC intrinsics for decompression on IBM Z" OFF)
elseif(BASEARCH_X86_FOUND)
add_option(WITH_AVX2 "Build with AVX2" ON)
add_option(WITH_SSE2 "Build with SSE2" ON)
add_option(WITH_SSSE3 "Build with SSSE3" ON)
add_option(WITH_SSE4 "Build with SSE4" ON)
add_option(WITH_PCLMULQDQ "Build with PCLMULQDQ" ON)
endif()
add_option(INSTALL_UTILS "Copy minigzip and minideflate during install" OFF)
mark_as_advanced(FORCE
ZLIB_DUAL_LINK
WITH_ACLE WITH_NEON
WITH_DFLTCC_DEFLATE
WITH_DFLTCC_INFLATE
WITH_AVX2 WITH_SSE2
WITH_SSSE3 WITH_SSE4
WITH_PCLMULQDQ
WITH_POWER8
WITH_INFLATE_STRICT
WITH_INFLATE_ALLOW_INVALID_DIST
WITH_UNALIGNED
INSTALL_UTILS
)
if(ZLIB_COMPAT)
add_definitions(-DZLIB_COMPAT)
set(WITH_GZFILEOP ON)
set(SUFFIX "")
else()
set(SUFFIX "-ng")
endif()
if(WITH_GZFILEOP)
add_definitions(-DWITH_GZFILEOP)
endif()
if("${CMAKE_C_COMPILER}" MATCHES "icc" OR "${CMAKE_C_COMPILER}" MATCHES "icpc" OR "${CMAKE_C_COMPILER}" MATCHES "icl")
if(CMAKE_HOST_UNIX OR APPLE)
set(WARNFLAGS "-w3")
set(WARNFLAGS_MAINTAINER "-w3 -Wcheck -Wremarks")
set(WARNFLAGS_DISABLE "")
if(BASEARCH_X86_FOUND)
set(AVX2FLAG "-mavx2")
set(SSE2FLAG "-msse2")
set(SSSE3FLAG "-mssse3")
set(SSE4FLAG "-msse4.2")
endif()
else()
set(WARNFLAGS "/W3")
set(WARNFLAGS_MAINTAINER "/W5")
set(WARNFLAGS_DISABLE "")
if(BASEARCH_X86_FOUND)
set(AVX2FLAG "/arch:AVX2")
set(SSE2FLAG "/arch:SSE2")
set(SSSE3FLAG "/arch:SSSE3")
set(SSE4FLAG "/arch:SSE4.2")
endif()
endif()
if(WITH_NATIVE_INSTRUCTIONS)
message(STATUS "Ignoring WITH_NATIVE_INSTRUCTIONS; not supported on this configuration")
endif()
elseif(MSVC)
# Minimum supported MSVC version is 1800 = Visual Studio 12.0/2013
# See also https://cmake.org/cmake/help/latest/variable/MSVC_VERSION.html
if(MSVC_VERSION VERSION_LESS 1800)
message(SEND_ERROR "Unsupported Visual Studio compiler version (requires 2013 or later).")
endif()
# TODO. ICC can be used through MSVC. I'm not sure if we'd ever see that combination
# (who'd use cmake from an IDE...) but checking for ICC before checking for MSVC should
# avoid mistakes.
# /Oi ?
set(WARNFLAGS "/W3")
set(WARNFLAGS_MAINTAINER "/W4")
set(WARNFLAGS_DISABLE "")
if(BASEARCH_ARM_FOUND)
add_definitions(-D_ARM_WINAPI_PARTITION_DESKTOP_SDK_AVAILABLE)
if(NOT "${ARCH}" MATCHES "aarch64")
set(NEONFLAG "/arch:VFPv4")
endif()
elseif(BASEARCH_X86_FOUND)
if(NOT "${ARCH}" MATCHES "x86_64")
set(SSE2FLAG "/arch:SSE2")
endif()
endif()
if(WITH_NATIVE_INSTRUCTIONS)
message(STATUS "Ignoring WITH_NATIVE_INSTRUCTIONS; not supported on this configuration")
endif()
else()
# catch all GNU C compilers as well as Clang and AppleClang
if(CMAKE_C_COMPILER_ID MATCHES "GNU" OR CMAKE_C_COMPILER_ID MATCHES "Clang")
set(__GNUC__ ON)
endif()
# Enable warnings in GCC and Clang
if(__GNUC__)
set(WARNFLAGS "-Wall")
set(WARNFLAGS_MAINTAINER "-Wextra -Wpedantic")
set(WARNFLAGS_DISABLE "-Wno-implicit-fallthrough")
endif()
if(WITH_NATIVE_INSTRUCTIONS)
if(__GNUC__)
if(BASEARCH_PPC_FOUND)
set(NATIVEFLAG "-mcpu=native")
else()
set(NATIVEFLAG "-march=native")
endif()
else()
message(STATUS "Ignoring WITH_NATIVE_INSTRUCTIONS; not implemented yet on this configuration")
endif()
endif()
if(NOT NATIVEFLAG)
if(__GNUC__)
if(BASEARCH_ARM_FOUND)
if("${ARCH}" MATCHES "arm" AND NOT CMAKE_C_FLAGS MATCHES "-mfloat-abi")
# Auto-detect support for ARM floating point ABI
check_c_compiler_flag(-mfloat-abi=softfp HAVE_FLOATABI_SOFTFP)
if(HAVE_FLOATABI_SOFTFP)
set(FLOATABI "-mfloat-abi=softfp")
else()
check_c_compiler_flag(-mfloat-abi=hard HAVE_FLOATABI_HARD)
if(HAVE_FLOATABI_HARD)
set(FLOATABI "-mfloat-abi=hard")
endif()
endif()
if(FLOATABI)
message(STATUS "ARM floating point arch: ${FLOATABI}")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLOATABI}")
else()
message(STATUS "ARM floating point arch not auto-detected")
endif()
endif()
# NEON
if("${ARCH}" MATCHES "aarch64")
set(NEONFLAG "-march=armv8-a+simd")
else()
# Check whether -mfpu=neon is available
set(CMAKE_REQUIRED_FLAGS "-mfpu=neon")
check_c_source_compiles(
"int main() { return 0; }"
MFPU_NEON_AVAILABLE FAIL_REGEX "not supported")
set(CMAKE_REQUIRED_FLAGS)
if(MFPU_NEON_AVAILABLE)
set(NEONFLAG "-mfpu=neon")
endif()
endif()
# ACLE
set(ACLEFLAG "-march=armv8-a+crc")
elseif(BASEARCH_PPC_FOUND)
set(POWER8FLAG "-mcpu=power8")
elseif(BASEARCH_X86_FOUND)
set(AVX2FLAG "-mavx2")
set(SSE2FLAG "-msse2")
set(SSSE3FLAG "-mssse3")
set(SSE4FLAG "-msse4")
set(PCLMULFLAG "-mpclmul")
endif()
# Check whether -fno-lto is available
set(CMAKE_REQUIRED_FLAGS "-fno-lto")
check_c_source_compiles(
"int main() { return 0; }"
FNO_LTO_AVAILABLE FAIL_REGEX "not supported")
set(CMAKE_REQUIRED_FLAGS)
if(FNO_LTO_AVAILABLE)
set(NOLTOFLAG "-fno-lto")
endif()
endif()
endif()
endif()
# Replace optimization level 3 added by default with level 2
if(NOT MSVC AND NOT CMAKE_C_FLAGS MATCHES "([\\/\\-]O)3")
string(REGEX REPLACE "([\\/\\-]O)3" "\\12"
CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")
endif()
# Set architecture alignment requirements
if(WITH_UNALIGNED)
if(BASEARCH_ARM_FOUND OR (BASEARCH_PPC_FOUND AND "${ARCH}" MATCHES "powerpc64le") OR BASEARCH_X86_FOUND)
if(NOT DEFINED UNALIGNED_OK)
set(UNALIGNED_OK TRUE)
endif()
endif()
if(UNALIGNED_OK)
add_definitions(-DUNALIGNED_OK)
message(STATUS "Architecture supports unaligned reads")
endif()
if(BASEARCH_ARM_FOUND)
if(NOT DEFINED UNALIGNED64_OK)
if("${ARCH}" MATCHES "(arm(v[8-9])?|aarch64)")
set(UNALIGNED64_OK TRUE)
endif()
endif()
endif()
if(BASEARCH_PPC_FOUND)
if(NOT DEFINED UNALIGNED64_OK)
if("${ARCH}" MATCHES "powerpc64le")
set(UNALIGNED64_OK TRUE)
endif()
endif()
endif()
if(BASEARCH_X86_FOUND)
if(NOT DEFINED UNALIGNED64_OK)
set(UNALIGNED64_OK TRUE)
endif()
endif()
if(UNALIGNED64_OK)
add_definitions(-DUNALIGNED64_OK)
message(STATUS "Architecture supports unaligned reads of > 4 bytes")
endif()
else()
message(STATUS "Unaligned reads manually disabled")
endif()
# Apply warning compiler flags
if(WITH_MAINTAINER_WARNINGS)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNFLAGS} ${WARNFLAGS_MAINTAINER} ${WARNFLAGS_DISABLE}")
else()
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNFLAGS} ${WARNFLAGS_DISABLE}")
endif()
# Set code coverage compiler flags
if(WITH_CODE_COVERAGE)
add_code_coverage()
endif()
# Set native instruction set compiler flag
if(WITH_NATIVE_INSTRUCTIONS AND DEFINED NATIVEFLAG)
# Apply flag to all source files and compilation checks
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${NATIVEFLAG}")
endif()
#
# Check for standard/system includes
#
check_include_file(stdarg.h HAVE_STDARG_H)
check_include_file(sys/sdt.h HAVE_SYS_SDT_H)
if(HAVE_SYS_SDT_H)
add_definitions(-DHAVE_SYS_SDT_H)
endif()
check_include_file(unistd.h HAVE_UNISTD_H)
#
# Check to see if we have large file support
#
set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1 -D__USE_LARGEFILE64)
check_type_size(off64_t OFF64_T)
if(HAVE_OFF64_T)
add_definitions(-D_LARGEFILE64_SOURCE=1 -D__USE_LARGEFILE64)
else()
check_type_size(_off64_t _OFF64_T)
if(HAVE__OFF64_T)
add_definitions(-D_LARGEFILE64_SOURCE=1 -D__USE_LARGEFILE64)
else()
check_type_size(__off64_t __OFF64_T)
endif()
endif()
set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
#
# Check for fseeko and other optional functions
#
check_function_exists(fseeko HAVE_FSEEKO)
if(NOT HAVE_FSEEKO)
add_definitions(-DNO_FSEEKO)
endif()
check_function_exists(strerror HAVE_STRERROR)
if(NOT HAVE_STRERROR)
add_definitions(-DNO_STRERROR)
endif()
if(WITH_SANITIZER STREQUAL "Address")
add_address_sanitizer()
elseif(WITH_SANITIZER STREQUAL "Memory")
add_memory_sanitizer()
elseif(WITH_SANITIZER STREQUAL "Undefined")
add_undefined_sanitizer()
endif()
#
# Check whether compiler supports -fno-semantic-interposition parameter
#
check_c_compiler_flag(-fno-semantic-interposition HAVE_NO_INTERPOSITION)
#
# Check if we can hide zlib internal symbols that are linked between separate source files using hidden
#
check_c_source_compiles(
"#define Z_INTERNAL __attribute__((visibility (\"hidden\")))
int Z_INTERNAL foo;
int main() {
return 0;
}"
HAVE_ATTRIBUTE_VISIBILITY_HIDDEN FAIL_REGEX "not supported")
if(HAVE_ATTRIBUTE_VISIBILITY_HIDDEN)
add_definitions(-DHAVE_VISIBILITY_HIDDEN)
endif()
#
# Check if we can hide zlib internal symbols that are linked between separate source files using internal
#
check_c_source_compiles(
"#define Z_INTERNAL __attribute__((visibility (\"internal\")))
int Z_INTERNAL foo;
int main() {
return 0;
}"
HAVE_ATTRIBUTE_VISIBILITY_INTERNAL FAIL_REGEX "not supported")
if(HAVE_ATTRIBUTE_VISIBILITY_INTERNAL)
add_definitions(-DHAVE_VISIBILITY_INTERNAL)
endif()
#
# check for __builtin_ctz() support in the compiler
#
check_c_source_compiles(
"int main(void) {
unsigned int zero = 0;
long test = __builtin_ctz(zero);
(void)test;
return 0;
}"
HAVE_BUILTIN_CTZ
)
if(HAVE_BUILTIN_CTZ)
add_definitions(-DHAVE_BUILTIN_CTZ)
endif()
#
# check for __builtin_ctzll() support in the compiler
#
check_c_source_compiles(
"int main(void) {
unsigned int zero = 0;
long test = __builtin_ctzll(zero);
(void)test;
return 0;
}"
HAVE_BUILTIN_CTZLL
)
if(HAVE_BUILTIN_CTZLL)
add_definitions(-DHAVE_BUILTIN_CTZLL)
endif()
#
# check for ptrdiff_t support
#
check_c_source_compiles(
"#include <stddef.h>
int main() {
ptrdiff_t *a;
(void)a;
return 0;
}"
HAVE_PTRDIFF_T
)
if(NOT HAVE_PTRDIFF_T)
set(NEED_PTRDIFF_T 1)
check_type_size("void *" SIZEOF_DATA_PTR)
message(STATUS "sizeof(void *) is ${SIZEOF_DATA_PTR} bytes")
if(${SIZEOF_DATA_PTR} MATCHES "4")
set(PTRDIFF_TYPE "uint32_t")
elseif(${SIZEOF_DATA_PTR} MATCHES "8")
set(PTRDIFF_TYPE "uint64_t")
else()
message(FATAL_ERROR "sizeof(void *) is neither 32 nor 64 bit")
endif()
endif()
# Macro to check if source compiles
# (and, when compiling very natively, also runs).
macro(check_c_source_compile_or_run source flag)
if(CMAKE_CROSSCOMPILING OR NOT WITH_NATIVE_INSTRUCTIONS)
check_c_source_compiles("${source}" ${flag})
else()
check_c_source_runs("${source}" ${flag})
endif()
endmacro()
set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DZLIB_DEBUG")
if(MSVC)
set(CMAKE_DEBUG_POSTFIX "d")
add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
endif()
if(BASEARCH_PPC_FOUND)
# Check if we have what we need for POWER8 optimizations
set(CMAKE_REQUIRED_FLAGS "${POWER8FLAG}")
check_c_source_compiles(
"#include <sys/auxv.h>
int main() {
return (getauxval(AT_HWCAP2) & PPC_FEATURE2_ARCH_2_07);
}"
HAVE_POWER8
)
set(CMAKE_REQUIRED_FLAGS)
elseif(BASEARCH_X86_FOUND)
# Check whether compiler supports SSE2 instrinics
set(CMAKE_REQUIRED_FLAGS "${SSE2FLAG}")
check_c_source_compile_or_run(
"#include <immintrin.h>
int main(void) {
__m128i zero = _mm_setzero_si128();
(void)zero;
return 0;
}"
HAVE_SSE2_INTRIN
)
# Check whether compiler supports SSSE3 intrinsics
set(CMAKE_REQUIRED_FLAGS "${SSSE3FLAG}")
check_c_source_compile_or_run(
"#include <immintrin.h>
int main(void) {
__m128i u, v, w;
u = _mm_set1_epi32(1);
v = _mm_set1_epi32(2);
w = _mm_hadd_epi32(u, v);
(void)w;
return 0;
}"
HAVE_SSSE3_INTRIN
)
# Check whether compiler supports SSE4 CRC inline asm
set(CMAKE_REQUIRED_FLAGS "${SSE4FLAG}")
check_c_source_compile_or_run(
"int main(void) {
unsigned val = 0, h = 0;
#if defined(_MSC_VER)
{ __asm mov edx, h __asm mov eax, val __asm crc32 eax, edx __asm mov val, eax }
#else
__asm__ __volatile__ ( \"crc32 %1,%0\" : \"+r\" (h) : \"r\" (val) );
#endif
return (int)h;
}"
HAVE_SSE42CRC_INLINE_ASM
)
# Check whether compiler supports SSE4 CRC intrinsics
check_c_source_compile_or_run(
"#include <immintrin.h>
int main(void) {
unsigned crc = 0;
char c = 'c';
#if defined(_MSC_VER)
crc = _mm_crc32_u32(crc, c);
#else
crc = __builtin_ia32_crc32qi(crc, c);
#endif
(void)crc;
return 0;
}"
HAVE_SSE42CRC_INTRIN
)
# Check whether compiler supports SSE4.2 compare string instrinics
check_c_source_compile_or_run(
"#include <immintrin.h>
int main(void) {
unsigned char a[64] = { 0 };
unsigned char b[64] = { 0 };
__m128i xmm_src0, xmm_src1;
xmm_src0 = _mm_loadu_si128((__m128i *)(char *)a);
xmm_src1 = _mm_loadu_si128((__m128i *)(char *)b);
return _mm_cmpestri(xmm_src0, 16, xmm_src1, 16, 0);
}"
HAVE_SSE42CMPSTR_INTRIN
)
# Check whether compiler supports PCLMULQDQ intrinsics
set(CMAKE_REQUIRED_FLAGS "${PCLMULFLAG}")
if(NOT (APPLE AND "${ARCH}" MATCHES "i386"))
# The pclmul code currently crashes on Mac in 32bit mode. Avoid for now.
check_c_source_compile_or_run(
"#include <immintrin.h>
int main(void) {
__m128i a = _mm_setzero_si128();
__m128i b = _mm_setzero_si128();
__m128i c = _mm_clmulepi64_si128(a, b, 0x10);
(void)c;
return 0;
}"
HAVE_PCLMULQDQ_INTRIN
)
else()
set(HAVE_PCLMULQDQ_INTRIN NO)
endif()
# Check whether compiler supports AVX2 intrinics
set(CMAKE_REQUIRED_FLAGS "${AVX2FLAG}")
check_c_source_compile_or_run(
"#include <immintrin.h>
int main(void) {
__m256i x = _mm256_set1_epi16(2);
const __m256i y = _mm256_set1_epi16(1);
x = _mm256_subs_epu16(x, y);
(void)x;
return 0;
}"
HAVE_AVX2_INTRIN
)
set(CMAKE_REQUIRED_FLAGS)
# FORCE_SSE2 option will only be shown if HAVE_SSE2_INTRIN is true
if("${ARCH}" MATCHES "i[3-6]86")
cmake_dependent_option(FORCE_SSE2 "Always assume CPU is SSE2 capable" OFF "HAVE_SSE2_INTRIN" OFF)
endif()
endif()
#
# Enable deflate_quick at level 1
#
if(NOT WITH_NEW_STRATEGIES)
add_definitions(-DNO_QUICK_STRATEGY)
endif()
#
# Enable deflate_medium at level 4-6
#
if(NOT WITH_NEW_STRATEGIES)
add_definitions(-DNO_MEDIUM_STRATEGY)
endif()
#
# Enable inflate compilation options
#
if(WITH_INFLATE_STRICT)
add_definitions(-DINFLATE_STRICT)
message(STATUS "Inflate strict distance checking enabled")
endif()
if(WITH_INFLATE_ALLOW_INVALID_DIST)
add_definitions(-DINFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR)
message(STATUS "Inflate zero data for invalid distances enabled")
endif()
set(ZLIB_ARCH_SRCS)
set(ZLIB_ARCH_HDRS)
set(ARCHDIR "arch/generic")
if(BASEARCH_ARM_FOUND)
set(ARCHDIR "arch/arm")
elseif(BASEARCH_PPC_FOUND)
set(ARCHDIR "arch/power")
elseif(BASEARCH_S360_FOUND)
set(ARCHDIR "arch/s390")
elseif(BASEARCH_X86_FOUND)
set(ARCHDIR "arch/x86")
if(NOT ${ARCH} MATCHES "x86_64")
add_feature_info(SSE2 1 "Support the SSE2 instruction set, using \"${SSE2FLAG}\"")
endif()
else()
message(STATUS "No optimized architecture: using ${ARCHDIR}")
endif()
if(WITH_OPTIM)
if(BASEARCH_ARM_FOUND)
add_definitions(-DARM_FEATURES)
if(${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
check_c_source_compiles(
"#include <sys/auxv.h>
int main() {
return (getauxval(AT_HWCAP2) & HWCAP2_CRC32);
}"
ARM_AUXV_HAS_CRC32
)
if(ARM_AUXV_HAS_CRC32)
add_definitions(-DARM_AUXV_HAS_CRC32)
else()
message(STATUS "HWCAP2_CRC32 not present in sys/auxv.h; cannot detect support at runtime.")
endif()
if(NOT "${ARCH}" MATCHES "aarch64")
check_c_source_compiles(
"#include <sys/auxv.h>
int main() {
return (getauxval(AT_HWCAP) & HWCAP_NEON);
}"
ARM_AUXV_HAS_NEON
)
if(ARM_AUXV_HAS_NEON)
add_definitions(-DARM_AUXV_HAS_NEON)
else()
message(STATUS "HWCAP_NEON not present in sys/auxv.h; cannot detect support at runtime.")
endif()
endif()
endif()
list(APPEND ZLIB_ARCH_HDRS ${ARCHDIR}/arm.h)
list(APPEND ZLIB_ARCH_SRCS ${ARCHDIR}/armfeature.c)
if(WITH_ACLE AND NOT MSVC)
add_definitions(-DARM_ACLE_CRC_HASH)
set(ACLE_SRCS ${ARCHDIR}/crc32_acle.c ${ARCHDIR}/insert_string_acle.c)
set_property(SOURCE ${ACLE_SRCS} PROPERTY COMPILE_FLAGS "${ACLEFLAG} ${NOLTOFLAG}")
list(APPEND ZLIB_ARCH_SRCS ${ACLE_SRCS})
add_feature_info(ACLE_CRC 1 "Support ACLE optimized CRC hash generation, using \"${ACLEFLAG}\"")
endif()
if(WITH_NEON)
add_definitions(-DARM_NEON_ADLER32 -DARM_NEON_CHUNKSET -DARM_NEON_SLIDEHASH)
set(NEON_SRCS ${ARCHDIR}/adler32_neon.c ${ARCHDIR}/chunkset_neon.c ${ARCHDIR}/slide_neon.c)
list(APPEND ZLIB_ARCH_SRCS ${NEON_SRCS})
set_property(SOURCE ${NEON_SRCS} PROPERTY COMPILE_FLAGS "${NEONFLAG} ${NOLTOFLAG}")
if(MSVC)
add_definitions(-D__ARM_NEON__)
endif()
add_feature_info(NEON_ADLER32 1 "Support NEON instructions in adler32, using \"${NEONFLAG}\"")
add_feature_info(NEON_SLIDEHASH 1 "Support NEON instructions in slide_hash, using \"${NEONFLAG}\"")
endif()
elseif(BASEARCH_PPC_FOUND)
if(WITH_POWER8 AND HAVE_POWER8)
add_definitions(-DPOWER8)
add_definitions(-DPOWER_FEATURES)
add_definitions(-DPOWER8_VSX_ADLER32)
add_definitions(-DPOWER8_VSX_SLIDEHASH)
list(APPEND ZLIB_ARCH_HDRS ${ARCHDIR}/power.h)
list(APPEND ZLIB_ARCH_SRCS ${ARCHDIR}/power.c)
set(POWER8_SRCS ${ARCHDIR}/adler32_power8.c ${ARCHDIR}/slide_hash_power8.c)
list(APPEND ZLIB_ARCH_SRCS ${POWER8_SRCS})
set_property(SOURCE ${POWER8_SRCS} PROPERTY COMPILE_FLAGS "${POWER8FLAG} ${NOLTOFLAG}")
endif()
elseif(BASEARCH_S360_FOUND)
if(WITH_DFLTCC_DEFLATE OR WITH_DFLTCC_INFLATE)
list(APPEND ZLIB_ARCH_SRCS ${ARCHDIR}/dfltcc_common.c)
add_definitions(-DGZBUFSIZE=262144)
endif()
if(WITH_DFLTCC_DEFLATE)
add_definitions(-DS390_DFLTCC_DEFLATE)
list(APPEND ZLIB_ARCH_SRCS ${ARCHDIR}/dfltcc_deflate.c)
endif()
if(WITH_DFLTCC_INFLATE)
add_definitions(-DS390_DFLTCC_INFLATE)
list(APPEND ZLIB_ARCH_SRCS ${ARCHDIR}/dfltcc_inflate.c)
endif()
elseif(BASEARCH_X86_FOUND)
add_definitions(-DX86_FEATURES)
list(APPEND ZLIB_ARCH_HDRS ${ARCHDIR}/x86.h)
list(APPEND ZLIB_ARCH_SRCS ${ARCHDIR}/x86.c)
if(MSVC)
list(APPEND ZLIB_ARCH_HDRS fallback_builtins.h)
endif()
if(WITH_AVX2 AND HAVE_AVX2_INTRIN)
add_definitions(-DX86_AVX2 -DX86_AVX2_ADLER32 -DX86_AVX_CHUNKSET)
set(AVX2_SRCS ${ARCHDIR}/slide_avx.c)
add_feature_info(AVX2_SLIDEHASH 1 "Support AVX2 optimized slide_hash, using \"${AVX2FLAG}\"")
list(APPEND AVX2_SRCS ${ARCHDIR}/chunkset_avx.c)
add_feature_info(AVX_CHUNKSET 1 "Support AVX optimized chunkset, using \"${AVX2FLAG}\"")
list(APPEND AVX2_SRCS ${ARCHDIR}/compare258_avx.c)
add_feature_info(AVX2_COMPARE258 1 "Support AVX2 optimized compare258, using \"${AVX2FLAG}\"")
list(APPEND AVX2_SRCS ${ARCHDIR}/adler32_avx.c)
add_feature_info(AVX2_ADLER32 1 "Support AVX2-accelerated adler32, using \"${AVX2FLAG}\"")
list(APPEND ZLIB_ARCH_SRCS ${AVX2_SRCS})
set_property(SOURCE ${AVX2_SRCS} PROPERTY COMPILE_FLAGS "${AVX2FLAG} ${NOLTOFLAG}")
endif()
if(WITH_SSE4 AND (HAVE_SSE42CRC_INLINE_ASM OR HAVE_SSE42CRC_INTRIN))
add_definitions(-DX86_SSE42_CRC_HASH)
set(SSE42_SRCS ${ARCHDIR}/insert_string_sse.c)
add_feature_info(SSE42_CRC 1 "Support SSE4.2 optimized CRC hash generation, using \"${SSE4FLAG}\"")
list(APPEND ZLIB_ARCH_SRCS ${SSE42_SRCS})
set_property(SOURCE ${SSE42_SRCS} PROPERTY COMPILE_FLAGS "${SSE4FLAG} ${NOLTOFLAG}")
if(HAVE_SSE42CRC_INTRIN)
add_definitions(-DX86_SSE42_CRC_INTRIN)
endif()
endif()
if(HAVE_SSE42CMPSTR_INTRIN)
add_definitions(-DX86_SSE42_CMP_STR)
set(SSE42_SRCS ${ARCHDIR}/compare258_sse.c)
add_feature_info(SSE42_COMPARE258 1 "Support SSE4.2 optimized compare258, using \"${SSE4FLAG}\"")
list(APPEND ZLIB_ARCH_SRCS ${SSE42_SRCS})
set_property(SOURCE ${SSE42_SRCS} PROPERTY COMPILE_FLAGS "${SSE4FLAG} ${NOLTOFLAG}")
endif()
if(WITH_SSE2 AND HAVE_SSE2_INTRIN)
add_definitions(-DX86_SSE2 -DX86_SSE2_CHUNKSET -DX86_SSE2_SLIDEHASH)
set(SSE2_SRCS ${ARCHDIR}/chunkset_sse.c ${ARCHDIR}/slide_sse.c)
list(APPEND ZLIB_ARCH_SRCS ${SSE2_SRCS})
if(NOT ${ARCH} MATCHES "x86_64")
set_property(SOURCE ${SSE2_SRCS} PROPERTY COMPILE_FLAGS "${SSE2FLAG} ${NOLTOFLAG}")
add_feature_info(FORCE_SSE2 FORCE_SSE2 "Assume CPU is SSE2 capable")
if(FORCE_SSE2)
add_definitions(-DX86_NOCHECK_SSE2)
endif()
endif()
endif()
if(WITH_SSSE3 AND HAVE_SSSE3_INTRIN)
add_definitions(-DX86_SSSE3 -DX86_SSSE3_ADLER32)
set(SSSE3_SRCS ${ARCHDIR}/adler32_ssse3.c)
add_feature_info(SSSE3_ADLER32 1 "Support SSSE3-accelerated adler32, using \"${SSSE3FLAG}\"")
list(APPEND ZLIB_ARCH_SRCS ${SSSE3_SRCS})
set_property(SOURCE ${SSSE3_SRCS} PROPERTY COMPILE_FLAGS "${SSSE3FLAG} ${NOLTOFLAG}")
endif()
if(WITH_PCLMULQDQ AND HAVE_PCLMULQDQ_INTRIN AND WITH_SSSE3 AND WITH_SSE4)
add_definitions(-DX86_PCLMULQDQ_CRC)
set(PCLMULQDQ_SRCS ${ARCHDIR}/crc_folding.c)
add_feature_info(PCLMUL_CRC 1 "Support CRC hash generation using PCLMULQDQ, using \"${SSSE3FLAG} ${SSE4FLAG} ${PCLMULFLAG}\"")
list(APPEND ZLIB_ARCH_SRCS ${PCLMULQDQ_SRCS})
set_property(SOURCE ${PCLMULQDQ_SRCS} PROPERTY COMPILE_FLAGS "${SSSE3FLAG} ${SSE4FLAG} ${PCLMULFLAG} ${NOLTOFLAG}")
endif()
endif()
endif()
message(STATUS "Architecture-specific source files: ${ZLIB_ARCH_SRCS}")
#============================================================================
# zconf.h
#============================================================================
macro(generate_cmakein input output)
file(REMOVE ${output})
file(STRINGS ${input} _lines)
foreach(_line IN LISTS _lines)
string(REGEX REPLACE "#ifdef HAVE_UNISTD_H.*" "@ZCONF_UNISTD_LINE@" _line "${_line}")
string(REGEX REPLACE "#ifdef HAVE_STDARG_H.*" "@ZCONF_STDARG_LINE@" _line "${_line}")
string(REGEX REPLACE "#ifdef NEED_PTRDIFF_T.*" "@ZCONF_PTRDIFF_LINE@" _line "${_line}")
if(NEED_PTRDIFF_T)
string(REGEX REPLACE "typedef PTRDIFF_TYPE" "typedef @PTRDIFF_TYPE@" _line "${_line}")
endif()
file(APPEND ${output} "${_line}\n")
endforeach()
endmacro(generate_cmakein)
generate_cmakein( ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.in ${CMAKE_CURRENT_BINARY_DIR}/zconf${SUFFIX}.h.cmakein )
if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
# If we're doing an out of source build and the user has a zconf.h
# in their source tree...
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h)
message(STATUS "Renaming")
message(STATUS " ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h")
message(STATUS "to 'zconf${SUFFIX}.h.included' because this file is included with zlib")
message(STATUS "but CMake generates it automatically in the build directory.")
file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.included)
endif()
# If we're doing an out of source build and the user has a zconf.h.cmakein
# in their source tree...
if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.cmakein)
message(STATUS "Renaming")
message(STATUS " ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.cmakein")
message(STATUS "to 'zconf${SUFFIX}.h.cmakeincluded' because this file is included with zlib")
message(STATUS "but CMake generates it automatically in the build directory.")
file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.cmakein ${CMAKE_CURRENT_SOURCE_DIR}/zconf${SUFFIX}.h.cmakeincluded)
endif()
endif()
# Refer to prefix symbolically to ease relocation by end user,
# as Makefile-generated .pc file does.
if(INC_INSTALL_DIR STREQUAL "${CMAKE_INSTALL_PREFIX}/include")
set(PC_INC_INSTALL_DIR "\${prefix}/include")
else()
set(PC_INC_INSTALL_DIR "${INC_INSTALL_DIR}")
endif()
if(LIB_INSTALL_DIR STREQUAL "${CMAKE_INSTALL_PREFIX}/lib")
set(PC_LIB_INSTALL_DIR "\${exec_prefix}/lib")
else()
set(PC_LIB_INSTALL_DIR "${LIB_INSTALL_DIR}")
endif()
#============================================================================
# zlib
#============================================================================
set(ZLIB_PUBLIC_HDRS
${CMAKE_CURRENT_BINARY_DIR}/zconf${SUFFIX}.h
zlib${SUFFIX}.h
)
set(ZLIB_PRIVATE_HDRS
adler32_p.h
chunkset_tpl.h
crc32_p.h
crc32_tbl.h
crc32_comb_tbl.h
deflate.h
deflate_p.h
functable.h
inffast.h
inffixed_tbl.h
inflate.h
inflate_p.h
inftrees.h
insert_string_tpl.h
match_tpl.h
trees.h
trees_emit.h
trees_tbl.h
zbuild.h
zendian.h
zutil.h
)
set(ZLIB_SRCS
adler32.c
chunkset.c
compare258.c
compress.c
crc32.c
crc32_comb.c
deflate.c
deflate_fast.c
deflate_medium.c
deflate_quick.c
deflate_slow.c
functable.c
infback.c
inffast.c
inflate.c
inftrees.c
insert_string.c
trees.c
uncompr.c
zutil.c
)
set(ZLIB_GZFILE_PRIVATE_HDRS
gzguts.h
)
set(ZLIB_GZFILE_SRCS
gzlib.c
gzread.c
gzwrite.c
)
if(NOT MINGW AND NOT MSYS)
set(ZLIB_DLL_SRCS
win32/zlib${SUFFIX}1.rc # If present will override custom build rule below.
)
endif()
if(MINGW OR MSYS)
# This gets us DLL resource information when compiling on MinGW.
if(NOT CMAKE_RC_COMPILER)
set(CMAKE_RC_COMPILER windres.exe)
endif()
add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
COMMAND ${CMAKE_RC_COMPILER}
-D GCC_WINDRES
-I ${CMAKE_CURRENT_SOURCE_DIR}
-I ${CMAKE_CURRENT_BINARY_DIR}
-o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
-i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib${SUFFIX}1.rc)
set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
endif()
set(ZLIB_ALL_SRCS ${ZLIB_SRCS} ${ZLIB_ARCH_HDRS} ${ZLIB_ARCH_SRCS} ${ZLIB_DLL_SRCS}
${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
if(WITH_GZFILEOP)
list(APPEND ZLIB_ALL_SRCS ${ZLIB_GZFILE_PRIVATE_HDRS} ${ZLIB_GZFILE_SRCS})
endif()
if(NOT DEFINED BUILD_SHARED_LIBS)
add_library(zlib SHARED ${ZLIB_ALL_SRCS})
add_library(zlibstatic STATIC ${ZLIB_ALL_SRCS})
set(ZLIB_INSTALL_LIBRARIES zlib zlibstatic)
else()
add_library(zlib ${ZLIB_ALL_SRCS})
if(NOT BUILD_SHARED_LIBS)
add_library(zlibstatic ALIAS zlib)
endif()
set(ZLIB_INSTALL_LIBRARIES zlib)
endif()
foreach(ZLIB_INSTALL_LIBRARY ${ZLIB_INSTALL_LIBRARIES})
target_include_directories(${ZLIB_INSTALL_LIBRARY} PUBLIC
${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_CURRENT_SOURCE_DIR})
endforeach()
if(WIN32)
set_target_properties(${ZLIB_INSTALL_LIBRARIES} PROPERTIES OUTPUT_NAME zlib${SUFFIX})
else()
# On unix-like platforms the library is almost always called libz
set_target_properties(${ZLIB_INSTALL_LIBRARIES} PROPERTIES OUTPUT_NAME z${SUFFIX})
endif()
if(NOT DEFINED BUILD_SHARED_LIBS OR BUILD_SHARED_LIBS)
set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
if(ZLIB_COMPAT)
set(ZLIB_FULL_VERSION ${ZLIB_HEADER_VERSION}.zlib-ng)
set_target_properties(zlib PROPERTIES SOVERSION 1)
else()
set(ZLIB_FULL_VERSION ${ZLIBNG_HEADER_VERSION})
set_target_properties(zlib PROPERTIES SOVERSION 2)
endif()
if(NOT CYGWIN)
# This property causes shared libraries on Linux to have the full version
# encoded into their final filename. We disable this on Cygwin because
# it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
# seems to be the default.
#
# This has no effect with MSVC, on that platform the version info for
# the DLL comes from the resource file win32/zlib1.rc
set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
endif()
if(UNIX)
if(HAVE_NO_INTERPOSITION)
set_target_properties(zlib PROPERTIES COMPILE_FLAGS "-fno-semantic-interposition")
endif()
if(NOT APPLE)
set_target_properties(zlib PROPERTIES LINK_FLAGS
"-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib${SUFFIX}.map\"")
else()
# Match configure/make's behavior (i.e. don't use @rpath on mac).
set_target_properties(zlib PROPERTIES INSTALL_NAME_DIR "${LIB_INSTALL_DIR}")
endif()
elseif(MSYS)
# Suppress version number from shared library name
set(CMAKE_SHARED_LIBRARY_NAME_WITH_VERSION 0)