blob: c3062e2e58fba336fd195798d1c5149502857027 [file] [log] [blame]
# Copyright 2019 Google Inc. All Rights Reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following disclaimer
# in the documentation and/or other materials provided with the
# distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
cmake_minimum_required(VERSION 3.1)
project(Snappy VERSION 1.1.10 LANGUAGES C CXX)
# C++ standard can be overridden when this is used as a sub-project.
if(NOT CMAKE_CXX_STANDARD)
# This project requires C++11.
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
endif(NOT CMAKE_CXX_STANDARD)
# https://github.com/izenecloud/cmake/blob/master/SetCompilerWarningAll.cmake
if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
# Use the highest warning level for Visual Studio.
set(CMAKE_CXX_WARNING_LEVEL 4)
if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
else(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4")
endif(CMAKE_CXX_FLAGS MATCHES "/W[0-4]")
# Disable C++ exceptions.
string(REGEX REPLACE "/EH[a-z]+" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /EHs-c-")
add_definitions(-D_HAS_EXCEPTIONS=0)
# Disable RTTI.
string(REGEX REPLACE "/GR" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /GR-")
else(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
# Use -Wall for clang and gcc.
if(NOT CMAKE_CXX_FLAGS MATCHES "-Wall")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall")
endif(NOT CMAKE_CXX_FLAGS MATCHES "-Wall")
# Use -Wextra for clang and gcc.
if(NOT CMAKE_CXX_FLAGS MATCHES "-Wextra")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wextra")
endif(NOT CMAKE_CXX_FLAGS MATCHES "-Wextra")
# Use -Werror for clang only.
if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
if(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror")
endif(NOT CMAKE_CXX_FLAGS MATCHES "-Werror")
endif(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
# Disable C++ exceptions.
string(REGEX REPLACE "-fexceptions" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-exceptions")
# Disable RTTI.
string(REGEX REPLACE "-frtti" "" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-rtti")
endif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
# BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to make
# it prominent in the GUI.
option(BUILD_SHARED_LIBS "Build shared libraries(DLLs)." OFF)
option(SNAPPY_BUILD_TESTS "Build Snappy's own tests." ON)
option(SNAPPY_BUILD_BENCHMARKS "Build Snappy's benchmarks" ON)
option(SNAPPY_FUZZING_BUILD "Build Snappy for fuzzing." OFF)
option(SNAPPY_REQUIRE_AVX "Target processors with AVX support." OFF)
option(SNAPPY_REQUIRE_AVX2 "Target processors with AVX2 support." OFF)
option(SNAPPY_INSTALL "Install Snappy's header and library" ON)
include(TestBigEndian)
test_big_endian(SNAPPY_IS_BIG_ENDIAN)
include(CheckIncludeFile)
check_include_file("sys/mman.h" HAVE_SYS_MMAN_H)
check_include_file("sys/resource.h" HAVE_SYS_RESOURCE_H)
check_include_file("sys/time.h" HAVE_SYS_TIME_H)
check_include_file("sys/uio.h" HAVE_SYS_UIO_H)
check_include_file("unistd.h" HAVE_UNISTD_H)
check_include_file("windows.h" HAVE_WINDOWS_H)
include(CheckLibraryExists)
check_library_exists(z zlibVersion "" HAVE_LIBZ)
check_library_exists(lzo2 lzo1x_1_15_compress "" HAVE_LIBLZO2)
check_library_exists(lz4 LZ4_compress_default "" HAVE_LIBLZ4)
include(CheckCXXCompilerFlag)
CHECK_CXX_COMPILER_FLAG("/arch:AVX" HAVE_VISUAL_STUDIO_ARCH_AVX)
CHECK_CXX_COMPILER_FLAG("/arch:AVX2" HAVE_VISUAL_STUDIO_ARCH_AVX2)
CHECK_CXX_COMPILER_FLAG("-mavx" HAVE_CLANG_MAVX)
CHECK_CXX_COMPILER_FLAG("-mbmi2" HAVE_CLANG_MBMI2)
if(SNAPPY_REQUIRE_AVX2)
if(HAVE_VISUAL_STUDIO_ARCH_AVX2)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:AVX2")
endif(HAVE_VISUAL_STUDIO_ARCH_AVX2)
if(HAVE_CLANG_MAVX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx")
endif(HAVE_CLANG_MAVX)
if(HAVE_CLANG_MBMI2)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mbmi2")
endif(HAVE_CLANG_MBMI2)
elseif (SNAPPY_REQUIRE_AVX)
if(HAVE_VISUAL_STUDIO_ARCH_AVX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:AVX")
endif(HAVE_VISUAL_STUDIO_ARCH_AVX)
if(HAVE_CLANG_MAVX)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx")
endif(HAVE_CLANG_MAVX)
endif(SNAPPY_REQUIRE_AVX2)
# Used by googletest.
check_cxx_compiler_flag(-Wno-missing-field-initializers
SNAPPY_HAVE_NO_MISSING_FIELD_INITIALIZERS)
include(CheckCXXSourceCompiles)
check_cxx_source_compiles("
int main() {
return __builtin_expect(0, 1);
}" HAVE_BUILTIN_EXPECT)
check_cxx_source_compiles("
int main() {
return __builtin_ctzll(0);
}" HAVE_BUILTIN_CTZ)
check_cxx_source_compiles("
__attribute__((always_inline)) int zero() { return 0; }
int main() {
return zero();
}" HAVE_ATTRIBUTE_ALWAYS_INLINE)
check_cxx_source_compiles("
#include <tmmintrin.h>
int main() {
const __m128i *src = 0;
__m128i dest;
const __m128i shuffle_mask = _mm_load_si128(src);
const __m128i pattern = _mm_shuffle_epi8(_mm_loadl_epi64(src), shuffle_mask);
_mm_storeu_si128(&dest, pattern);
return 0;
}" SNAPPY_HAVE_SSSE3)
check_cxx_source_compiles("
#include <immintrin.h>
int main() {
return _mm_crc32_u32(0, 1);
}" SNAPPY_HAVE_X86_CRC32)
check_cxx_source_compiles("
#include <arm_neon.h>
#include <arm_acle.h>
int main() {
return __crc32cw(0, 1);
}" SNAPPY_HAVE_NEON_CRC32)
check_cxx_source_compiles("
#include <immintrin.h>
int main() {
return _bzhi_u32(0, 1);
}" SNAPPY_HAVE_BMI2)
check_cxx_source_compiles("
#include <arm_neon.h>
int main() {
uint8_t val = 3, dup[8];
uint8x16_t v = vld1q_dup_u8(&val);
vst1q_u8(dup, v);
return 0;
}" SNAPPY_HAVE_NEON)
include(CheckSymbolExists)
check_symbol_exists("mmap" "sys/mman.h" HAVE_FUNC_MMAP)
check_symbol_exists("sysconf" "unistd.h" HAVE_FUNC_SYSCONF)
configure_file(
"cmake/config.h.in"
"${PROJECT_BINARY_DIR}/config.h"
)
# We don't want to define HAVE_ macros in public headers. Instead, we use
# CMake's variable substitution with 0/1 variables, which will be seen by the
# preprocessor as constants.
set(HAVE_SYS_UIO_H_01 ${HAVE_SYS_UIO_H})
if(NOT HAVE_SYS_UIO_H_01)
set(HAVE_SYS_UIO_H_01 0)
endif(NOT HAVE_SYS_UIO_H_01)
if (SNAPPY_FUZZING_BUILD)
if (NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
message(WARNING "Fuzzing builds are only supported with Clang")
endif (NOT "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
if(NOT CMAKE_CXX_FLAGS MATCHES "-fsanitize=address")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
endif(NOT CMAKE_CXX_FLAGS MATCHES "-fsanitize=address")
if(NOT CMAKE_CXX_FLAGS MATCHES "-fsanitize=fuzzer-no-link")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=fuzzer-no-link")
endif(NOT CMAKE_CXX_FLAGS MATCHES "-fsanitize=fuzzer-no-link")
endif (SNAPPY_FUZZING_BUILD)
configure_file(
"snappy-stubs-public.h.in"
"${PROJECT_BINARY_DIR}/snappy-stubs-public.h")
add_library(snappy "")
target_sources(snappy
PRIVATE
"snappy-internal.h"
"snappy-stubs-internal.h"
"snappy-c.cc"
"snappy-sinksource.cc"
"snappy-stubs-internal.cc"
"snappy.cc"
"${PROJECT_BINARY_DIR}/config.h"
# Only CMake 3.3+ supports PUBLIC sources in targets exported by "install".
$<$<VERSION_GREATER:CMAKE_VERSION,3.2>:PUBLIC>
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/snappy-c.h>
$<INSTALL_INTERFACE:include/snappy-c.h>
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/snappy-sinksource.h>
$<INSTALL_INTERFACE:include/snappy-sinksource.h>
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/snappy.h>
$<INSTALL_INTERFACE:include/snappy.h>
$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}/snappy-stubs-public.h>
$<INSTALL_INTERFACE:include/snappy-stubs-public.h>
)
target_include_directories(snappy
PUBLIC
$<BUILD_INTERFACE:${PROJECT_BINARY_DIR}>
$<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
$<INSTALL_INTERFACE:include>
)
set_target_properties(snappy
PROPERTIES VERSION ${PROJECT_VERSION} SOVERSION ${PROJECT_VERSION_MAJOR})
target_compile_definitions(snappy PRIVATE -DHAVE_CONFIG_H)
if(BUILD_SHARED_LIBS)
set_target_properties(snappy PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS ON)
endif(BUILD_SHARED_LIBS)
if(SNAPPY_BUILD_TESTS OR SNAPPY_BUILD_BENCHMARKS)
add_library(snappy_test_support "")
target_sources(snappy_test_support
PRIVATE
"snappy-test.cc"
"snappy-test.h"
"snappy_test_data.cc"
"snappy_test_data.h"
"${PROJECT_BINARY_DIR}/config.h"
)
# Test files include snappy-test.h, HAVE_CONFIG_H must be defined.
target_compile_definitions(snappy_test_support PUBLIC -DHAVE_CONFIG_H)
target_link_libraries(snappy_test_support snappy)
if(HAVE_LIBZ)
target_link_libraries(snappy_test_support z)
endif(HAVE_LIBZ)
if(HAVE_LIBLZO2)
target_link_libraries(snappy_test_support lzo2)
endif(HAVE_LIBLZO2)
if(HAVE_LIBLZ4)
target_link_libraries(snappy_test_support lz4)
endif(HAVE_LIBLZ4)
target_include_directories(snappy_test_support
BEFORE PUBLIC
"${PROJECT_SOURCE_DIR}"
)
endif(SNAPPY_BUILD_TESTS OR SNAPPY_BUILD_BENCHMARKS)
if(SNAPPY_BUILD_TESTS)
enable_testing()
# Prevent overriding the parent project's compiler/linker settings on Windows.
set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
set(install_gtest OFF)
set(install_gmock OFF)
set(build_gmock ON)
# This project is tested using GoogleTest.
add_subdirectory("third_party/googletest")
# GoogleTest triggers a missing field initializers warning.
if(SNAPPY_HAVE_NO_MISSING_FIELD_INITIALIZERS)
set_property(TARGET gtest
APPEND PROPERTY COMPILE_OPTIONS -Wno-missing-field-initializers)
set_property(TARGET gmock
APPEND PROPERTY COMPILE_OPTIONS -Wno-missing-field-initializers)
endif(SNAPPY_HAVE_NO_MISSING_FIELD_INITIALIZERS)
add_executable(snappy_unittest "")
target_sources(snappy_unittest
PRIVATE
"snappy_unittest.cc"
)
target_link_libraries(snappy_unittest snappy_test_support gmock_main gtest)
add_test(
NAME snappy_unittest
WORKING_DIRECTORY "${PROJECT_SOURCE_DIR}"
COMMAND "${PROJECT_BINARY_DIR}/snappy_unittest")
add_executable(snappy_test_tool "")
target_sources(snappy_test_tool
PRIVATE
"snappy_test_tool.cc"
)
target_link_libraries(snappy_test_tool snappy_test_support)
endif(SNAPPY_BUILD_TESTS)
if(SNAPPY_BUILD_BENCHMARKS)
add_executable(snappy_benchmark "")
target_sources(snappy_benchmark
PRIVATE
"snappy_benchmark.cc"
)
target_link_libraries(snappy_benchmark snappy_test_support benchmark_main)
# This project uses Google benchmark for benchmarking.
set(BENCHMARK_ENABLE_TESTING OFF CACHE BOOL "" FORCE)
set(BENCHMARK_ENABLE_EXCEPTIONS OFF CACHE BOOL "" FORCE)
add_subdirectory("third_party/benchmark")
endif(SNAPPY_BUILD_BENCHMARKS)
if(SNAPPY_FUZZING_BUILD)
add_executable(snappy_compress_fuzzer "")
target_sources(snappy_compress_fuzzer
PRIVATE "snappy_compress_fuzzer.cc"
)
target_link_libraries(snappy_compress_fuzzer snappy)
set_target_properties(snappy_compress_fuzzer
PROPERTIES LINK_FLAGS "-fsanitize=fuzzer"
)
add_executable(snappy_uncompress_fuzzer "")
target_sources(snappy_uncompress_fuzzer
PRIVATE "snappy_uncompress_fuzzer.cc"
)
target_link_libraries(snappy_uncompress_fuzzer snappy)
set_target_properties(snappy_uncompress_fuzzer
PROPERTIES LINK_FLAGS "-fsanitize=fuzzer"
)
endif(SNAPPY_FUZZING_BUILD)
# Must be included before CMAKE_INSTALL_INCLUDEDIR is used.
include(GNUInstallDirs)
if(SNAPPY_INSTALL)
install(TARGETS snappy
EXPORT SnappyTargets
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
)
install(
FILES
"snappy-c.h"
"snappy-sinksource.h"
"snappy.h"
"${PROJECT_BINARY_DIR}/snappy-stubs-public.h"
DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
)
include(CMakePackageConfigHelpers)
configure_package_config_file(
"cmake/${PROJECT_NAME}Config.cmake.in"
"${PROJECT_BINARY_DIR}/cmake/${PROJECT_NAME}Config.cmake"
INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
)
write_basic_package_version_file(
"${PROJECT_BINARY_DIR}/cmake/${PROJECT_NAME}ConfigVersion.cmake"
COMPATIBILITY SameMajorVersion
)
install(
EXPORT SnappyTargets
NAMESPACE Snappy::
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
)
install(
FILES
"${PROJECT_BINARY_DIR}/cmake/${PROJECT_NAME}Config.cmake"
"${PROJECT_BINARY_DIR}/cmake/${PROJECT_NAME}ConfigVersion.cmake"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
)
endif(SNAPPY_INSTALL)