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build: Add CMake-based build system
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‎.gitignore

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test*
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bench
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# CMake build directories.
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/build*

‎CMakeLists.txt

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cmake_minimum_required(VERSION 3.22)
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project(minisketch
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VERSION 0.0.1
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DESCRIPTION "A library for BCH-based set reconciliation"
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HOMEPAGE_URL "http://github.com/sipa/minisketch/"
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LANGUAGES CXX
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)
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if(DEFINED CMAKE_CXX_STANDARD)
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if(CMAKE_CXX_STANDARD EQUAL 98 OR CMAKE_CXX_STANDARD LESS 11)
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message(FATAL_ERROR "This project requires at least C++11")
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endif()
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else()
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set(CMAKE_CXX_STANDARD 11)
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endif()
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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if(NOT DEFINED CMAKE_CXX_EXTENSIONS)
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set(CMAKE_CXX_EXTENSIONS OFF)
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endif()
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option(MINISKETCH_TESTS "Build tests." ON)
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option(MINISKETCH_BENCHMARK "Build benchmark." OFF)
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set(supported_fields "2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,61,62,63,64")
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set(MINISKETCH_FIELDS ${supported_fields} CACHE STRING "Comma-separated list of field sizes to build. Default=all. Available sizes: ${supported_fields}.")
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string(REPLACE "," ";" supported_field_list "${supported_fields}")
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string(REPLACE "," ";" provided_field_list "${MINISKETCH_FIELDS}")
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foreach(field IN LISTS supported_field_list)
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if(NOT field IN_LIST provided_field_list)
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set(have_disabled_fields TRUE)
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add_compile_definitions(DISABLE_FIELD_${field})
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endif()
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endforeach()
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set(CMAKE_CXX_VISIBILITY_PRESET hidden)
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set(CMAKE_VISIBILITY_INLINES_HIDDEN TRUE)
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if(MSVC)
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add_compile_options(/Zc:__cplusplus /W4 /wd4060 /wd4065 /wd4100 /wd4127 /wd4146 /wd4244 /wd4267 /wd4310)
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else()
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add_compile_options(-Wall)
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endif()
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if(MINGW)
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add_link_options(-static)
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endif()
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add_subdirectory(src)
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message("\n")
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message("minisketch configure summary")
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message("============================")
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if(BUILD_SHARED_LIBS)
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set(library_type "Shared")
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else()
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set(library_type "Static")
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endif()
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message("Library type .......................... ${library_type}")
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message("Build options:")
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if(HAVE_CLMUL)
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set(clmul_status "ENABLED")
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else()
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set(clmul_status "DISABLED")
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endif()
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message(" clmul fields ........................ ${clmul_status}")
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if(CMAKE_CXX_STANDARD GREATER_EQUAL 20)
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set(clz_status "c++20")
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elseif(HAVE_CLZ)
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set(clz_status "compiler builtin")
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else()
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set(clz_status "default")
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endif()
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message(" clz implementation .................. ${clz_status}")
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message("Optional binaries:")
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message(" benchmark ........................... ${MINISKETCH_BENCHMARK}")
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message(" tests ............................... ${MINISKETCH_TESTS}")
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message("")
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if(CMAKE_CROSSCOMPILING)
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set(cross_status "TRUE, for ${CMAKE_SYSTEM_NAME}, ${CMAKE_SYSTEM_PROCESSOR}")
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else()
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set(cross_status "FALSE")
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endif()
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message("Cross compiling ....................... ${cross_status}")
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message("C++ compiler .......................... ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}, ${CMAKE_CXX_COMPILER}")
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get_directory_property(compile_options COMPILE_OPTIONS)
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string(REPLACE ";" " " compile_options "${compile_options}")
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macro(print_flags_per_config config indent dots)
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string(TOUPPER "${config}" config_uppercase)
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string(STRIP "${CMAKE_CXX_FLAGS} ${CMAKE_CXX_FLAGS_${config_uppercase}}" combined_cxx_flags)
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string(STRIP "${combined_cxx_flags} ${compile_options}" combined_cxx_flags)
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message("${indent}" "C++ flags ...........................${dots} ${combined_cxx_flags}")
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endmacro()
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get_property(is_multi_config GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
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if(is_multi_config)
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list(JOIN CMAKE_CONFIGURATION_TYPES ", " configs)
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message("Available build configurations ........ ${configs}")
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if(CMAKE_GENERATOR MATCHES "Visual Studio")
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set(default_config "Debug")
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else()
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list(GET CMAKE_CONFIGURATION_TYPES 0 default_config)
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endif()
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message("Default build configuration ........... ${default_config}")
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foreach(config IN LISTS CMAKE_CONFIGURATION_TYPES)
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message("'${config}' build configuration:")
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print_flags_per_config("${config}" " " "")
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endforeach()
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else()
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message("Build configuration ................... ${CMAKE_BUILD_TYPE}")
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print_flags_per_config("${CMAKE_BUILD_TYPE}" "" "..")
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endif()
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if(have_disabled_fields)
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message("")
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message(WARNING
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"Only compiling in support for field sizes: ${MINISKETCH_FIELDS}\n"
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"This means the library will lack support for other field sizes entirely.")
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endif()
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message("")

‎src/CMakeLists.txt

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# Check for clmul instructions support.
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if(MSVC)
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set(CLMUL_CXXFLAGS "")
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else()
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set(CLMUL_CXXFLAGS "-mpclmul")
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endif()
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include(CMakePushCheckState)
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cmake_push_check_state(RESET)
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set(CMAKE_REQUIRED_FLAGS ${CLMUL_CXXFLAGS})
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include(CheckCXXSourceCompiles)
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check_cxx_source_compiles("
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#include <immintrin.h>
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#include <stdint.h>
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int main()
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{
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__m128i a = _mm_cvtsi64_si128((uint64_t)7);
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__m128i b = _mm_clmulepi64_si128(a, a, 37);
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__m128i c = _mm_srli_epi64(b, 41);
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__m128i d = _mm_xor_si128(b, c);
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uint64_t e = _mm_cvtsi128_si64(d);
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return e == 0;
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}
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" HAVE_CLMUL
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)
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cmake_pop_check_state()
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add_subdirectory(fields)
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add_library(minisketch minisketch.cpp)
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target_include_directories(minisketch
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PUBLIC
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$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>
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)
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target_link_libraries(minisketch
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PRIVATE
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minisketch_field_generic_sources
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$<$<BOOL:${HAVE_CLMUL}>:minisketch_field_clmul_sources>
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)
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add_library(minisketch_verify EXCLUDE_FROM_ALL minisketch.cpp)
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target_compile_definitions(minisketch_verify
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PUBLIC
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MINISKETCH_VERIFY
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)
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target_link_libraries(minisketch_verify
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PRIVATE
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minisketch_field_generic_sources
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$<$<BOOL:${HAVE_CLMUL}>:minisketch_field_clmul_sources>
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)
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if(MINISKETCH_TESTS)
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add_executable(test test.cpp)
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target_link_libraries(test PRIVATE minisketch)
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add_executable(test-verify test.cpp)
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target_link_libraries(test-verify PRIVATE minisketch_verify)
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endif()
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if(MINISKETCH_BENCHMARK)
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add_executable(bench bench.cpp)
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target_link_libraries(bench PRIVATE minisketch)
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endif()
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if(CMAKE_CXX_STANDARD LESS 20)
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# Check for working clz builtins.
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check_cxx_source_compiles("
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int main()
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{
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unsigned a = __builtin_clz(1);
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unsigned long b = __builtin_clzl(1);
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unsigned long long c = __builtin_clzll(1);
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}
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" HAVE_CLZ
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)
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target_compile_definitions(minisketch
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PRIVATE
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$<$<BOOL:${HAVE_CLZ}>:HAVE_CLZ>
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)
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target_compile_definitions(minisketch_verify
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PRIVATE
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$<$<BOOL:${HAVE_CLZ}>:HAVE_CLZ>
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)
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endif()
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‎src/fields/CMakeLists.txt

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add_library(minisketch_field_generic_sources INTERFACE)
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target_sources(minisketch_field_generic_sources
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INTERFACE
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generic_1byte.cpp
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generic_2bytes.cpp
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generic_3bytes.cpp
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generic_4bytes.cpp
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generic_5bytes.cpp
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generic_6bytes.cpp
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generic_7bytes.cpp
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generic_8bytes.cpp
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)
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add_library(minisketch_field_clmul_sources INTERFACE)
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target_sources(minisketch_field_clmul_sources
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INTERFACE
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clmul_1byte.cpp
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clmul_2bytes.cpp
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clmul_3bytes.cpp
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clmul_4bytes.cpp
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clmul_5bytes.cpp
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clmul_6bytes.cpp
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clmul_7bytes.cpp
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clmul_8bytes.cpp
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)
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target_compile_definitions(minisketch_field_clmul_sources
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INTERFACE
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HAVE_CLMUL
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)
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target_compile_options(minisketch_field_clmul_sources
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INTERFACE
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${CLMUL_CXXFLAGS}
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)

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