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CMakeLists.txt
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CMakeLists.txt
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cmake_minimum_required(VERSION 3.0)
# option() honors normal variables.
# see: https://cmake.org/cmake/help/git-stage/policy/CMP0077.html
if(POLICY CMP0077)
cmake_policy(SET CMP0077 NEW)
endif()
project(CpuFeatures VERSION 0.6.0 LANGUAGES C)
set(CMAKE_C_STANDARD 99)
# Default Build Type to be Release
if(NOT CMAKE_BUILD_TYPE)
set(CMAKE_BUILD_TYPE "Release" CACHE STRING
"Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel."
FORCE)
endif(NOT CMAKE_BUILD_TYPE)
# BUILD_SHARED_LIBS is a standard CMake variable, but we declare it here to make
# it prominent in the GUI.
# cpu_features uses bit-fields which are - to some extends - implementation-defined (see https://en.cppreference.com/w/c/language/bit_field).
# As a consequence it is discouraged to use cpu_features as a shared library because different compilers may interpret the code in different ways.
# Prefer static linking from source whenever possible.
option(BUILD_SHARED_LIBS "Build library as shared." OFF)
# Force PIC on unix when building shared libs
# see: https://en.wikipedia.org/wiki/Position-independent_code
if(BUILD_SHARED_LIBS AND UNIX)
option(CMAKE_POSITION_INDEPENDENT_CODE "Build with Position Independant Code." ON)
endif()
include(CheckIncludeFile)
include(CheckSymbolExists)
include(GNUInstallDirs)
macro(setup_include_and_definitions TARGET_NAME)
target_include_directories(${TARGET_NAME}
PUBLIC $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include>
PRIVATE $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}/include/internal>
)
target_compile_definitions(${TARGET_NAME}
PUBLIC STACK_LINE_READER_BUFFER_SIZE=1024
)
endmacro()
set(PROCESSOR_IS_MIPS FALSE)
set(PROCESSOR_IS_ARM FALSE)
set(PROCESSOR_IS_AARCH64 FALSE)
set(PROCESSOR_IS_X86 FALSE)
set(PROCESSOR_IS_POWER FALSE)
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^mips")
set(PROCESSOR_IS_MIPS TRUE)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(aarch64|arm64)")
set(PROCESSOR_IS_AARCH64 TRUE)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
set(PROCESSOR_IS_ARM TRUE)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(x86_64)|(AMD64|amd64)|(^i.86$)")
set(PROCESSOR_IS_X86 TRUE)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^(powerpc|ppc)")
set(PROCESSOR_IS_POWER TRUE)
endif()
macro(add_cpu_features_headers_and_sources HDRS_LIST_NAME SRCS_LIST_NAME)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpu_features_macros.h)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpu_features_cache_info.h)
file(GLOB IMPL_SOURCES CONFIGURE_DEPENDS "${PROJECT_SOURCE_DIR}/src/impl_*.c")
list(APPEND ${SRCS_LIST_NAME} ${IMPL_SOURCES})
if(PROCESSOR_IS_MIPS)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_mips.h)
elseif(PROCESSOR_IS_ARM)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_arm.h)
elseif(PROCESSOR_IS_AARCH64)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_aarch64.h)
elseif(PROCESSOR_IS_X86)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_x86.h)
list(APPEND ${SRCS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/internal/cpuid_x86.h)
elseif(PROCESSOR_IS_POWER)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_ppc.h)
else()
message(FATAL_ERROR "Unsupported architectures ${CMAKE_SYSTEM_PROCESSOR}")
endif()
endmacro()
#
# library : utils
#
add_library(utils OBJECT
${PROJECT_SOURCE_DIR}/include/internal/bit_utils.h
${PROJECT_SOURCE_DIR}/include/internal/filesystem.h
${PROJECT_SOURCE_DIR}/include/internal/stack_line_reader.h
${PROJECT_SOURCE_DIR}/include/internal/string_view.h
${PROJECT_SOURCE_DIR}/src/filesystem.c
${PROJECT_SOURCE_DIR}/src/stack_line_reader.c
${PROJECT_SOURCE_DIR}/src/string_view.c
)
setup_include_and_definitions(utils)
#
# library : unix_based_hardware_detection
#
if(UNIX)
add_library(unix_based_hardware_detection OBJECT
${PROJECT_SOURCE_DIR}/include/internal/hwcaps.h
${PROJECT_SOURCE_DIR}/src/hwcaps.c
)
setup_include_and_definitions(unix_based_hardware_detection)
check_include_file(dlfcn.h HAVE_DLFCN_H)
if(HAVE_DLFCN_H)
target_compile_definitions(unix_based_hardware_detection PRIVATE HAVE_DLFCN_H)
endif()
check_symbol_exists(getauxval "sys/auxv.h" HAVE_STRONG_GETAUXVAL)
if(HAVE_STRONG_GETAUXVAL)
target_compile_definitions(unix_based_hardware_detection PRIVATE HAVE_STRONG_GETAUXVAL)
endif()
endif()
#
# library : cpu_features
#
set (CPU_FEATURES_HDRS)
set (CPU_FEATURES_SRCS)
add_cpu_features_headers_and_sources(CPU_FEATURES_HDRS CPU_FEATURES_SRCS)
list(APPEND CPU_FEATURES_SRCS $<TARGET_OBJECTS:utils>)
if(NOT PROCESSOR_IS_X86 AND UNIX)
list(APPEND CPU_FEATURES_SRCS $<TARGET_OBJECTS:unix_based_hardware_detection>)
endif()
add_library(cpu_features ${CPU_FEATURES_HDRS} ${CPU_FEATURES_SRCS})
set_target_properties(cpu_features PROPERTIES PUBLIC_HEADER "${CPU_FEATURES_HDRS}")
setup_include_and_definitions(cpu_features)
target_link_libraries(cpu_features PUBLIC ${CMAKE_DL_LIBS})
target_include_directories(cpu_features
PUBLIC $<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}/cpu_features>
)
if(PROCESSOR_IS_X86)
if(APPLE)
target_compile_definitions(cpu_features PRIVATE HAVE_SYSCTLBYNAME)
endif()
endif()
add_library(CpuFeature::cpu_features ALIAS cpu_features)
#
# program : list_cpu_features
#
add_executable(list_cpu_features ${PROJECT_SOURCE_DIR}/src/utils/list_cpu_features.c)
target_link_libraries(list_cpu_features PRIVATE cpu_features)
add_executable(CpuFeature::list_cpu_features ALIAS list_cpu_features)
#
# ndk_compat
#
if(ANDROID)
add_subdirectory(ndk_compat)
endif()
#
# tests
#
include(CTest)
if(BUILD_TESTING)
# Automatically incorporate googletest into the CMake Project if target not
# found.
enable_language(CXX)
set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF) # prefer use of -std11 instead of -gnustd11
if(NOT TARGET gtest OR NOT TARGET gmock_main)
# Download and unpack googletest at configure time.
configure_file(
cmake/googletest.CMakeLists.txt.in
googletest-download/CMakeLists.txt
)
execute_process(
COMMAND ${CMAKE_COMMAND} -G "${CMAKE_GENERATOR}" .
RESULT_VARIABLE result
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download)
if(result)
message(FATAL_ERROR "CMake step for googletest failed: ${result}")
endif()
execute_process(
COMMAND ${CMAKE_COMMAND} --build .
RESULT_VARIABLE result
WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/googletest-download)
if(result)
message(FATAL_ERROR "Build step for googletest failed: ${result}")
endif()
# Prevent overriding the parent project's compiler/linker settings on
# Windows.
set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
# Add googletest directly to our build. This defines the gtest and
# gtest_main targets.
add_subdirectory(${CMAKE_BINARY_DIR}/googletest-src
${CMAKE_BINARY_DIR}/googletest-build
EXCLUDE_FROM_ALL)
endif()
add_subdirectory(test)
endif()
#
# Install cpu_features and list_cpu_features
#
include(GNUInstallDirs)
install(TARGETS cpu_features list_cpu_features
EXPORT CpuFeaturesTargets
PUBLIC_HEADER DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/cpu_features
ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
BUNDLE DESTINATION ${CMAKE_INSTALL_BINDIR}
)
install(EXPORT CpuFeaturesTargets
NAMESPACE CpuFeatures::
DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/CpuFeatures
COMPONENT Devel
)
include(CMakePackageConfigHelpers)
configure_package_config_file(cmake/CpuFeaturesConfig.cmake.in
"${PROJECT_BINARY_DIR}/CpuFeaturesConfig.cmake"
INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/CpuFeatures"
NO_SET_AND_CHECK_MACRO
NO_CHECK_REQUIRED_COMPONENTS_MACRO
)
write_basic_package_version_file(
"${PROJECT_BINARY_DIR}/CpuFeaturesConfigVersion.cmake"
COMPATIBILITY SameMajorVersion
)
install(
FILES
"${PROJECT_BINARY_DIR}/CpuFeaturesConfig.cmake"
"${PROJECT_BINARY_DIR}/CpuFeaturesConfigVersion.cmake"
DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/CpuFeatures"
COMPONENT Devel
)