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cpu_features/CMakeLists.txt
Guillaume Chatelet 9a8f04b24c
[NFC] Generate separate tables via macro (#137) 
This is a non functional change, it allows:
 - Getting rid of `unix_features_aggregator`
 - Have a single blob describing the features
 - Fix wrong mocking of `hwcaps`

Downside: abuse of macros makes the code slightly magical and harder to understand.
It think it's still an improvement over the current situation as there's less repetition and less chances to get something wrong.
2020-10-12 09:50:35 +00:00

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8.7 KiB
CMake
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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 0.5.0 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_TESTING is a standard CMake variable, but we declare it here to make it
# prominent in the GUI.
option(BUILD_TESTING "Enable test (depends on googletest)." OFF)
# 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)
# PIC
option(BUILD_PIC "Build with Position Independant Code." OFF) # Default is off at least for GCC
# Force PIC on unix when building shared libs
# see: https://en.wikipedia.org/wiki/Position-independent_code
if(BUILD_SHARED_LIBS AND UNIX)
set(BUILD_PIC 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(${TARGET_NAME}
PUBLIC STACK_LINE_READER_BUFFER_SIZE=1024
)
endmacro()
set(PROCESSOR_IS_MIPS FALSE)
set(PROCESSOR_IS_ARM FALSE)
set(PROCESSOR_IS_AARCH64 FALSE)
set(PROCESSOR_IS_X86 FALSE)
set(PROCESSOR_IS_POWER FALSE)
if(CMAKE_SYSTEM_PROCESSOR MATCHES "^mips")
set(PROCESSOR_IS_MIPS TRUE)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^arm")
set(PROCESSOR_IS_ARM TRUE)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^aarch64")
set(PROCESSOR_IS_AARCH64 TRUE)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(x86_64)|(AMD64|amd64)|(^i.86$)")
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)
if(PROCESSOR_IS_MIPS)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_mips.h)
list(APPEND ${SRCS_LIST_NAME} ${PROJECT_SOURCE_DIR}/src/cpuinfo_mips.c)
elseif(PROCESSOR_IS_ARM)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_arm.h)
list(APPEND ${SRCS_LIST_NAME} ${PROJECT_SOURCE_DIR}/src/cpuinfo_arm.c)
elseif(PROCESSOR_IS_AARCH64)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_aarch64.h)
list(APPEND ${SRCS_LIST_NAME} ${PROJECT_SOURCE_DIR}/src/cpuinfo_aarch64.c)
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)
list(APPEND ${SRCS_LIST_NAME} ${PROJECT_SOURCE_DIR}/src/cpuinfo_x86.c)
elseif(PROCESSOR_IS_POWER)
list(APPEND ${HDRS_LIST_NAME} ${PROJECT_SOURCE_DIR}/include/cpuinfo_ppc.h)
list(APPEND ${SRCS_LIST_NAME} ${PROJECT_SOURCE_DIR}/src/cpuinfo_ppc.c)
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
)
set_property(TARGET utils PROPERTY POSITION_INDEPENDENT_CODE ${BUILD_PIC})
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()
set_property(TARGET unix_based_hardware_detection PROPERTY POSITION_INDEPENDENT_CODE ${BUILD_PIC})
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})
set_property(TARGET cpu_features PROPERTY POSITION_INDEPENDENT_CODE ${BUILD_PIC})
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}
)
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
)
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