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CMakeLists.txt
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#=============================================================================
# CMake build system files
#
# Copyright (c) 2014-2023 pocl developers
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.
#
#=============================================================================
cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
cmake_policy(SET CMP0067 OLD)
project(pocl)
set(CMAKE_PROJECT_DESCRIPTION "pocl is a portable OpenCl runtime.")
MESSAGE(STATUS "CMAKE_SYSTEM_NAME: ${CMAKE_SYSTEM_NAME}")
MESSAGE(STATUS "CMAKE_SYSTEM_PROCESSOR: ${CMAKE_SYSTEM_PROCESSOR}")
MESSAGE(STATUS "CMAKE_LIBRARY_ARCHITECTURE: ${CMAKE_LIBRARY_ARCHITECTURE}")
set(LATEST_KNOWN_CXX_STD_VERSION "20")
set(SUPPORTED_CXX_STD_VERSION "11")
option(ENABLE_LATEST_CXX_STD "Upgrade C++ standard version to ${LATEST_KNOWN_CXX_STD_VERSION}. Required to get rid of unused variables warnings in compilers not supporting [[gnu::*]] attributes. Can bring other benefits, including performance and efficiency ones. Before a pull request build with this disabled." OFF)
if(ENABLE_LATEST_CXX_STD)
set(CMAKE_CXX_STANDARD "${LATEST_KNOWN_CXX_STD_VERSION}")
else()
set(CMAKE_CXX_STANDARD "${SUPPORTED_CXX_STD_VERSION}")
endif()
set(POCL_CMAKE_CXX_STANDARD ${CMAKE_CXX_STANDARD})
set(CMAKE_CXX_STANDARD_REQUIRED ON)
set(CMAKE_CXX_EXTENSIONS OFF)
# if variable FEATURE_X isn't defined, sets it to DEFAULT_FEATURE_X;
# also, if DEFAULT_FEATURE_X is 0, prevents FEATURE_X being 1
# since it takes DEFAULT_FEATURE_X=0 to mean "FEATURE_X is unavailable"
macro(setup_cached_var VARNAME DESCRIPTION DOCS_FEATURE_IS_UNAVAILABLE DOCS_REQUESTED_DISABLING_FEATURE)
if(DEFINED ${VARNAME})
set(_CACHED "(cached)")
else()
set(_CACHED "")
set(${VARNAME} ${DEFAULT_${VARNAME}})
endif()
if(${VARNAME} AND (NOT ${DEFAULT_${VARNAME}}))
message(WARNING "${DOCS_FEATURE_IS_UNAVAILABLE}")
set(${VARNAME} 0)
set(_CACHED "(override)")
endif()
if((NOT ${VARNAME}) AND ${DEFAULT_${VARNAME}} )
message(STATUS "${DOCS_REQUESTED_DISABLING_FEATURE}")
endif()
if(${VARNAME})
message(STATUS "${DESCRIPTION} ${_CACHED}: 1")
else()
message(STATUS "${DESCRIPTION} ${_CACHED}: 0")
endif()
endmacro()
include(CheckCCompilerFlag)
include(CPackComponent)
macro(pass_through_cpack_vars)
get_cmake_property(cpackVarsToPassthrough VARIABLES)
foreach(varName ${cpackVarsToPassthrough})
if(varName MATCHES "^CPACK_DEBIAN_")
message(STATUS "${varName}")
set("${varName}" "${${varName}}" PARENT_SCOPE)
endif()
endforeach()
endmacro()
# don't allow implicit function declarations
if(UNIX)
if((CMAKE_C_COMPILER_ID STREQUAL "GNU") OR
(CMAKE_C_COMPILER_ID STREQUAL "Clang"))
check_c_compiler_flag("-Wincompatible-pointer-types" HAVE_WARN_INCOMPATIBLE_POINTER_TYPES)
set(FORBID_IMPLICIT_FUNCTIONS "-Werror=implicit-function-declaration")
if (HAVE_WARN_INCOMPATIBLE_POINTER_TYPES)
set(FORBID_IMPLICIT_FUNCTIONS ${FORBID_IMPLICIT_FUNCTIONS} "-Werror=incompatible-pointer-types")
endif()
add_compile_options("$<$<COMPILE_LANGUAGE:C>:${FORBID_IMPLICIT_FUNCTIONS}>")
add_compile_options("-Wno-ignored-attributes")
else()
message(WARNING "Don't know how to forbid this compiler from allowing implicit function declarations.")
endif()
endif()
set(MAJOR_VERSION 6)
set(MINOR_VERSION 0)
set(VERSION_SUFFIX_FIXED_TEXT "-pre")
set(VERSION_SUFFIX "${VERSION_SUFFIX_FIXED_TEXT}")
set(VERSION_STRING ${MAJOR_VERSION}.${MINOR_VERSION}${VERSION_SUFFIX})
set(POCL_VERSION_BASE ${VERSION_STRING})
# required b/c SHARED libs defaults to ON while OBJECT defaults to OFF
set(CMAKE_POSITION_INDEPENDENT_CODE ON)
# CMake doesn't add "-pie" by default for executables (CMake issue #14983)
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -pie")
enable_testing()
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
#####################################################
if(EXISTS "${CMAKE_SOURCE_DIR}/.git")
set(DEFAULT_BUILD_TYPE "Debug")
else()
set(DEFAULT_BUILD_TYPE "RelWithDebInfo")
endif()
if(NOT CMAKE_BUILD_TYPE)
message(STATUS "Setting build type to '${DEFAULT_BUILD_TYPE}' as none was specified.")
set(CMAKE_BUILD_TYPE "${DEFAULT_BUILD_TYPE}" CACHE
STRING "Choose the type of build." FORCE)
# Set the possible values of build type for cmake-gui
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
"Debug" "Release" "MinSizeRel" "RelWithDebInfo")
endif()
if(CMAKE_BUILD_TYPE STREQUAL "Debug")
set(LLVM_VERIFY_MODULE_DEFAULT 1)
else()
set(LLVM_VERIFY_MODULE_DEFAULT 0)
endif()
##################################################################################
macro(set_expr VAR)
if(${ARGN})
set(${VAR} 1)
else()
set(${VAR} 0)
endif()
endmacro()
find_program(BASH "bash")
find_program(MAKE_PROGRAM NAMES "make")
find_program(GIT_CMD "git")
set_expr(HAVE_GIT GIT_CMD)
if(HAVE_GIT)
execute_process(COMMAND "${GIT_CMD}" "rev-parse" "HEAD"
OUTPUT_VARIABLE GIT_COMMIT
RESULT_VARIABLE EXITCODE
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_STRIP_TRAILING_WHITESPACE)
endif()
if(HAVE_GIT AND (VERSION_SUFFIX MATCHES "pre") AND (EXITCODE EQUAL 0))
message(STATUS "Pocl source Git commit: ${GIT_COMMIT}")
execute_process(COMMAND "${GIT_CMD}" "branch" "--contains" "${GIT_COMMIT}"
OUTPUT_VARIABLE GIT_BRANCH
RESULT_VARIABLE EXITCODE
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_STRIP_TRAILING_WHITESPACE)
message(STATUS "Pocl source Git branch: ${GIT_BRANCH}")
execute_process(COMMAND "${GIT_CMD}" describe "--always" "--long" "--all" "${GIT_COMMIT}"
OUTPUT_VARIABLE GIT_DESCRIBE
RESULT_VARIABLE EXITCODE
WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}"
OUTPUT_STRIP_TRAILING_WHITESPACE)
string(REPLACE "heads/" "" GIT_DESCRIBE "${GIT_DESCRIBE}")
message(STATUS "Pocl source Git describe: ${GIT_DESCRIBE}")
set(VERSION_SUFFIX "${VERSION_SUFFIX_FIXED_TEXT} ${GIT_DESCRIBE}")
set(VERSION_STRING ${MAJOR_VERSION}.${MINOR_VERSION}${VERSION_SUFFIX})
set(POCL_VERSION_FULL "${VERSION_STRING}")
else()
message(STATUS "No git and/or not a prerelease -> not adding git commit to version.")
set(POCL_VERSION_FULL "${POCL_VERSION_BASE}")
endif()
set(CPACK_PACKAGE_NAME pocl)
set(CPACK_PACKAGE_VENDOR pocl)
set(CPACK_PACKAGE_VERSION_MAJOR "${MAJOR_VERSION}")
set(CPACK_PACKAGE_VERSION_MINOR "${MINOR_VERSION}")
set(CPACK_PACKAGE_VERSION "${MAJOR_VERSION}.${MINOR_VERSION}~${VERSION_SUFFIX_FIXED_TEXT}")
if(HAVE_GIT)
set(CPACK_PACKAGE_VERSION "${CPACK_PACKAGE_VERSION}.${GIT_COMMIT}")
endif()
##################################################################################
option(ENABLE_LLVM "Build pocl with LLVM. Default is ON." ON)
option(STATIC_LLVM "If ON, link to static LLVM libraries. OFF (default) = link to shared LLVM libraries." OFF)
option(BUILD_SHARED_LIBS "ON=Build shared libs, OFF=static libs" ON)
option(POCL_DEBUG_MESSAGES
"Enable debug messages from pocl (useful for OpenCL developers), must be enabled at runtime, with env var POCL_DEBUG"
ON)
option(ENABLE_LOADABLE_DRIVERS "Enable drivers to be dlopen()-ed at pocl runtime, instead of being linked into libpocl" ON)
option(ENABLE_HSA "Enable the HSA base profile runtime device driver" OFF)
option(ENABLE_CUDA "Enable the CUDA device driver for NVIDIA devices" OFF)
option(ENABLE_CUDNN "Enable the CUDNN for the CUDA device driver, requires CUDA" OFF)
option(ENABLE_VULKAN "Experimental and incomplete driver that uses the Vulkan API for controlling the device. Please refer to the user manual for the status and open tasks" OFF)
option(ENABLE_LEVEL0 "Experimental and incomplete driver that uses the Level Zero API for controlling the device. Please refer to the user manual for the status and open tasks" OFF)
option(ENABLE_TBB_DEVICE "Enable the Intel TBB device driver." OFF)
option(ENABLE_HOST_CPU_DEVICES "Add host CPUs as OpenCL devices (cpu & cpu-minimal)." ON)
option(ENABLE_HOST_CPU_DEVICES_OPENMP "Enables OpenMP support for Host CPU devices (cpu driver only, cpu-minimal driver remains single-threaded)" OFF)
option(ENABLE_PROXY_DEVICE "Enable proxy driver for proxying to another OpenCL implementation" OFF)
option(ENABLE_PROXY_DEVICE_INTEROP "Enable OpenGL- or EGL-interop with the proxy driver" OFF)
option(ENABLE_ALMAIF_DEVICE "Enable the generic hardware accelerator device driver." OFF)
option(KERNEL_CACHE_DEFAULT "Default value for the kernel compile cache. If disabled, pocl will still use kernel cache for intermediate compilation files, but will clean up them on exit. You can still enable keeping the files it at runtime with an env var." ON)
option(ENABLE_REMOTE_SERVER "Build the 'pocld' server daemon for the remote driver" OFF)
option(ENABLE_REMOTE_CLIENT "Build the client library of the remote driver" OFF)
option(POCL_ICD_ABSOLUTE_PATH "Use absolute path in pocl.icd" ON)
option(ENABLE_POCL_BUILDING "When OFF, env var POCL_BUILDING has no effect. Defaults to ON" ON)
option(ENABLE_PRINTF_IMMEDIATE_FLUSH "[currently only applies to CPU drivers] if enabled, printf is flushed immediately when encountered, instead of after all NDRange workgroups are finished" ON)
if (ENABLE_PROXY_DEVICE)
set(VISIBILITY_HIDDEN_DEFAULT OFF)
else()
set(VISIBILITY_HIDDEN_DEFAULT ON)
endif()
option(VISIBILITY_HIDDEN "Build with -fvisibility=hidden -fvisibility-inlines-hidden" ${VISIBILITY_HIDDEN_DEFAULT})
if(VISIBILITY_HIDDEN)
add_compile_options(-fvisibility=hidden)
add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fvisibility-inlines-hidden>)
endif()
# Ninja Job Pool support
set(PARALLEL_COMPILE_JOBS "" CACHE STRING
"Define the maximum number of concurrent compilation jobs (Ninja only).")
if(PARALLEL_COMPILE_JOBS)
if(CMAKE_GENERATOR STREQUAL "Ninja")
set_property(GLOBAL APPEND PROPERTY JOB_POOLS compile_job_pool=${PARALLEL_COMPILE_JOBS})
set(CMAKE_JOB_POOL_COMPILE compile_job_pool)
endif()
endif()
set(PARALLEL_LINK_JOBS "" CACHE STRING
"Define the maximum number of concurrent link jobs (Ninja only).")
if(CMAKE_GENERATOR STREQUAL "Ninja")
if(PARALLEL_LINK_JOBS)
set_property(GLOBAL APPEND PROPERTY JOB_POOLS link_job_pool=${PARALLEL_LINK_JOBS})
set(CMAKE_JOB_POOL_LINK link_job_pool)
endif()
endif()
if(NOT CMAKE_GENERATOR STREQUAL "Ninja" AND (PARALLEL_COMPILE_JOBS OR PARALLEL_LINK_JOBS))
message(WARNING "Job pooling is only available with Ninja generators.")
endif()
#### these are mostly useful for pocl developers
option(ENABLE_EXTRA_VALIDITY_CHECKS "Enable extra checks on cl_* object validity" OFF)
option(DEVELOPER_MODE "This will SIGNIFICANTLY reduce PoCL's performance, but speeds up its compilation for faster development-test cycles. Only turn on if you know what you're doing." OFF)
option(USE_POCL_MEMMANAGER "Enables custom memory manager. Except for special circumstances, this should be disabled." OFF)
option(EXAMPLES_USE_GIT_MASTER "If enabled, some of the external testsuites in examples/ will try to use sources from Git master, instead of releases. This may result in failure to build or run the examples" OFF)
option(ENABLE_POCLCC "Build poclcc. Defaults to ON" ON)
option(ENABLE_TESTS "Build tests. Defaults to ON" ON)
option(ENABLE_EXAMPLES "Build examples. Defaults to ON" ON)
option(ENABLE_RDMA "Enable usage of RDMA libraries for memory allocations. Requires libRDMAcm and libverbs" OFF)
option(ENABLE_TRAFFIC_MONITOR "Enable network traffic monitoring & logging in remote device" OFF)
OPTION(RENAME_POCL "rename PoCL's ocl functions to PO<ocl_function>. Allows an user to call both PoCL and another ocl application" OFF)
##########################################################
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(HOST_DEVICE_ADDRESS_BITS 64)
elseif(CMAKE_SIZEOF_VOID_P EQUAL 4)
set(HOST_DEVICE_ADDRESS_BITS 32)
else()
message(FATAL_ERROR "Cannot figure out HOST_DEVICE_ADDRESS_BITS")
endif()
# printf buffer size, in KB
if(NOT DEFINED PRINTF_BUFFER_SIZE)
set(PRINTF_BUFFER_SIZE 16384 CACHE STRING "printf buffer size, in KB")
endif()
##################################################################################
if(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc64le")
set(POWERPC 1)
set(POWERPC64LE 1)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "ppc")
set(POWERPC 1)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "mips")
set(MIPS 1)
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(arm|aarch64)")
set(ARM 1)
if(HOST_DEVICE_ADDRESS_BITS MATCHES "32")
set(ARM32 1)
else()
set(ARM64 1)
endif()
elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "(i.86|AMD64|x86_64|amd64)")
set(X86 1)
if(HOST_DEVICE_ADDRESS_BITS MATCHES "32")
set(I386 1)
else()
set(X86_64 1)
endif()
endif()
include(ProcessorCount)
ProcessorCount(HOST_CPU_CORECOUNT)
if(HOST_CPU_CORECOUNT LESS 1)
set(HOST_CPU_CORECOUNT 1)
endif()
message(STATUS "Host CPU cores: ${HOST_CPU_CORECOUNT}")
######################################################################################
function(chmod FILE EXEC)
if(EXEC)
set(PERMS FILE_PERMISSIONS OWNER_READ OWNER_WRITE OWNER_EXECUTE GROUP_READ GROUP_EXECUTE WORLD_READ WORLD_EXECUTE)
else()
#set(PERMS FILE_PERMISSIONS OWNER_READ OWNER_WRITE GROUP_READ WORLD_READ)
return()
endif()
if(CMAKE_VERSION VERSION_LESS 3.19.0)
find_program(CHMOD_PROG chmod)
execute_process(COMMAND "${CHMOD_PROG}" "0755" ${FILE})
else()
file(CHMOD "${FILE}" ${PERMS})
endif()
endfunction()
function(rename_if_different SRC DST EXEC)
if(EXISTS "${DST}")
file(MD5 "${SRC}" OLD_MD5)
file(MD5 "${DST}" NEW_MD5)
if(NOT OLD_MD5 STREQUAL NEW_MD5)
file(RENAME "${SRC}" "${DST}")
chmod("${DST}" ${EXEC})
endif()
else()
file(RENAME "${SRC}" "${DST}")
chmod("${DST}" ${EXEC})
endif()
endfunction()
######################################################################################
# Recent versions of CMake can make use of Ninja's console pool to avoid
# buffering the output of particular commands.
set(COMMAND_USES_TERMINAL USES_TERMINAL)
include(GNUInstallDirs)
# for libpocl.so
set(POCL_INSTALL_PUBLIC_LIBDIR "${CMAKE_INSTALL_FULL_LIBDIR}" CACHE PATH "POCL public libdir")
# for libpocl-devices-*.so
set(POCL_INSTALL_PRIVATE_LIBDIR "${CMAKE_INSTALL_FULL_LIBDIR}/pocl" CACHE PATH "POCL private libdir")
# for pocl.icd
set(POCL_INSTALL_ICD_VENDORDIR "${CMAKE_INSTALL_FULL_SYSCONFDIR}/OpenCL/vendors" CACHE PATH "POCL ICD file destination")
# for kernel-<target>.bc
set(POCL_INSTALL_PRIVATE_DATADIR "${CMAKE_INSTALL_FULL_DATADIR}/pocl" CACHE PATH "POCL private datadir")
# for poclu.h
set(POCL_INSTALL_PUBLIC_HEADER_DIR "${CMAKE_INSTALL_FULL_INCLUDEDIR}" CACHE PATH "POCL public header dir")
# for _kernel.h et al
set(POCL_INSTALL_PRIVATE_HEADER_DIR "${POCL_INSTALL_PRIVATE_DATADIR}/include" CACHE PATH "POCL private header dir")
# for pocl-standalone et al
set(POCL_INSTALL_PUBLIC_BINDIR "${CMAKE_INSTALL_FULL_BINDIR}" CACHE PATH "POCL public bindir")
# for PoclConfig.cmake & stuff
set(POCL_INSTALL_CMAKE_CONFIG_DIR "${POCL_INSTALL_PRIVATE_LIBDIR}/cmake" CACHE PATH "Installation directory for CMake files")
# TODO maybe use output of pkg-config --variable=pc_path pkg-config ?
set(POCL_INSTALL_PKGCONFIG_DIR "${POCL_INSTALL_PUBLIC_LIBDIR}/pkgconfig" CACHE PATH "Destination for pocl.pc")
if(APPLE)
set(CMAKE_MACOSX_RPATH ON)
set(POCL_INSTALL_OPENCL_HEADER_DIR "${POCL_INSTALL_PUBLIC_HEADER_DIR}/OpenCL" CACHE PATH "POCL header dir for OpenCL headers")
else()
set(POCL_INSTALL_OPENCL_HEADER_DIR "${POCL_INSTALL_PUBLIC_HEADER_DIR}/CL" CACHE PATH "POCL header dir for OpenCL headers")
endif()
######################################################################################
set(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
option(HARDENING_ENABLE "Enable hardening against various attacks. May worsen performance" OFF)
if(HARDENING_ENABLE)
include(Hardening)
else()
function(harden target)
endfunction()
endif()
find_package(PkgConfig MODULE)
if(NOT DEFINED DEFAULT_ENABLE_HWLOC)
find_package(Hwloc)
if(NOT Hwloc_FOUND)
message(STATUS "hwloc package not found")
set(DEFAULT_ENABLE_HWLOC OFF CACHE INTERNAL "default hwloc")
else()
if("${Hwloc_VERSION}" VERSION_LESS "1.0")
message(FATAL_ERROR "Hwloc version must be >= 1.0 !")
endif()
message(STATUS "Hwloc_VERSION ${Hwloc_VERSION}")
message(STATUS "Hwloc_LIBRARIES ${Hwloc_LIBRARIES}")
message(STATUS "Hwloc_INCLUDE_DIRS ${Hwloc_INCLUDE_DIRS}")
set(DEFAULT_ENABLE_HWLOC ON CACHE INTERNAL "default hwloc")
endif()
endif()
option(ENABLE_HWLOC "Enable Portable Hardware Locality software package"
${DEFAULT_ENABLE_HWLOC})
setup_cached_var(ENABLE_HWLOC "Using hwloc"
"Requested build with hwloc, but no hwloc found!"
"Hwloc found, but requested build without it")
include(sanitizers)
######################################################################################
if(ENABLE_TBB_DEVICE)
# related documentation: https://github.com/oneapi-src/oneTBB/tree/tbb_2020/cmake#binary-package-integration
find_package(TBB REQUIRED)
if(TARGET TBB::tbb)
set(TBB_IMPORTED_TARGETS TBB::tbb)
elseif(NOT TBB_FOUND AND PKG_CONFIG_FOUND)
message(STATUS "searching for TBB with pkg-config")
pkg_check_modules(TBB tbb>=2015)
if(TBB_FOUND)
set(TBB_IMPORTED_TARGETS "${TBB_LIBRARIES}" CACHE STRING "TBB libraries" FORCE)
endif()
endif()
if(NOT TBB_INCLUDE_DIRS)
get_target_property(TBB_INCLUDE_DIRS TBB::tbb INTERFACE_INCLUDE_DIRECTORIES)
endif()
if(NOT TBB_LIBRARIES)
get_target_property(TBB_LIBRARIES TBB::tbb IMPORTED_LOCATION_RELEASE)
endif()
if(NOT TBB_FOUND)
message(FATAL_ERROR "Can't find TBB libraries")
endif()
message(STATUS "Found TBB library: ${TBB_LIBRARIES} with include dirs: ${TBB_INCLUDE_DIRS}" )
# The tbb device depends on the pthread device which depends on the basic device. ENABLE_HOST_CPU_DEVICES enables both.
set(ENABLE_HOST_CPU_DEVICES 1)
endif()
if(ENABLE_HOST_CPU_DEVICES_OPENMP)
find_package(OpenMP)
if(NOT OpenMP_CXX_FOUND)
message(FATAL_ERROR "ENABLE_HOST_CPU_DEVICES_OPENMP specified but OpenMP not found.")
endif()
endif()
######################################################################################
if(NOT HOST_CPU_CACHELINE_SIZE)
set(CL_SIZE 0)
if(UNIX OR CMAKE_HOST_SYSTEM_NAME MATCHES "Linux|Darwin")
find_program(GETCONF "getconf")
if(GETCONF)
execute_process(COMMAND "getconf" "LEVEL1_DCACHE_LINESIZE"
RESULT_VARIABLE RES OUTPUT_VARIABLE CL_SIZE)
if(RES)
message(WARNING "getconf exited with nonzero status!")
set(CL_SIZE 0)
else()
# getconf may in rare conditions return "undefined" value
if (CL_SIZE STREQUAL "undefined\n")
set(CL_SIZE 0)
endif()
# getconf sometimes just returns zero
if(NOT (CL_SIZE EQUAL 0))
string(STRIP "${CL_SIZE}" CL_SIZE)
message(STATUS "L1D Cacheline size detected: ${CL_SIZE}")
set(HOST_CPU_CACHELINE_SIZE "${CL_SIZE}" CACHE STRING "L1D Cacheline size")
endif()
endif()
endif()
endif()
if(CL_SIZE EQUAL 0)
message(WARNING "Unable to detect cacheline size - assuming 64byte cacheline, override with -DHOST_CPU_CACHELINE_SIZE=<number> (Note: this is merely used for optimization, at worst pocl will be slightly slower)")
set(HOST_CPU_CACHELINE_SIZE "64" CACHE STRING "L1D Cacheline size")
endif()
endif()
######################################################################################
#
# Find executables to few tools required during build
#
find_program(PATCH_EXEC
NAMES patch
HINTS ENV PATH
)
find_program(XARGS_EXEC
NAMES xargs
HINTS ENV PATH
)
if(NOT PATCH_EXEC)
message(FATAL_ERROR "Could not find patch command.")
endif()
if(NOT XARGS_EXEC)
message(FATAL_ERROR "Could not find xargs command.")
endif()
######################################################################################
if(ENABLE_LLVM)
include(LLVM RESULT_VARIABLE RES)
if(NOT RES)
message(FATAL_ERROR "Could not load LLVM.cmake")
endif()
if(ENABLE_HOST_CPU_DEVICES)
if(NOT DEFINED HOST_DEVICE_BUILD_HASH)
set(HOST_DEVICE_BUILD_HASH "${LLC_TRIPLE}")
endif()
if(INTEL_SDE_AVX512)
set(HOST_CPU_FORCED 1 CACHE INTERNAL "CPU is forced by user" FORCE)
set(SELECTED_HOST_CPU "skylake-avx512" CACHE STRING "The Host CPU to use with llc" FORCE)
endif()
endif()
#
# LLVM_OPAQUE_POINTERS
#
# llvm has changed from typed pointers to opaque pointers, their guidance is
#
# From https://llvm.org/docs/OpaquePointers.html, version support
# LLVM 14: Supports all necessary APIs for migrating to opaque pointers and deprecates/removes
# incompatible APIs. However, using opaque pointers in the optimization pipeline is not fully
# supported. This release can be used to make out-of-tree code compatible with opaque
# pointers, but opaque pointers should not be enabled in production.
#
# LLVM 15: Opaque pointers are enabled by default. Typed pointers are still available, but only
# supported on a best-effort basis and may be untested.
#
# LLVM 16: Only opaque pointers will be supported. Typed pointers will not be supported.
#
# Up to llvm 14 including, ENABLE_LLVM_OPAQUE_POINTERS is force-set to OFF
# For llvm 15 ENABLE_LLVM_OPAQUE_POINTERS is a CMake option, defaulting to OFF,
# Post llvm 15, ENABLE_LLVM_OPAQUE_POINTERS is force-set to ON.
# Clang 16 accepts -Xclang -no-opaque-pointers but silently produces bitcode with opaque pointers.
# reason is that 1) it's unfinished 2) for properly handling images, we need opaque types,
# which will only be available in LLVM 16+
# TODO: This should be temporary. After the opaque pointer conversion in PoCL is finished,
# we should remove this macro and use LLVM_OLDER_THAN_X macros only, like in the rest
# of the code, since this macro adds another layer of complexity.
if(LLVM_VERSION VERSION_LESS_EQUAL 14.0)
set(ENABLE_LLVM_OPAQUE_POINTERS OFF CACHE INTERNAL "llvm opaque pointers" FORCE)
elseif(LLVM_VERSION VERSION_EQUAL 15.0)
if(ENABLE_LEVEL0)
set(ENABLE_LLVM_OPAQUE_POINTERS OFF CACHE INTERNAL "llvm opaque pointers" FORCE)
else()
option(ENABLE_LLVM_OPAQUE_POINTERS "Handle the change to llvm opaque pointers." ON)
endif()
else()
set(ENABLE_LLVM_OPAQUE_POINTERS ON CACHE INTERNAL "llvm opaque pointers" FORCE)
endif()
if (ENABLE_LLVM_OPAQUE_POINTERS)
set(LLVM_OPAQUE_POINTERS 1)
endif()
else()
if(ENABLE_HOST_CPU_DEVICES AND (NOT DEFINED HOST_DEVICE_BUILD_HASH))
message(FATAL_ERROR "For compiler-less builds of CPU backend, you must define HOST_DEVICE_BUILD_HASH")
endif()
endif()
######################################################################################
if(ENABLE_HSA)
include(HSA RESULT_VARIABLE RES)
if(NOT RES)
message(FATAL_ERROR "Could not load HSA.cmake")
endif()
endif()
######################################################################################
if (NOT MSVC)
find_program(LINK_COMMAND
NAMES ld${CMAKE_EXECUTABLE_SUFFIX}
HINTS ENV PATH
)
else()
set(LINK_COMMAND "${CLANGXX}")
endif()
######################################################################################
if(UNIX)
include(CheckCSourceCompiles)
include(CheckSymbolExists)
# don't allow implicit function declarations
set(CMAKE_REQUIRED_FLAGS "-std=c99 ${FORBID_IMPLICIT_FUNCTIONS}")
if (CMAKE_SYSTEM_NAME MATCHES "Linux")
set(CMAKE_REQUIRED_LIBRARIES "rt")
endif ()
CHECK_SYMBOL_EXISTS("fork"
"sys/types.h;unistd.h"
HAVE_FORK)
CHECK_SYMBOL_EXISTS("fsync"
"unistd.h"
HAVE_FSYNC)
CHECK_SYMBOL_EXISTS("sleep"
"unistd.h"
HAVE_SLEEP)
CHECK_SYMBOL_EXISTS("getrlimit"
"sys/time.h;sys/resource.h"
HAVE_GETRLIMIT)
CHECK_SYMBOL_EXISTS("utime"
"sys/types.h;utime.h"
HAVE_UTIME)
CHECK_SYMBOL_EXISTS("ANNOTATE_HAPPENS_BEFORE"
"valgrind/helgrind.h"
HAVE_VALGRIND)
set(CMAKE_REQUIRED_DEFINITIONS "-D_POSIX_C_SOURCE=200809L")
CHECK_SYMBOL_EXISTS("futimens"
"fcntl.h;sys/stat.h"
HAVE_FUTIMENS)
set(CMAKE_REQUIRED_DEFINITIONS "-D_POSIX_C_SOURCE=200112L")
CHECK_SYMBOL_EXISTS("posix_memalign"
"stdlib.h"
HAVE_POSIX_MEMALIGN)
set(CMAKE_REQUIRED_DEFINITIONS "-D_POSIX_C_SOURCE=199309L")
CHECK_SYMBOL_EXISTS("clock_gettime"
"time.h"
HAVE_CLOCK_GETTIME)
CHECK_SYMBOL_EXISTS("fdatasync"
"unistd.h"
HAVE_FDATASYNC)
set(CMAKE_REQUIRED_DEFINITIONS "-D_BSD_SOURCE" "-D_DEFAULT_SOURCE")
CHECK_SYMBOL_EXISTS("mkdtemp"
"stdlib.h;unistd.h"
HAVE_MKDTEMP)
CHECK_SYMBOL_EXISTS("mkstemps"
"stdlib.h;unistd.h"
HAVE_MKSTEMPS)
CHECK_SYMBOL_EXISTS("vfork"
"sys/types.h;unistd.h"
HAVE_VFORK)
set(CMAKE_REQUIRED_DEFINITIONS "-D_GNU_SOURCE")
CHECK_SYMBOL_EXISTS("mkostemps"
"stdlib.h"
HAVE_MKOSTEMPS)
set(CMAKE_REQUIRED_LIBRARIES "dl")
CHECK_SYMBOL_EXISTS("dladdr"
"dlfcn.h"
HAVE_DLADDR)
unset(CMAKE_REQUIRED_DEFINITIONS)
unset(CMAKE_REQUIRED_FLAGS)
unset(CMAKE_REQUIRED_LIBRARIES)
else()
set(HAVE_CLOCK_GETTIME 0)
set(HAVE_FDATASYNC 0)
set(HAVE_FSYNC 0)
set(HAVE_SLEEP 0)
set(HAVE_MKOSTEMPS 0)
set(HAVE_MKSTEMPS 0)
set(HAVE_MKDTEMP 0)
set(HAVE_FUTIMENS 0)
set(HAVE_FORK 0)
set(HAVE_GETRLIMIT 0)
set(HAVE_VFORK 0)
set(HAVE_UTIME 0)
set(HAVE_DLADDR 0)
set(HAVE_VALGRIND 0)
endif()
######################################################################################
function(check_64bit_atomics varname)
check_c_source_compiles("
#include <stdint.h>
uint64_t x = 0;
int main()
{
__atomic_add_fetch(&x, 1, __ATOMIC_SEQ_CST);
__atomic_sub_fetch(&x, 1, __ATOMIC_SEQ_CST);
return x;
}
" ${varname})
endfunction(check_64bit_atomics)
# platforms w/o lockfree 64bit atomics need to link with -latomic
if(UNIX)
check_64bit_atomics(HAVE_64BIT_ATOMICS_WITHOUT_LIB)
if(HAVE_64BIT_ATOMICS_WITHOUT_LIB)
set(HAVE_64BIT_ATOMICS_WITH_LIB FALSE)
else()
set(OLD_CMAKE_REQUIRED_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES})
list(APPEND CMAKE_REQUIRED_LIBRARIES "atomic")
check_64bit_atomics(HAVE_64BIT_ATOMICS_WITH_LIB)
set(CMAKE_REQUIRED_LIBRARIES ${OLD_CMAKE_REQUIRED_LIBRARIES})
if(NOT HAVE_64BIT_ATOMICS_WITH_LIB)
message(SEND_ERROR "Missing 64-bit atomic increment")
endif()
endif()
endif()
######################################################################################
if(UNIX AND ENABLE_LLVM AND HAVE_DLADDR)
option(ENABLE_RELOCATION "make libpocl relocatable" ON)
else()
message(STATUS "Relocation not available")
set(ENABLE_RELOCATION OFF CACHE INTERNAL "libpocl relocatable" FORCE)
endif()
if(ENABLE_RELOCATION)
file(RELATIVE_PATH POCL_INSTALL_PRIVATE_DATADIR_REL ${POCL_INSTALL_PUBLIC_LIBDIR} ${POCL_INSTALL_PRIVATE_DATADIR})
message(STATUS "Private Datadir Relative path: ${POCL_INSTALL_PRIVATE_DATADIR_REL}")
install(FILES ${CLANG_OPENCL_HEADERS}
DESTINATION "${POCL_INSTALL_PRIVATE_DATADIR}/include" COMPONENT "dev")
endif()
file(RELATIVE_PATH POCL_INSTALL_PRIVATE_LIBDIR_REL ${POCL_INSTALL_PUBLIC_LIBDIR} ${POCL_INSTALL_PRIVATE_LIBDIR})
######################################################################################
# IPO support for runtime library
if(POLICY CMP0069)
cmake_policy(SET CMP0069 NEW)
endif()
if(NOT DEFINED DEFAULT_ENABLE_IPO)
set(DEFAULT_ENABLE_IPO OFF CACHE BOOL "IPO" FORCE)
if(NOT CMAKE_VERSION VERSION_LESS "3.9")
if(DEVELOPER_MODE)
set(IPO 0)
else()
include(CheckIPOSupported)
check_ipo_supported(RESULT IPO OUTPUT IPO_OUTPUT)
endif()
set(DEFAULT_ENABLE_IPO ${IPO} CACHE BOOL "IPO" FORCE)
message(STATUS "Compiler supports IPO: ${DEFAULT_ENABLE_IPO}")
#message(STATUS "IPO check message: ${IPO_OUTPUT}")
endif()
endif()
setup_cached_var(ENABLE_IPO "Enable Link-Time Optimization (IPO) while building pocl runtime"
"Requested build with IPO, but IPO is not available"
"IPO available, but requested build without it")
if(HAVE_VALGRIND)
option(ENABLE_VALGRIND "Enable valgrind support (this may slow down PoCL)" OFF)
else()
set(ENABLE_VALGRIND OFF CACHE BOOL "valgrind is not available" FORCE)
endif()
######################################################################################
option(ENABLE_SLEEF "Use SLEEF for kernel library" ON)
option(ENABLE_CONFORMANCE "Enable conformance to OpenCL standard. \
Enabling this option this does not guarantee conformance (depends on hardware), \
but CMake will give errors if options that conflict with conformance \
are used. It also disables advertising incomplete extensions." OFF)
option(ENABLE_UNFINISHED_EXTENSIONS "Advertise extensions in device queries which \
might work partially, but have known unfinished features." OFF)
if(ENABLE_CONFORMANCE AND (NOT ENABLE_SLEEF))
message(FATAL_ERROR "conformance needs enabled SLEEF")
endif()
######################################################################################
# fully device-side printf on devices which support it (only CPU backend ATM), disabled by default.
# this requires 128bit integer support because of the code in "errol" float-to-string conversion routine
# the output is not 100% compatible with glibc's printf (%f with large argument prints zeroes after
# last significant digit - 16-18th digit or so, unlike glibc which prints digits up to decimal point).
if(CLANG_HAS_128B_MATH)
option(ENABLE_POCL_FLOAT_CONVERSION "Enable use of pocl's own float-to-decimal conversion code in OpenCL printf(). Defaults to OFF (uses snprintf from C library). Requires compiler-rt." OFF)
else()
set(ENABLE_POCL_FLOAT_CONVERSION OFF CACHE INTERNAL "pocl's own float-to-decimal conversion code")
endif()
unset(FLOATCONV_FLAG)
if(ENABLE_POCL_FLOAT_CONVERSION)
# force link with Clang; otherwise not needed on x86 but in this case we need rtlib
set(FLOATCONV_FLAG "-DENABLE_POCL_FLOAT_CONVERSION")
endif()
unset(OPAQUE_PTR_FLAGS)
if(LLVM_VERSION VERSION_EQUAL 15.0)
if(LLVM_OPAQUE_POINTERS)
set(OPAQUE_PTR_FLAGS "-Xclang -opaque-pointers")
else()
set(OPAQUE_PTR_FLAGS "-Xclang -no-opaque-pointers")
endif()
endif()
######################################################################################
# for kernel code, disable PIC & stack protector
#
# it seems PIC and stack-protector defaults somehow depend on
# clang build type or environment. PIC causes problems with
# constant addrspace variables, and stack protector likely slows
# down the kernels, so it needs to be determined whether it's worth
# the trouble.
set(DEFAULT_KERNEL_CL_FLAGS "-xcl -fno-stack-protector -fPIC ${FLOATCONV_FLAG} ${OPAQUE_PTR_FLAGS}")
set(DEFAULT_KERNEL_C_FLAGS "-xc -std=c11 -D__CBUILD__ -fno-math-errno -fno-stack-protector -fPIC ${FLOATCONV_FLAG} ${OPAQUE_PTR_FLAGS}")
set(DEFAULT_KERNEL_CXX_FLAGS "-xc++ -std=c++11 -fno-stack-protector -fPIC ${FLOATCONV_FLAG} ${OPAQUE_PTR_FLAGS}")
set(EXTRA_KERNEL_FLAGS "" CACHE STRING "Extra arguments to all kernel compilation commands (defaults to empty)")
set(EXTRA_KERNEL_CL_FLAGS "" CACHE STRING "Extra arguments to kernel CL compiler (defaults to empty)")
set(EXTRA_KERNEL_CXX_FLAGS "" CACHE STRING "Extra arguments to kernel CXX compiler (defaults to empty)")
set(EXTRA_KERNEL_C_FLAGS "" CACHE STRING "Extra arguments to kernel C compiler (defaults to empty)")
set(KERNEL_CXX_FLAGS "${DEFAULT_KERNEL_CXX_FLAGS}${EXTRA_KERNEL_FLAGS}${EXTRA_KERNEL_CXX_FLAGS}")
set(KERNEL_CL_FLAGS "${DEFAULT_KERNEL_CL_FLAGS}${EXTRA_KERNEL_FLAGS}${EXTRA_KERNEL_CL_FLAGS}")
set(KERNEL_C_FLAGS "${DEFAULT_KERNEL_C_FLAGS}${EXTRA_KERNEL_FLAGS}${EXTRA_KERNEL_C_FLAGS}")
######################################################################################
if(UNIX)
if(APPLE)
# MacOS ld outputs useless warnings like
# ld: warning: -macosx_version_min not specificed, assuming 10.7
# suppress them with -w.
set(DEFAULT_HOST_LD_FLAGS "-dynamiclib -w -lm")
elseif(ANDROID)
set(DEFAULT_HOST_LD_FLAGS "-L/system/lib/ -shared -ldl -lc /system/lib/crtbegin_so.o /system/lib/crtend_so.o")
else()
set(DEFAULT_HOST_LD_FLAGS "-shared")
endif()
set(LIBMATH "-lm")
elseif(WIN32)
set(LIBMATH)
endif()
if(CLANG_NEEDS_RTLIB)
set(DEFAULT_HOST_LD_FLAGS "${DEFAULT_HOST_LD_FLAGS} --rtlib=compiler-rt")
endif()
######################################################################################
if(UNIX)
if(APPLE)
# TODO MACOSX_BUNDLE target prop
set(ICD_LD_FLAGS "-single_module")
else()
set(ICD_LD_FLAGS "-Wl,-Bsymbolic")
endif()
endif()
######################################################################################
set(SPIRV OFF)
# drivers that consume SPIRV directly don't need LLVM or LLVM-SPIRV;
# those that consume SPIRV indirectly need both, but it might be useful to disable LLVM-SPIRV translator
if(ENABLE_LLVM AND LLVM_SPIRV AND (EXISTS "${LLVM_SPIRV}"))
option(ENABLE_SPIRV "Enable SPIR-V support (default ON when available)" ON)
else()
set(ENABLE_SPIRV OFF CACHE INTERNAL "SPIR-V enabled" FORCE)
endif()
if(ENABLE_SPIRV)
# required for the wrapper generator
find_package(Python3 REQUIRED COMPONENTS Interpreter)
endif()
######################################################################################
set(HAVE_DLFCN_H OFF CACHE BOOL "dlopen" FORCE)
if(WIN32 AND (NOT MINGW))
message(STATUS "Using LoadLibrary/FreeLibrary in Windows, libltdl not needed.")
elseif(UNIX)
if (CMAKE_CROSSCOMPILING AND (NOT ENABLE_HOST_CPU_DEVICES) AND (NOT ENABLE_HSA))
message(STATUS "Cross-compiling without CPU/HSA devices -> skipping LIBDL search")
else()
find_library(DL_LIB "dl")
find_file(DL_H "dlfcn.h")
if(DL_LIB AND DL_H)
message(STATUS "libdl found")
else()
message(STATUS "libdl not found, assuming dlopen() is in libc")
set(DL_LIB "")
endif()
if(DL_H)
get_filename_component(DL_H_INCLUDE_DIR "${DL_H}" DIRECTORY)
string(FIND "${CMAKE_C_IMPLICIT_INCLUDE_DIRECTORIES}" "${DL_H_INCLUDE_DIR}" LTPOSITION)
# include the directory of dlfcn.h, if its not in the default system include dirs
# also when cross-compiling this includes <cross-compile-root>/usr/include, which screws things up
if((LTPOSITION LESS "0") AND (NOT CMAKE_CROSSCOMPILING))
include_directories("${DL_H_INCLUDE_DIR}")
endif()
set(HAVE_DLFCN_H ON CACHE BOOL "dlfcn.h" FORCE)
else()
message(FATAL_ERROR "Could not find dlfcn.h!")
endif()
endif()
else()
message(STATUS "Unknown OS, don't know how to load a dynamic library")
endif()
######################################################################################
set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
set(THREADS_PREFER_PTHREAD_FLAG TRUE)
find_package(Threads REQUIRED)