# Distributed under the OSI-approved BSD 3-Clause License. See accompanying

# file Copyright.txt or https://cmake.org/licensing for details.

# determine the compiler to use for C++ programs

# NOTE, a generator may set CMAKE_SYCL_COMPILER before

# loading this file to force a compiler.

# use environment variable SYCL first if defined by user, next use

# the cmake variable CMAKE_GENERATOR_SYCL which can be defined by a generator

# as a default compiler

# If the internal cmake variable _CMAKE_TOOLCHAIN_PREFIX is set, this is used

# as prefix for the tools (e.g. arm-elf-g++, arm-elf-ar etc.)

#

# Sets the following variables:

# CMAKE_SYCL_COMPILER

# CMAKE_COMPILER_IS_GNUSYCL

# CMAKE_AR

# CMAKE_RANLIB

#

# If not already set before, it also sets

# _CMAKE_TOOLCHAIN_PREFIX

#list(APPEND CMAKE_MODULE_PATH ${CMAKE_ROOT})

include(CMakeDetermineCompiler)

# Load system-specific compiler preferences for this language.

#include(Platform/${CMAKE_SYSTEM_NAME}-Determine-SYCL OPTIONAL)

#include(Platform/${CMAKE_SYSTEM_NAME}-SYCL OPTIONAL)

if(NOT CMAKE_SYCL_COMPILER_NAMES)

set(CMAKE_SYCL_COMPILER_NAMES icpx)

endif()

if(${CMAKE_GENERATOR} MATCHES "Visual Studio")

elseif("${CMAKE_GENERATOR}" MATCHES "Green Hills MULTI")

elseif("${CMAKE_GENERATOR}" MATCHES "Xcode")

set(CMAKE_SYCL_COMPILER_XCODE_TYPE sourcecode.cpp.cpp)

_cmake_find_compiler_path(SYCL)

else()

if(NOT CMAKE_SYCL_COMPILER)

set(CMAKE_SYCL_COMPILER_INIT NOTFOUND)

# prefer the environment variable SYCL

if(NOT $ENV{SYCL} STREQUAL "")

get_filename_component(CMAKE_SYCL_COMPILER_INIT $ENV{SYCL} PROGRAM PROGRAM_ARGS CMAKE_SYCL_FLAGS_ENV_INIT)

if(CMAKE_SYCL_FLAGS_ENV_INIT)

set(CMAKE_SYCL_COMPILER_ARG1 "${CMAKE_SYCL_FLAGS_ENV_INIT}" CACHE STRING "Arguments to SYCL compiler")

endif()

if(NOT EXISTS ${CMAKE_SYCL_COMPILER_INIT})

message(FATAL_ERROR "Could not find compiler set in environment variable SYCL:\n$ENV{SYCL}.\n${CMAKE_SYCL_COMPILER_INIT}")

endif()

endif()

# next prefer the generator specified compiler

if(CMAKE_GENERATOR_SYCL)

if(NOT CMAKE_SYCL_COMPILER_INIT)

set(CMAKE_SYCL_COMPILER_INIT ${CMAKE_GENERATOR_SYCL})

endif()

endif()

# finally list compilers to try

if(NOT CMAKE_SYCL_COMPILER_INIT)

set(CMAKE_SYCL_COMPILER_LIST icpx icx)

if(NOT CMAKE_HOST_WIN32)

# FIXME(#24314): Add support for the GNU-like icpx compiler driver

# on Windows, first introduced by Intel oneAPI 2023.0.

list(APPEND CMAKE_SYCL_COMPILER_LIST icpx)

endif()

endif()

_cmake_find_compiler(SYCL)

else()

_cmake_find_compiler_path(SYCL)

endif()

mark_as_advanced(CMAKE_SYCL_COMPILER)

# Each entry in this list is a set of extra flags to try

# adding to the compile line to see if it helps produce

# a valid identification file.

set(CMAKE_SYCL_COMPILER_ID_TEST_FLAGS_FIRST)

set(CMAKE_SYCL_COMPILER_ID_TEST_FLAGS

"-fsycl"

# Try compiling to an object file only.

"-c"

# IAR does not detect language automatically

"--c++"

"--ec++"

# ARMClang need target options

"--target=arm-arm-none-eabi -mcpu=cortex-m3"

# MSVC needs at least one include directory for __has_include to function,

# but custom toolchains may run MSVC with no INCLUDE env var and no -I flags.

# Also avoid linking so this works with no LIB env var.

"-c -I__does_not_exist__"

)

endif()

if(CMAKE_SYCL_COMPILER_TARGET)

set(CMAKE_SYCL_COMPILER_ID_TEST_FLAGS_FIRST "-c --target=${CMAKE_SYCL_COMPILER_TARGET}")

endif()

# Build a small source file to identify the compiler.

if(NOT CMAKE_SYCL_COMPILER_ID_RUN)

set(CMAKE_SYCL_COMPILER_ID_RUN 1)

# Try to identify the compiler.

set(CMAKE_SYCL_COMPILER_ID)

set(CMAKE_SYCL_PLATFORM_ID)

file(READ ${CMAKE_ROOT}/Modules/CMakePlatformId.h.in

CMAKE_SYCL_COMPILER_ID_PLATFORM_CONTENT)

# The IAR compiler produces weird output.

# See https://gitlab.kitware.com/cmake/cmake/-/issues/10176#note_153591

list(APPEND CMAKE_SYCL_COMPILER_ID_VENDORS IAR)

set(CMAKE_SYCL_COMPILER_ID_VENDOR_FLAGS_IAR )

set(CMAKE_SYCL_COMPILER_ID_VENDOR_REGEX_IAR "IAR .+ Compiler")

# Match the link line from xcodebuild output of the form

# Ld ...

# ...

# /path/to/cc ...CompilerIdSYCL/...

# to extract the compiler front-end for the language.

set(CMAKE_SYCL_COMPILER_ID_TOOL_MATCH_REGEX "\nLd[^\n]*(\n[ \t]+[^\n]*)*\n[ \t]+([^ \t\r\n]+)[^\r\n]*-o[^\r\n]*CompilerIdSYCL/(\\./)?(CompilerIdSYCL.(framework|xctest|build/[^ \t\r\n]+)/)?CompilerIdSYCL[ \t\n\\\"]")

set(CMAKE_SYCL_COMPILER_ID_TOOL_MATCH_INDEX 2)

include(${CMAKE_ROOT}/Modules/CMakeDetermineCompilerId.cmake)

set(SYCLFLAGS "-fsycl -Werror")

CMAKE_DETERMINE_COMPILER_ID(SYCL SYCLFLAGS CMakeSYCLCompilerId.cpp)

_cmake_find_compiler_sysroot(SYCL)

# Set old compiler and platform id variables.

if(CMAKE_SYCL_COMPILER_ID STREQUAL "GNU")

set(CMAKE_COMPILER_IS_GNUSYCL 1)

endif()

else()

if(NOT DEFINED CMAKE_SYCL_COMPILER_FRONTEND_VARIANT)

# Some toolchain files set our internal CMAKE_SYCL_COMPILER_ID_RUN

# variable but are not aware of CMAKE_SYCL_COMPILER_FRONTEND_VARIANT.

# They pre-date our support for the GNU-like variant targeting the

# MSVC ABI so we do not consider that here.

if(CMAKE_SYCL_COMPILER_ID STREQUAL "Clang"

OR "x${CMAKE_SYCL_COMPILER_ID}" STREQUAL "xIntelLLVM")

if("x${CMAKE_SYCL_SIMULATE_ID}" STREQUAL "xMSVC")

set(CMAKE_SYCL_COMPILER_FRONTEND_VARIANT "MSVC")

else()

set(CMAKE_SYCL_COMPILER_FRONTEND_VARIANT "GNU")

endif()

else()

set(CMAKE_SYCL_COMPILER_FRONTEND_VARIANT "")

endif()

endif()

endif()

if (NOT _CMAKE_TOOLCHAIN_LOCATION)

get_filename_component(_CMAKE_TOOLCHAIN_LOCATION "${CMAKE_SYCL_COMPILER}" PATH)

endif ()

# if we have a g++ cross compiler, they have usually some prefix, like

# e.g. powerpc-linux-g++, arm-elf-g++ or i586-mingw32msvc-g++ , optionally

# with a 3-component version number at the end (e.g. arm-eabi-gcc-4.5.2).

# The other tools of the toolchain usually have the same prefix

# NAME_WE cannot be used since then this test will fail for names like

# "arm-unknown-nto-qnx6.3.0-gcc.exe", where BASENAME would be

# "arm-unknown-nto-qnx6" instead of the correct "arm-unknown-nto-qnx6.3.0-"

if (NOT _CMAKE_TOOLCHAIN_PREFIX)

if("${CMAKE_SYCL_COMPILER_ID}" MATCHES "GNU|Clang|QCC|LCC")

get_filename_component(COMPILER_BASENAME "${CMAKE_SYCL_COMPILER}" NAME)

if (COMPILER_BASENAME MATCHES "^(.+-)?(clang\\+\\+|[gc]\\+\\+|clang-cl)(-[0-9]+(\\.[0-9]+)*)?(-[^.]+)?(\\.exe)?$")

set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})

set(_CMAKE_TOOLCHAIN_SUFFIX ${CMAKE_MATCH_3})

set(_CMAKE_COMPILER_SUFFIX ${CMAKE_MATCH_5})

elseif("${CMAKE_SYCL_COMPILER_ID}" MATCHES "Clang")

if(CMAKE_SYCL_COMPILER_TARGET)

set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_SYCL_COMPILER_TARGET}-)

endif()

elseif(COMPILER_BASENAME MATCHES "QCC(\\.exe)?$")

if(CMAKE_SYCL_COMPILER_TARGET MATCHES "gcc_nto([a-z0-9]+_[0-9]+|[^_le]+)(le)")

set(_CMAKE_TOOLCHAIN_PREFIX nto${CMAKE_MATCH_1}-)

endif()

endif ()

# if "llvm-" is part of the prefix, remove it, since llvm doesn't have its own binutils

# but uses the regular ar, objcopy, etc. (instead of llvm-objcopy etc.)

if ("${_CMAKE_TOOLCHAIN_PREFIX}" MATCHES "(.+-)?llvm-$")

set(_CMAKE_TOOLCHAIN_PREFIX ${CMAKE_MATCH_1})

endif ()

elseif("${CMAKE_SYCL_COMPILER_ID}" MATCHES "TI")

# TI compilers are named e.g. cl6x, cl470 or armcl.exe

get_filename_component(COMPILER_BASENAME "${CMAKE_SYCL_COMPILER}" NAME)

if (COMPILER_BASENAME MATCHES "^(.+)?cl([^.]+)?(\\.exe)?$")

set(_CMAKE_TOOLCHAIN_PREFIX "${CMAKE_MATCH_1}")

set(_CMAKE_TOOLCHAIN_SUFFIX "${CMAKE_MATCH_2}")

endif ()

endif()

endif ()

set(_CMAKE_PROCESSING_LANGUAGE "SYCL")

include(CMakeFindBinUtils)

include(Compiler/${CMAKE_SYCL_COMPILER_ID}-FindBinUtils OPTIONAL)

unset(_CMAKE_PROCESSING_LANGUAGE)

if(CMAKE_SYCL_COMPILER_SYSROOT)

string(CONCAT _SET_CMAKE_SYCL_COMPILER_SYSROOT

"set(CMAKE_SYCL_COMPILER_SYSROOT \"${CMAKE_SYCL_COMPILER_SYSROOT}\")\n"

"set(CMAKE_COMPILER_SYSROOT \"${CMAKE_SYCL_COMPILER_SYSROOT}\")")

else()

set(_SET_CMAKE_SYCL_COMPILER_SYSROOT "")

endif()

if(CMAKE_SYCL_COMPILER_ARCHITECTURE_ID)

set(_SET_CMAKE_SYCL_COMPILER_ARCHITECTURE_ID

"set(CMAKE_SYCL_COMPILER_ARCHITECTURE_ID ${CMAKE_SYCL_COMPILER_ARCHITECTURE_ID})")

else()

set(_SET_CMAKE_SYCL_COMPILER_ARCHITECTURE_ID "")

endif()

if(MSVC_SYCL_ARCHITECTURE_ID)

set(SET_MSVC_SYCL_ARCHITECTURE_ID

"set(MSVC_SYCL_ARCHITECTURE_ID ${MSVC_SYCL_ARCHITECTURE_ID})")

endif()

if(CMAKE_SYCL_XCODE_ARCHS)

set(SET_CMAKE_XCODE_ARCHS

"set(CMAKE_XCODE_ARCHS \"${CMAKE_SYCL_XCODE_ARCHS}\")")

endif()

# configure all variables set in this file

configure_file(${ArrayFire_SOURCE_DIR}/CMakeModules/CMakeSYCLCompiler.cmake.in

${CMAKE_PLATFORM_INFO_DIR}/CMakeSYCLCompiler.cmake

@ONLY

)

set(CMAKE_SYCL_COMPILER_ENV_VAR "SYCL")