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|
#=========================== begin_copyright_notice ============================
#
# Copyright (C) 2021 Intel Corporation
#
# SPDX-License-Identifier: MIT
#
#============================ end_copyright_notice =============================
# Order of chosing way how to take opencl-clang
#1. CCLANG_FROM_SYSTEM - use installed on system opencl-clang toolchain
#2. CCLANG_BUILD_PREBUILDS - use prebuilt opencl-clang toolchain
# CCLANG_BUILD_PREBUILDS_DIR - set path to prebuilt cclang folder
#3. CCLANG_BUILD_INTREE_LLVM - use sources of opencl-clang toolchain
#
# If defined CCLANG_INSTALL_PREBUILDS_DIR, opencl-clang will be force
# installed from the given location. BiF compilation still follows
# scheme above
if(NOT DEFINED COMMON_CLANG_LIBRARY_NAME)
set(COMMON_CLANG_LIBRARY_NAME opencl-clang)
endif()
set(COMMON_CLANG_LIB_FULL_NAME "lib${COMMON_CLANG_LIBRARY_NAME}${CMAKE_SHARED_LIBRARY_SUFFIX}")
find_library(CCLANG_FROM_SYSTEM ${COMMON_CLANG_LIBRARY_NAME})
### Check if user manual setup some of flag
if(NOT CCLANG_BUILD_PREBUILDS)
set(CCLANG_BUILD_PREBUILDS FALSE)
else()
set(CCLANG_FROM_SYSTEM FALSE)
set(CCLANG_BUILD_INTREE_LLVM FALSE)
endif()
if(NOT CCLANG_BUILD_INTREE_LLVM)
set(CCLANG_BUILD_INTREE_LLVM FALSE)
else()
set(CCLANG_BUILD_PREBUILDS FALSE)
set(CCLANG_FROM_SYSTEM FALSE)
endif()
###
### Check by order first available way to link with opencl-clang
if(NOT CCLANG_FROM_SYSTEM)
if(NOT CCLANG_BUILD_PREBUILDS_DIR)
# Detect CPU architecture
igc_arch_get_cpu(cpuSuffix)
set(CCLANG_BUILD_PREBUILDS_DIR "${IGC_BUILD__GFX_DEV_SRC_DIR}/../../prebuild-opencl-clang/Release/${cpuSuffix}")
if(NOT EXISTS ${CCLANG_BUILD_PREBUILDS_DIR})
set(CCLANG_BUILD_PREBUILDS_DIR "${IGC_BUILD__GFX_DEV_SRC_DIR}/../prebuild-opencl-clang/Release/${cpuSuffix}")
endif()
endif()
set(CCLANG_BUILD_INTREE_LLVM_DIR ${LLVM_SOURCE_DIR}/projects/opencl-clang)
### Check if user by choosing some way of linking with opencl-clang provided required folders
if(${CCLANG_BUILD_PREBUILDS})
if(NOT EXISTS ${CCLANG_BUILD_PREBUILDS_DIR})
unset(CCLANG_BUILD_PREBUILDS_DIR)
set(CCLANG_BUILD_PREBUILDS_DIR "/opt/intel-cclang-static-${IGC_OPTION__LLVM_PREFERRED_VERSION}")
if(NOT EXISTS ${CCLANG_BUILD_PREBUILDS_DIR})
message(FATAL_ERROR "[IGC] : User setup to use prebuilt opencl-clang but not found folder : ${CCLANG_BUILD_PREBUILDS_DIR}")
set(CCLANG_BUILD_PREBUILDS FALSE)
endif()
endif()
elseif(${CCLANG_BUILD_INTREE_LLVM})
if(NOT EXISTS ${CCLANG_BUILD_INTREE_LLVM_DIR})
message(FATAL_ERROR "[IGC] : User setup to use sources of opencl-clang but not found folder : ${CCLANG_BUILD_INTREE_LLVM_DIR}")
set(CCLANG_BUILD_INTREE_LLVM FALSE)
endif()
###
### User didn't define nothing, then pick the method 2 or 3.
elseif(EXISTS ${CCLANG_BUILD_PREBUILDS_DIR})
set(CCLANG_BUILD_PREBUILDS TRUE)
elseif(EXISTS ${CCLANG_BUILD_INTREE_LLVM_DIR})
message(STATUS "[IGC] : opencl-clang will be taken from sources")
set(CCLANG_BUILD_INTREE_LLVM TRUE)
else()
message(FATAL_ERROR "[IGC] : Cannot find opencl-clang tool-chain, please provide sources or install it on system.")
endif()
###
endif()
###
#1. CCLANG_FROM_SYSTEM - use installed on system opencl-clang toolchain
if(CCLANG_FROM_SYSTEM)
message(STATUS "[IGC] : opencl-clang will be taken from system")
find_library(SYSTEM_COMMON_CLANG ${COMMON_CLANG_LIBRARY_NAME})
add_library(opencl-clang-lib SHARED IMPORTED GLOBAL)
if(DEFINED CCLANG_INSTALL_PREBUILDS_DIR)
set_property(TARGET opencl-clang-lib PROPERTY "IMPORTED_LOCATION" "${CCLANG_INSTALL_PREBUILDS_DIR}/${COMMON_CLANG_LIB_FULL_NAME}")
else()
set_property(TARGET opencl-clang-lib PROPERTY "IMPORTED_LOCATION" "${SYSTEM_COMMON_CLANG}")
endif()
find_program(CLANG_EXE clang-${LLVM_VERSION_MAJOR})
if(CLANG_EXE)
message(STATUS "[IGC] Found clang-${LLVM_VERSION_MAJOR} executable: ${CLANG_EXE}")
add_executable(clang-tool IMPORTED GLOBAL)
set_property(TARGET clang-tool PROPERTY "IMPORTED_LOCATION" "${CLANG_EXE}")
set(CL_OPTIONS "-finclude-default-header")
# Get parent dir of the location of CLANG_EXE
get_filename_component(CLANG_EXE_PARENT_DIR ${CLANG_EXE} DIRECTORY)
file(GLOB_RECURSE opencl-header ${CLANG_EXE_PARENT_DIR}/../*opencl-c.h)
if(opencl-header)
message(STATUS "[IGC] Found opencl-c.h: ${opencl-header}")
else(opencl-header)
message(FATAL_ERROR "[IGC] : Couldn't find opencl-c.h, please provide it.")
endif(opencl-header)
else(CLANG_EXE)
message(FATAL_ERROR "[IGC] : Couldn't find clang-${LLVM_VERSION_MAJOR} executable, please install it.")
endif(CLANG_EXE)
###
#2. CCLANG_BUILD_PREBUILDS - use prebuilt opencl-clang toolchain
elseif(${CCLANG_BUILD_PREBUILDS})
message(STATUS "[IGC] : opencl-clang will be taken from prebuilds")
# Find CLANG_TOOL recursively in CCLANG_BUILD_PREBUILDS_DIR
file(GLOB_RECURSE CLANG_TOOL_PATH ${CCLANG_BUILD_PREBUILDS_DIR}/*clang${CMAKE_EXECUTABLE_SUFFIX})
message(STATUS "[IGC] : Find CLANG_TOOL in : ${CLANG_TOOL_PATH}")
set(LLVM_PACKAGE_VERSION "${LLVM_VERSION_MAJOR}.${LLVM_VERSION_MINOR}.${LLVM_VERSION_PATCH}${LLVM_VERSION_SUFFIX}")
if(CMAKE_CROSSCOMPILING)
# In case of cross compilation we could not execute prebuilt opencl library,
# so we trust version number provided externally or assume it's the same as
# LLVM version
if(NOT DEFINED CLANG_TOOL_VERSION)
set(CLANG_TOOL_VERSION "${LLVM_PACKAGE_VERSION}")
endif()
else(CMAKE_CROSSCOMPILING)
# Get clang-tool version
execute_process(
COMMAND ${CLANG_TOOL_PATH} -v
ERROR_VARIABLE CLANG_TOOL_V_CALL)
string(REGEX MATCH "clang version ([0-9]*\\.[0-9]*\\.[0-9]*[a-zA-Z0-9]*)" CLANG_TOOL_VERSION "${CLANG_TOOL_V_CALL}")
set(CLANG_TOOL_VERSION "${CMAKE_MATCH_1}")
# Check if we parse clang tool version correctly
if(NOT CLANG_TOOL_VERSION)
message(FATAL_ERROR "[IGC] : Cannot read version of clang tool, please check the output of execution `clang -v` : ${CLANG_TOOL_V_CALL}")
endif()
endif(CMAKE_CROSSCOMPILING)
# Check if llvm version for IGC is newer or equal with the clang-tool version
if(${LLVM_PACKAGE_VERSION} VERSION_GREATER ${CLANG_TOOL_VERSION} OR
${LLVM_PACKAGE_VERSION} EQUAL ${CLANG_TOOL_VERSION})
add_library(opencl-clang-lib SHARED IMPORTED GLOBAL)
if(DEFINED CCLANG_INSTALL_PREBUILDS_DIR)
set_property(TARGET opencl-clang-lib PROPERTY "IMPORTED_LOCATION" "${CCLANG_INSTALL_PREBUILDS_DIR}/${COMMON_CLANG_LIB_FULL_NAME}")
else()
# Find opencl-clang-lib recursively in CCLANG_BUILD_PREBUILDS_DIR
file(GLOB_RECURSE OPENCL-CLANG_PATH ${CCLANG_BUILD_PREBUILDS_DIR}/*${COMMON_CLANG_LIB_FULL_NAME})
message(STATUS "[IGC] : Find opencl-clang-lib in : ${OPENCL-CLANG_PATH}")
set_property(TARGET opencl-clang-lib PROPERTY "IMPORTED_LOCATION" "${OPENCL-CLANG_PATH}")
endif()
add_executable(clang-tool IMPORTED GLOBAL)
set_property(TARGET clang-tool PROPERTY "IMPORTED_LOCATION" "${CLANG_TOOL_PATH}")
# Find opencl-header recursively in CCLANG_BUILD_PREBUILDS_DIR
file(GLOB_RECURSE opencl-header ${CCLANG_BUILD_PREBUILDS_DIR}/*opencl-c.h)
else()
message(FATAL_ERROR "[IGC] : The clang-tool(${CLANG_TOOL_VERSION}) from prebuilts is newer than llvm(${LLVM_PACKAGE_VERSION}) version for IGC.")
endif()
###
#3. CCLANG_BUILD_INTREE_LLVM - use sources of opencl-clang toolchain
elseif(${CCLANG_BUILD_INTREE_LLVM})
message(STATUS "[IGC] : opencl-clang will be taken from sources")
if(DEFINED CCLANG_INSTALL_PREBUILDS_DIR)
add_library(opencl-clang-lib SHARED IMPORTED GLOBAL)
set_property(TARGET opencl-clang-lib PROPERTY "IMPORTED_LOCATION" "${CCLANG_INSTALL_PREBUILDS_DIR}/${COMMON_CLANG_LIB_FULL_NAME}")
else()
add_library(opencl-clang-lib ALIAS ${COMMON_CLANG_LIBRARY_NAME})
endif()
add_executable(clang-tool ALIAS clang)
get_target_property(CLANG_SOURCE_DIR clang SOURCE_DIR)
set(opencl-header "${CLANG_SOURCE_DIR}/../../lib/Headers/opencl-c.h")
endif()
###
|
