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#=========================== begin_copyright_notice ============================
#
# Copyright (C) 2021 Intel Corporation
#
# SPDX-License-Identifier: MIT
#
#============================ end_copyright_notice =============================
# Source hook for clang. IGC will try to search for clang in
# find_opencl_clang script independenty of this file. All of these is
# required to handle intel opencl-clang project patching scheme.
# FIXME: this should be moved to opencl-clang repo.
include_guard(DIRECTORY)
llvm_define_mode_variable(Clang IGC_OPTION__CLANG_MODE)
# Reuse LLVM source search module. Clang should be located in the same place.
if(NOT DEFAULT_IGC_LLVM_SOURCES_DIR)
include(llvm_source_path)
endif()
if(DEFAULT_IGC_LLVM_SOURCES_DIR)
set(DEFAULT_IGC_CLANG_SOURCES_DIR ${DEFAULT_IGC_LLVM_SOURCES_DIR}/clang)
endif()
if(IGC_OPTION__CLANG_MODE STREQUAL SOURCE_MODE_NAME)
if (NOT DEFINED IGC_OPTION__CLANG_SOURCES_DIR)
set(IGC_OPTION__CLANG_SOURCES_DIR "${DEFAULT_IGC_CLANG_SOURCES_DIR}" CACHE PATH "Path to Clang sources")
endif()
endif()
# In Prebuild mode there is nothing to do here for now.
if(IGC_OPTION__CLANG_MODE STREQUAL PREBUILDS_MODE_NAME)
message(STATUS "[Clang] Will use Clang prebuilds")
return()
endif()
# No mode was specified, start searching.
if(NOT IGC_OPTION__CLANG_MODE)
message(STATUS "[Clang] No mode was specified, searching for Clang")
if(EXISTS "${DEFAULT_IGC_CLANG_SOURCES_DIR}")
set(IGC_OPTION__CLANG_SOURCES_DIR "${DEFAULT_IGC_CLANG_SOURCES_DIR}")
else()
message(STATUS "[Clang] No mode was specified and the default IGC Clang source dir not exist. Try take Clang from system")
set(IGC_TRY_TO_TAKE_CLANG_FROM_SYSTEM ON)
return()
endif()
endif()
set(IGC_COPIED_CLANG_DIR ${IGC_LLVM_WORKSPACE_SRC}/clang)
message(STATUS "[Clang] Clang will be built from sources")
message(STATUS "[Clang] Copying stock Clang sources ${IGC_OPTION__CLANG_SOURCES_DIR} to ${IGC_COPIED_CLANG_DIR}")
if(NOT EXISTS "${IGC_COPIED_CLANG_DIR}")
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory ${IGC_OPTION__CLANG_SOURCES_DIR} ${IGC_COPIED_CLANG_DIR})
endif()
# Just register clang as external llvm project.
register_llvm_external_project(clang ${IGC_COPIED_CLANG_DIR})
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