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#=========================== begin_copyright_notice ============================
#
# Copyright (C) 2021 Intel Corporation
#
# SPDX-License-Identifier: MIT
#
#============================ end_copyright_notice =============================
# This code is responsible for applying patches to LLVM of specified version.
include_guard(DIRECTORY)
set(IGC_LLVM_SOURCE_DIR ${IGC_LLVM_WORKSPACE_SRC}/llvm)
set(PATCH_DISABLE "None")
# Already copied and patched. Probably...
# TODO: handle dependencies on patches changes.
if(EXISTS "${IGC_LLVM_SOURCE_DIR}")
return()
endif()
# Copy stock LLVM sources to IGC_LLVM_SOURCE_DIR to apply patches.
message(STATUS "[LLVM] : Copying stock LLVM sources ${IGC_OPTION__LLVM_SOURCES_DIR} to ${IGC_LLVM_SOURCE_DIR}")
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory ${IGC_OPTION__LLVM_SOURCES_DIR}/.git ${IGC_LLVM_WORKSPACE_SRC}/.git)
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory ${IGC_OPTION__LLVM_SOURCES_DIR}/llvm ${IGC_LLVM_SOURCE_DIR})
# In LLVM 14 a /cmake common utils dir was created in the project's root directory
# that's used by all llvm, clang & lld as relative import.
# It may be better to put this is another *.cmake file, however it's convenient here
# as it should always happen when we copy LLVM to out of it's original directory.
if(EXISTS ${IGC_OPTION__LLVM_SOURCES_DIR}/cmake)
message(STATUS "[LLVM] : Copying LLVM common CMake utils ${IGC_OPTION__LLVM_SOURCES_DIR}/cmake to ${IGC_LLVM_WORKSPACE_SRC}/cmake")
execute_process(COMMAND ${CMAKE_COMMAND} -E copy_directory ${IGC_OPTION__LLVM_SOURCES_DIR}/cmake ${IGC_LLVM_WORKSPACE_SRC}/cmake)
endif()
message(STATUS "[LLVM] : Applying patches for LLVM from version ${DIR_WITH_PATCHES}")
execute_process(COMMAND
${Python3_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/apply_patches.py
--llvm-version ${IGC_OPTION__LLVM_PREFERRED_VERSION}
--llvm-project-dir ${IGC_LLVM_WORKSPACE_SRC}
--patches-dir ${CMAKE_CURRENT_SOURCE_DIR}/releases
--patch-executable ${Patch_EXECUTABLE}
--patch-disable ${PATCH_DISABLE}
RESULT_VARIABLE PATCH_SCRIPT_RESULT
)
if(NOT PATCH_SCRIPT_RESULT EQUAL 0)
message(FATAL_ERROR "[LLVM] : Could not apply LLVM patches.")
endif()
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