cmake/toolchains/clang.cmake

# Copyright (c) 2021-2022 Amlogic, Inc. All rights reserved.

# SPDX-License-Identifier: MIT

include("${CMAKE_CURRENT_LIST_DIR}/find_compiler.cmake")

set(CMAKE_SYSTEM_NAME Generic)

# Find GCC for ARM.
aml_find_compiler(UNSC_COMPILER_CC clang)
aml_find_compiler(UNSC_COMPILER_CXX clang++)
set(UNSC_COMPILER_ASM "${UNSC_COMPILER_CC}" CACHE INTERNAL "")
aml_find_compiler(UNSC_COMPILER_OBJCOPY llvm-objcopy)
aml_find_compiler(UNSC_COMPILER_OBJDUMP llvm-objdump)


message(STATUS "@@@UNSC_COMPILER_CC ${UNSC_COMPILER_CC}")
message(STATUS "@@@UNSC_COMPILER_CXX ${UNSC_COMPILER_CXX}")
message(STATUS "@@@UNSC_COMPILER_OBJCOPY ${UNSC_COMPILER_OBJCOPY}")
message(STATUS "@@@UNSC_COMPILER_OBJDUMP ${UNSC_COMPILER_OBJDUMP}")

# Specify the cross compiler.
set(CMAKE_C_COMPILER ${UNSC_COMPILER_CC} CACHE FILEPATH "C compiler")
set(CMAKE_CXX_COMPILER ${UNSC_COMPILER_CXX} CACHE FILEPATH "C++ compiler")
set(CMAKE_ASM_COMPILER ${UNSC_COMPILER_ASM} CACHE FILEPATH "ASM compiler")
set(CMAKE_OBJCOPY_COMPILER ${UNSC_COMPILER_OBJCOPY} CACHE FILEPATH "objcopy compiler")
set(CMAKE_OBJDUMP_COMPILER ${UNSC_COMPILER_OBJDUMP} CACHE FILEPATH "objdump compiler")

# Disable compiler checks.
set(CMAKE_C_COMPILER_FORCED TRUE)
set(CMAKE_CXX_COMPILER_FORCED TRUE)

# Add target system root to cmake find path.
get_filename_component(UNSC_COMPILER_DIR "${UNSC_COMPILER_CC}" DIRECTORY)
get_filename_component(CMAKE_FIND_ROOT_PATH "${UNSC_COMPILER_DIR}" DIRECTORY)

# Look for includes and libraries only in the target system prefix.
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)

# Helper variables to abstracts some common compiler flags.
set(UNSC_COMPILER_NO_WARNINGS "-w" CACHE INTERNAL "")