INCLUDE(CMakeForceCompiler)

# TOOLCHAIN EXTENSION
IF(WIN32)
    SET(TOOLCHAIN_EXT ".exe")
ELSE()
    SET(TOOLCHAIN_EXT "")
ENDIF()

# EXECUTABLE EXTENSION
SET (CMAKE_EXECUTABLE_SUFFIX ".elf")

# TOOLCHAIN_DIR AND NANO LIBRARY
SET(TOOLCHAIN_DIR $ENV{XCC_DIR})
STRING(REGEX REPLACE "\\\\" "/" TOOLCHAIN_DIR "${TOOLCHAIN_DIR}")

IF(NOT TOOLCHAIN_DIR)
    MESSAGE(FATAL_ERROR "***Please set XCC_DIR in envionment variables***")
ENDIF()

MESSAGE(STATUS "TOOLCHAIN_DIR: " ${TOOLCHAIN_DIR})

SET(XTENSA_SYSTEM $ENV{XTENSA_SYSTEM})
IF(NOT XTENSA_SYSTEM)
    SET(XTENSA_SYSTEM "/opt/xtensa/builds/RI-2019.1-linux/nxp_rt600_RI2019_newlib/config")
ENDIF()
SET(XTENSA_CORE $ENV{XTENSA_CORE})
IF(NOT XTENSA_CORE)
    SET(XTENSA_CORE "nxp_rt600_RI2019_newlib")
ENDIF()

# TARGET_TRIPLET
SET(TARGET_TRIPLET "xt")

SET(TOOLCHAIN_BIN_DIR ${TOOLCHAIN_DIR}/bin)

SET(CMAKE_SYSTEM_NAME Generic)
SET(CMAKE_SYSTEM_PROCESSOR hifi4)

CMAKE_FORCE_C_COMPILER(${TOOLCHAIN_BIN_DIR}/${TARGET_TRIPLET}-clang${TOOLCHAIN_EXT} GNU)
CMAKE_FORCE_CXX_COMPILER(${TOOLCHAIN_BIN_DIR}/${TARGET_TRIPLET}-clang++${TOOLCHAIN_EXT} GNU)
SET(CMAKE_ASM_COMPILER ${TOOLCHAIN_BIN_DIR}/${TARGET_TRIPLET}-clang${TOOLCHAIN_EXT})

SET(CMAKE_OBJCOPY ${TOOLCHAIN_BIN_DIR}/${TARGET_TRIPLET}-objcopy CACHE INTERNAL "objcopy tool")
SET(CMAKE_OBJDUMP ${TOOLCHAIN_BIN_DIR}/${TARGET_TRIPLET}-objdump CACHE INTERNAL "objdump tool")

SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -O0 -g" CACHE INTERNAL "c compiler flags debug")
SET(CMAKE_CXX_FLAGS_DEBUG "${CMAKE_CXX_FLAGS_DEBUG} -O0 -g" CACHE INTERNAL "cxx compiler flags debug")
SET(CMAKE_ASM_FLAGS_DEBUG "${CMAKE_ASM_FLAGS_DEBUG} -g" CACHE INTERNAL "asm compiler flags debug")
SET(CMAKE_EXE_LINKER_FLAGS_DEBUG "${CMAKE_EXE_LINKER_FLAGS_DEBUG}" CACHE INTERNAL "linker flags debug")

SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O3 " CACHE INTERNAL "c compiler flags release")
SET(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O3 " CACHE INTERNAL "cxx compiler flags release")
SET(CMAKE_ASM_FLAGS_RELEASE "${CMAKE_ASM_FLAGS_RELEASE}" CACHE INTERNAL "asm compiler flags release")
SET(CMAKE_EXE_LINKER_FLAGS_RELEASE "${CMAKE_EXE_LINKER_FLAGS_RELEASE}" CACHE INTERNAL "linker flags release")

SET(CMAKE_FIND_ROOT_PATH ${TOOLCHAIN_DIR}/${TARGET_TRIPLET} ${EXTRA_FIND_PATH})
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

SET(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/${CMAKE_BUILD_TYPE})
SET(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/${CMAKE_BUILD_TYPE})

MESSAGE(STATUS "BUILD_TYPE: " ${CMAKE_BUILD_TYPE})