# GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
# This file is part of GNSS-SDR.
#
# SPDX-FileCopyrightText: 2011-2020 C. Fernandez-Prades cfernandez(at)cttc.es
# SPDX-License-Identifier: BSD-3-Clause

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR aarch64)

if(MINGW OR CYGWIN OR WIN32)
    set(UTIL_SEARCH_CMD where)
elseif(UNIX OR APPLE)
    set(UTIL_SEARCH_CMD which)
endif()

set(TOOLCHAIN_PREFIX aarch64-linux-gnu-)

execute_process(
    COMMAND ${UTIL_SEARCH_CMD} ${TOOLCHAIN_PREFIX}gcc
    OUTPUT_VARIABLE BINUTILS_PATH
    OUTPUT_STRIP_TRAILING_WHITESPACE
)

get_filename_component(ARM_TOOLCHAIN_DIR ${BINUTILS_PATH} DIRECTORY)

# The following is not needed on debian
# Without that flag CMake is not able to pass test compilation check
#set(CMAKE_EXE_LINKER_FLAGS_INIT "--specs=nosys.specs")

set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}gcc)
set(CMAKE_ASM_COMPILER ${CMAKE_C_COMPILER})
set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}g++)

set(CMAKE_OBJCOPY ${ARM_TOOLCHAIN_DIR}/${TOOLCHAIN_PREFIX}objcopy CACHE INTERNAL "objcopy tool")
set(CMAKE_SIZE_UTIL ${ARM_TOOLCHAIN_DIR}/${TOOLCHAIN_PREFIX}size CACHE INTERNAL "size tool")

set(CMAKE_FIND_ROOT_PATH ${BINUTILS_PATH})

set(CMAKE_CROSSCOMPILING_EMULATOR "qemu-aarch64 -L /usr/aarch64-linux-gnu/")
