cmake_minimum_required(VERSION 3.0)

project(UART_DEMO)

enable_language(C ASM)

set(CMAKE_VERBOSE_MAKEFILE ON)
set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS)

set(CMAKE_SYSTEM_NAME      Generic)
set(CMAKE_C_COMPILER       riscv32-elf-gcc)
set(CMAKE_CXX_COMPILER     riscv32-elf-g++)
set(CMAKE_ASM_COMPILER     riscv32-elf-gcc)

set(OBJCOPY                riscv32-elf-objcopy)
set(OBJDUMP                riscv32-elf-objdump)
set(NM                     riscv32-elf-nm)
set(READELF                riscv32-elf-readelf)
set(SIZE                   riscv32-elf-size)

add_definitions(-DMCU_STARTUP_FLASH_B91=1)

add_compile_options(-O2 -g3 -mcpu=d25f -mext-dsp -mabi=ilp32f -std=c99)
add_compile_options(-ffunction-sections -fdata-sections -fpack-struct -fshort-enums -flto)
add_compile_options(-fmessage-length=0 -fomit-frame-pointer -fno-strict-aliasing -fshort-wchar -fuse-ld=bfd)
add_compile_options(-Wall -Wno-nonnull-compare -Wextra -Wshadow -Werror -Wno-gnu-zero-variadic-macro-arguments)

set(CMAKE_EXE_LINKER_FLAGS "-O2 -nostartfiles -static -T\"${CMAKE_CURRENT_LIST_DIR}/link/flash_boot.link\" -Wl,--gc-sections")

link_libraries(-lB91)

aux_source_directory(${CMAKE_CURRENT_LIST_DIR}/common             SRCS_COMMON)
aux_source_directory(${CMAKE_CURRENT_LIST_DIR}/drivers/B91        SRCS_DRIVERS_B91)
aux_source_directory(${CMAKE_CURRENT_LIST_DIR}/vendor/common      SRCS_VENDOR_COMMON)
aux_source_directory(${CMAKE_CURRENT_LIST_DIR}/vendor/UART_DEMO   SRCS_VENDOR_UART_DEMO)

set(SRCS
    ${SRCS_COMMON}
    ${SRCS_DRIVERS_B91}
    ${SRCS_VENDOR_COMMON}
    ${SRCS_VENDOR_UART_DEMO}
    ${CMAKE_CURRENT_LIST_DIR}/boot/B91/cstartup_b91_flash.S)

include_directories(${CMAKE_CURRENT_LIST_DIR})
include_directories(${CMAKE_CURRENT_LIST_DIR}/vendor/common)
include_directories(${CMAKE_CURRENT_LIST_DIR}/drivers/B91)
include_directories(${CMAKE_CURRENT_LIST_DIR}/common)

link_directories(${CMAKE_CURRENT_LIST_DIR}/drivers/B91)

add_executable(${PROJECT_NAME}.elf ${SRCS})

add_custom_target(BIN ALL
    COMMAND ${OBJCOPY} -S -O binary ${PROJECT_NAME}.elf ${PROJECT_NAME}.bin
    COMMAND ${SIZE} ${PROJECT_NAME}.elf
    COMMAND ${OBJDUMP} -x -d -C  ${PROJECT_NAME}.elf > objdump.txt
    COMMAND ${NM} -n -l -C ${PROJECT_NAME}.elf > symbol.txt
    COMMAND ${READELF} -a ${PROJECT_NAME}.elf  > readelf.txt
    DEPENDS ${PROJECT_NAME}.elf
)