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cmake_minimum_required(VERSION 3.10)
project (ch537)
set (CMAKE_SYSTEM_NAME Generic) # Configure for Bare Metal.
set (CMAKE_SYSTEM_PROCESSOR riscv32)
set (TC_PREFIX riscv32-unknown-elf-)
# set (CMAKE_VERBOSE_MAKEFILE ON)
include_directories(include linker)
file (GLOB SOURCES "src/*.c")
file (GLOB LINKER_SCRIPT "linker/*.ld")
file (REAL_PATH "ch-flash/" CH_FLASH_DIR)
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
set(CMAKE_C_FLAGS "-march=rv32imac -mabi=ilp32 -lgcc -static -nostartfiles -O -std=gnu99" CACHE INTERNAL "C Compiler options")
set(CMAKE_EXE_LINKER_FLAGS "--cref -static -T ${LINKER_SCRIPT}" CACHE INTERNAL "Linker options")
set (CMAKE_C_COMPILER ${TC_PREFIX}gcc CACHE INTERNAL "C Compiler")
set (CMAKE_OBJCOPY ${TC_PREFIX}objcopy CACHE INTERNAL "Object Copier")
set (CMAKE_EXE_LINKER_FLAGS_RELEASE "" CACHE INTERNAL "Linker options for release build type")
set (CMAKE_C_LINK_EXECUTABLE "${TC_PREFIX}ld <LINK_FLAGS> <OBJECTS> -o <TARGET>")
add_executable(main.elf ${SOURCES})
set_target_properties(main.elf PROPERTIES
LINK_FLAGS "--nostdlib -e 0")
# Generates the binary with objcopy.
add_custom_command(
OUTPUT main.bin
DEPENDS main.elf
COMMENT "objcopy -O binary main.elf main.bin"
COMMAND ${CMAKE_OBJCOPY} ARGS -O binary main.elf main.bin
)
add_custom_command(
OUTPUT objdump.txt
DEPENDS main.elf
COMMAND ${TC_PREFIX}objdump -D main.elf > objdump.txt
)
add_custom_target(main_bin ALL DEPENDS main.bin objdump.txt)
# generates the flash binary
add_custom_command(
OUTPUT ${CH_FLASH_DIR}/ch-flash
COMMAND cd ${CH_FLASH_DIR} && make
)
add_custom_target(
flash
DEPENDS main.bin ch-flash/ch-flash
COMMAND ${CH_FLASH_DIR}/ch-flash -f main.bin
)
# add_custom_target(
# debug
# COMMAND "${TC_PREFIX}gdb" -tui -ex "tar ext :3333" -ex "file main.elf")
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