forked from WCH-Templates/CH32V203
Logan G
95f0acc88c
The original march option was wrong (RV32E). According to WCH, the instruction set is RV32IMAC. Updating the GCC version broke a ton of things since it better complied with stack alignment requirements that RV32E had, which RV32I was not compatible with. Additionally, newer versions of the RISC-V ISA spec split off the Zicsr and Zifencei instruction from RV32I. GCC versions 12 and newer began using this spec, leading to missing opcode errors. Lastly, "--specs=nosys.specs" and "--specs=nano.specs" allegedly don't go together, and nano is apparently preferred. Also "-mcmodel=medany" is needed apparently. See https://gcc.gnu.org/onlinedocs/gcc/RISC-V-Options.html#index-mcmodel_003dmedany
39 lines
1.7 KiB
CMake
39 lines
1.7 KiB
CMake
cmake_minimum_required(VERSION 3.10)
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project(hello-world)
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# set(CMAKE_VERBOSE_MAKEFILE ON)
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set(CMAKE_C_COMPILER riscv-none-elf-gcc)
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set(CMAKE_CXX_COMPILER riscv-none-elf-gcc)
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set(CMAKE_OBJCOPY riscv-none-elf-objcopy)
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set(CMAKE_SIZE riscv-none-elf-size)
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set_property(SOURCE Startup/startup_ch32v20x_D6.S PROPERTY LANGUAGE C)
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set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
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set(CMAKE_CXX_STANDARD 17)
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set(CMAKE_CXX_STANDARD_REQUIRED True)
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include_directories(Debug)
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include_directories(Core)
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include_directories(User)
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include_directories(Peripheral/inc)
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add_definitions(-finline-functions-called-once -g)
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add_definitions(-Wall -Wextra -march=rv32imac_zicsr_zifencei -mabi=ilp32 -msmall-data-limit=0 -msave-restore -Os -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -fno-common -mcmodel=medany --specs=nano.specs)
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file(GLOB SOURCES "Debug/*.c" "Core/*.c" "User/*.c" "Peripheral/src/*.c" "Startup/*.S")
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add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}.hex
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WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
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COMMAND ${CMAKE_OBJCOPY}
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ARGS -O ihex ${CMAKE_PROJECT_NAME}.elf ${CMAKE_PROJECT_NAME}.hex)
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add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_PROJECT_NAME}.siz
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WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
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COMMAND ${CMAKE_SIZE}
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ARGS --format=berkeley ${CMAKE_PROJECT_NAME}.elf)
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add_executable(${CMAKE_PROJECT_NAME}.elf ${SOURCES})
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target_link_options(${CMAKE_PROJECT_NAME}.elf PRIVATE -T ${CMAKE_SOURCE_DIR}/Ld/Link.ld -Os -march=rv32imac_zicsr_zifencei -mabi=ilp32 -mstrict-align -nostartfiles -Xlinker -gc-sections -static --specs=nano.specs -mcmodel=medany)
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