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cmake_minimum_required(VERSION 3.10)
set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
if (NOT DEFINED PATTERN)
set(PATTERN "CandyCane")
endif()
if (NOT DEFINED LED_BYTE_ORDER)
set(LED_BYTE_ORDER "GRB")
endif()
set(PATTERN ${PATTERN} CACHE STRING "Define the default pattern to use.")
set(LED_BYTE_ORDER ${LED_BYTE_ORDER} CACHE STRING "The byte order to use. This should either be RGB or GRB")
set(TC_PREFIX riscv32-picolibc-elf-)
# Set compiler and tools
set(CMAKE_C_COMPILER "${TC_PREFIX}gcc" CACHE INTERNAL "C Compiler")
find_program(CMAKE_OBJCOPY "${TC_PREFIX}objcopy")
if (CMAKE_OBJCOPY)
message(STATUS "Found objcopy at ${CMAKE_OBJCOPY}")
else()
message(FATAL_ERROR "Could not find ${TC_PREFIX}objcopy.")
endif()
find_program(CMAKE_OBJDUMP "${TC_PREFIX}objdump")
if (CMAKE_OBJDUMP)
message(STATUS "Found objdump at ${CMAKE_OBJDUMP}")
else()
message(FATAL_ERROR "Could not find ${TC_PREFIX}objdump.")
endif()
set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
file(REAL_PATH "stubs/libgloss_stub.c" LIBGLOSS_STUB)
add_compile_definitions(DEFAULT_PATTERN=${PATTERN})
add_compile_definitions(LED_BYTE_ORDER=${LED_BYTE_ORDER})
# Configure for Bare Metal.
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR riscv32)
include(cmake/fiddle.cmake)
project (ch537 LANGUAGES C ASM)
# Set compiler and linker flags
file(GLOB LINKER_SCRIPT "linker/*.ld")
set(CMAKE_C_FLAGS "-march=rv32imac_zicsr -mabi=ilp32 -lgcc -static -Os -std=gnu99" CACHE INTERNAL "C Compiler options")
set(CMAKE_ASM_FLAGS "-march=rv32imac_zicsr -mabi=ilp32 -lgcc -static -Os -std=gnu99" CACHE INTERNAL "C Compiler options")
set(CMAKE_EXE_LINKER_FLAGS "-static -L ${CMAKE_BINARY_DIR}/lib -lmain -T ${LINKER_SCRIPT}" CACHE INTERNAL "Linker options")
include_directories(include linker ${CMAKE_BINARY_DIR}/generated/fdl)
file(GLOB_RECURSE SOURCES "src/*.c" "src/*.s")
message("Sources ${SOURCES}")
file(REAL_PATH "ch-flash/" CH_FLASH_DIR)
add_library(libmain STATIC ${SOURCES})
set_target_properties(libmain PROPERTIES
ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib
OUTPUT_NAME main
)
add_library(libgloss_stub STATIC ${LIBGLOSS_STUB})
set_target_properties(libgloss_stub PROPERTIES
ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/lib
OUTPUT_NAME gloss
)
add_dependencies(libmain fdl_headers)
set(fdl_headers)
file(GLOB_RECURSE fdl_files "${CMAKE_SOURCE_DIR}/fdl/*.fdl")
fiddle_sources(fdl_headers "${fdl_files}")
add_custom_target(fdl_headers DEPENDS ${fdl_headers})
add_custom_command(
OUTPUT ${CMAKE_BINARY_DIR}/main.elf
DEPENDS libmain libgloss_stub
COMMENT "Link main.elf"
COMMAND ${CMAKE_C_COMPILER} -nostartfiles -lgcc
-static -L ${CMAKE_BINARY_DIR}/lib -T ${LINKER_SCRIPT}
-o ${CMAKE_BINARY_DIR}/main.elf
-Xlinker -Map=${CMAKE_BINARY_DIR}/main.map
-Wl,--no-whole-archive
-Wl,--whole-archive ${CMAKE_BINARY_DIR}/lib/libmain.a
-Wl,--no-whole-archive
)
# Generates the binary with objcopy.
add_custom_command(
OUTPUT main.bin
DEPENDS ${CMAKE_BINARY_DIR}/main.elf
COMMENT "objcopy -O binary main.elf main.bin"
COMMAND ${CMAKE_OBJCOPY} -O binary main.elf main.bin
)
add_custom_command(
OUTPUT objdump.txt
DEPENDS main.elf
COMMAND ${CMAKE_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_DIR}/ch-flash
COMMAND ${CH_FLASH_DIR}/ch-flash -f main.bin
)
# Uncomment to add debugging support
# add_custom_target(
# debug
# COMMAND "${TC_PREFIX}gdb" -tui -ex "tar ext :3333" -ex "file main.elf"
# )
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