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unified_retro_keyboard
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unified_retro_keyboard/firmware/asdf/cmake/generic-gcc-avr.cmake

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CMake
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##########################################################################
# "THE ANY BEVERAGE-WARE LICENSE" (Revision 42 - based on beer-ware
# license):
# <dev@layer128.net> wrote this file. As long as you retain this notice
# you can do whatever you want with this stuff. If we meet some day, and
# you think this stuff is worth it, you can buy me a be(ve)er(age) in
# return. (I don't like beer much.)
#
# Matthias Kleemann
##########################################################################
##########################################################################
# The toolchain requires some variables set.
#
# AVR_MCU (default: atmega8)
# the type of AVR the application is built for
# AVR_L_FUSE (NO DEFAULT)
# the LOW fuse value for the MCU used
# AVR_H_FUSE (NO DEFAULT)
# the HIGH fuse value for the MCU used
# AVR_UPLOADTOOL (default: avrdude)
# the application used to upload to the MCU
# NOTE: The toolchain is currently quite specific about
# the commands used, so it needs tweaking.
# AVR_UPLOADTOOL_PORT (default: usb)
# the port used for the upload tool, e.g. usb
# AVR_PROGRAMMER (default: avrispmkII)
# the programmer hardware used, e.g. avrispmkII
##########################################################################
##########################################################################
# options
##########################################################################
#option(WITH_MCU "Add the mCU type to the target file name." OFF)
##########################################################################
# executables in use
##########################################################################
find_program(AVR_CC avr-gcc)
find_program(AVR_CXX avr-g++)
find_program(AVR_OBJCOPY avr-objcopy)
find_program(AVR_SIZE_TOOL avr-size)
find_program(AVR_OBJDUMP avr-objdump)
##########################################################################
# toolchain starts with defining mandatory variables
##########################################################################
set(CMAKE_SYSTEM_NAME Generic)
set(CMAKE_SYSTEM_PROCESSOR avr)
set(CMAKE_C_COMPILER ${AVR_CC})
set(CMAKE_CXX_COMPILER ${AVR_CXX})
#Flags used by the C compiler during DEBUG builds.
set(CMAKE_C_FLAGS_DEBUG "-O0 -g")
#Flags used by the C compiler during MINSIZEREL builds.
set(CMAKE_C_FLAGS_MINSIZEREL "-Os -DNDEBUG")
#Flags used by the C compiler during RELEASE builds.
set(CMAKE_C_FLAGS_RELEASE "-O1 -DNDEBUG")
#Flags used by the C compiler during RELWITHDEBINFO builds.
set(CMAKE_C_FLAGS_RELWITHDEBINFO "-O1 -g -DNDEBUG")
##########################################################################
# c_toolchain_flags
# - Adds a list of compiler-specific flags to the CFLAGS variable in the
# parent scope.
##########################################################################
function(c_toolchain_flags)
# fix array base indexing beginning in AVR-GCC 12:
list(APPEND TOOLCHAIN_FLAGS
-std=c99
# -Wa,-adhln
-Wall
-funsigned-char
-funsigned-bitfields
-ffunction-sections
-fdata-sections
-fpack-struct
-fshort-enums
-Wall
-Wextra
-Wpointer-arith
-Wcast-align
-Wwrite-strings
-Wswitch-default
-Wunreachable-code
-Winit-self
-Wmissing-field-initializers
-Wno-unknown-pragmas
-Wstrict-prototypes
-Wundef
-Wold-style-definition
)
if(CMAKE_C_COMPILER_VERSION GREATER_EQUAL "11.3")
message(STATUS "Appending page size fix for GCC >= 11.3")
list(APPEND TOOLCHAIN_FLAGS --param=min-pagesize=0)
endif()
set(CFLAGS ${TOOLCHAIN_FLAGS} PARENT_SCOPE)
endfunction(c_toolchain_flags)
##########################################################################
# Macros for setting optimization flag:
# - optimization_off: turn off optimization for RTOS
# - optimization_full: set optimization to desired level for app.
##########################################################################
macro(optimization_off)
set(CMAKE_CFLAGS_RELEASE "-O0" "-NDEBUG")
set(CMAKE_CFLAGS "-O0" "-NDEBUG")
endmacro(optimization_off)
macro(optimization_full)
set(CMAKE_CFLAGS_RELEASE "-O1" "-NDEBUG")
set(CMAKE_CFLAGS "-O1" "-NDEBUG")
endmacro(optimization_full)
##########################################################################
# Identification
##########################################################################
set(AVR 1)
##########################################################################
# some necessary tools and variables for AVR builds, which may not
# defined yet
# - AVR_UPLOADTOOL
# - AVR_UPLOADTOOL_PORT
# - AVR_PROGRAMMER
# - AVR_MCU
# - AVR_SIZE_ARGS
##########################################################################
# default upload tool
if(NOT AVR_UPLOADTOOL)
set(
AVR_UPLOADTOOL avrdude
CACHE STRING "Set default upload tool: avrdude"
)
find_program(AVR_UPLOADTOOL avrdude)
endif(NOT AVR_UPLOADTOOL)
# default upload tool port
if(NOT AVR_UPLOADTOOL_PORT)
set(
AVR_UPLOADTOOL_PORT usb
CACHE STRING "Set default upload tool port: usb"
)
endif(NOT AVR_UPLOADTOOL_PORT)
# default programmer (hardware)
if(NOT AVR_PROGRAMMER)
set(
AVR_PROGRAMMER avrispmkII
CACHE STRING "Set default programmer hardware model: avrispmkII"
)
endif(NOT AVR_PROGRAMMER)
# default MCU (chip)
if(NOT AVR_MCU)
set(
AVR_MCU atmega8
CACHE STRING "Set default MCU: atmega8 (see 'avr-gcc --target-help' for valid values)"
)
endif(NOT AVR_MCU)
#default avr-size args
if(NOT AVR_SIZE_ARGS)
set(AVR_SIZE_ARGS -B)
endif(NOT AVR_SIZE_ARGS)
# prepare base flags for upload tool
set(AVR_UPLOADTOOL_BASE_OPTIONS -p ${AVR_MCU} -c ${AVR_PROGRAMMER})
# use AVR_UPLOADTOOL_BAUDRATE as baudrate for upload tool (if defined)
if(AVR_UPLOADTOOL_BAUDRATE)
set(AVR_UPLOADTOOL_BASE_OPTIONS ${AVR_UPLOADTOOL_BASE_OPTIONS} -b ${AVR_UPLOADTOOL_BAUDRATE})
endif()
##########################################################################
# check build types:
# - Debug
# - Release
# - RelWithDebInfo
#
# Release is chosen, because of some optimized functions in the
# AVR toolchain, e.g. _delay_ms().
##########################################################################
if(NOT ((CMAKE_BUILD_TYPE MATCHES Release) OR
(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo) OR
(CMAKE_BUILD_TYPE MATCHES Debug) OR
(CMAKE_BUILD_TYPE MATCHES MinSizeRel)))
set(
CMAKE_BUILD_TYPE Release
CACHE STRING "Choose cmake build type: Debug Release RelWithDebInfo MinSizeRel"
FORCE
)
endif(NOT ((CMAKE_BUILD_TYPE MATCHES Release) OR
(CMAKE_BUILD_TYPE MATCHES RelWithDebInfo) OR
(CMAKE_BUILD_TYPE MATCHES Debug) OR
(CMAKE_BUILD_TYPE MATCHES MinSizeRel)))
##########################################################################
##########################################################################
# target file name add-on
##########################################################################
if(WITH_MCU)
set(MCU_TYPE_FOR_FILENAME "-${AVR_MCU}")
else(WITH_MCU)
set(MCU_TYPE_FOR_FILENAME "")
endif(WITH_MCU)
##########################################################################
# add_avr_executable
# - IN_VAR: EXECUTABLE_NAME
#
# Creates targets and dependencies for AVR toolchain, building an
# executable. Calls add_executable with ELF file as target name, so
# any link dependencies need to be using that target, e.g. for
# target_link_libraries(<EXECUTABLE_NAME>-${AVR_MCU}.elf ...).
#
##########################################################################
function(add_avr_executable EXECUTABLE_NAME)
message(STATUS "target name: ${EXECUTABLE_NAME}")
if(NOT ARGN)
message(FATAL_ERROR "No source files given for ${EXECUTABLE_NAME}.")
endif(NOT ARGN)
# set file names
set(basename ${EXECUTABLE_NAME}${MCU_TYPE_FOR_FILENAME})
set(elf_file ${basename}.elf)
set(hex_file ${basename}.hex)
set(lst_file ${basename}.lst)
set(map_file ${basename}.map)
set(eeprom_image ${basename}-eeprom.hex)
message(STATUS "elf name: ${elf_file}")
message(STATUS "project target name: ${PROJECT_TARGET_NAME}")
set(sphinx_file ${CMAKE_CURRENT_BINARY_DIR}/toc_${PROJECT_TARGET_NAME}.rst)
configure_file(${DOC_DIR}/source/_templates/hexfile_link.in ${sphinx_file})
message(STATUS "sphinx file: ${sphinx_file}")
install(FILES ${sphinx_file} DESTINATION docs/source)
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${basename}.hex DESTINATION dist)
# elf file
add_executable(${elf_file} EXCLUDE_FROM_ALL ${ARGN})
set_target_properties(
${elf_file}
PROPERTIES
COMPILE_FLAGS "-mmcu=${AVR_MCU}"
LINK_FLAGS "-mmcu=${AVR_MCU} -Wl,--gc-sections -mrelax -Wl,-Map,${map_file}"
)
add_custom_command(
OUTPUT ${hex_file}
COMMAND
${AVR_OBJCOPY} -j .text -j .data -O ihex ${elf_file} ${hex_file}
COMMAND
${AVR_SIZE_TOOL} ${AVR_SIZE_ARGS} ${elf_file}
DEPENDS ${elf_file}
)
add_custom_command(
OUTPUT ${lst_file}
COMMAND
${AVR_OBJDUMP} -d ${elf_file} > ${lst_file}
DEPENDS ${elf_file}
)
# eeprom
add_custom_command(
OUTPUT ${eeprom_image}
COMMAND
${AVR_OBJCOPY} -j .eeprom --set-section-flags=.eeprom=alloc,load
--change-section-lma .eeprom=0 --no-change-warnings
-O ihex ${elf_file} ${eeprom_image}
DEPENDS ${elf_file}
)
add_custom_target(
${EXECUTABLE_NAME}
ALL
DEPENDS ${hex_file} ${lst_file} ${eeprom_image}
)
set_target_properties(
${EXECUTABLE_NAME}
PROPERTIES
OUTPUT_NAME "${elf_file}"
)
# clean
get_directory_property(clean_files ADDITIONAL_MAKE_CLEAN_FILES)
set_directory_properties(
PROPERTIES
ADDITIONAL_MAKE_CLEAN_FILES "${map_file}"
)
# upload - with avrdude
add_custom_target(
upload_${EXECUTABLE_NAME}
${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} ${AVR_UPLOADTOOL_OPTIONS}
-U flash:w:${hex_file}
-P ${AVR_UPLOADTOOL_PORT}
DEPENDS ${hex_file}
COMMENT "Uploading ${hex_file} to ${AVR_MCU} using ${AVR_PROGRAMMER}"
)
# upload eeprom only - with avrdude
# see also bug http://savannah.nongnu.org/bugs/?40142
add_custom_target(
upload_${EXECUTABLE_NAME}_eeprom
${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} ${AVR_UPLOADTOOL_OPTIONS}
-U eeprom:w:${eeprom_image}
-P ${AVR_UPLOADTOOL_PORT}
DEPENDS ${eeprom_image}
COMMENT "Uploading ${eeprom_image} to ${AVR_MCU} using ${AVR_PROGRAMMER}"
)
# disassemble
add_custom_target(
disassemble_${EXECUTABLE_NAME}
${AVR_OBJDUMP} -h -S ${elf_file} > ${EXECUTABLE_NAME}.lst
DEPENDS ${elf_file}
)
endfunction(add_avr_executable)
##########################################################################
# add_avr_library
# - IN_VAR: LIBRARY_NAME
#
# Calls add_library with an optionally concatenated name
# <LIBRARY_NAME>${MCU_TYPE_FOR_FILENAME}.
# This needs to be used for linking against the library, e.g. calling
# target_link_libraries(...).
##########################################################################
function(add_avr_library LIBRARY_NAME)
if(NOT ARGN)
message(FATAL_ERROR "No source files given for ${LIBRARY_NAME}.")
endif(NOT ARGN)
set(lib_file ${LIBRARY_NAME}${MCU_TYPE_FOR_FILENAME})
add_library(${lib_file} STATIC ${ARGN})
set_target_properties(
${lib_file}
PROPERTIES
COMPILE_FLAGS "-mmcu=${AVR_MCU}"
OUTPUT_NAME "${lib_file}"
)
if(NOT TARGET ${LIBRARY_NAME})
add_custom_target(
${LIBRARY_NAME}
ALL
DEPENDS ${lib_file}
)
set_target_properties(
${LIBRARY_NAME}
PROPERTIES
OUTPUT_NAME "${lib_file}"
)
endif(NOT TARGET ${LIBRARY_NAME})
endfunction(add_avr_library)
##########################################################################
# avr_target_link_libraries
# - IN_VAR: EXECUTABLE_TARGET
# - ARGN : targets and files to link to
#
# Calls target_link_libraries with AVR target names (concatenation,
# extensions and so on.
##########################################################################
function(avr_target_link_libraries EXECUTABLE_TARGET)
if(NOT ARGN)
message(FATAL_ERROR "Nothing to link to ${EXECUTABLE_TARGET}.")
endif(NOT ARGN)
get_target_property(TARGET_LIST ${EXECUTABLE_TARGET} OUTPUT_NAME)
foreach(TGT ${ARGN})
if(TARGET ${TGT})
get_target_property(ARG_NAME ${TGT} OUTPUT_NAME)
list(APPEND NON_TARGET_LIST ${ARG_NAME})
else(TARGET ${TGT})
list(APPEND NON_TARGET_LIST ${TGT})
endif(TARGET ${TGT})
endforeach(TGT ${ARGN})
target_link_libraries(${TARGET_LIST} ${NON_TARGET_LIST})
endfunction(avr_target_link_libraries EXECUTABLE_TARGET)
##########################################################################
# avr_target_include_directories
#
# Calls target_include_directories with AVR target names
##########################################################################
function(avr_target_include_directories EXECUTABLE_TARGET)
if(NOT ARGN)
message(FATAL_ERROR "No include directories to add to ${EXECUTABLE_TARGET}.")
endif()
get_target_property(TARGET_LIST ${EXECUTABLE_TARGET} OUTPUT_NAME)
set(extra_args ${ARGN})
target_include_directories(${TARGET_LIST} ${extra_args})
endfunction()
##########################################################################
# avr_target_compile_definitions
#
# Calls target_compile_definitions with AVR target names
##########################################################################
function(avr_target_compile_definitions EXECUTABLE_TARGET)
if(NOT ARGN)
message(FATAL_ERROR "No compile definitions to add to ${EXECUTABLE_TARGET}.")
endif()
get_target_property(TARGET_LIST ${EXECUTABLE_TARGET} OUTPUT_NAME)
set(extra_args ${ARGN})
target_compile_definitions(${TARGET_LIST} ${extra_args})
endfunction()
function(avr_generate_fixed_targets)
# get status
add_custom_target(
get_status
${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT} -n -v
COMMENT "Get status from ${AVR_MCU}"
)
# get fuses
add_custom_target(
get_fuses
${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT} -n
-U lfuse:r:-:b
-U hfuse:r:-:b
COMMENT "Get fuses from ${AVR_MCU}"
)
# set fuses
add_custom_target(
set_fuses
${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT}
-U lfuse:w:${AVR_L_FUSE}:m
-U hfuse:w:${AVR_H_FUSE}:m
COMMENT "Setup: High Fuse: ${AVR_H_FUSE} Low Fuse: ${AVR_L_FUSE}"
)
# get oscillator calibration
add_custom_target(
get_calibration
${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT}
-U calibration:r:${AVR_MCU}_calib.tmp:r
COMMENT "Write calibration status of internal oscillator to ${AVR_MCU}_calib.tmp."
)
# set oscillator calibration
add_custom_target(
set_calibration
${AVR_UPLOADTOOL} ${AVR_UPLOADTOOL_BASE_OPTIONS} -P ${AVR_UPLOADTOOL_PORT}
-U calibration:w:${AVR_MCU}_calib.hex
COMMENT "Program calibration status of internal oscillator from ${AVR_MCU}_calib.hex."
)
endfunction()
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