Finally! A CMake build script
- Mostly implements the features found in the old Makefile - More pretty colours - TODO list can be found at the top of the file - Doesn't have any compiler detection yet, that may be a good idea to add
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Jacob Alexander
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CMakeLists.txt
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199
CMakeLists.txt
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###| CMAKE Kiibohd Controller |###
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#
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# Written by Jacob Alexander in 2011 for the Kiibohd Controller
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# Due to this file's usefulness:
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#
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# Released into the Public Domain
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#
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###
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##| TODO List |##
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# - Add avr-gcc as requirement
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# - Add avr-objcopy as a requirement
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# - Generate .lst files
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# - Extend .lst to .lss
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# - Autoloader to Teensy
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# - specify on commandline which atmel mcu
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#| Set the Compilers
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include( CMakeForceCompiler )
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set( CMAKE_SYSTEM_NAME Generic )
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cmake_force_c_compiler ( avr-gcc AVRCCompiler )
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cmake_force_cxx_compiler( avr-g++ AVRCxxCompiler )
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#| Project
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project( kiibohd_controller )
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#| General Settings
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cmake_minimum_required( VERSION 2.8 )
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#| Sources
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set( SRCS
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./main.c
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./print.c
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./usb_keyboard_debug.c
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./scan_loop.c
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)
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#| Target Name
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set( TARGET kiibohd )
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#| Compiler flag to set the C Standard level.
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#| c89 = "ANSI" C
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#| gnu89 = c89 plus GCC extensions
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#| c99 = ISO C99 standard (not yet fully implemented)
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#| gnu99 = c99 plus GCC extensions
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set( CSTANDARD "-std=gnu99" )
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#| Warning Options
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#| -Wall...: warning level
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set( WARN "-Wall -Wstrict-prototypes" )
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#| Tuning Options
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#| -f...: tuning, see GCC manual and avr-libc documentation
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set( TUNING "-funsigned-char -funsigned-bitfields -ffunction-sections -fpack-struct -fshort-enums" )
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#| Optimization level, can be [0, 1, 2, 3, s].
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#| 0 = turn off optimization. s = optimize for size.
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#| (Note: 3 is not always the best optimization level. See avr-libc FAQ.)
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set( OPT "s" )
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#| Output Format
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#| srec, ihex, binary
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set( FORMAT "ihex" )
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#| MCU Name
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#| You MUST set this to match the board you are using
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#| type "make clean" after changing this, so all files will be rebuilt
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#|
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#| "at90usb162" # Teensy 1.0
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#| "atmega32u4" # Teensy 2.0
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#| "at90usb646" # Teensy++ 1.0
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#| "at90usb1286" # Teensy++ 2.0
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set( MCU "at90usb1286" )
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#| Processor frequency.
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#| Normally the first thing your program should do is set the clock prescaler,
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#| so your program will run at the correct speed. You should also set this
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#| variable to same clock speed. The _delay_ms() macro uses this, and many
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#| examples use this variable to calculate timings. Do not add a "UL" here.
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set( F_CPU "16000000" )
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set( CDEFS "-DF_CPU=${F_CPU}" )
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#| Dependency Files
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#| Compiler flags to generate dependency files.
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set( GENDEPFLAGS "-MMD -MP" )
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#| Listing file
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set( TARGET_LST ${TARGET}.lst )
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#| Compiler Flags
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add_definitions( "-mmcu=${MCU} -DF_CPU=${F_CPU} -O${OPT} ${TUNING} ${WARN} -Wa,-adhlns ${CSTANDARD} ${GENDEPFLAGS}" )
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#| Linker Flags
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set( LINKER_FLAGS "-mmcu=${MCU} -Wl,-Map=${TARGET}.map,--cref -Wl,--relax -Wl,--gc-sections" )
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#| Hex Flags (XXX, CMake seems to have issues if you quote the arguments for the custom commands...)
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set( HEX_FLAGS -O ${FORMAT} -R .eeprom -R .fuse -R .lock -R .signature )
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#| Eep Flags
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set( EEP_FLAGS -j .eeprom --set-section-flags=.eeprom="alloc,load" --change-section-lma .eeprom=0 --no-change-warnings -O ${FORMAT} )
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#| Lss Flags
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set( LSS_FLAGS -h -S -z )
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#| Create the .ELF file
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set( TARGET_ELF ${TARGET}.elf )
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add_executable( ${TARGET_ELF} ${SRCS} )
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#| .ELF Properties
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set_target_properties( ${TARGET_ELF} PROPERTIES
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LINK_FLAGS ${LINKER_FLAGS}
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)
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#| Convert the .ELF into a .HEX to load onto the Teensy
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set( TARGET_HEX ${TARGET}.hex )
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add_custom_command( TARGET ${TARGET_ELF} POST_BUILD
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COMMAND avr-objcopy ${HEX_FLAGS} ${TARGET_ELF} ${TARGET_HEX}
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COMMENT "Creating load file for Flash: ${TARGET_HEX}"
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)
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#| Convert the .ELF into a .EEP
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set( TARGET_EEP ${TARGET}.eep )
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add_custom_command( TARGET ${TARGET_ELF} POST_BUILD
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COMMAND avr-objcopy ${EEP_FLAGS} ${TARGET_ELF} ${TARGET_EEP}
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COMMENT "Creating load file for EEPROM: ${TARGET_EEP}"
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)
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#| Generate the Extended .LSS TODO Incomplete
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set( TARGET_LSS ${TARGET}.lss )
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add_custom_command( TARGET ${TARGET_ELF} POST_BUILD
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COMMAND avr-objcopy ${LSS_FLAGS} ${TARGET_ELF} > ${TARGET_LSS}
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COMMENT "Creating Extended Listing: ${TARGET_LSS}"
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)
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#| Generate the Symbol Table .SYM
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set( TARGET_SYM ${TARGET}.sym )
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add_custom_command( TARGET ${TARGET_ELF} POST_BUILD
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COMMAND avr-nm -n ${TARGET_ELF} > ${TARGET_SYM}
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COMMENT "Creating Symbol Table: ${TARGET_SYM}"
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)
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#| Before Changes Size Information (and make sure it is run before ${TARGET_ELF} is generated) TODO Only call if the files exist
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#add_dependencies( ${TARGET_ELF} SizeBefore )
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#add_custom_target( SizeBefore ALL avr-size --target=${FORMAT} ${TARGET_HEX} ${TARGET_ELF}
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# COMMENT "Size before generation:"
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#)
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#| After Changes Size Information
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add_custom_target( SizeAfter ALL avr-size --target=${FORMAT} ${TARGET_HEX} ${TARGET_ELF}
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DEPENDS ${TARGET_ELF}
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COMMENT "Size after generation:"
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)
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