CMakeLists.txt

include(CMakeForceCompiler)
include(Bitmaps)

set(PCB_TYPES X7 X9D X9D+ X9E X10 X12S 9X 9XR 9X128 9XR128 9X2561 GRUVIN9X MEGA2560 SKY9X 9XRPRO AR9X)
set(GUI_LANGUAGES CZ DE EN ES FR IT PT SK SE PL HU NL)
set(TTS_LANGUAGES CZ DE EN ES FR IT PT SK SE PL HU RU)

set(PCB "X9D+" CACHE STRING "Radio type, one of: ${PCB_TYPES}")
set_property(CACHE PCB PROPERTY STRINGS ${PCB_TYPES})
set(TRANSLATIONS "EN" CACHE STRING "Radio language, one of: ${GUI_LANGUAGES}")
set_property(CACHE TRANSLATIONS PROPERTY STRINGS ${GUI_LANGUAGES})
set(SPLASH "DEFAULT" CACHE STRING "Splash (DEFAULT/OFF/FRSKY)")
set_property(CACHE SPLASH PROPERTY STRINGS DEFAULT OFF FRSKY)
set(PPM_UNIT "PERCENT_PREC1" CACHE STRING "PPM display unit (US/PERCENT_PREC1/PERCENT_PREC0)")
set_property(CACHE PPM_UNIT PROPERTY STRINGS US PERCENT_PREC1 PERCENT_PREC0)
set(DEFAULT_MODE "" CACHE STRING "Default sticks mode")
set(FONT "STD" CACHE STRING "Choose font : STD or SQT5")
set_property(CACHE FONT PROPERTY STRINGS SQT5)

option(HELI "Heli menu" ON)
option(FLIGHT_MODES "Flight Modes" ON)
option(CURVES "Curves" ON)
option(GVARS "Global variables" OFF)
option(GUI "GUI enabled" ON)
option(PPM_CENTER_ADJUSTABLE "PPM center adjustable" ON)
option(PPM_LIMITS_SYMETRICAL "PPM limits symetrical" OFF)
option(OVERRIDE_CHANNEL_FUNCTION "OverrideChannel function available" ON)
option(DANGEROUS_MODULE_FUNCTIONS "Dangerous module functions (RangeCheck / Bind / Module OFF, etc.) available" OFF)
option(FAI "Competition mode (no telemetry)" OFF)
option(AUTOSOURCE "Automatic source detection in menus" ON)
option(AUTOSWITCH "Automatic switch detection in menus" ON)
option(SEMIHOSTING "Enable debugger semihosting" OFF)
option(JITTER_MEASURE "Enable ADC jitter measurement" OFF)
option(WATCHDOG_DISABLED "Disable hardware Watchdog" OFF)
if(SDL_FOUND)
  option(SIMU_AUDIO "Enable simulator audio." ON)
endif()
option(SIMU_DISKIO "Enable disk IO simulation in simulator. Simulator will use FatFs module and simulated IO layer that  uses \"./sdcard.image\" file as image of SD card. This file must contain whole SD card from first to last sector" OFF)
option(SIMU_LUA_COMPILER "Pre-compile and save Lua scripts in simulator." ON)
option(FAS_PROTOTYPE "Support of old FAS prototypes (different resistors)" OFF)
option(TEMPLATES "Model templates menu" OFF)
option(TRACE_SIMPGMSPACE "Turn on traces in simpgmspace.cpp" ON)
option(TRACE_LUA_INTERNALS "Turn on traces for Lua internals" OFF)
option(FRSKY_STICKS "Reverse sticks for FrSky sticks" OFF)
option(NANO "Use nano newlib and binalloc")
option(NIGHTLY_BUILD_WARNING "Warn this is a nightly build" OFF)
option(USEHORUSBT "X9E BT module replaced by Horus BT module" OFF)

# since we reset all default CMAKE compiler flags for firmware builds, provide an alternate way for user to specify additional flags.
set(FIRMWARE_C_FLAGS "" CACHE STRING "Additional flags for firmware target c compiler (note: all CMAKE_C_FLAGS[_*] are ignored for firmware/bootloader).")
set(FIRMWARE_C_FLAGS_DEBUG "-g" CACHE STRING "Additional flags for firmware target (Debug config) c compiler (note: CMAKE_C_FLAGS_DEBUG is ignored for firmware/bootloader).")
set(FIRMWARE_CXX_FLAGS "" CACHE STRING "Additional flags for firmware target c++ compiler (note: all CMAKE_CXX_FLAGS[_*] are ignored for firmware/bootloader).")
set(FIRMWARE_CXX_FLAGS_DEBUG "-g" CACHE STRING "Additional flags for firmware target (Debug config) c++ compiler (note: CMAKE_CXX_FLAGS_DEBUG is ignored for firmware/bootloader).")

set(THIRDPARTY_DIR thirdparty)
set(LUA_DIR ${THIRDPARTY_DIR}/Lua/src)
set(COOS_DIR ${THIRDPARTY_DIR}/CoOS)
set(FATFS_DIR ${THIRDPARTY_DIR}/FatFs)
set(RADIO_BIN_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})

configure_file(stamp.h.in stamp.h @ONLY)

add_subdirectory(translations)
add_subdirectory(bitmaps)
add_subdirectory(fonts)

set(EEPROM_VARIANT  0)
set(GVARS_VARIANT   1)
set(FRSKY_VARIANT   2)
set(3POS_VARIANT    4)
set(MAVLINK_VARIANT 8)
set(M2561_VARIANT   16384)
set(M128_VARIANT    32768)

set(FIRMWARE_DEPENDENCIES firmware_translations)

set(FATFS_SRC
  ${FATFS_DIR}/ff.c
  ${FATFS_DIR}/fattime.c
  ${FATFS_DIR}/option/ccsbcs.c
)

if(PCB STREQUAL X12S OR PCB STREQUAL X10)
  include(targets/horus/CMakeLists.txt)
elseif(PCB STREQUAL X9E OR PCB STREQUAL X9D+ OR PCB STREQUAL X9D OR PCB STREQUAL X7)
  include(targets/taranis/CMakeLists.txt)
elseif(PCB STREQUAL SKY9X OR PCB STREQUAL 9XRPRO OR PCB STREQUAL AR9X)
  include(targets/sky9x/CMakeLists.txt)
elseif(PCB STREQUAL 9X OR PCB STREQUAL 9XR OR PCB STREQUAL 9X128 OR PCB STREQUAL 9XR128)
  include(targets/9x/CMakeLists.txt)
elseif(PCB STREQUAL 9X2561)
  set(ARCH AVR)
  set(MCU atmega2561)
  string(TOLOWER ${PCB} FLAVOUR)
  set(EEPROM EEPROM_RLC)
  set(SDCARD NO)
  add_definitions(-DEEPROM_VARIANT=${M2561_VARIANT})
  set(GUI_DIR 128x64)
  set(TARGET_DIR 9x)
  set(FIRMWARE_DEPENDENCIES ${FIRMWARE_DEPENDENCIES} 9x_bitmaps)
  add_definitions(-DPCBSTD -DPCB${PCB} -DCPUM2561)
  set(TARGET_SRC ${TARGET_SRC} board.cpp)
  set(GUI_SRC
    ${GUI_SRC}
    model_inputs_mixes.cpp
    radio_diagkeys.cpp
    radio_diaganas.cpp)
  if(SP22)
    add_definitions(-DSP22)
  endif()
  if(PWM_BACKLIGHT)
    add_definitions(-DPWM_BACKLIGHT)
  endif()
  set(FIRMWARE_TARGET_SRC ${FIRMWARE_TARGET_SRC} lcd_driver.cpp)
elseif(PCB STREQUAL GRUVIN9X)
  include(targets/gruvin9x/CMakeLists.txt)
elseif(PCB STREQUAL MEGA2560)
  include(targets/mega2560/CMakeLists.txt)
else()
  message(FATAL_ERROR "Unknown PCB '${PCB}'")
endif()

if(NOT PCB STREQUAL 9XR AND NOT PCB STREQUAL 9XRPRO)
  option(DBLKEYS "Double Keys" ON)
  if(DBLKEYS)
    add_definitions(-DDBLKEYS)
  endif()
endif()

if(CPU_TYPE STREQUAL STM32F4)
  include(targets/common/arm/stm32/f4/CMakeLists.txt)
endif()

if(CPU_TYPE STREQUAL STM32F2)
  include(targets/common/arm/stm32/f2/CMakeLists.txt)
endif()

if(CPU_FAMILY STREQUAL STM32)
  include(targets/common/arm/stm32/CMakeLists.txt)
endif()

if(ARCH STREQUAL ARM)
  include(targets/common/arm/CMakeLists.txt)
else()
  include(targets/common/avr/CMakeLists.txt)
endif()

include_directories(targets/${TARGET_DIR} ${THIRDPARTY_DIR})

foreach(LANGUAGE ${GUI_LANGUAGES})
  if(TRANSLATIONS STREQUAL ${LANGUAGE})
    add_definitions(-DTRANSLATIONS_${LANGUAGE} -DTRANSLATIONS="${LANGUAGE}")
  endif()
endforeach()

set(SRC ${SRC} debug.cpp)

if(${EEPROM} STREQUAL SDCARD)
  set(SRC ${SRC} storage/storage_common.cpp storage/sdcard_raw.cpp)
elseif(${EEPROM} STREQUAL EEPROM_RLC)
  set(SRC ${SRC} storage/storage_common.cpp storage/eeprom_common.cpp storage/eeprom_rlc.cpp)
  add_definitions(-DEEPROM -DEEPROM_RLC)
else()
  set(SRC ${SRC} storage/storage_common.cpp storage/eeprom_common.cpp storage/eeprom_raw.cpp)
  add_definitions(-DEEPROM -DEEPROM_RAW)
endif()

if(ARCH STREQUAL ARM AND NOT PCB STREQUAL X12S AND NOT PCB STREQUAL X10)
  set(SRC ${SRC} storage/eeprom_conversions.cpp)
endif()

add_definitions(-DFLAVOUR="${FLAVOUR}")

include_directories(${CMAKE_CURRENT_SOURCE_DIR})
include_directories(${CMAKE_CURRENT_BINARY_DIR})
include_directories(${CMAKE_CURRENT_BINARY_DIR}/bitmaps/${GUI_DIR})

add_subdirectory(lua)
include(gui/CMakeLists.txt)

if(RAMBACKUP)
  add_definitions(-DRAMBACKUP)
  set(SRC ${SRC} storage/rambackup.cpp storage/rlc.cpp)
endif()

if(TEMPLATES)
  add_definitions(-DTEMPLATES)
  set(SRC ${SRC} templates.cpp)
  set(GUI_SRC ${GUI_SRC} model_templates.cpp)
endif()

if(NOT LUA STREQUAL NO)
  add_definitions(-DLUA)
  if(LUA_COMPILER)
    add_definitions(-DLUA_COMPILER)
  endif()
  if(LUA_ALLOCATOR_TRACER AND DEBUG)
    add_definitions(-DLUA_ALLOCATOR_TRACER)
  endif()
  if(NOT "${LUA_SCRIPT_LOAD_MODE}" STREQUAL "")
    add_definitions(-DLUA_SCRIPT_LOAD_MODE="${LUA_SCRIPT_LOAD_MODE}")
  endif()
  include_directories(${LUA_DIR})
  set(FIRMWARE_DEPENDENCIES ${FIRMWARE_DEPENDENCIES} ${LUA_EXPORT})
  if(LUA STREQUAL YES)
    add_definitions(-DLUA_MODEL_SCRIPTS)
    set(GUI_SRC ${GUI_SRC} model_custom_scripts.cpp)
  endif()
  set(SRC ${SRC} lua/interface.cpp lua/api_general.cpp lua/api_lcd.cpp lua/api_model.cpp)
  if(PCB STREQUAL X12S OR PCB STREQUAL X10)
    set(SRC ${SRC} lua/widgets.cpp)
  endif()
  set(LUA_SRC lapi.c lcode.c lctype.c ldebug.c ldo.c ldump.c lfunc.c lgc.c llex.c lmem.c lobject.c lopcodes.c lparser.c
    lstate.c lstring.c ltable.c lrotable.c ltm.c lundump.c lvm.c lzio.c linit.c
    lbaselib.c lmathlib.c lbitlib.c loadlib.c lauxlib.c ltablib.c lcorolib.c liolib.c lstrlib.c
    )
  foreach(FILE ${LUA_SRC})
    set(SRC ${SRC} ${LUA_DIR}/${FILE})
  endforeach()
  if(MSVC)
    # silence lots of warnings regarding "insecure" use of functions (sprintf, strcpy, etc) from Lua code
    set(WARNING_FLAGS "${WARNING_FLAGS} /D_CRT_SECURE_NO_WARNINGS")
  endif()
endif()

if(HELI)
  add_definitions(-DHELI)
endif()

if(FLIGHT_MODES)
  add_definitions(-DFLIGHT_MODES)
  set(GUI_SRC ${GUI_SRC} model_flightmodes.cpp)
endif()

if(CURVES)
  add_definitions(-DCURVES)
  set(SRC ${SRC} curves.cpp)
endif()

if(GVARS)
  add_definitions(-DGVARS)
  set(SRC ${SRC} gvars.cpp)
  math(EXPR EEPROM_VARIANT ${EEPROM_VARIANT}+${GVARS_VARIANT})
endif()

if(FAI STREQUAL YES)
  add_definitions(-DFAI)
elseif(FAI STREQUAL CHOICE)
  add_definitions(-DFAI_CHOICE)
endif()

if(FAS_PROTOTYPE)
  add_definitions(-DFAS_PROTOTYPE)
endif()

if(AUTOSOURCE)
  add_definitions(-DAUTOSOURCE)
endif()

if(AUTOSWITCH)
  add_definitions(-DAUTOSWITCH)
endif()

if(JITTER_MEASURE)
  add_definitions(-DJITTER_MEASURE)
endif()

if(WATCHDOG_DISABLED)
  add_definitions(-DWATCHDOG_DISABLED)
endif()

if(SIMU_AUDIO)
  add_definitions(-DSIMU_AUDIO)
endif()

if(SDCARD)
  add_definitions(-DSDCARD)
  include_directories(${FATFS_DIR} ${FATFS_DIR}/option)
  set(SRC ${SRC} sdcard.cpp rtc.cpp logs.cpp)
  set(FIRMWARE_SRC ${FIRMWARE_SRC} ${FATFS_SRC})
endif()

if(SHUTDOWN_CONFIRMATION)
  add_definitions(-DSHUTDOWN_CONFIRMATION)
endif()

if(PPM_UNIT STREQUAL US)
  add_definitions(-DPPM_UNIT_US)
elseif(PPM_UNIT STREQUAL PERCENT_PREC1)
  add_definitions(-DPPM_UNIT_PERCENT_PREC1)
else()
  add_definitions(-DPPM_UNIT_PERCENT_PREC0)
endif()

if(PPM_CENTER_ADJUSTABLE)
  add_definitions(-DPPM_CENTER_ADJUSTABLE)
endif()

if(PPM_LIMITS_SYMETRICAL)
  add_definitions(-DPPM_LIMITS_SYMETRICAL)
endif()

if(OVERRIDE_CHANNEL_FUNCTION)
  add_definitions(-DOVERRIDE_CHANNEL_FUNCTION)
endif()

if(DANGEROUS_MODULE_FUNCTIONS)
  add_definitions(-DDANGEROUS_MODULE_FUNCTIONS)
endif()

if(SPLASH STREQUAL FRSKY)
  add_definitions(-DSPLASH -DSPLASH_FRSKY)
elseif(NOT SPLASH STREQUAL OFF)
  add_definitions(-DSPLASH)
endif()

if(NOT DEFAULT_MODE STREQUAL "")
  add_definitions(-DDEFAULT_MODE=${DEFAULT_MODE})
endif()

if(TRACE_SIMPGMSPACE)
  add_definitions(-DTRACE_SIMPGMSPACE)
endif()

if(TRACE_LUA_INTERNALS)
  add_definitions(-DTRACE_LUA_INTERNALS_ENABLED)
endif()

if(FRSKY_STICKS)
  add_definitions(-DFRSKY_STICKS)
endif()

if(NOT FONT STREQUAL "")
  add_definitions(-DFONT=${DEFAULT_MODE})
endif()

if(EEPROM_VARIANT_NEEDED)
  add_definitions(-DEEPROM_VARIANT=${EEPROM_VARIANT})
endif()

if(NIGHTLY_BUILD_WARNING)
  add_definitions(-DNIGHTLY_BUILD_WARNING)
endif(NIGHTLY_BUILD_WARNING)

if(USEHORUSBT)
  add_definitions(-DUSEHORUSBT)
endif(USEHORUSBT)

set(SRC
  ${SRC}
  opentx.cpp
  functions.cpp
  strhelpers.cpp
  switches.cpp
  mixer.cpp
  stamp.cpp
  timers.cpp
  trainer_input.cpp
  )

if(GUI)
  add_definitions(-DGUI)
  set(SRC
    ${SRC}
    keys.cpp
    maths.cpp
    translations.cpp
    gui/gui_common.cpp
    )
  foreach(FILE ${GUI_SRC})
    set(SRC ${SRC} gui/${GUI_DIR}/${FILE})
  endforeach()
  if(ARCH STREQUAL ARM)
    set(SRC
      ${SRC}
      gui/gui_common_arm.cpp
      )
  endif()
endif()

foreach(FILE ${TARGET_SRC})
  set(SRC targets/${TARGET_DIR}/${FILE} ${SRC})
endforeach()

foreach(FILE ${FIRMWARE_TARGET_SRC})
  set(FIRMWARE_SRC ${FIRMWARE_SRC} targets/${TARGET_DIR}/${FILE})
endforeach()

foreach(FILE ${PULSES_SRC})
  set(SRC ${SRC} pulses/${FILE})
endforeach()

add_definitions(-DCORRECT_NEGATIVE_SHIFTS)

if(NOT MSVC)
  set(WARNING_FLAGS "${WARNING_FLAGS} -Wall -Wno-strict-aliasing -Wformat -Wreturn-type -Wunused -Wuninitialized -Wunknown-pragmas -Wno-switch -Wtype-limits")
  if(WARNINGS_AS_ERRORS)
    set(WARNING_FLAGS "${WARNING_FLAGS} -Werror")
  endif(WARNINGS_AS_ERRORS)
else()
  add_definitions(-DHAVE_STRUCT_TIMESPEC)  # this is for pthread.h
  if(WARNINGS_AS_ERRORS)
    set(WARNING_FLAGS "${WARNING_FLAGS} /WX")
  endif(WARNINGS_AS_ERRORS)
endif()

add_subdirectory(targets/simu)
if(NOT MSVC)
  add_subdirectory(tests)
endif()

set(SRC ${SRC} ${FIRMWARE_SRC})


##### firmware target #####

option(FIRMWARE_TARGET "Configure Firmware target (can be turned of for compiling Companion only)" ON)
if(NOT FIRMWARE_TARGET)
  message(STATUS "firmware target disabled")
  return()
endif()

set(CMAKE_EXECUTABLE_SUFFIX ".elf")
# trick to remove the -rdynamic and --out-implib issues
set(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
set(CMAKE_SHARED_LIBRARY_LINK_CXX_FLAGS "")
# similar for -mmacosx-version-min="
set(CMAKE_C_OSX_DEPLOYMENT_TARGET_FLAG "")
set(CMAKE_CXX_OSX_DEPLOYMENT_TARGET_FLAG "")
# reset some CMake default flags which assume optimization levels/etc
set(CMAKE_C_FLAGS "${FIRMWARE_C_FLAGS}")
set(CMAKE_C_FLAGS_DEBUG "${FIRMWARE_C_FLAGS_DEBUG}")
set(CMAKE_C_FLAGS_RELEASE "")
set(CMAKE_C_FLAGS_MINSIZEREL "")
set(CMAKE_C_FLAGS_RELWITHDEBINFO "")
set(CMAKE_CXX_FLAGS "${FIRMWARE_CXX_FLAGS}")
set(CMAKE_CXX_FLAGS_DEBUG "${FIRMWARE_CXX_FLAGS_DEBUG}")
set(CMAKE_CXX_FLAGS_RELEASE "")
set(CMAKE_CXX_FLAGS_MINSIZEREL "")
set(CMAKE_CXX_FLAGS_RELWITHDEBINFO "")
# customize linker command
set(CMAKE_EXE_LINKER_FLAGS "")
set(CMAKE_C_LINK_EXECUTABLE "<CMAKE_C_COMPILER> <FLAGS> <LINK_FLAGS> <OBJECTS>  -o <TARGET>")
set(CMAKE_CXX_LINK_EXECUTABLE "<CMAKE_CXX_COMPILER> <FLAGS> <LINK_FLAGS> <OBJECTS>  -o <TARGET>")

use_cxx11()  # ensure gnu++11 in CXX_FLAGS with CMake < 3.1

find_program(BASH bash HINTS "c:/cygwin/bin/" "c:/msys/bin/" DOC "bash shell for firmware size report (eg. c:/cygwin/bin/bash.exe on Windows).")

if(NOT MSVC)
  set(OPT s)

  if(ARCH STREQUAL ARM)

    enable_language(ASM)
    set(CMAKE_C_COMPILER arm-none-eabi-gcc)
    set(CMAKE_CXX_COMPILER arm-none-eabi-g++)
    set(CMAKE_ASM_COMPILER arm-none-eabi-as)

    set(CMAKE_SYSTEM_NAME Generic)
    set(CMAKE_SYSTEM_VERSION 1)
    set(CMAKE_ASM_COMPILE_OBJECT "<CMAKE_ASM_COMPILER> -o <OBJECT> <SOURCE>")

    set(COMMON_FLAGS "-mcpu=${MCU} -mthumb -fomit-frame-pointer -fverbose-asm -Wa,-ahlms=firmware.lst -O${OPT} -gdwarf-2 -DHSE_VALUE=${HSE_VALUE} -fno-exceptions -fdata-sections -ffunction-sections ${WARNING_FLAGS}")
    set(COMMON_FLAGS "${COMMON_FLAGS} ${FPU_FLAGS}")

    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMMON_FLAGS} -Wimplicit")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMMON_FLAGS}")

    # these are in addition to CMAKE_CXX_FLAGS
    set(CMAKE_EXE_LINKER_FLAGS "-lm -T${RADIO_SRC_DIRECTORY}/${LINKER_SCRIPT} -Wl,-Map=firmware.map,--cref,--no-warn-mismatch,--gc-sections")
    if(SEMIHOSTING)
      add_definitions(-DSEMIHOSTING)
      set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --specs=rdimon.specs")
    endif()
    # Use newlib nano, which saves a few kilobytes.
    if(NOT NANO STREQUAL NO)
      set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} --specs=nano.specs")
      if(NOT LUA STREQUAL NO)
        # Lua needs %g and %f
        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -u _printf_float -u _scanf_float")
      endif()
      # Nano's malloc does work well with lua, use our own
      add_definitions(-DUSE_BIN_ALLOCATOR)
      set(SRC ${SRC} bin_allocator.cpp)
    endif()


    if(PCB STREQUAL X9D OR PCB STREQUAL X9D+ OR PCB STREQUAL X9E OR PCB STREQUAL X7 OR PCB STREQUAL X10 OR PCB STREQUAL X12S)
      add_subdirectory(targets/common/arm/stm32/bootloader)
      include_directories(${CMAKE_CURRENT_BINARY_DIR}/targets/common/arm/stm32/bootloader)
      set(FIRMWARE_DEPENDENCIES ${FIRMWARE_DEPENDENCIES} bootloader)
    elseif(OPENRC_BOOTLOADER)
      # We fetch Mike's bootloader as it is not included inside OpenTX
      message(STATUS "Downloading Mike's bootloader: https://github.com/MikeBland/OpenRcBootloader/releases/download/V1.9/${OPENRC_BOOTLOADER}")
      file(DOWNLOAD https://github.com/MikeBland/OpenRcBootloader/releases/download/V1.9/${OPENRC_BOOTLOADER} ${CMAKE_CURRENT_BINARY_DIR}/bootloader.lbm STATUS status)
      list(GET status 0 error_code)
      if(error_code)
        list(GET status 1 error_message)
        message(FATAL_ERROR "Download failed: ${error_message}")
      endif()
    endif()

    add_executable(firmware ${SRC} ${FIRMWARE_HEADERS})
    link_libraries(firmware -lstdc++)
    add_dependencies(firmware ${FIRMWARE_DEPENDENCIES})

    add_custom_command(
      TARGET firmware POST_BUILD
      COMMAND arm-none-eabi-objcopy -O binary firmware.elf firmware.bin
      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
    )

    find_program(GAWK gawk HINTS "c:/cygwin/bin/" "c:/msys/bin/" DOC "gawk for firmware size report.")  # OS X might only have "awk"
    if (BASH AND GAWK)
      add_custom_target(firmware-size
        COMMAND ${BASH} -kc '${RADIO_DIRECTORY}/util/elf-size-report.sh --mcu=${CPU_TYPE_FULL} ${SIZE_TARGET_MEM_DEFINE} firmware.elf'
        DEPENDS firmware
        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
        )
    else()
      add_custom_target(firmware-size
        COMMAND arm-none-eabi-size -A firmware.elf
        DEPENDS firmware
        WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
        )
    endif()

  else()  # AVR

    set(CMAKE_C_COMPILER avr-gcc)
    set(CMAKE_CXX_COMPILER avr-gcc)

    set(COMMON_FLAGS "-mmcu=${MCU} -DF_CPU=16000000UL -O${OPT} -gdwarf-2 -fno-exceptions -flto -fwhole-program -fno-inline-small-functions -mstrict-X ${WARNING_FLAGS}")
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${COMMON_FLAGS}")
    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${COMMON_FLAGS}")
    set(CMAKE_EXE_LINKER_FLAGS "-Wno-uninitialized")  # bogus "uninitialized" warnings from ld

    include_directories(storage gui/${GUI_DIR})

    set(ALLSRC ${PROJECT_BINARY_DIR}/allsrc.cpp)
    if (BASH AND NOT WIN32)
      add_custom_command(
        OUTPUT ${ALLSRC}
        COMMAND ${BASH} -kc 'rm -f ${ALLSRC}\; for f in ${SRC}\; do echo "\\# 1 \\\"$$f\\\"" >> ${ALLSRC}\; cat "$$f" >> ${ALLSRC}\; done'
        WORKING_DIRECTORY ${RADIO_SRC_DIRECTORY}
        DEPENDS ${SRC}
        )
    elseif(WIN32)
      string(REPLACE "/" "\\" SRC_WIN "${SRC}")
      string(REPLACE "/" "\\" ALLSRC_WIN "${ALLSRC}")
      set(ALLSRC_BAT
          "setlocal EnableDelayedExpansion"
          "del \"${ALLSRC_WIN}\""
          "for %%f in (${SRC_WIN}) do ("
            "set p=\"%%f\""
            "set p=!p:^\\=/! \necho \# 1 !p! >> \"${ALLSRC_WIN}\""
            "type %%f >> \"${ALLSRC_WIN}\""
          ")\n"
        )
      string(REPLACE ";" "\n" ALLSRC_BAT "${ALLSRC_BAT}")
      file(WRITE "${ALLSRC}.bat" "${ALLSRC_BAT}")
      add_custom_command(
        OUTPUT ${ALLSRC}
        COMMAND "${ALLSRC}.bat"
        WORKING_DIRECTORY ${RADIO_SRC_DIRECTORY}
        DEPENDS ${SRC}
        )
    else()
      set(ALLSRC ${SRC})
    endif()
    add_executable(firmware ${ALLSRC})

    add_dependencies(firmware ${FIRMWARE_DEPENDENCIES})

    add_custom_command(
      TARGET firmware POST_BUILD
      COMMAND avr-objcopy -O ihex -R .eeprom firmware.elf firmware.hex
      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
      )

    add_custom_target(firmware.lss
      COMMAND avr-objdump -h -S firmware.elf > firmware.lss
      DEPENDS firmware
      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
      )

    add_custom_target(firmware-size
      COMMAND avr-size --format=avr --mcu=${MCU} firmware.elf
      DEPENDS firmware
      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
      )

  endif()  # ARM or AVR

  if(CPU_FAMILY STREQUAL STM32)
    add_custom_target(flash
      COMMAND dfu-util --alt 0 --dfuse-address 0x08000000:leave -d 0483:df11 -D firmware.bin
      DEPENDS firmware
      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
    )

    add_custom_target(jtag-flash
      COMMAND st-flash --reset write firmware.bin 0x8000000
      DEPENDS firmware
      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
      )
  else()
    add_custom_target(flash
      COMMAND avrdude -c usbasp -p ${AVRDUDE_MCU} -U flash:w:firmware.hex:i
      DEPENDS firmware
      WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
      )
  endif()

  PrintTargetReport("firmware")

endif(NOT MSVC)