cmake_minimum_required(VERSION 3.10)
project(beyond_synaptics C CXX ASM)

set(CMAKE_EXECUTABLE_SUFFIX ".elf")
set(CMAKE_C_COMPILER_TARGET thumbv7m-unknown-none-eabi)
set(CMAKE_CXX_COMPILER_TARGET thumbv7m-unknown-none-eabi)
set(CMAKE_C_STANDARD 11)
set(CMAKE_C_STANDARD_REQUIRED ON)

set(CPU_FLAGS -mthumb -mcpu=cortex-m4 -mfloat-abi=softfp -mfpu=fpv4-sp-d16)
# set(COMPILER_FLAGS -ffreestanding -ffunction-sections -fdata-sections -fsigned-char -fmessage-length=0 -fshort-enums)
set(COMPILER_FLAGS -pipe -fno-strict-aliasing -Wall -Wstrict-prototypes -Wmissing-prototypes
 -Werror-implicit-function-declaration -Wpointer-arith -std=gnu99
 -ffunction-sections -fdata-sections -Wchar-subscripts -Wcomment
 -Wformat=2 -Wimplicit-int -Wmain -Wparentheses -Wsequence-point
 -Wreturn-type -Wswitch -Wtrigraphs -Wunused -Wuninitialized -Wunknown-pragmas -Wno-expansion-to-defined
 -Wfloat-equal -Wundef -Wshadow -Wbad-function-cast -Wwrite-strings -Wsign-compare
 -Waggregate-return -Wmissing-declarations -Wformat -Wmissing-format-attribute
 -Wno-deprecated-declarations -Wpacked -Wredundant-decls -Wnested-externs -Wlong-long
 -Wunreachable-code -Wcast-align --param max-inline-insns-single=500)
# NOTE: -mlong-calls REMOVED (0.4.4) — it wedged the MCU under SteamVR addon
# load (BeyondEyetracking/BeyondSteamVR co-driving 0101); hardware-isolated as
# the sole cause. -ffast-math also removed (unsafe FP / -ffinite-math-only kills
# NaN guards; its crtfastmath FPSCR init was gc-sections'd out anyway). The
# official Studio .cproj uses neither flag.


set(LINKER_FILE "${CMAKE_CURRENT_LIST_DIR}/src/ASF/sam/utils/linker_scripts/samg/samg55j19/gcc/flash_usb_bootloader.ld")

add_compile_options(${CPU_FLAGS} ${COMPILER_FLAGS})
add_link_options(${CPU_FLAGS})
add_definitions(-D__SAMG55J19__ -DARM_MATH_CM4=true -Dprintf=iprintf -D__FREERTOS__ -Dscanf=iscanf -DBOARD=USER_EXT_BOARD -DUDD_ENABLE -DNOTBOARD=SAMG55_XPLAINED_PRO -DUSER_BOARD_REVISION=4)

include(utils.cmake)

if("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang")
    include(../../../clang_utils.cmake)
    clang_utils_get_arm_gcc_sysroot(${ARM_GCC_C_COMPILER} ${CPU_FLAGS})
    clang_utils_get_arm_gcc_multilib_dir(${ARM_GCC_C_COMPILER} ${CPU_FLAGS})
    clang_utils_get_arm_gcc_lib_dir(${ARM_GCC_C_COMPILER} ${CPU_FLAGS})
    clang_utils_get_arm_gcc_crt(${ARM_GCC_SYSROOT} ${ARM_GCC_MULTIDIR} ${ARM_GCC_LIBGCC_DIR})
    string(APPEND CMAKE_EXE_LINKER_FLAGS
        " -nostdlib -L${ARM_GCC_SYSROOT}/lib/${ARM_GCC_MULTIDIR} -L${ARM_GCC_LIBGCC_DIR}")
    string(APPEND CMAKE_EXE_LINKER_FLAGS " -lgcc -lc_nano -lc")
elseif("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
    string(REGEX MATCH ".*\.specs.*" has_specs "${CMAKE_EXE_LINKER_FLAGS}")

    if(NOT has_specs)
        string(APPEND CMAKE_EXE_LINKER_FLAGS " --specs=nano.specs")
    endif()
endif()

string(REPLACE ";" " " _LINKER_CPU_FLAGS "${CPU_FLAGS}")

# subdirlist(include_dir_list ${CMAKE_CURRENT_LIST_DIR}/src)

add_executable(beyond_synaptics src/main.c)
target_include_directories(beyond_synaptics PRIVATE
src/
# Project source dirs must precede the ASF/CMSIS dirs: the samg55 CMSIS tree
# ships its own component/instance "adc.h" which otherwise shadows the
# project's src/Drivers/adc.h on a bare #include "adc.h".
src/Devices/
src/Drivers/
src/config/
src/crash_handler/
src/ASF/
src/ASF/common/
src/ASF/common/boards/
src/ASF/common/services/
src/ASF/common/services/clock/
src/ASF/common/services/clock/samg/
src/ASF/common/services/ioport/
src/ASF/common/services/ioport/sam/
src/ASF/common/services/serial/
src/ASF/common/services/serial/sam_uart/
src/ASF/common/services/sleepmgr/
src/ASF/common/services/sleepmgr/sam/
src/ASF/common/services/usb/
src/ASF/common/services/usb/class/
src/ASF/common/services/usb/class/audio/device
src/ASF/common/services/usb/class/audio
src/ASF/common/services/usb/class/hid
src/ASF/common/services/usb/class/hid/device
src/ASF/common/services/usb/class/composite
src/ASF/common/services/usb/class/hid/device/generic
src/ASF/common/services/usb/udc/
src/ASF/common/utils/
src/ASF/common/utils/interrupt/
src/ASF/common/utils/stdio/
src/ASF/common/utils/stdio/stdio_serial/
src/ASF/sam/
src/ASF/sam/boards/
src/ASF/sam/boards/displayboard
src/ASF/sam/boards/samg55_xplained_pro/
src/ASF/sam/drivers/
src/ASF/sam/drivers/adc/
src/ASF/sam/drivers/efc/
src/ASF/sam/drivers/flexcom/
src/ASF/sam/drivers/matrix/
src/ASF/sam/drivers/pdc/
src/ASF/sam/drivers/pdc/pdc_uart_example/
src/ASF/sam/drivers/pdm/
src/ASF/sam/drivers/pio/
src/ASF/sam/drivers/pmc/
src/ASF/sam/drivers/supc/
src/ASF/sam/drivers/udp/
src/ASF/sam/drivers/usart/
src/ASF/sam/utils/
src/ASF/sam/utils/cmsis/
src/ASF/sam/utils/cmsis/samg/
src/ASF/sam/utils/cmsis/samg/samg55/
src/ASF/sam/utils/cmsis/samg/samg55/include/
src/ASF/sam/utils/cmsis/samg/samg55/include/component/
src/ASF/sam/utils/cmsis/samg/samg55/include/instance/
src/ASF/sam/utils/cmsis/samg/samg55/include/pio/
src/ASF/sam/utils/cmsis/samg/samg55/source/
src/ASF/sam/utils/cmsis/samg/samg55/source/templates/
src/ASF/sam/utils/cmsis/samg/samg55/source/templates/gcc/
src/ASF/sam/utils/fpu/
src/ASF/sam/utils/header_files/
src/ASF/sam/utils/linker_scripts/
src/ASF/sam/utils/linker_scripts/samg/
src/ASF/sam/utils/linker_scripts/samg/samg55j19/
src/ASF/sam/utils/linker_scripts/samg/samg55j19/gcc/
src/ASF/sam/utils/make/
src/ASF/sam/utils/preprocessor/
src/ASF/sam/utils/syscalls/
src/ASF/sam/utils/syscalls/gcc/
src/ASF/thirdparty/
src/ASF/thirdparty/CMSIS/
src/ASF/thirdparty/CMSIS/Include/
src/ASF/thirdparty/CMSIS/Lib/
src/ASF/thirdparty/CMSIS/Lib/GCC/
src/ASF/thirdparty/freertos/
src/ASF/thirdparty/freertos/freertos-10.0.0/
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/include/
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/portable/
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/portable/GCC/
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/portable/GCC/ARM_CM4F/
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/portable/MemMang/
src/config/
src/Devices
src/Drivers
src/crash_handler
)

target_sources(beyond_synaptics PRIVATE 
src/ASF/common/services/usb/class/audio/device/udi_audio.c
src/ASF/common/services/usb/class/hid/device/udi_hid_desc.c
src/ASF/sam/boards/displayboard/displayboard_init.c
src/ASF/sam/drivers/adc/adc2.c
src/crash_handler/crash_handler.c
src/Devices/eyetrack_fpga.c
src/Devices/fan_motor_control.c
src/Devices/linkbox_hpd.c
src/Devices/oled_control.c
src/Devices/prox_control.c
src/Devices/prox_tmd2635.c
src/Devices/rgb_led.c
src/Devices/usb2517.c
src/Devices/usb3803.c
src/Devices/usbc_mux.c
src/Devices/vxr_interface.c
src/Devices/tundra_uart.c
src/Drivers/adc.c
src/Drivers/flash_mutex.c
src/Drivers/i2c.c
src/Drivers/pdm_mics.c
src/Drivers/power_control.c
src/Drivers/rtt_util.c
src/Drivers/signature.c
src/Drivers/temp_sense.c
src/eeprom_emulation.c
src/hw_test.c
src/sw_ver.c
src/ui_interface.c
src/usart_interface.c
src/usbhid_interface.c
src/video_proc.c
src/test_and_debug.c
src/ASF/common/services/usb/class/composite/udi_composite_desc.c
src/ASF/common/services/usb/class/hid/device/generic/udi_hid_generic.c
src/ASF/common/services/usb/class/hid/device/udi_hid.c
src/ASF/common/services/usb/udc/udc.c
src/ASF/sam/drivers/pio/pio_handler.c
src/ASF/sam/drivers/udp/udp_device.c
src/ASF/sam/drivers/matrix/matrix.c
src/ASF/sam/drivers/pdc/pdc.c
src/ASF/sam/drivers/pdm/pdm.c
src/ASF/sam/drivers/pio/pio.c
src/ASF/common/services/clock/samg/sysclk.c
src/ASF/common/services/serial/usart_serial.c
src/ASF/common/services/sleepmgr/sam/sleepmgr.c
src/ASF/common/utils/interrupt/interrupt_sam_nvic.c
src/ASF/common/utils/stdio/read.c
src/ASF/common/utils/stdio/write.c
src/ASF/sam/drivers/efc/efc.c
src/ASF/sam/drivers/flexcom/flexcom.c
src/ASF/sam/drivers/pmc/pmc.c
src/ASF/sam/drivers/pmc/sleep.c
src/ASF/sam/drivers/supc/supc.c
src/ASF/sam/drivers/usart/usart.c
src/ASF/sam/utils/cmsis/samg/samg55/source/templates/gcc/startup_samg55.c
src/ASF/sam/utils/cmsis/samg/samg55/source/templates/system_samg55.c
src/ASF/sam/utils/syscalls/gcc/syscalls.c
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/croutine.c
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/event_groups.c
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/list.c
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/portable/GCC/ARM_CM4F/port.c
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/portable/MemMang/heap_3.c
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/queue.c
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/stream_buffer.c
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/tasks.c
src/ASF/thirdparty/freertos/freertos-10.0.0/Source/timers.c
)

target_link_directories(beyond_synaptics PRIVATE src/ASF/thirdparty/CMSIS/Lib/GCC)
target_link_libraries(beyond_synaptics PRIVATE arm_cortexM4lf_math m)

target_link_options(beyond_synaptics PRIVATE -Wl,--gc-sections -Wl,-T ${LINKER_FILE})

firmware_size(beyond_synaptics sysv)
generate_object(beyond_synaptics .bin binary)

if ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
     generate_object(beyond_synaptics .hex ihex)
endif()