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Thread: Makefile for Teensy 4.1

  1. #1
    Junior Member
    Join Date
    Mar 2021
    Posts
    8

    Makefile for Teensy 4.1

    Hey hey.
    So, I am not the biggest fan of using an IDE.
    To whom it may concern: This is my makefile from ARDUNIOPATH/hardware/teensy/avr/cores/teensy4

    I patched it, so it can run the Blink example on the Teensy 4.1


    Code:
    # Teensyduino Core Library
    # http://www.pjrc.com/teensy/
    # Copyright (c) 2019 PJRC.COM, LLC.
    #
    # Permission is hereby granted, free of charge, to any person obtaining
    # a copy of this software and associated documentation files (the
    # "Software"), to deal in the Software without restriction, including
    # without limitation the rights to use, copy, modify, merge, publish,
    # distribute, sublicense, and/or sell copies of the Software, and to
    # permit persons to whom the Software is furnished to do so, subject to
    # the following conditions:
    #
    # 1. The above copyright notice and this permission notice shall be
    # included in all copies or substantial portions of the Software.
    #
    # 2. If the Software is incorporated into a build system that allows
    # selection among a list of target devices, then similar target
    # devices manufactured by PJRC.COM must be included in the list of
    # target devices and selectable in the same manner.
    #
    # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
    # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
    # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
    # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
    # BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
    # ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
    # CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
    # SOFTWARE.
    
    # set your MCU type here, or make command line `make MCU=IMXRT1062`
    MCU=IMXRT1062
    
    # The name of your project (used to name the compiled .hex file)
    TARGET = main
    
    # configurable options
    OPTIONS = -DF_CPU=600000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -DUSING_MAKEFILE
    
    # options needed by many Arduino libraries to configure for Teensy 4.0
    OPTIONS += -D__$(MCU)__ -DARDUINO=10813 -DTEENSYDUINO=153 -DARDUINO_TEENSY41
    
    # for Cortex M7 with single & double precision FPU
    CPUOPTIONS = -mcpu=cortex-m7 -mfloat-abi=hard -mfpu=fpv5-d16 -mthumb
    
    # use this for a smaller, no-float printf
    #SPECS = --specs=nano.specs
    
    # Other Makefiles and project templates for Teensy
    #
    # https://forum.pjrc.com/threads/57251?p=213332&viewfull=1#post213332
    # https://github.com/apmorton/teensy-template
    # https://github.com/xxxajk/Arduino_Makefile_master
    # https://github.com/JonHylands/uCee
    
    
    #************************************************************************
    # Location of Teensyduino utilities, Toolchain, and Arduino Libraries.
    # To use this makefile without Arduino, copy the resources from these
    # locations and edit the pathnames.  The rest of Arduino is not needed.
    #************************************************************************
    
    # Those that specify a NO_ARDUINO environment variable will
    # be able to use this Makefile with no Arduino dependency.
    # Please note that if ARDUINOPATH was set, it will override
    # the NO_ARDUINO behaviour.
    ifndef NO_ARDUINO
    # Path to your arduino installation
    ARDUINOPATH ?= ../../../../..
    endif
    
    ifdef ARDUINOPATH
    
    # path location for Teensy Loader, teensy_post_compile and teensy_reboot (on Linux)
    TOOLSPATH = $(abspath $(ARDUINOPATH)/hardware/tools)
    
    # path location for Arduino libraries (currently not used)
    LIBRARYPATH = $(abspath $(ARDUINOPATH)/libraries)
    
    # path location for the arm-none-eabi compiler
    COMPILERPATH = $(abspath $(ARDUINOPATH)/hardware/tools/arm/bin)
    
    else
    # Default to the normal GNU/Linux compiler path if NO_ARDUINO
    # and ARDUINOPATH was not set.
    COMPILERPATH ?= /usr/bin
    
    endif
    
    #************************************************************************
    # Settings below this point usually do not need to be edited
    #************************************************************************
    
    # CPPFLAGS = compiler options for C and C++
    CPPFLAGS = -Wall -g -O2 $(CPUOPTIONS) -MMD $(OPTIONS) -I. -ffunction-sections -fdata-sections
    
    # compiler options for C++ only
    CXXFLAGS = -std=gnu++14 -felide-constructors -fno-exceptions -fpermissive -fno-rtti -Wno-error=narrowing
    
    # compiler options for C only
    CFLAGS =
    
    # linker options
    LDFLAGS = -Os -Wl,--gc-sections,--relax $(SPECS) $(CPUOPTIONS) -T$(MCU_LD)
    
    # additional libraries to link
    LIBS = -larm_cortexM7lfsp_math -lm -lstdc++
    
    
    # names for the compiler programs
    CC = $(COMPILERPATH)/arm-none-eabi-gcc
    CXX = $(COMPILERPATH)/arm-none-eabi-g++
    OBJCOPY = $(COMPILERPATH)/arm-none-eabi-objcopy
    SIZE = $(COMPILERPATH)/arm-none-eabi-size
    
    # automatically create lists of the sources and objects
    # TODO: this does not handle Arduino libraries yet...
    C_FILES := $(wildcard *.c)
    CPP_FILES := $(wildcard *.cpp)
    OBJS := $(C_FILES:.c=.o) $(CPP_FILES:.cpp=.o)
    
    
    # the actual makefile rules (all .o files built by GNU make's default implicit rules)
    
    all: $(TARGET).hex
    
    $(TARGET).elf: $(OBJS) $(MCU_LD)
    	$(CC) $(LDFLAGS) -o $@ $(OBJS) $(LIBS)
    
    %.hex: %.elf
    	$(SIZE) $<
    	$(OBJCOPY) -O ihex -R .eeprom $< $@
    ifneq (,$(wildcard $(TOOLSPATH)))
    	$(TOOLSPATH)/teensy_post_compile -file=$(basename $@) -path=$(shell pwd) -tools=$(TOOLSPATH)
    	-$(TOOLSPATH)/teensy_reboot
    endif
    
    # compiler generated dependency info
    -include $(OBJS:.o=.d)
    
    # make "MCU" lower case
    LOWER_MCU := $(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(subst G,g,$(subst H,h,$(subst I,i,$(subst J,j,$(subst K,k,$(subst L,l,$(subst M,m,$(subst N,n,$(subst O,o,$(subst P,p,$(subst Q,q,$(subst R,r,$(subst S,s,$(subst T,t,$(subst U,u,$(subst V,v,$(subst W,w,$(subst X,x,$(subst Y,y,$(subst Z,z,$(MCU)))))))))))))))))))))))))))
    #MCU_LD = $(LOWER_MCU).ld
    MCU_LD = imxrt1062_t41.ld
    
    clean:
    	rm -f *.o *.d $(TARGET).elf $(TARGET).hex

  2. #2
    Senior Member+ KurtE's Avatar
    Join Date
    Jan 2014
    Posts
    11,158
    What all did you need to change?

    The current Makefile, in the latest Teensyduino beta release is already setup I thought to handle T4 or T4.1

    Where you comment out some defines for T4 and un comment the T4.1 ones..

    Code:
    # Use these lines for Teensy 4.0
    MCU = IMXRT1062
    MCU_LD = imxrt1062.ld
    MCU_DEF = ARDUINO_TEENSY40
    
    # Use these lines for Teensy 4.1
    #MCU = IMXRT1062
    #MCU_LD = imxrt1062_t41.ld
    #MCU_DEF = ARDUINO_TEENSY41
    
    # The name of your project (used to name the compiled .hex file)
    TARGET = main
    
    # configurable options
    OPTIONS = -DF_CPU=600000000 -DUSB_SERIAL -DLAYOUT_US_ENGLISH -DUSING_MAKEFILE
    #
    # USB Type configuration:
    #   -DUSB_SERIAL
    #   -DUSB_DUAL_SERIAL
    #   -DUSB_TRIPLE_SERIAL
    #   -DUSB_KEYBOARDONLY
    #   -DUSB_TOUCHSCREEN
    #   -DUSB_HID_TOUCHSCREEN
    #   -DUSB_HID
    #   -DUSB_SERIAL_HID
    #   -DUSB_MIDI
    #   -DUSB_MIDI4
    #   -DUSB_MIDI16
    #   -DUSB_MIDI_SERIAL
    #   -DUSB_MIDI4_SERIAL
    #   -DUSB_MIDI16_SERIAL
    #   -DUSB_AUDIO
    #   -DUSB_MIDI_AUDIO_SERIAL
    #   -DUSB_MIDI16_AUDIO_SERIAL
    #   -DUSB_MTPDISK
    #   -DUSB_RAWHID
    #   -DUSB_FLIGHTSIM
    #   -DUSB_FLIGHTSIM_JOYSTICK
    
    # options needed by many Arduino libraries to configure for Teensy model
    OPTIONS += -D__$(MCU)__ -DARDUINO=10813 -DTEENSYDUINO=154 -D$(MCU_DEF)

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