SdFat.h:138: undefined reference to `vtable for SdFile'
collect2: error: ld returned 1 exit status

Even when modified to include the utility dir. See https://github.com/kasbah/teensy-template/commits/master

This template is a great way to get started without needing a GUI. I just tried to upload the app to a teensy 3.1. The uploader reports an error that the binary was built for the "Teensy 3.0 (MX20DX128)" and the hardware is "Teensy 3.1 (MK20DX256)". Can the template be updated for use with the Teensy 3.1?

teensyduino 1.31 is out, and the tools have not been updated since 1.24
the tools may need to be updated to support newer devices

I must be missing something but I get:

$ make
[CXX]   src/main.cpp
/bin/sh: /Users/olivier/Dropbox/Developer/arduino/teensy-template/tools/arm-none-eabi/bin/arm-none-eabi-g++: cannot execute binary file
make: *** [/Users/olivier/Dropbox/Developer/arduino/teensy-template/build/src/main.o] Error 126

After cloning the project.

Would be great to have support for OSX, I've added symlinks in my folder and it works well. Maybe you could add a make init to properly link/copy the libs from the OS-dependant location?

$ ls -l
teensy3 -> /Applications/Arduino.app/Contents/Resources/Java/hardware/teensy/cores/teensy3/
tools -> /Applications/Arduino.app/Contents/Resources/Java/hardware/tools/

This template has been great for Teensy 3.1 projects. Has there been any planning or work done to support the new Teensy LC board? (Core MKL26Z64)

Do we really need the GCC toolchain inside of the repository? On Debian/Ubuntu the following command installs everything:

apt-get install gcc-arm-none-eabi

There might be similar packages for other distributions?

It seems dependencies are not working.
Changing a header does not trigger a rebuild of source files depending on it.

Not sure how to set the right version in the makefile.

I can not use your template in our project because of missing license. Would you please consider adding it?

This makefile template needs to be updated to support Teensy 4.0

It looks like this template does not support multiple *.ino files (not sure exactly how they are handled by the official IDE, they seem to be concatenated).

Even if I manually concatenate files, I'm having a lot of 'sendJson' was not declared in this scope, is there a flag to set to relax declaration?

Thanks!

Great project, thanks!

When enabling arduino (ie setting ARDUINO = 10600), make sure the LDFlags have rtc_localtime set (see line 73 of https://github.com/PaulStoffregen/cores/blob/master/teensy3/Makefile
);

# linker options
LDFLAGS = -Os -Wl,--gc-sections,--defsym=__rtc_localtime=0 --specs=nano.specs -mthumb -mcpu=cortex-m4

This will let the main.cpp work using standard Arduino code, for example:

#include "WProgram.h"

void setup(void){
    pinMode(13, OUTPUT);
}

void loop(void){
    digitalWrite(13, HIGH);
    delay(50);
    digitalWrite(13, LOW);
    delay(50);
}

extern "C" int main(void){
    setup();
    while (1) {
        loop();
        yield();
    }
}

Standard C++ code (thank you so much for this part!) will also work:

#include "WProgram.h"

extern "C" int main(void)
{
    pinMode(13, OUTPUT);
    while (1) {
        digitalWriteFast(13, HIGH);
        delay(50);
        digitalWriteFast(13, LOW);
        delay(50);
    }
}

Also, here are my options (based on yours and PJRC's):

# configurable options
OPTIONS = -DF_CPU=$(TEENSY_CORE_SPEED) -DUSB_SERIAL -DLAYOUT_US_ENGLISH -DUSING_MAKEFILE -ffunction-sections -fdata-sections

# options needed by many Arduino libraries to configure for Teensy 3.0
OPTIONS += -DARDUINO=$(ARDUINO) -DTEENSYDUINO=141

where disabling the bottom line will disable arduino. I like this better than the choice between DUSING_MAKEFILE or arduino, since both (arduino and no arduino) can be built with the makefile. Of course the best part about this is moving away from arduino but using the open source build engine. Thanks again for this!