Firmware size comparison

avr-gcc compilations » binary result sizes

avr-hello

source:

#include <stdio.h>

int main() {
     sprintf("%s", "hello world");
     return 0;
}

avr-gcc -o avr-hello.elf avr-hello.cpp:

# regular
elf: 2590, hex: 791

# stripped
elf:  624, hex: 529

avr-gcc -mmcu=atmega328p -DF_CPU=8000000L -DARDUINO=105 -ffunction-sections -fdata-sections -g -Os -w -fno-exceptions -o avr-hello.elf avr-hello.cpp:

# regular
elf: 11596, hex: 586

# stripped
elf:   568, hex: 586

avr-sim

source:

#include <sim.h>

int main() {
     _d("hello world\n");
     return 0;
}

binary sizes:

# regular
elf: 10406, hex: 4747

# stripped
elf:   568, hex: 586

arduino-vector

Based on avr-stl-1.1.1:

• http://andybrown.me.uk/2011/01/15/the-standard-template-library-stl-for-avr-with-c-streams/

• https://drive.google.com/uc?export=download&id=0B9Zobp2aWUKzb2xvZ0Y2VGd1RTQ

source:

#include <Arduino.h>
#include <pnew.cpp>
#include <iterator>
#include <vector>

int main() {
    std::vector<double> values;
    values.push_back(42.42);
    return 0;
}

binary sizes:

# regular
hello.elf: 51200, hello.hex: 2358

# stripped
hello.elf:  1272, hello.hex: 2358