Hi,
I am currently moving my arduino development to eclipse and I have stumbled with a painful problem which I am struggling with and would like to see if anyone has experienced the same problem and sorted it out.
I have problems with the size of the executable image it generates.
Configuration:
- eclipse indigo 64 for Mac OSX
- AVR CrossPack - latest version 2010015
- avrclipse plug-in - latest version downloaded from repository
Project setup:
- core arduino library: core library from Arduino generating a static library.
- main test project: small test project that blinks an LED and prints how much RAM is available on the UART.
Project, compilation and link flags:
- both project are configured in release mode with, optimizations for size and no debug information
- AVR C++ compiler avr-gcc.
- AVR C++ compiler additional optimization flags:
-ffunction-sections -fdata-sections -Wl,--gc-sections - AVR project
target: atmega328p, F_CPU: 16000000 MHz - Addtional linker flags:
${COMMAND} --cref -s -Os ${OUTPUT_FLAG}${OUTPUT_PREFIX}${OUTPUT} ${INPUTS} -lm ${FLAGS}
Both projects compile correctly (static arduino library and main test project) and generate a library and an executable image. I have also downloaded the image through the eclipse IDE fine onto the target and it works correctly on the target board.
avr-size --format=avr --mcu=atmega328p test.elf
AVR Memory Usage
----------------
Device: atmega328p
Program: 10732 bytes (32.8% Full)
(.text + .data + .bootloader)
Data: 223 bytes (10.9% Full)
(.data + .bss + .noinit)
10732 bytes!!! where the same "sketch" compiled with the arduino sdk is 2594 bytes. Any thoughts?
Any thoughts and help will be much appreciated?