Re:[avr-gcc-list] Diffenrces betwwen Volkers and Gunnars distribution

[Peter Fleury]

The difference between Volker's distribution (based on avr-gcc 2.95-2)
and Gunnars (based on avr-gcc 2.97) are mainly the followings:

1) different function call convention:
   If you have written modules in ASM which need to be called by 
   avr-gcc C-modules, the ASM modules must be adapted
   ( single byte parameter now passed using r24, r22 .. )

2) bug with avr-objcopy with eeprom section
   avr-objcopy incorrectly add the eeprom section to both the rom and the
   AVR Studio obj file.
   Workaround: add -R .eeprom to both the .rom and .obj target
  
   avr-gcc incorrectly adds an offset to the eeprom section
   Workaround: add --change-section-lma .eeprom=0 to the .eep target.

3) Several reported bugs with flag -O3:
   strlen() built-in line reports wrong result
   Workaround: use -O2 or -Os

Peter Fleury  address@hidden http://jump.to/fleury