[avr-gcc-list] -fpacked-struct compiler option

[Anton Erasmus]

Hi,

The makefile example that comes with WinAVR uses the 
-fpacked-struct compiler option.

The gcc documentation has the following warning on this option:
Warning: the -fpack-struct switch causes GCC to generate code that is not 
binary 
compatible with code generated without that switch. Additionally, it makes the 
code 
suboptimial. Use it to conform to a non-default application binary interface.

So why is this option used in the example makefile. I would have thought that 
with the
avr being an 8-bit architecture that structures would automatically be packed, 
as there
is no advantage in accessing non-byte alligned data compared to accessing byte 
alligned data.

Regards
   Anton Erasmus

-- 
A J Erasmus