Compiling Libnodave for ARM processors

<H1>Compiling Libnodave for ARM processors</H1>
Libnodave did not work on ARM processors. It seemed that the processor cannot access a word on a
non word boundary (odd address). The following code did not work:
<pre>
    ((PDUHeader*)p->header)->plen=daveSwapIed_16(len);
</pre>    
Here the pointer p->header has been set two an odd address. The offset of plen in the
structure PDUHeader is even, hence the resulting pointer points at an odd address.
The ARM seems to take the previous lower word boundary instead of the calculated address.
It seems that no compiler option could prevent this, possibly because the final address is the result of a calculation
and not known at comile time. The following work around fixes this.
<pre>
    templen=daveSwapIed_16(len);
    memcpy(&(((PDUHeader*)p->header)->plen),&templen,sizeof(us));
</pre>
Memcpy seems to use two subsequent byte accesses and works as expected.