Linux: 64-bit systems, 32-bit program can compile it?

Prosperous, democratic, harmonious: 
@salmon with a 64-bit system, 32 of those board program will compile it? 
Less: 
can ah 
less: 
only the cortex a53 a57 is the 64-bit processor, 
prosperous, democratic, harmonious: 
I used to do when compiling a 64-bit system can not handle 32-bit forced into 
less: 
Most ARM development board are 32 is 
less: 
you can install the package path ah 
less: 
dependencies deletion 
less: 
further switching system toss