On 08/04/2011 1:06 PM, Nick Foster wrote:
Make sure you're compiling with optimization flags appropriate for the
hardware you're planning to run on. For instance, if you spec -msse3 or
newer on a pre-Prescott P4, you'll generate instructions the CPU can't
execute. I'm pretty sure GCC won't generate these instructions unless
you specify it using these flags so make sure your automake/cmake setup
isn't doing so.
Another issue is if you compile on a 32-bit compiler it'll barf on a
64-bit system, and this might generate an illegal instruction error.
This is the reason package maintainers keep a 32-bit and 64-bit version
of their packages. If you want to make code that runs on a 64-bit system
from your 32-bit system, you'll have to use a 64-bit GCC installation (I
think GCC is the same for either, but you need 64-bit libc) and use -m64
as a compile flag.
Hmm, my "make" use using the "naked" compiler without any extra flags.
The target system is
a Pentium-IV, and my build system is a 32-bit Intel Core (T2400).
_______________________________________________
Discuss-gnuradio mailing list
Discuss-gnuradio@gnu.org
http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
