Tim Daneliuk wrote:
Kris Kennaway wrote:
Tim Daneliuk wrote:
Kris Kennaway wrote:
Tim Daneliuk wrote:
Is there anything special one has to do when doing a make world
intended for 64-bit FreeBSD or is it sufficient to build the 64-bit
kernel and make world as everywhere else?
The same as everywhere else.
Kris
So, I take it that this means that all the userspace programs, ports,
packages, utilities, etc. do *not* take advantage of the 64-bit
extensions. That is, only the kernel gets the benefit of the
wider word. Is that correct?
No, everything is 100% native.
Kris
OK, these may be really stupid questions but:
1) How does make world know whether to build 32-bit or 64-bit binaries?
It always uses the native format. amd64 == 64 bit, i386 == 32 bit
2) Can a binary from a 32-bit FreeBSD system be run unmodified on the
64-bit system?
Yes, amd64 also builds 32-bit libraries to support this.
3) If I reboot with 32-bit or 64-bit kernels, does the system magically
somehow make the userland stuff work natively at the word width?
If so, how?
You can't run 64 bit binaries on a 32-bit kernel, but you can the other
way around.
Kris
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