Sean Cavanaugh wrote: > > > -------------------------------------------------- > From: "Tim Daneliuk" <[EMAIL PROTECTED]> > Sent: Thursday, June 26, 2008 4:51 PM > To: "Kris Kennaway" <[EMAIL PROTECTED]>; "FreeBSD Mailing List" > <freebsd-questions@FreeBSD.org> > Subject: Re: Making World For amd64 > >> 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? >> >> 2) Can a binary from a 32-bit FreeBSD system be run unmodified on the >> 64-bit system? >> >> 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? >> >> TIA, > > > I take this to mean you have an i386 install and want to compile amd64 > on it.
No - although that is an interesting question in its own right. I was more interested in the general question of whether 32-bit and 64-bit binaries are the same or different. I would assume that something has to be compiled to take advantage of 64-bit operations. But this then leads to the two questions: How does makeworld know which way to build the binaries and Can a 32bit binary be run on a 64bit system (or vice versa) in some compatibility or degraded mode... -- ---------------------------------------------------------------------------- Tim Daneliuk [EMAIL PROTECTED] PGP Key: http://www.tundraware.com/PGP/ _______________________________________________ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
