Distcc:cross-compiling necessary between nocona and pentium?

gentoome · Tux's lil' helper Joined: 18 Jul 2005 Posts: 78

I have a quick distcc question, I am getting a bit confused as to what is considered cross-compiling. On one machine I have a Core 2 Duo, so that make.conf is configured with --march=nocona. I want that computer to help an old PII-450 emerge its system, which is --march=pentium2. Do I need to follow instructions as if those computers were as different as x86 and ppc, or is the fact that they are both x86 sufficient to ensure compatibility regardless of --march ? Both computers are using gcc-4

Thanks in advance,

John

eccerr0r · Posted: Mon Oct 29, 2007 7:42 pm Post subject:

for the most part it seems gcc that's compiled with nocona support will also build other x86 binaries just fine, as long as you supply the right -marchitecture when building (and for the most part, em64t procs can run i686 binaries just fine without modification).

I did notice that the standard 32-bit gcc build does not, however, build 64-bit binaries (I was trying to get my 32-bit c2d install to distcc-help build for my Prescott em64t-build.)

Technically, cross-compiling is whenever the machine compiling is building binaries for another system of a different architecture. While using your P2 to build em64t is clearly crosscompiling, the other way around is gray area since the em64t can run p2 binaries

hmm...

http://gentoo-wiki.com/HOWTO_Cross_Compile
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