[tlbuild] build on linux-powerpc
Thomas A. Schmitz
thomas.schmitz at uni-bonn.de
Fri Jun 19 15:14:18 CEST 2009
On Jun 19, 2009, at 1:19 PM, Peter Breitenlohner wrote:
> Hi Thomas,
> judging from my linux-x86_64 experience I'd say that this is only
> true. On linux-x86_64 you can run linux-i?86 binaries if and only
> if the
> kernel is built with 32-bit compatibility enabled (certainly done so
> by all
> distros). Thus, eventually, one may or may not want to have separate
> linux-ppc and linux-ppc64 binaries.
> and I forgot to mention: is it safe to assume that all linux-ppc64
> do have 32-bit versions of libfontconfig.so & Co? I have seen
> distros where
> these 32-bit compatibility libraries are optional (for the x86
> biarch case).
thanks for your input on this. I cannot claim to know all linux-ppc64
systems, but maybe a few thoughts: linux-ppc is quite small; only a
few distributions offer it at all (ubuntu, e.g., has no official ppc
release any more). AFAIK, these distributions do the same as debian:
only the kernel is 64-bit, the rest of the system is 32-bit. Splitting
a very small system into two even smaller subsystems doesn't make
sense for them, and a fortiori, it doesn't make sense for TeXLive.
Here's what the debian powerpc page has to say about it (http://www.debian.org/ports/powerpc/
> Please note that the Sarge release does not currently support 64-bit
> execution environments when used with 64-bit processors (e.g. a
> POWER4 or G5). A 64-bit environment is planned for a future release.
Looking at the debian ppc64-devel mailing list gives the impression
taht the project is all but dead: the last real posts date from August
2008; after that date, only the occasional spam mail. So I assume that
everything should work on most systems because they are 32-bit. The
only exception may be gentoo: they (used to) offer a real 64-bit
implementation of ppc. I had it running for a few weeks, and there
wasn't much software available for it, so I gave up. All of this to
say: I think the situation isn't quite comparable to i386/x86_64. But
of course, the proof of the pie is in the eating, and we might end up
with billions of linux-powerpc users banging on our doors because our
binaries don't work for them... but it's unlikely.
> Hi Karl,
> what is your opinion?
Yes Karl, please advice!
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