List Archive: gentoo-alpha
Note: Due to technical difficulties, the Archives are currently not up to date.
provides an alternative service for most mailing lists.c.f. bug 424647
Thanks for the clarification. Some of the information floating around out
there is a bit vague and piecing together an answer has been somewhat of a
challenge. You did it in about 2 paragraphs.
This really answers most of the questions I've been trying to figure out for
the last many months. I new it had to be possible as X was running on this
machine (Compaq RH 7.3 distro), prior to my building out the Gentoo.
Things to do on my part:
1. Check my kernel build to confirm the floating point completion is
enabled in kernel
2. Add mieee to my CFLAGS (my CXXFLAGS pick-up my CFLAGS)
3. Try the USE="dlloader" flag
3a. alternatively try patching the Xorg elf-loader
----- Original Message -----
Sent: Tuesday, October 26, 2004 7:36 PM
Subject: Re: [gentoo-alpha] ebuild update for Xorg-x11
> Just to clear up any possible confusion regarding both -mieee and PIC
> Alpha processors prior to ev6 require a little help from libc / the kernel
to be IEEE compatible. Most code require this as Aron already mentioned. You
need to add -mieee to CFLAGS and it's cousin CXXFLAGS as well as enable
floating point completion in the kernel for this to work. Stuff like opengl
will probably break without this support.
> Regarding the possible PIC issues: shared libraries should be
compiled -fPIC (or -fpic) or you'll get linking errors on some archs. x86 is
mostly unaffected by this but you'll find that alpha complains loudly if
you'll try to link PIC and non-PIC code. Usually this results in errors
during the compilation aborting your emerge. Xfree and xorg-x11 is a little
different as it loads the driver modules dynamically at run-time using it's
own elf loader. This is also the reason that you'll see 'unsupported elf
relocation type' errors - the built-in elf loader doesn't support all the
relocation types that binutils does.
> There's basically two ways to solve this:
> 1. Patch the X elf loader to support all relocation types. There's some
patches floating around already that does this - at least to some extent.
> 2. Use dlload() instead of the built-in elf loader. You can turn on this
behaviour using USE="dlloader" and remerging xfree / xorg-x11. Beware that
this hasn't received as much testing yet as the built-in elf loader but it's
used by the Gentoo hardened project at least.
> Hope this clears up the confusion (if any).
> Bryan Ã~stergaard
> Gentoo/Alpha developer
> firstname.lastname@example.org mailing list
email@example.com mailing list