On Wednesday 15 March 2006 12:48, Michael Sullivan
[EMAIL PROTECTED] wrote about '[gentoo-user] OT - I've built my
cross-compilation environment; now what?':
I've succeeded in building a cross-compilation environment for an i586
on an i686 via crossdev, but I'm unsure how to use it. Can anyone help
me? There are no docs for crossdev in /usr/share/doc, no man pages for
it that I can find, and no info pages. I looked at the log files
Good luck finding solid cross-compilation documentation for /any/
environment. That's black magic only practiced by high-geeks. ;) Even
they avoid it when possible because of the high toll on the practitioners
sanity. ;)
Most of us only use the cross-compilation toolchain for such geek-bishop
activities as distcc.
crossdev created when I ran it and I see things like this:
emerge (1 of 1) cross-i586-gnu-linux/gcc-3.4.5-r1 to /
But when I try to emerge things myself for the environment, emerge
doesn't know what I'm talking about:
camille ~ # emerge cross-i586-gnu-linux/mysql
Calculating dependencies
emerge: there are no ebuilds to satisfy cross-i586-gnu-linux/mysql.
It's not quite that easy. You may need to change your make.conf,
make.profile, and /etc/portage to correct values for the TARGET
architecture (emerge will still use them and a -march=i686 will ruin the
packages you build, even if you use i586-pc-linux-gnu-gcc to build them),
then make sure and run emerge with the ROOT in your environment set to
where you want the alternate installation rooted.
Check out http://dev.gentoo.org/~vapier/CROSS-COMPILE-HOWTO . Specifically
the very bottom (Step 9) where he talks about installing stuff.
WARNING: I've heard some ebuilds don't respect ROOT and/or that ROOT is
ignored if you try and specify it in make.conf.
NB: The cross-* categories are only for the toolchain. Other packages
don't use their category for cross-compiling.
--
If there's one thing we've established over the years,
it's that the vast majority of our users don't have the slightest
clue what's best for them in terms of package stability.
-- Gentoo Developer Ciaran McCreesh
--
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