[gentoo-alt] [PREFIX] treewide changes: userland and ARCH settings

[Fabian Groffen]

Hi all,

Our Gentoo/FreeBSD collegues are currently adding a lot of userland_GNU
conditional stuff into the main tree to move e.g. binaries like gawk out
of /bin into /usr/bin.  This affects us too, since we do not have a GNU
userland according to the profiles.  It's on my wishlist to make this
USERLAND="GNU" in prefix, but I held off the boat for now, because some
things in the tree assume there is e.g. a userland_Darwin thing.  I
think this is the moment the switch will have to happen (look at the
uglyness in the sed ebuild around line 51 to see what happens if we
don't do this now).  (Also note that that code snippet there could use
"use prefix" instead of the string compare.)

Second thing I ran into one or two days ago on Solaris is that currently
x86-solaris, x86-macos and x86 all have "use x86" resolving to true.
The same of course for ppc-macos, ppc-aix and ppc, for which "use ppc"
resolves to true.  The reason for this is that we set ARCH to x86 or ppc
in the respective cases from above.  Portage apparently maps this into a
USE expansion, hence use x86 works.  To have use x86-macos working, we
have USE="x86-macos" etc. in our profiles.  I suggest we dump the USE=
line and use ARCH=ppc-macos or similar so we just only get a use
expansion for our real keyword, and not just the arch.  Since you
shouldn't use "use ppc-macos" in an ebuild EVER, I don't see problems.
What you use it for is in things like
SRC_URI="ppc-macos? ( some ppc-macos url )
	x86? ( some x86-linux url )"

So, I plan to make the above changes at once and see what happens.  Any
comments or visions on gaping holes which I might oversee?


-- 
Fabian Groffen
Gentoo on a different level
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