[bug#48825] [PATCH] gnu: Simplify the use of --with-long-double-128 on powerpc64le.

[Chris Marusich]

Hi,

Currently in Guix, we explicitly specify --with-long-double-128 on
powerpc64le-linux (and potentially other powerpc64-* systems) in two
places.  It turns out that this is not necessary.  This patch simplifies
our code.

I originally authored this in order to try fixing bug 47698, but it
didn't solve that problem, and it turns out the --with-long-double-128
option is probably unrelated to that bug.  However, it's still worth
making this change to simplify our code.

If nobody has any issues with this, then in 2 weeks I will commit it.
One question is: where should I commit it?  I'd like to commit it to
master, but it causes many rebuilds on powerpc64le-linux (it does not
cause rebuilds on any other platforms), so per the guidelines ((guix)
Submitting Patches) I ought to commit it to core-updates.  However,
because the glibc upgrade from 2.31 to 2.32 on core-updates causes many
problems for powerpc64le-linux, core-updates has never once been a
viable branch for powerpc64le-linux in the time since support was first
added on master.  So if I commit this patch to core-updates, it won't
really do anyone any good right now.  With all this in mind, I think
master is the right place to commit this patch.

-- 
Chris

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