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Re: configure.{in -> ac} rename (commit 35eafcc71b) broke in-tree binutils building of gcc

On Tue, Jul 14, 2015 at 10:13:06AM +0100, Jan Beulich wrote:
> Alan, gcc maintainers,
> I was quite surprised for my gcc 4.9.3 build (using binutils 2.25 instead
> of 2.24 as I had in use with 4.9.2) to fail in rather obscure ways. Quite
> a bit of digging resulted in me finding that gcc/ looks for
> in a number of binutils subtrees.

I haven't used combined tree builds of binutils+gcc for a very long
time, so this issue wasn't on my radar at all, sorry.

> Globally replacing
> by configure.[ai][cn] appears to address this, but I'm not
> sure whether that would be an acceptable change

Certainly sounds reasonable.

> (there doesn't seem
> to be a fix for this in gcc trunk either, which I originally expected I could
> simply backport).

The> rename happened over a year ago so I
guess this shows that not too many people use combined binutils+gcc
builds nowadays.  I've always found combined binutils+gcc builds not
worth the bother compared to simply building and installing binutils
first, as Jim suggests.

Alan Modra
Australia Development Lab, IBM

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