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Re: Ordering of ports move to libc
- From: Chris Metcalf <cmetcalf at tilera dot com>
- To: "Joseph S. Myers" <joseph at codesourcery dot com>, <libc-ports at sourceware dot org>
- Cc: Richard Henderson <rth at redhat dot com>, Carlos O'Donell <carlos at redhat dot com>, Marcus Shawcroft <marcus dot shawcroft at linaro dot org>
- Date: Thu, 30 Jan 2014 14:42:31 -0500
- Subject: Re: Ordering of ports move to libc
- Authentication-results: sourceware.org; auth=none
- References: <Pine dot LNX dot 4 dot 64 dot 1401301814160 dot 7025 at digraph dot polyomino dot org dot uk>
I will plan to move linux-generic and tile relatively promptly once master has reopened for 2.20.
I'm not sure how to judge whether the move breaks aarch64; presumably it "should" work via the include paths being correct. The best strategy may just be for me to coordinate with Marcus Shawcroft or whomever will be doing the aarch64 move. Since it won't break anyone else, perhaps it's reasonable just to line up availability for both of us and then I'll push tile once it works, then have Marcus quickly validate aarch64 isn't broken, then do the aarch64 move when it makes sense for him.
On 1/30/2014 1:29 PM, Joseph S. Myers wrote:
> After 2.19 has branched and master reopened for 2.20 development, we would
> like to move ports architectures to libc, as described at
> <https://sourceware.org/ml/libc-alpha/2014-01/msg00373.html> (which
> includes the architecture maintainers doing the moves for their
> architectures and checking that the before-and-after disassembly of
> installed shared libraries is identical).
> I've checked what cases there are where one ports architecture uses files
> from another. In such cases, either the moves need to be
> dependency-ordered, or else the #include direction needs to be reversed at
> move time. To avoid unnecessary churn and potential conflicts when two
> people try to move their architectures at once, I suggest
> dependency-ordering if the depended-on architecture can be moved quickly.
> The following architectures use linux-generic (both via Implies files and
> #include): aarch64, tile. So I suggest that linux-generic is moved early.
> There are the following other dependencies (for example, arm uses files
> from alpha):
> aarch64: arm
> arm: alpha
> microblaze: alpha
> mips: alpha arm hppa
> Thus, I suggest moving alpha early - and once that's moved, I'll move arm.
> hppa is blocked by not building rather than by dependencies; I'll reverse
> the #include direction between sysdeps/unix/sysv/linux/hppa/umount.c and
> sysdeps/unix/sysv/linux/mips/mips64/umount.c unless hppa is fixed soon
> (fixing the hppa build would unblock it for move to libc).
> As well as alpha, ia64 and m68k are unblocked for moving as soon as master
> reopens, and tile is unblocked as soon as linux-generic has moved (or they
> could move at the same time). I intend to remove am33 as soon as master
> When moving a port, as well as moving the files you should properly update
> the lists of ports in the libc README file as well.
Chris Metcalf, Tilera Corp.