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Re: [RFC PATCH 00/11] Library OS support
- From: Joseph Myers <joseph at codesourcery dot com>
- To: Isaku Yamahata <isaku dot yamahata at gmail dot com>
- Cc: <libc-alpha at sourceware dot org>, <isaku dot yamahata at intel dot com>
- Date: Thu, 12 Sep 2019 00:10:32 +0000
- Subject: Re: [RFC PATCH 00/11] Library OS support
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On Wed, 11 Sep 2019, Isaku Yamahata wrote:
> This patch is to add Library OS(LibOS in short) to glibc.
> This is the first version of patch series to support LibOS.
I don't see anything here about host triplets being used. I'd expect
x86_64-*-libos or similar (with consequent config.sub changes being
submitted to GNU config.git) but there's nothing to indicate that, and the
patch series is lacking documentation (NEWS, install.texi / regeneration
of INSTALL, other .texi files if applicable). I'd also expect any new OS
to have appropriate additions to build-many-glibcs.py. There are a great
many complications specific to existing GNU/Linux ABIs that ought to be
irrelevant in this case (compat support for old symbol versions,
enable-kernel support for different minimum kernel versions, etc.).
Given the modification of generic files, you should verify that installed
stripped shared libraries for e.g. x86_64-linux-gnu are byte-for-byte
identical before and after the patch (or justify them not being so if they
aren't identical - I'd expect justifications of the form "this file has
line numbers in assertions that change").
There should not be any __x86_64__ conditionals in generic files; the
sysdeps structure should be used as appropriate instead.
Joseph S. Myers