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Re: [XEN PATCH v8 11/47] build: fix enforce unique symbols for recent clang version
- To: Anthony PERARD <anthony.perard@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Tue, 7 Dec 2021 11:23:26 +0100
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Tue, 07 Dec 2021 10:23:39 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 25.11.2021 14:39, Anthony PERARD wrote:
> clang 6.0 and newer behave like gcc in regards for the FILE symbol, so
> only the filename rather than the full path to the source file.
>
> clang 3.8.1-24 (in our debian:stretch container) and 3.5.0-10
> (in our debian:jessie container) do store the full path to the source
> file in the FILE symbol.
>
> This means that we also need to check clang version to figure out
> which command we need to use to redefine symbol.
>
> I don't know which version of clang change behavior, we will guess
> 4.0.
When I did this earlier work, it was clang5 that I used. Which would seem
to mean the change in behavior was in version 6.
Jan
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