On 4/26/21 12:18 PM, Florian Weimer wrote:
* Jeff Law:
There are cases where Clang is the better choice and other cases where
GCC is the better choice. The upstream projects are in the best
position to make such decisions for their projects and the Fedora
maintainers are in the best position to bring that decision into
Fedora.
All Clang-preferring upstreams I know use their own build, downloaded
when the development environment is set up. The system Clang compiler
would still be not blessed by upstream. Given that people who build
with the system compiler on Linux are more likely to use GCC than Clang,
switching to a system Clang compiler may not actually result in a
more-tested build environment. Unless there is a plan to add
firefox-clang, chromium-clang &c packages, but I really can't see that
happening.
I'm not saying that the proposed Change is wrong, it's just that this
particular argument based on upstream preference is not very compelling
because upstreams do not actually prefer to use Clang system compilers.
I don't really want to get in into a debate about specific packages, but
your general point that upstream preference may not be best for Fedora is a
good one, and it's why the proposal was changed from "packagers should use
upstream preference" to "packagers should use best judgement".
Given that the whole point of this proposal is that packagers should make
their own decisions, maybe the proposal owners shouldn't be making suggestions
for which packages might be better off with a different compiler. I
will consider changing this in the proposal.
-Tom
Thanks,
Florian
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