On 05/06/20 20:30 +0200, Igor Raits wrote:
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On Fri, 2020-06-05 at 13:25 -0400, Robert Marcano via devel wrote:
On 6/5/20 12:31 PM, Jeff Law wrote:
> On Fri, 2020-06-05 at 16:23 +0000,
> devel-request@xxxxxxxxxxxxxxxxxxxxxxx wrote:
> > Date: Fri, 5 Jun 2020 11:15:39 -0500
> > From: Steven Munroe <munroesj52@xxxxxxxxx>
> > Subject: Re: Fedora 33 System-Wide Change proposal:
> > CompilerPolicy
> > Change
> > To: devel@xxxxxxxxxxxxxxxxxxxxxxx
> > Message-ID:
> > <
> > CAPrKuAohVppTu_B4GDoxSMW=KzXTq_m13utpOZocCOK0xOzzcw@xxxxxxxxxxxxxx
> > >
> > Content-Type: text/plain; charset="UTF-8"
> >
> > I would also add that Clang/LLVM is missing some of the newer C
> > language revisions at least for the pppc64le target.
> >
> > Both IEEE/ISO _Float128 and _Decimalxx support is missing. Ie
> > the
> > type is not supported or if supported basic arithmetic and math.h
> > support is missing. Also finding bugs for in-line assembly and
> > missing
> > constraints needed to work around the missing language features.
> >
> > Also Clang's poor support for constant folding makes using
> > __int128
> > (and vector __int128) harder than it needs to be.
> >
> > This is a significant impact for enabling my project (PVECLIB)
> > for
> > Clang. As-is a number of project features have been disabled for
> > Clang.
> Clearly your upstream project is still using GCC then and as such
> the Fedora
> package would continue to use GCC.
>
> We're not changing the default here. We're just removing the anti
> Clang/LLVM
> policy and allowing upstreams to select the compiler that best
> suits their needs.
> Clearly Clang/LLVM is not the right choice for your project.
This looks fine, but why not add to the policy that for upstream
projects that have no defined preference of compiler, the package
have
to use GCC in order to have at least some standard and not let the
packager bias be the rule, unless some measurable advantage is found
to
use LLVM
This has been discussed in this thread, Jeff wants to keep GCC a
default choice for packages. Just to have an option to select Clang in
some cases.
I don't think the change proposal makes that entirely clear, but as
long as the changes to the packaging guidelines are clear, that's
fine.
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