Dear all, Thanks for clarifying the issue. Having support for a configure-time option would be great. In the meantime I have applied YunQiang Su's patch on 3.7/3.8 and snapshot in the package svn,
[ YunQiang Su ] * Enable FPXX by default on mips/mipsel (Closes: #826749) Thanks ! Pablo On Mon, 13 Jun 2016 16:34:42 +0000 Daniel Sanders <daniel.sand...@imgtec.com> wrote: > > -----Original Message----- > > From: Matthew Fortune > > Sent: 13 June 2016 16:55 > > To: YunQiang Su; Pablo Oliveira > > Cc: 826...@bugs.debian.org; Sylvestre Ledru; Daniel Sanders > > Subject: RE: clang: enable FPXX for o32 by default > > > > YunQiang Su <wzss...@gmail.com> writes: > > > On Fri, Jun 10, 2016 at 12:10 AM, Pablo Oliveira <pa...@sifflez.org> > > > wrote: > > > > Dear YunQiang Su, > > > > > > > > On Wed, 8 Jun 2016 23:49:17 +0800 YunQiang Su <wzss...@gmail.com> > > > wrote: > > > >> Package: src:llvm-toolchain-snapshot > > > >> > > > >> We are working on moving all packages mips/mipsel built with > > > >> fpxx-enabled by default. > > > >> > > > >> While, now fpxx is not enabled by default in clang. > > > >> So please apply the attached patch to 3.5/3.6/3.7/3.8/snapshot. > > > >> > > > >> About FPXX and the transaction, please see: > > > >> > > > >> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=825342 > > > > > > > > Are you sure it is ok to modify the default behavior of FPXXDefault > > > > only for Debian clang packages (this could lead to surprise and hard > > > > to track bugs for users) ? > > > > > > The clang guy in IMG told me that this the only way currently. > > > > > > > > > > > To me it makes more sense to: > > > > > > > > 1) either submit this patch upstream, so that every clang distribution > > > > has the same common behavior regarding FPXX > > > > > > I also prefer this way. > > > > We cannot do this as the topic we are discussing here is inherently a > > decision for distributions and not upstream. Please note the setting for > > this in GCC is a build time setting so upstream GCC does not set FPXX > > by default. Fedora or other distros can choose different compatibility > > levels that suit their user base and hence may not use FPXX. > > > > There is a longer term plan to get a build time configuration option into > > CLANG/LLVM but this will take time to plan and implement. When ready > > you can switch to it but there is no ETA. > > My plan on this is a bit of a compromise between these two positions so I > think I > should elaborate a little. I aim to collect all the distribution specific > behaviours > upstream and have each distribution use a configure-time option to pick > between > them. This allows people to cross compile to specific distributions and should > help limit any confusion caused by the configure-time option. > > One possible way of going about this is to have a mips-debian-linux-gnu > triple in > upstream clang that has all the Debian-specific behaviours and have Debian > use a > configure-time option to map mips-linux-gnu to mips-debian-linux-gnu. >
