On Thu, Aug 16, 2018 at 7:25 PM Zbigniew Jędrzejewski-Szmek <
zbys...@in.waw.pl> wrote:

> On Thu, Aug 16, 2018 at 02:14:41PM +1000, Amit Saha wrote:
> > Hi Igor,
> >
> > On Fri, Aug 10, 2018 at 4:33 PM Igor Gnatenko <
> > ignatenkobr...@fedoraproject.org> wrote:
> >
> > > Hello everyone,
> > >
> > > 0.27.x is released long time ago, but I never got time for updating
> it. It
> > > obviously involves SONAME change.
> > >
> > > The good thing about this release is that it breaks only things in
> runtime
> > > and only one function changed signature (for building) which nobody
> uses
> > > anyway.
> > >
> > > I'm going to update library as soon as I get time (possibly on this
> > > weekend if no all dependent packages build fine). I will handle all
> > > rebuilds myself, just sending a notice.
> > >
> > > List of affected packages is below.
> > > Maintainers by package:
> > > R-git2r              qulogic
> > > geany-plugins        dmaphy ohaessler pingou
> > > ghc-bdcs-api         clumens
> > > ghc-gi-ggit          dshea
> > > git-evtag            ignatenkobrain walters
> > > gitg                 ankursinha ignatenkobrain nacho pwalter
> > > julia                nalimilan
> > > kf5-ktexteditor      dvratil jgrulich rdieter than
> > > libgit2-glib         ignatenkobrain kalev nacho pwalter
> > > python-pygit2        pwalter
> > > rubygem-rugged       ignatenkobrain ktdreyer tdawson
> > > rust-exa             ignatenkobrain
> > > rust-pretty-git-prompt ignatenkobrain ttomecek
> > > subsurface           pingou
> > >
> > > Packages by maintainer:
> > > ankursinha gitg
> > > clumens    ghc-bdcs-api
> > > dmaphy     geany-plugins
> > > dshea      ghc-gi-ggit
> > > dvratil    kf5-ktexteditor
> > > ignatenkobrain git-evtag gitg libgit2-glib rubygem-rugged rust-exa
> > > rust-pretty-git-prompt
> > > jgrulich   kf5-ktexteditor
> > > kalev      libgit2-glib
> > > ktdreyer   rubygem-rugged
> > > nacho      gitg libgit2-glib
> > > nalimilan  julia
> > > ohaessler  geany-plugins
> > > pingou     geany-plugins subsurface
> > > pwalter    gitg libgit2-glib python-pygit2
> > > qulogic    R-git2r
> > > rdieter    kf5-ktexteditor
> > > tdawson    rubygem-rugged
> > > than       kf5-ktexteditor
> > > ttomecek   rust-pretty-git-prompt
> > > walters    git-evtag
> > >
> >
> > Thanks for your work. Just noticed that julia  hasn't been built
> > succesfully (
> https://koji.fedoraproject.org/koji/packageinfo?packageID=19172)
> > .  Seems to have failed with: "cc1plus: error: unrecognized command line
> > option '-mcet'"
> >
> > This is currently an issue in Fedora Scientific building. What would be
> the
> > path forward here?
>
> Drop '-mcet'? It's a bit hard to find docs for it, but [1] says:
> """-mcet -fcf-protection enables support for the Control-Flow
> -Enforcement > Technology (CET) feature in future Intel CPUs. This
> -involves the
>  generation of additional NOPs, which are ignored by the current
>  CPUs. It is recommended that you enable this flag now, to detect any
>  issues caused by them (e.g., interactions with dynamic
>  instrumentation frameworks, or performance issues)."""
>
> It sounds like it's not something that is particularly needed at this
> time.
>

https://fedoraproject.org/wiki/Changes/HardeningFlags28 seems to suggest
that this was implemented explicitly?

I am way out of touch, but a quick search for `mcet` in the package SRPM
and the source tarball from (https://src.fedoraproject.org/rpms/julia),
didn't show up `mcet` being explicitly added either.




>
> The build log also has a lot of:
> /usr/include/features.h:381:4: warning: #warning _FORTIFY_SOURCE requires
> compiling with optimization (-O) [-Wcpp]
>  #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
>     ^~~~~~~
> This sounds like the package is not being built with the distro flags.
>
> Zbyszek
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