[R-sig-Fedora] -specs=/usr/lib/rpm/redhat/redhat-hardened-ld woes

[Iñaki Ucar]

On Mon, 29 Jun 2020 at 11:24, Iñaki Ucar <iucar using fedoraproject.org> wrote:
>
> On Mon, 29 Jun 2020 at 10:21, Roger Bivand <Roger.Bivand using nhh.no> wrote:
> >
> > In the rgdal package, configure.ac has had : ${LDFLAGS=`"${RBIN}" CMD
> > config LDFLAGS`} at least since 2012, so picking up LDFLAGS known to the R
> > version installed. Very recently, users installing rgdal from source with
> > R installed from RPM are seeing problems, such as those reported in this
> > thread: https://stat.ethz.ch/pipermail/r-sig-geo/2020-June/028251.html
> >
> > The diagnosis by Bennet Fauber, that
> >
> > LDFLAGS='-specs=/usr/lib/rpm/redhat/redhat-hardened-ld'
> >
> > is the problem, that LDFLAGS='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now'
> > works OK, and that the -specs= conflict with autoconf has not been
> > resolved seems accurate to me (see also
> > https://developers.redhat.com/blog/2018/03/21/compiler-and-linker-flags-gcc/,
> > https://bugzilla.redhat.com/show_bug.cgi?id=1343892).
> >
> > I realise that the R RPM needs to follow RH/F standards, but has something
> > happened in the RPM ecosystem recently to poison the -spec/autoconf
> > relationship?
>
> Did something change in rgdal's flags from 1.5-10 to 1.5-12? Because
> the former installs fine. You can see in [1] that it fails since the
> last update.

I see that rgdal changed to C++ recently. The issue is in rgdal,
because the configure script is missing:

CXXFLAGS=`"${R_HOME}/bin/R" CMD config CXXFLAGS`

as indicated in Writing R Extensions (note that CPPFLAGS are *not*
CXXFLAGS; I say this because it's a common mistake).

-- 
Iñaki Úcar