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

[Roger Bivand]

On Mon, 29 Jun 2020, Iñaki Ucar wrote:

> 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).

Thanks, added R-forge revision 1021. The problem was caused by the 
addition of AC_LANG(C++) (about line 500, 11 June) in connection with 
preparations for macOS static builds; without AC_LANG(C++) Fedora runs 
configure OK. With AC_LANG(C++), Fedora needs CXXFLAGS set if using the R 
rpm (otherwise and other systems not).  CPPFLAGS were used for the C 
pre-processor.

Roger

>
>

-- 
Roger Bivand
Department of Economics, Norwegian School of Economics,
Helleveien 30, N-5045 Bergen, Norway.
voice: +47 55 95 93 55; e-mail: Roger.Bivand using nhh.no
https://orcid.org/0000-0003-2392-6140
https://scholar.google.no/citations?user=AWeghB0AAAAJ&hl=en