v3.4.0-2 incompatible with gcc 7.1

Thank you for correcting my misunderstandings, Professor. Compiling from
source did the trick, and I'll be following up with the arch maintainers
about addressing the issue on their end.

Best,

Chris

On Fri, 23 Jun 2017 at 11:02 Prof Brian Ripley <ripley at stats.ox.ac.uk>
wrote:

R is compatible with GCC 7.1 !  New compiler versions are tested, as
well as those under development for the major compilers.  (A few
packages still fail with GCC 7.1, but that was reported to their
maintainers months ago.)

Just follow the instructions in the R-admin manual to install from

sources.

OTOH, ' v3.4.0-2 ' is not an R version number, so I think you are
referring to binary distributions on your Linux distro, which are not
the responsibility of 'Rcore or Rdevel' (whatever they are).

On 23/06/2017 14:40, Chris Cole wrote:

I'm on Arch Linux kernel version 4.11.6-1 using gcc version 7.1.1:

gcc --version
gcc (GCC) 7.1.1 20170516

I have installed R through the arch package manager pacman and when I
attempt to initiate it, R crashes stating a missing dependency:

/usr/lib64/R/bin/exec/R: error while loading shared libraries:
libgfortran.so.3: cannot open shared object file: No such file or

directory

I thought that maybe a symlink was improperly placed in the package so

I

looked in /usr/lib to try to find the offending library.

ls -halt /usr/lib/libgfortran.so.*
lrwxrwxrwx 1 root root 20 May 16 03:01 /usr/lib/libgfortran.so.4 ->
libgfortran.so.4.0.0
-rwxr-xr-x 1 root root 7.1M May 16 03:01 /usr/lib/libgfortran.so.4.0.0

Simply symlinking libgfortran.so.4.0.0 to libgfortran.so.3 did not

work,

and after some questioning on SO (

https://stackoverflow.com/questions/44658867/r-v3-4-0-2-

unable-to-find-libgfortran-so-3-on-arch

)

it seems that gfortran 7 has bumped the .so object to version 4.

It seems that a relatively straightforward workaround for the present

would

be to install a legacy version of gcc alongside the current version.

I'm wondering if Rcore or Rdevel are moving towards being able to

handle

the new compiler version any time soon, and if there are any other
workarounds than having two versions of the compiler.

Thanks.

Chris

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--
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford

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