On 08/02/2023 00:13, Gábor Csárdi wrote:
As preparation for the next release, I am trying to compile R devel on
RHEL / CentOS 7, which is still supported by RedHat until 2024 June.
There are two issues.
One is that the libcurl version in CentOS 7 is quite old, 7.29.0, and
R devel now requires 7.32.0, since 83715 about a week ago. This
requirement is here to stay for R 4.3.0, right?
Unless we revert it. The comment in the manual says
@c libcurl 7.32.0 was released in Aug 2013
and Centos 7 was released in 2014-07-07, 11 months later. Do they
really never security-patch libcurl?
The second is that the recommended packages are now installed with R
CMD INSTALL --use-C17, which fails on CentOS 7 with
begin installing recommended package MASS
* installing *source* package 'MASS' ...
** package 'MASS' successfully unpacked and MD5 sums checked
** using non-staged installation
** libs
Error: C17 standard requested but CC17 is not defined
* removing '/root/R-devel/library/MASS'
CentOS 7 has GCC 4.8.5, which does not have a -std=gnu17 option.
However the commit message of this change in commit 83566 hints that
this requirement might be temporary. Hence my questions.
It is temporary -- needed for survival (now updated) and mgcv (awaited).
However,
1) You should be able to set
CC17="gcc -std=gnu11"
in config.site, as C17 is a bug-fixed C11.
2) Centos 7 has later compilers available, and people are going to need
them for C++. The manual says
... later compilers are available: for RHEL/Centos 7 look for
‘devtoolset’.
Is the C17 requirement temporary or it will be a requirement for R 4.3.0?
Should I expect any problems if I remove the --use-C17 flag for
installing the recommended packages?
Not with that compiler.
There are a lot of R users still on RHEL 7, so it would be great to
know what to expect for the next release.
an D. Ripley, rip...@stats.ox.ac.uk
Emeritus Professor of Applied Statistics, University of Oxford
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