Tests as for the main fedora-clang checks but using release candidates of
LLVM 17.0.0, including using flang-new as the Fortran compiler.
Other details as for
https://www.stats.ox.ac.uk/pub/bdr/Rconfig/r-devel-linux-x86_64-fedora-clang .

The library directory used was populated by packages installed with these
compilers.  With the exceptions of

V8 -- installed with GCC using the system libv8
BioC packages Rdisop and mzR which were patched (needed even for clang 16).
BioC packages DiffBind EBImage GeneticsPed Rsamtools SeqArray which 
have C++ header conflicts and were installed with clang 16.

Packages

BTSR BayesFM CohensdpLibrary RMixtComp RMixtCompIO RefBasedMI WaverideR
astrochron bgw deTestSet flsa frailtypack graphseg ldat lvec norm2
penalizedLDA rbedrock reclin restriktor rlibkriging vein

failed to install, directly or because of packages they depend on.

Package htdp uses exceessive (over 50GB) of VM in the attempt to 
compile its Fortran.


'flang-new' is an under-development Fortran 2018 compiler whose sources are
part of LLVM and is an optional part of the build.  Binary distributions of
LLVM are avaiable from 

https://github.com/llvm/llvm-project/releases

which may contain flang -- the Windows builds are incompatible with the
toolchain used to build R.

The principal inteest in this compiler is that it allows R to be built for 
Windows on ARM.  So we have been exploring which packages can currently be
installed using the compiler on a more readily available platform.

Further details on installation issues at
https://www.stats.ox.ac.uk/pub/bdr/clang17/00README.txt