I don't think this has anything to do with Fortran.
The full warning message is presumably like
Warning: S3 methods . . . were declared in NAMESPACE but not found
which according to google-fu happens if you are declaring methods from a
package that isn't loaded, in this case possibly dplyr.
Hi all,
For the R package bujar, the warnings below were generated on CRAN's Windows
systems. The package uses some Fortran subroutines. I would appreciate any
advice to eliminate the warnings. By the way, similar warnings were generated
to some unrelated R packages as well:
