g++ error causes non-zero exit status for package installation

On 5 January 2019 at 09:14, William Dunlap via R-help wrote:
| You would get these errors ("R: file or directory not found, version: file
| or directory not found...") if you had a ~/.Rprofile file containing the
| line 'cat(version$version.string, sep="\n").

Well spotted -- very much so. That is bound to break use within src/Makevars
and alike. If you must do something in ~/.Rprofile either make it silent, or
make it conditional based on if (interactive()) { ...that_code_here... }

Interesting problem.  One way to workaround this startup issue with:

  PKG_LIBS = `$(R_HOME)/bin/Rscript -e "Rcpp:::LdFlags()"`

used by minqa:src/Makevars
(https://r-forge.r-project.org/scm/viewvc.php/pkg/minqa/src/Makevars?view=markup&root=optimizer),
could be to use something like:

  PKG_LIBS = `Rscript -e "cat('LDFLAGS:\n')" -e "Rcpp:::LdFlags()" |
grep -A 999 "LDFLAGS:" | grep -v "LDFLAGS:"`

and analogously for src/Makevars.win.

But in the bigger picture, maybe there's room for an R/Rscript option
to silence all R startup stdout and/or stderr output?  For example,

  Rscript --quiet-startup -e "Rcpp:::LdFlags()"`

/Henrik

PS. It's probably better to output to stderr in .Rprofile, e.g. by
always using message() instead of cat(). However, that cannot be
assumed to always be the case.

Dirk

--
http://dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org

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