On 10 September 2018 at 16:27, Τόλης Χαλκής wrote: | Dear all, | | I am developing a R package using RcppEigen on Ubuntu 18.04. Since update | 0.3.3.4.0 I get hundreds of warnings but if I add PKG_CXXFLAGS = | -Wno-ignored-attributes in Makevars the warnings disappear and the compile | time reduces a lot. | | devtools::check() gives the warning below: | | checking compilation flags in Makevars ... WARNING | Non-portable flags in variable 'PKG_CXXFLAGS': | -Wno-ignored-attributes | | | I know I can only address the flag via my local compiler options. But | should I mentioned it to the package README? Is there anything else I could | do to overcome the problem with the hundreds of warning messages for the | other users that install the package for the first time?
It is a common problem with Eigen and g++. But as you saw, you cannot solve it via PKG_CXXFLAGS. A better way is to use CXXFLAGS via ~/.R/Makevars as this remains local and does not add a non-portable flag to your package. Dirk PS FWIW I disagree with this 'no non-portable flags' choice by CRAN, but I just like you I don't get to make the rules. -- http://dirk.eddelbuettel.com | @eddelbuettel | e...@debian.org ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel
