Dirk Eddelbuettel: RcppSpdlog 0.0.25 on CRAN: Microfix

Version 0.0.25 of RcppSpdlog arrived
on CRAN right now, and will be
uploaded to Debian and built for r2u shortly along with a
minimal refresh of the documentation site. RcppSpdlog
bundles spdlog, a
wonderful header-only C++ logging library with all the bells and
whistles you would want that was written by Gabi Melman, and also includes fmt by Victor Zverovich. You can learn
more at the nice package
documention site.

This release fixes a minuscule cosmetic issue from the previous
release a week ago. We rely on two #defines that R sets to
signal to spdlog that we
are building in the R context (which matters for the R-specific logging
sink, and picks up something Gabi added upon my suggestion at
the very start of this package). But I use the same
#defines to now check in Rcpp that we are building with R and, in
this case, wrongly conclude R headers have already been installed so Rcpp (incorrectly) nags about that. The
solution is to add two #undefine and proceed as normal
(with Rcpp controlling and taking
care of R header includion too) and that is what we do here. All good
now, no nags from a false positive.

The NEWS entry for this release follows.

Changes in
RcppSpdlog version 0.0.25 (2026-01-15)

• Ensure #define signaling R build (needed with spdlog)
  is unset before including R headers to not falsely triggering message
  from Rcpp

Courtesy of my CRANberries, there
is also a diffstat
report detailing changes. More detailed information is on the RcppSpdlog
page, or the package documention
site.

This post by Dirk
Eddelbuettel originated on his Thinking inside the box
blog. If you like this or other open-source work I do, you can sponsor me at
GitHub.