STRICT_R_HEADERS

[mattfidler]

Dear maintainer,

Please see the problems shown on
https://cran.r-project.org/web/checks/check_results_PreciseSums.html.

Specifically, please see the Strict additional issue.

Compilation fails with R_USE_STRICT_R_HEADERS=true, which defines
STRICT_R_HEADERS to 1 which removes

• the legacy definition of PI (use POSIX's M_PI, available in R fer ever).
• the RS.h declarations for Calloc, Realloc, Free (use R_ forms i
  available since R 3.4.0).

The aim is to clean the namespace: in particular having a definition
for Free has conflicted with some packages' C++ code.

It is planned that STRICT_R_HEADERS=1 will become the default for 4.5.0,
which in particular makes it necesssary that all CRAN packages with many
strong reverse dependencies compile/install ok with the new default.

Your package is among the ones with many strong reverse dependencies.
We would thus really appreciate if you could provide a new version of
your package as soon as possible which checks ok with
STRICT_R_HEADERS=1.

You can verify that your package checks ok with STRICT_R_HEADERS=1 via R
CMD check --as-cran using a current version of R-devel.

Please correct before 2024-09-20 to safely retain your package on CRAN.