Compilation requires Makevars

[hadley]

PKG_CPPFLAGS=-DSTRICT_R_HEADERS

Otherwise R's realloc macro conflicts with the Realloc function in rapidjson

Is that required for this package, or packages which depend on this?

For example, in my geojsonsf (dev only atm) I've specified the // [[Rcpp::depends(rapidjsonr)]] to appear before the call to #include <Rcpp.h> to get around the issue.

Whereas if I use your suggestion in the Makevars file there's no requirement for my solution.

[hadley]

I think it's required for all packages that depend on it. I couldn't get my package to compile without it.