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Add details so that users only use the default configuration in resource constrained settings and use multi-core compiliation. Also, highlight the need to match the targeted R version and rtools versions.
blowekamp
reviewed
Apr 14, 2026
| On Windows requires [rtools](https://cran.r-project.org/bin/windows/Rtools/) installation and setting the `RTOOLS_HOME` environment variable. For example: | ||
| On Windows requires [rtools](https://cran.r-project.org/bin/windows/Rtools/) installation and setting the `RTOOLS_HOME` environment variable. Install the rtools version that matches the targeted R version. For example, using the R4.5.3 and rtools4.5 combination, set the enviornment variable to: | ||
| ```R | ||
| Sys.setenv(RTOOLS_HOME = "C:/rtools45") |
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I am not sure this is correct or necessary. When the R package is built certain env variable are set, we are using these a little but and could do better to use them in the scripts.
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Setting the RTOOLS_HOME is required as it changes per the rtools version (enabling multiple rtools version on same machine). The matching with the R major.minor version is required per the rtools documentation.
blowekamp
approved these changes
Apr 14, 2026
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Add details so that users only use the default
configuration in resource constrained settings and use multi-core compiliation. Also, highlight the
need to match the targeted R version and rtools
versions.