Support for RTools42 tool chain

[astamm]

Hi. As maintainer of the nloptr package, I worked with Tomas to make it ready when the next R release comes out. With it, the RTools42 toolchain will supersede the 40. In this new toolchain, they ship both libs and headers of external C/C++ libraries. However, when I use the R-CMD-Check script with os: windows-2022, r: devel, it complains about not finding the nlopt header as if the whole toolchain had not been loaded. GHA available here: https://github.com/astamm/nloptr/blob/master/.github/workflows/check-standard.yaml. I would be grateful if someone could give me some insight. Thanks.

[gaborcsardi]

Rtools42 support is now in v2-branch, coming to v2 soon.

[gaborcsardi]

This is in v2 now.

[github-actions]

This issue has been automatically locked. If you believe you have found a related problem, please file a new issue and include a link to this issue