R: Is Rtools installed?

rtools_path {pkgbuild} | R Documentation

## Is Rtools installed?

### Description

To build binary packages on windows, Rtools (found at https://CRAN.R-project.org/bin/windows/Rtools/) needs to be on the path. The default installation process does not add it, so this script finds it (looking first on the path, then in the registry). It also checks that the version of rtools matches the version of R. `has_rtools()` determines if Rtools is installed, caching the results. Afterward, run `rtools_path()` to find out where it's installed.

### Usage

    rtools_path()

    has_rtools(debug = FALSE)

    check_rtools(debug = FALSE)

### Arguments

`debug` | If `TRUE`, will print out extra information useful for debugging. If `FALSE`, it will use result cached from a previous run.

### Value

Either a visible `TRUE` if rtools is found, or an invisible `FALSE` with a diagnostic `message()`. As a side-effect the internal package variable `rtools_path` is updated to the paths to rtools binaries.

### Acknowledgements

This code borrows heavily from RStudio's code for finding Rtools. Thanks JJ!

### Examples

    has_rtools()

[Package pkgbuild version 1.0.2 Index]