[Rd] Using custom R_LIBS with R CMD install

[Dirk Eddelbuettel]

On 8 February 2012 at 20:05, Uwe Ligges wrote:
| Anyway, this won't work under a Windows shell, I believe. At least, I do 
| not know how to set an env variable and run RCMD INSTALL in a Windows 
| shell as a one liner - independent of R.

FWIW this issue was addressed by Oleg years ago in cfunction() in his inline
package -- by using Sys.setenv() prior to calling system().  This works
in a cross-platform way, avoiding the need for special cases.

Dirk

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