Install multiple versions of Rtools

The $(WIN) within the BINPREF is automatically expanded to the correct
architecture. This is definitely possible as we have it working currently
in Rcpp, devtools, and RStudio.


On Sat, Oct 1, 2016 at 8:29 PM, JJ Allaire <jj.allaire at gmail.com> wrote:

You can do the following:

1) Add the Rtools bin directory (e.g. C:\Rtools33\bin) to the PATH (so it
can find make, etc.)

2) Define  BINPREF environment variables as seen here:
https://github.com/RcppCore/Rcpp/blob/master/R/Attributes.R#L766-L767

Note that creating a valid path to the root Rtools directory is a bit
finicky so we have this helper function: https://github.com/R
cppCore/Rcpp/blob/master/R/Attributes.R#L780-L790. Here's a C++ version
of the same function that we use in RStudio: https://github.com/rs
tudio/rstudio/blob/db703b6aff4f4136532e99bb1f2c081fe77f5601/
src/cpp/core/r_util/RToolsInfo.cpp#L39-L46




On Sat, Oct 1, 2016 at 8:06 PM, G?bor Cs?rdi <csardi.gabor at gmail.com>
wrote:

Hi All,

I would like to have both rtools 3.3 and 3.4 on the same machine, one
in c:\rtools33, the other in c:\rtools34.

I managed to do it via modifying the RHOME/etc/ARCH/Makeconf files. Is
there a better way, by simply setting environment variables?

Thanks much!
Gabor