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I just spent almost a day figuring out why Rcpp was failing to find its cpp compiler. It turns out that when I open up an R session normally, my path starts with 'c:\Rtools\bin;c:\Rtools\gcc-4.6.3\bin;' as it should, but when I spawn a session with nppToR, these first two items are missing. Weird, right?
Fortunately, I came across the
command in R and rtools politely tells me what the entire path should be during installation, too.
Anyway, I guess this could be a bug in nppToR? Like I said, I have a workaround, so it's not a problem for me right now.
Did this occur right after installing or upgrading the Rtools? if so NppToR must be re-launched. I don't believe that NppToR sets the path however it might have inherited an old version of the path, and R would inherit it from NppToR as windows copies environment variables and programs, and spawned programs only see the variables that were defined at the time of starting.
Nope, it wasn't immediately after upgrading Rtools. I have restarted the system since and whenever I forget to set the path, my rcpp code returns an error instead of compiling. I just checked Sys.getenv('PATH') to confirm that they are not there.
Thanks for a great tool!