Rtools not being detected by R

问题:

Update:

I've written a brief walkthrough guide to installing Rtools on windows.

Original:

I am trying to build an R package using RStudio on Windows 7. When I attempt to build the package via RStudio's Build panel I receive:

WARNING: Rtools is required to build R packages but is not currently installed. Please download and install the appropriate version of Rtools before proceeding:  http://cran.rstudio.com/bin/windows/Rtools/ 

Loading library(devtools) and running find_rtools(T) gives:

Scanning path... ls : F:\Rtools\bin\ls.exe  Scanning registry... Found F:/Rtools for 3.1  VERSION.txt Rtools version 3.1.0.1936  [1] TRUE 

The Path variable is set as:

F:\Rtools\bin;F:\Rtools\gcc-4.6.3\bin;F:\Rtools\perl\bin;F:\Rtools\MinGW\bin;F:\Program Files\R\R-3.0.2\bin\x64;F:\Program Files (x86)\HTML Help Workshop;F:\Program Files\MiKTeX 2.9\miktex\bin\x64\;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86)\Common Files\Microsoft Shared\Windows Live;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files\Microsoft Network Monitor 3\;F:\Program Files (x86)\QuickTime\QTSystem\ 

I've also restarted several times, yet the error persists. I'm a bit confused as to why this is occurring.

Output when R access system variable Path:

> Sys.getenv()['PATH']                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  PATH  "F:\\Program Files\\R\\R-3.0.2\\bin\\x64;F:\\Rtools\\bin;F:\\Rtools\\gcc-4.6.3\\bin;F:\\Rtools\\perl\\bin;F:\\Rtools\\MinGW\\bin;F:\\Program Files\\R\\R-3.0.2\\bin\\x64;F:\\Program Files (x86)\\HTML Help Workshop;F:\\Program Files\\MiKTeX 2.9\\miktex\\bin\\x64\\;C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common;C:\\Program Files\\Common Files\\Microsoft Shared\\Windows Live;C:\\Program Files (x86)\\Common Files\\Microsoft Shared\\Windows Live;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Program Files (x86)\\Windows Live\\Shared;C:\\Program Files\\Microsoft Network Monitor 3\\;F:\\Program Files (x86)\\QuickTime\\QTSystem\\"  

The R version I am using is: R version 3.0.2 (2013-09-25) -- "Frisbee Sailing."

The Rstudio Version I am using is: 0.97.551. When I check for updates, I'm told that this is the latest patch.

> Sys.which("ls.exe")                    ls.exe  "F:\\Rtools\\bin\\ls.exe"  > Sys.which("gcc.exe") gcc.exe       ""  

回答1:

Turns out when I installed RTools I left out the R 2.15.x+ toolchain option in the installation, which lead to the gcc never being installed. Hopefully, this post will serve as a diagnostic guide if RStudio fails to register RTools.

Thank you everyone for your help.

回答2:

The RTools install on Windows doesn't select the C compiler to include by default. I ran the install a few times blindly clicking through and got this error. I reran the installer and selected/included the 32bit and 64bit C compilers. Problem solved.

回答3:

It may as well be added that if you don't have admin rights on your computer the installation of Rtools will fail due to some missing registry permissions.

Took me quite some time to figure that out because if you install Rtools via R you won't see this alert.

So better download the .exe-file, install it as admin and tick the boxes mentioned above to get Rtools working properly.

文章来源: Rtools not being detected by R