设置Rtools时无法重写PATH

Question

In my windows 10, the directory of Rtools cannot be correctly set. My rtools is installed in D drive (D:/Rtools) and I've done these:

1. I manually set the PATH in the Environmental Variables... : screenshot for PATH
2. I changed the Makeconf : BINPREF ?= D:/Rtools/mingw_64/bin/

However, everytime restarting R, I get an Rtool path directing to C drive ( C:\\\\Rtools\\\\bin; ):

Sys.getenv("PATH")
#> [1] "C:\\Rtools\\bin;D:\\R\\R-stable\\bin\\x64;d:\\Rtools\\bin;d:\\Rtools\\mingw_64\\bin;d:\\Rtools\\mingw_32\\bin;C:\\ProgramData\\Oracle\\Java\\javapath;D:\\Program Files\\ImageMagick-7.0.7-Q16;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;D:\\Program Files\\Git\\cmd;C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common;D:\\qpdf-6.0.0\\bin;D:\\qpdf-6.0.0\\lib;C:\\WINDOWS\\system32;C:\\WINDOWS;C:\\WINDOWS\\System32\\Wbem;C:\\WINDOWS\\System32\\WindowsPowerShell\\v1.0\\;C:\\Program Files (x86)\\Common Files\\Seagate\\SnapAPI\\;D:\\Program Files\\MiKTeX 2.9\\miktex\\bin\\x64\\;D:\\Program Files (x86)\\WinMerge;d:\\Rtools\\bin;d:\\Rtools\\mingw_64\\bin;D:\\Ruby24-x64\\bin;D:\\Ruby25-x64\\bin;C:\\Users\\Yue Hu_local\\AppData\\Local\\Microsoft\\WindowsApps;"

Everything else looks fine and R seems able to find the rtools and relevants, while the packages cannot be compiled successfully from the source:

devtools::find_rtools()
#> [1] TRUE
Sys.which("ls.exe")
#>                    ls.exe 
#> "d:\\Rtools\\bin\\ls.exe"
Sys.which("gcc.exe")
#>                              gcc.exe 
#> "d:\\Rtools\\mingw_64\\bin\\gcc.exe"

Answer 1

I think that the current version of RTools sets the path to c:\\Rtools\\bin no matter what you choose when you install RTools. I believe this is done in Renviron.site in the etc folder of your R distribution. You could edit this file and give it the correct path. (Alternatively, if the correct version of Rtools is already in your path (ie you elected to modify the system path when you installed it) then you might get this to work by simply commenting-out (put a # in front of) the PATH= statement in Renviron.site.

Does anyone know where to report this as a possible bug in the installation for RTools?