Installation of Rtools. Can't fnd C++ compiler

Question

I want to use a program called Stan within R. To do so I need to install Rtools to get the C++ compiler. According to the Stan website, I am to check the box for editing path upon installation of Rtools.

For some reason R can't seem to find the compiler.

Sys.getenv("PATH") [1] "c:\Rtools\bin;c:\Rtools\mingw_64\bin;c:\Rtools\bin;c:\MiKTeX\miktex\bin;c:\R\R-3.2\bin\i386;c:\windows;c:\windows\system32;C:\Users\a3988\AppData\Local\Microsoft\WindowsApps;"

system('g++ -v') Warning message: running command 'g++ -v' had status 127

Sys.which("g++") g++ "c:\Rtools\mingw_64\bin\G__~1.EXE"

Can anybody help? I am using R-version: 3.4.2 Rtools34 Windows10

...in other words, are the gcc compilers installed on your computer? — user 123342, Dec 05 '17 at 09:45
Have a look at this answer [link](https://stackoverflow.com/questions/14865976/r-packages-fail-to-compile-with-gcc) — user 123342, Dec 05 '17 at 09:48
I get:Error: object 'gcc' not found. Isn't the gcc part of the Rtools? — Kristin Windsland, Dec 05 '17 at 13:11
You need to install the gcc compilers link [http://preshing.com/20141108/how-to-install-the-latest-gcc-on-windows/] — user 123342, Dec 05 '17 at 13:12
The link didn't work but google led me to this site: http://mingw-w64.org/doku.php I installed it and restarted R but got the same response:gcc not found. — Kristin Windsland, Dec 05 '17 at 13:27
You need to set the path to the compilers, so that R knows where to look...see answer below. — user 123342, Dec 05 '17 at 13:28

score 0 · Answer 1 · answered Dec 05 '17 at 13:26

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You first need to install the gcc compilers and then you can install Rtools: https://github.com/stan-dev/rstan/wiki/Install-Rtools-for-Windows.

answered Dec 05 '17 at 13:26

user 123342

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I uninstalled both the compiler AND Rtools, then reinstalled the compiler and then reinnstalled Rtools adding the location of the compiler to the path. I still get "gcc no found". – Kristin Windsland Dec 05 '17 at 14:05
Your problem is installing the gcc compilers, not Rtools. – user 123342 Dec 05 '17 at 15:16
...impossible to give guidance without detailed description of what you have tried to do – user 123342 Dec 05 '17 at 15:17

Installation of Rtools. Can't fnd C++ compiler

1 Answers1