Eu tenteiKnit HTML o seguinte arquivo Rmd:

---
title: "Untitled"
author: "Florian Privé"
date: "12 septembre 2016"
output: html_document
---

```{r fibCpp, engine='Rcpp'}
#include <Rcpp.h>

// [[Rcpp::export]]
int fibonacci(const int x) {
    if (x == 0 || x == 1) return(x);
    return (fibonacci(x - 1)) + fibonacci(x - 2);
}
```

Eu recebi o seguinte erro:

Building shared library for Rcpp code chunk...
Warning message:
l'exécution de la commande 'make -f "C:/PROGRA~1/R/R-33~1.1/etc/x64/Makeconf" -f "C:/PROGRA~1/R/R-33~1.1/share/make/winshlib.mk" SHLIB_LDFLAGS='$(SHLIB_CXXLDFLAGS)' SHLIB_LD='$(SHLIB_CXXLD)' SHLIB="sourceCpp_2.dll" WIN=64 TCLBIN=64 OBJECTS="file110c1d4643e9.o"' renvoie un statut 127 


Quitting from lines 11-18 (test.Rmd) 
Error in (function (file = "", code = NULL, env = globalenv(), embeddedR = TRUE,  : 
  Error 1 occurred building shared library.
Calls: <Anonymous> ... block_exec -> in_dir -> engine -> do.call -> <Anonymous>
Exécution arrêtée

Estou fazendo algo obviamente errado? É um problema relacionado ao Windows?

Informações ambientais desessionInfo()

R version 3.3.1 (2016-06-21)
Platform: x86_64-w64-mingw32/x64 (64-bit)
Running under: Windows >= 8 x64 (build 9200)

locale:
[1] LC_COLLATE=French_France.1252  LC_CTYPE=French_France.1252   
[3] LC_MONETARY=French_France.1252 LC_NUMERIC=C                  
[5] LC_TIME=French_France.1252    

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
 [1] magrittr_1.5    rsconnect_0.4.3 htmltools_0.3.5 tools_3.3.1     yaml_2.1.13    
 [6] Rcpp_0.12.7     stringi_1.1.1   rmarkdown_1.0   stringr_1.1.0   digest_0.6.10  
[11] evaluate_0.9   

O Rtools instala a verificação viadevtools::find_rtools()

[1] TRUE

Resultados deSys.getenv()['PATH']

## PATH                  C:\Program
##                       Files\R\R-3.3.1\bin\x64;C:\ProgramData\Oracle\Java\javapath;C:\Program
##                       Files\NVIDIA GPU Computing
##                       Toolkit\CUDA\v7.5\bin;C:\Program
##                       Files\NVIDIA GPU Computing
##                       Toolkit\CUDA\v7.5\libnvvp;;C:\Program Files
##                       (x86)\Intel\iCLS Client\;C:\Program
##                       Files\Intel\iCLS
##                       Client\;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\Intel\Intel(R) Management Engine
##                       Components\DAL;C:\Program
##                       Files\Intel\Intel(R) Management Engine
##                       Components\IPT;C:\Program Files
##                       (x86)\Intel\Intel(R) Management Engine
##                       Components\DAL;C:\Program Files
##                       (x86)\Intel\Intel(R) Management Engine
##                       Components\IPT;C:\Program Files
##                       (x86)\Skype\Phone\;C:\Users\Florian\.dnx\bin;C:\Program
##                       Files\Microsoft DNX\Dnvm\;C:\Program Files
##                       (x86)\NVIDIA
##                       Corporation\PhysX\Common;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\WindowsPowerShell\v1.0\;C:\Users\Florian\Anaconda3;C:\Users\Florian\Anaconda3\Scripts;C:\Users\Florian\Anaconda3\Library\bin;C:\Program
##                       Files
##                       (x86)\Java\jre1.8.0_101\bin\client;C:\texlive\2015\bin\win32