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r - Rcpp 警告：未找到为 R 构建 C++ 代码所需的工具

问题描述

我刚刚使用了 Rcpp

Rcpp::sourceCpp('D:\\6_R_tool\\04_track_cluster\\line_cluster_c.cpp')

并发生错误：几天前它工作正常，但今天突然失败。

我R version的是4.0.2。

C:/PROGRA~1/R/R-40~1.2/etc/x64/Makeconf:244: warning: overriding commands for target `.m.o'
C:/PROGRA~1/R/R-40~1.2/etc/x64/Makeconf:237: warning: ignoring old commands for target `.m.o'
"C:/rtools40/mingw64/bin/"g++ -std=gnu++11  -I"C:/PROGRA~1/R/R-40~1.2/include" -DNDEBUG   -I"C:/Users/justin/Documents/R/win-library/4.0/Rcpp/include" -I"D:/6_R_tool/04_track_cluster"        -O2 -Wall  -mfpmath=sse -msse2 -mstackrealign -c line_cluster_c.cpp -o line_cluster_c.o
process_begin: CreateProcess(NULL, basename sourceCpp_2.dll .dll, ...) failed.
process_begin: CreateProcess(NULL, basename sourceCpp_2.dll .dll, ...) failed.
process_begin: CreateProcess(NULL, basename sourceCpp_2.dll .dll, ...) failed.
"zline_cluster_c.o" was unexpected at this time.
make: *** [sourceCpp_2.dll] Error 255
Error in Rcpp::sourceCpp("D:\\6_R_tool\\04_track_cluster\\line_cluster_c.cpp") : 
  Error 1 occurred building shared library.

WARNING: The tools required to build C++ code for R were not found.

Please download and install the appropriate version of Rtools:

http://cran.r-project.org/bin/windows/Rtools/

可能是什么问题，我该怎么办？

标签： rrcpprcpp11

解决方案

可以通过输入命令来解决RGui。

writeLines('PATH="${RTOOLS40_HOME}\\usr\\bin;${PATH}"', con = "~/.Renviron")

我注意到路径已被重置。看到它Sys.which("make")。

新路径是"C:\\rtools40\\usr\\bin\\make.exe"，在我解决问题之前，它的值肯定是不同的。

但谁能告诉我为什么？谢谢你。

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