Question

我正在尝试使用sourceCpp和RcppArmadillo来编译一些c ++代码。我在Ubuntu，Rcpp 0.12.10和RcppArmadillo 0.7.800.2.0上使用R 3.3.3。文件armatest.cpp完全被删除了。

// [[Rcpp::depends(RcppArmadillo)]]
#include <RcppArmadillo.h>

using namespace arma; 
using namespace Rcpp;

int one() {
  return 1;
}

当我尝试从Rstudio服务器中编译它时，我收到以下编译错误：

> Rcpp::sourceCpp("armatest.cpp", verbose = TRUE, rebuild=TRUE)

Generated extern "C" functions 
--------------------------------------------------------


#include <Rcpp.h>

Generated R functions 
-------------------------------------------------------

`.sourceCpp_1_DLLInfo` <- dyn.load('/tmp/Rtmp3oSZra/sourceCpp-x86_64-pc-linux-gnu-0.12.10/sourcecpp_47d41ae4918/sourceCpp_10.so')


rm(`.sourceCpp_1_DLLInfo`)

Building shared library
--------------------------------------------------------

DIR: /tmp/Rtmp3oSZra/sourceCpp-x86_64-pc-linux-gnu-0.12.10/sourcecpp_47d41ae4918

/usr/lib/R/bin/R CMD SHLIB -o 'sourceCpp_10.so' --preclean  'armatest.cpp'  
g++ -I/usr/share/R/include -DNDEBUG    -I"/home/amercer/R/x86_64-pc-linux-gnu-library/3.3/Rcpp/include" -I"/home/amercer/R/x86_64-pc-linux-gnu-library/3.3/RcppArmadillo/include" -I"/home/amercer"   -fpic  -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c armatest.cpp -o armatest.o
g++ -shared -L/usr/lib/R/lib -Wl,-z,relro -o sourceCpp_10.so armatest.o -llapack -lblas -lgfortran -lm -lquadmath -L/usr/lib/R/lib -lR
/usr/share/R/share/make/shlib.mk:6: recipe for target 'sourceCpp_10.so' failed
Error in Rcpp::sourceCpp("armatest.cpp", verbose = TRUE, rebuild = TRUE) : 
  Error 1 occurred building shared library.

但是，当我从命令行（Rstudio-server之外）运行R，然后重试时，它编译得很好。

>Rcpp::sourceCpp("armatest.cpp", verbose = TRUE, rebuild=TRUE)

Generated extern "C" functions
--------------------------------------------------------


#include <Rcpp.h>

Generated R functions
-------------------------------------------------------

`.sourceCpp_1_DLLInfo` <- dyn.load('/tmp/RtmptRileh/sourceCpp-x86_64-pc-linux-gnu-0.12.10/sourcecpp_1966315b9edd0/sourceCpp_4.so')


rm(`.sourceCpp_1_DLLInfo`)

Building shared library
--------------------------------------------------------

DIR: /tmp/RtmptRileh/sourceCpp-x86_64-pc-linux-gnu-0.12.10/sourcecpp_1966315b9edd0

/usr/lib/R/bin/R CMD SHLIB -o 'sourceCpp_4.so' --preclean  'armatest.cpp'
g++ -I/usr/share/R/include -DNDEBUG    -I"/home/amercer/R/x86_64-pc-linux-gnu-library/3.3/Rcpp/include" -I"/home/amercer/R/x86_64-pc-linux-gnu-library/3.3/RcppArmadillo/include" -I"/home/amercer"   -fpic  -g -O2 -fstack-protector-strong -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c armatest.cpp -o armatest.o
g++ -shared -L/usr/lib/R/lib -Wl,-z,relro -o sourceCpp_4.so armatest.o -llapack -lblas -lgfortran -lm -lquadmath -L/usr/lib/R/lib -lR
Warning message:
In Rcpp::sourceCpp("armatest.cpp", verbose = TRUE, rebuild = TRUE) :
  No Rcpp::export attributes or RCPP_MODULE declarations found in source

据我所知，他们使用相同的标志执行完全相同的命令。是什么解释了差异？在Rstudio服务器上，Rcpp本身对我来说很合适，所以它特别关注RcppAarmadillo。

Answer 1

可能是你的设置本地的东西，因为它在RStudio也很好用但是请注意我添加了<script type="text/javascript"> function getValues() { var response = <%GetCharges%> document.getElementById(("<%=txtcharge.ClientID%>")).value = response;} } </script>以及一个自动执行的例子：

// [[Rcpp::export]]

你的例子，最低限度改变：

> Rcpp::sourceCpp("/tmp/armaQ.cpp")

> one()
[1] 1
>

从终端运行R而不是rstudio-server

1 个答案: