c++ - 无法使用 Armadillo 示例编译 rinside

Question

我正在尝试使用 Rinside 编译 Rarmadillo 示例，但我不断得到:

In file included from rinside_arma0.cpp:8:0:
/usr/local64/opt/R-2.15.2/lib/R/library/RcppArmadillo/include/RcppArmadillo.h:26:6: error: #error "The file 'Rcpp.h' should not be included. Please correct to include only 'RcppArmadillo.h'."

我用谷歌搜索了它，但我一直在获取源代码本身。有什么想法吗？

代码是:

// -*- c-indent-level: 4; c-basic-offset: 4; indent-tabs-mode: nil; -*-
//
// Simple example using Armadillo classes
//
// Copyright (C) 2012  Dirk Eddelbuettel and Romain Francois

#include <RInside.h>                    // for the embedded R via RInside
#include <RcppArmadillo.h>

int main(int argc, char *argv[]) {

    RInside R(argc, argv);      // create an embedded R instance

    std::string cmd = "diag(3)";    // create a Matrix in r 

    arma::mat m = Rcpp::as<arma::mat>(R.parseEval(cmd)); // parse, eval + return result

    std::cout << m << std::endl;    // and use Armadillo i/o  

    exit(0);
}

并使用以下方法编译它:

g++ -I/usr/local64/opt/R-2.15.2/lib/R/include -I/usr/local64/opt/R-2.15.2/lib/R/library/Rcpp/include -I"/usr/local64/opt/R-2.15.2/lib/R/library/RcppArmadillo/include"   -I/usr/local64/opt/R-2.15.2/lib/R/library/RInside/include -g -O2 -Wall -I/usr/local/include   rinside_arma0.cpp  -L/usr/local64/opt/R-2.15.2/lib/R/lib -lR  -lf77blas -latlas -llapack -L/usr/local64/opt/R-2.15.2/lib/R/library/Rcpp/lib -lRcpp -Wl,-rpath,/usr/local64/opt/R-2.15.2/lib/R/library/Rcpp/lib -L/usr/local64/opt/R-2.15.2/lib/R/library/RInside/lib -lRInside -Wl,-rpath,/usr/local64/opt/R-2.15.2/lib/R/library/RInside/lib  -o rinside_arma0

Answer 1

您得到的错误是因为 Rcpp.h 包含在 RcppArmadillo.h 之前，Rcpp.h 包含在 RInside .h.

对于 RcppArmadillo 的魔力，需要在 Rcpp.h 之前加载文件 RcppArmadillo.h。所以我建议你这样做:

#include <RcppArmadillo.h>
#include <RInside.h>