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<body class='hmmessage'><div dir='ltr'>Hello,<div><br></div><div>I know this question has been answered before (and I have searched for it), but I cannot figure out a solution:</div><div><br></div><div>I want to use boost with Rcpp, basically to be able to use numbers with a higher precision than a double. I am comfortable using the inline package for small c++ functions, I have never used Rccp per se. I have created a skeleton with convolve, and it works. I have added a new function:</div><div><br></div><div><div>// We can now use the BH package</div><div>// [[Rcpp::depends(BH)]]</div><div><br></div><div>#include <Rcpp.h></div><div>#include <boost/math/common_factor.hpp> </div><div><br></div><div>using namespace Rcpp;</div><div> </div><div>// [[Rcpp::export]]</div><div>int computeGCD(int a, int b) {</div><div> return boost::math::gcd(a, b);</div><div>}</div></div><div><br></div><div>and when I try to compile, it fails (basically, the compiler does not find where boost is). I have then run in R:</div><div><br></div><div>Sys.setenv("PKG_CXXFLAGS"="-I C:/Program~Files/boost/boost_1_57_0/")</div><div><br></div><div>which allows me to go a bit more into the build, but the compile fails when reaching the <span style="font-size: 12pt;">#include <boost/math/common_factor.hpp> above, since it does not know where boost is (boost is at </span>C:/Program~Files/boost/boost_1_57_0/ I have not compiled it, but just extracted with 7-zip and copied and pasted the corresponding files into this subfolder).</div><div><br></div><div>From reading the attribute document of Dirk Eddelbuettel, it seems as if adding the comments <span style="font-size: 12pt;">// [[Rcpp::export]] and </span><span style="font-size: 12pt;">// [[Rcpp::depends(BH)]] would do the job. But for me, it does not work. What do I need to do? Thanks and sorry for the basic question, I have tried to read everything I could before asking this list.</span></div> </div></body>
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