Question

每当我使用RcppEigen或RcppNumerical时，我都会在控制台中获得一条很长的警告信息。

/home/Haache/R/x86_64-pc-linux-gnu-library/3.4/RcppEigen/include/Eigen/src/Core/util/XprHelper.h:170:83: warning: ignoring attributes on template argument ‘Eigen::internal::packet_traits<double>::type {aka __vector(2) double}’ [-Wignored-attributes]
/home/Haache/R/x86_64-pc-linux-gnu-library/3.4/RcppEigen/include/Eigen/src/Core/util/XprHelper.h:170:83: warning: ignoring attributes on template argument ‘Eigen::internal::unpacket_traits<__vector(2) double>::half {aka __vector(2) double}’ [-Wignored-attributes]
/home/Haache/R/x86_64-pc-linux-gnu-library/3.4/RcppEigen/include/Eigen/src/Core/util/XprHelper.h:188:88: warning: ignoring attributes on template argument ‘Eigen::internal::packet_traits<double>::type {aka __vector(2) double}’ [-Wignored-attributes]
   typedef typename find_best_packet_helper<Size,typename packet_traits<T>::type>::type type;
                                                                                        ^~~~

In file included from /home/Haache/R/x86_64-pc-linux-gnu-library/3.4/RcppEigen/include/Eigen/Core:430:0,
                 from /home/Haache/R/x86_64-pc-linux-gnu-library/3.4/RcppEigen/include/Eigen/Dense:1,
                 from /home/Haache/R/x86_64-pc-linux-gnu-library/3.4/RcppEigen/include/RcppEigenForward.h:30,
                 from /home/Haache/R/x86_64-pc-linux-gnu-library/3.4/RcppEigen/include/RcppEigen.h:25,
                 from /home/Haache/R/x86_64-pc-linux-gnu-library/3.4/RcppNumerical/include/RcppNumerical.h:10,
                 from PeerCount.cpp:3:

但是，代码效果很好。我为任何代码获取此代码。加载

后会出现警告

#include <RcppEigen.h>

或

#include <RcppNumerical.h>

我的所有套餐都是最新的

Answer 1

正如Dirk在评论中所说，您可以将-Wno-ignored-attributes添加到编译器标志中。您可以通过创建文件~/.R/Makevars并添加

来实现这一目标

CXXFLAGS+=-Wno-ignored-attributes
CXX11FLAGS+=-Wno-ignored-attributes
CXX14FLAGS+=-Wno-ignored-attributes

在Ubuntu 18.04上的RcppNumerical和RcppEigen中发出警告

1 个答案: