由RcppArmadillo.package.skeleton创建的NAMESPACE选项会导致错误

Question

我正在创建一个包含Rcpp函数的R包,这取决于RcppArmadillo,所以我首先生成包骨架RcppArmadillo.package.skeleton.但是,当roxygenize我的包裹,它给我一个错误如下所示.

R代码

library(roxygen2)
library(RcppArmadillo)
library(Rcpp)
RcppArmadillo.package.skeleton(name = "prac_181206", example_code = FALSE)
roxygenize(package.dir =  "prac_181206", roclets = "rd")

错误

Error in getDLLRegisteredRoutines.DLLInfo(dll, addNames = FALSE) : 
  must specify DLL via a “DLLInfo” object. See getLoadedDLLs()

花了一些时间后,我想通过删除文件中的.registration选项可以解决这个问题,NAMESPACE如下所示.

原始NAMESPACE文件

useDynLib(prac_181206, .registration=TRUE)
importFrom(Rcpp, evalCpp)
exportPattern("^[[:alpha:]]+")

简而言之,在更改上面的第一行后useDynLib(prac_181206),它工作正常,但我不明白错误的含义以及我的解决方案的工作原理.

你能帮我解决这个问题吗？我很感激!

因为这是一个玩具示例,希望可以重现,我没有包含上面创建的任何其他功能man或src文件夹RcppArmadillo.package.skeleton.

仅供参考,有关我平台的相关信息是

• Windows 7 x64
• R-3.5.1,Rstudio-1.1.423
• Rcpp-0.12.19,RcppArmadillo-0.9.100.5.0
• roxygen2-6.1.1

Answer 1

也就是说,尽我所知,roxygen2发行票#771我于8月3日提交,但仍未解决.尽管roxygen2球队关闭了它.随意跟进那里.

如果使用roxygen2 6.0.1,它可以工作:

edd@rob:/tmp$ r -lRcppArmadillo -e'RcppArmadillo.package.skeleton(name = "prac_181206", example_code = FALSE)'

Calling kitten to create basic package.
Creating directories ...
Creating DESCRIPTION ...
Creating NAMESPACE ...
Creating Read-and-delete-me ...
Saving functions and data ...
Making help files ...
Done.
Further steps are described in './prac_181206/Read-and-delete-me'.

Adding pkgKitten overrides.
Deleted 'Read-and-delete-me'.
Done.

Consider reading the documentation for all the packaging details.
A good start is the 'Writing R Extensions' manual.

And run 'R CMD check'. Run it frequently. And think of those kittens.


Adding RcppArmadillo settings
 >> added Imports: Rcpp
 >> added LinkingTo: Rcpp, RcppArmadillo
 >> added useDynLib and importFrom directives to NAMESPACE
 >> added Makevars file with Rcpp settings
 >> added Makevars.win file with RcppArmadillo settings
edd@rob:/tmp$ cd prac_181206/
edd@rob:/tmp/prac_181206$ roxy.r 
** Using cached version 6.0.1 of roxygen2.
First time using roxygen2. Upgrading automatically...
Updating roxygen version in /tmp/prac_181206/DESCRIPTION
Loading required package: Rcpp
edd@rob:/tmp/prac_181206$ 

其中roxy.r是这种简单的包装该硬线 roxygen2 6.0.1.