在Rcpp中不工作的Rcpp模块0.12.11

Question

更新Rcpp后，我的模块停止工作，我可以通过尝试安装通过Rcpp::Rcpp.package.skeleton("foo", module=TRUE)创建的测试包来重现此问题。

输出如下：

$ Rscript -e "Rcpp::Rcpp.package.skeleton('foo', module = TRUE)" 
Creating directories ... 
... 
$ R CMD INSTALL foo 
* installing to library ‘/home/SMARTODDS/pollockj/R/x86_64-suse-linux-gnu-library/3.4’ 
* installing *source* package ‘foo’ ... 
** libs 
g++-6 -I/usr/lib64/R/include -DNDEBUG -I"/home/SMARTODDS/pollockj/R/x86_64-suse-linux-gnu-library/3.4/Rcpp/include" -I/usr/local/include -fpic -O3 -c Num.cpp -o Num.o 
g++-6 -I/usr/lib64/R/include -DNDEBUG -I"/home/SMARTODDS/pollockj/R/x86_64-suse-linux-gnu-library/3.4/Rcpp/include" -I/usr/local/include -fpic -O3 -c RcppExports.cpp -o RcppExports.o 
g++-6 -I/usr/lib64/R/include -DNDEBUG -I"/home/SMARTODDS/pollockj/R/x86_64-suse-linux-gnu-library/3.4/Rcpp/include" -I/usr/local/include -fpic -O3 -c rcpp_hello_world.cpp -o rcpp_hello_world.o 
g++-6 -I/usr/lib64/R/include -DNDEBUG -I"/home/SMARTODDS/pollockj/R/x86_64-suse-linux-gnu-library/3.4/Rcpp/include" -I/usr/local/include -fpic -O3 -c rcpp_module.cpp -o rcpp_module.o 
g++-6 -I/usr/lib64/R/include -DNDEBUG -I"/home/SMARTODDS/pollockj/R/x86_64-suse-linux-gnu-library/3.4/Rcpp/include" -I/usr/local/include -fpic -O3 -c stdVector.cpp -o stdVector.o 
g++-6 -shared -L/usr/lib64/R/lib -L/usr/local/lib64 -o foo.so Num.o RcppExports.o rcpp_hello_world.o rcpp_module.o stdVector.o -L/usr/lib64/R/lib -lR 
installing to /home/SMARTODDS/pollockj/R/x86_64-suse-linux-gnu-library/3.4/foo/libs 
** R 
** byte-compile and prepare package for lazy loading 
** help 
*** installing help indices 
** building package indices 
** testing if installed package can be loaded 
Error: package or namespace load failed for ‘foo’ in .doLoadActions(where, attach): 
error in load action .__A__.1 for package foo: loadModule(module = "NumEx", what = TRUE, env = ns, loadNow = TRUE): Unable to load module "NumEx": Failed to initialize module pointer: Error in FUN(X[[i]], ...): no such symbol _rcpp_module_boot_NumEx in package foo 

Error: loading failed 
Execution halted 
ERROR: loading failed 
* removing ‘/home/SMARTODDS/pollockj/R/x86_64-suse-linux-gnu-library/3.4/foo’ 

任何想法如何解决，或者这是最新的RCPP的错误吗？

> packageVersion("Rcpp") 
[1] ‘0.12.11’ 
> sessionInfo() 
R version 3.4.0 (2017-04-21) 
Platform: x86_64-suse-linux-gnu (64-bit) 
Running under: SUSE Linux Enterprise Desktop 12 SP2 

Matrix products: default 
BLAS/LAPACK: /usr/lib64/libopenblas_serial.so.0 

locale: 
[1] LC_CTYPE=en_GB.UTF-8  LC_NUMERIC=C    LC_TIME=en_GB.UTF-8  
[4] LC_COLLATE=en_GB.UTF-8  LC_MONETARY=en_GB.UTF-8 LC_MESSAGES=en_GB.UTF-8 
[7] LC_PAPER=en_GB.UTF-8  LC_NAME=C     LC_ADDRESS=C    
[10] LC_TELEPHONE=C    LC_MEASUREMENT=en_GB.UTF-8 LC_IDENTIFICATION=C  

attached base packages: 
[1] stats  graphics grDevices utils  datasets methods base  

loaded via a namespace (and not attached): 
[1] compiler_3.4.0 

Answer 1

我可以确认的bug在Rcpp.package.skeleton()，甚至与更新RCPP 0.12.11.1。

但是请看我们包含的示例Rcpp模块包，特别是它的src/init.c文件。我相当肯定我自动生成，所以我们应该能够通过适当的电话tools::package_native_routine_registration_skeleton()修复骨架生成器。

这样，感谢您提交错误报告。你可以（现在）也许手动调整src/init.c。我提交了一个issue ticket，所以我们将看到有关修复临时Rcpp 0.12.11.2的问题。