[R] Rcpp cpp11 and R CMD build

[Edwin van Leeuwen]

Hi all,

I've just started using Rcpp and am trying to get cpp11 support working. As
suggested I added [[Rcpp:plugins(cpp11)]] to my source file and a test
function:
// [[Rcpp::export]]
int useCpp11() {
  auto x = 10;
  return x;
}

This works fine when using:
sourceCpp(filename)
from R, but I would like to be able to compile the package from the command
line.
R CMD build mypackage
fails with the following error:
R CMD build ../fluEvidenceSynthesis
* checking for file ‘../fluEvidenceSynthesis/DESCRIPTION’ ... OK
* preparing ‘fluEvidenceSynthesis’:
* checking DESCRIPTION meta-information ... OK
* cleaning src
* installing the package to process help pages
      -----------------------------------
* installing *source* package ‘fluEvidenceSynthesis’ ...
** libs
g++ -I/usr/share/R/include -DNDEBUG
-I"/home/edwin/R/x86_64-pc-linux-gnu-library/3.2/Rcpp/include"
-I"/home/edwin/R/x86_64-pc-linux-gnu-library/3.2/BH/include"   -fpic  -g
-O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat
-Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c RcppExports.cpp -o
RcppExports.o
g++ -I/usr/share/R/include -DNDEBUG
-I"/home/edwin/R/x86_64-pc-linux-gnu-library/3.2/Rcpp/include"
-I"/home/edwin/R/x86_64-pc-linux-gnu-library/3.2/BH/include"   -fpic  -g
-O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat
-Werror=format-security -D_FORTIFY_SOURCE=2 -g  -c rcpp_hello_world.cpp -o
rcpp_hello_world.o
rcpp_hello_world.cpp: In function ‘int useCpp11()’:
rcpp_hello_world.cpp:33:10: error: ‘x’ does not name a type
     auto x = 10;
          ^
rcpp_hello_world.cpp:34:12: error: ‘x’ was not declared in this scope
     return x;
            ^
make: *** [rcpp_hello_world.o] Error 1
ERROR: compilation failed for package ‘fluEvidenceSynthesis’
* removing ‘/tmp/RtmpWdUduu/Rinst2b601aa285e9/fluEvidenceSynthesis’
      -----------------------------------
ERROR: package installation failed


Any help appreciated.

Cheers, Edwin

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