[R] Rcpp cpp11 and R CMD build

[Edwin van Leeuwen]

Thank you! I was missing the SystemRequirements. I guess it could be useful
to add this to the example given here:
http://gallery.rcpp.org/articles/simple-lambda-func-c++11/

Cheers, Edwin

On Wed, 24 Jun 2015 at 17:50 Charles Determan <cdetermanjr at gmail.com> wrote:

> Hi Edwin,
>
> If you look at the build output you will notice that the C++11 compiler
> flag is not being used.  I just created a small package using Rcpp11 and
> your function and it worked without a problem.  I can't give you a specific
> reason without seeing your package but there are some possibilities I would
> guess right away.
>
> 1. Make sure you are 'LinkingTo' Rcpp11 in your DESCRIPTION
> 2. Unless you are using some custom Makevars file, you should set
> 'SystemRequirements: C++11' in your DESCRIPTION
>
> Charles
>
> On Wed, Jun 24, 2015 at 10:07 AM, Edwin van Leeuwen <edwinvanl at gmail.com>
> wrote:
>
>> 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
>>
>>         [[alternative HTML version deleted]]
>>
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>> and provide commented, minimal, self-contained, reproducible code.
>
>
>

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