[Rcpp-devel] RcppArmadillo fails on FreeBSD

[Rainer Hurling]

I tried RcppArmadillo_0.2.21.tar.gz with R-devel from today on FreeBSD 
9.0-CURRENT (amd64). The build fails with the following messages:

------------------------------------------
#R CMD INSTALL RcppArmadillo_0.2.21.tar.gz
* installing to library '/usr/local/lib/R/library'
* installing *source* package 'RcppArmadillo' ...
** libs
g++45 -I/usr/local/lib/R/include 
-I"/usr/local/lib/R/library/Rcpp/include"  -I../inst/include -fpic  -O2 
-pipe -Wl,-rpath=/usr/local/lib/gcc45 -fno-strict-aliasing -c 
RcppArmadillo.cpp -o RcppArmadillo.o
In file included from ../inst/include/armadillo:113:0,
                  from ../inst/include/RcppArmadilloForward.h:36,
                  from ../inst/include/RcppArmadillo.h:25,
                  from RcppArmadillo.cpp:22:
../inst/include/armadillo_bits/format_wrap.hpp: In function 'std::string 
arma::arma_boost::str(const 
arma::arma_boost::basic_format<arma::arma_boost::format, T2>&)':
../inst/include/armadillo_bits/format_wrap.hpp:146:25: error: 'snprintf' 
is not a member of 'std'
../inst/include/armadillo_bits/format_wrap.hpp: In function 'std::string 
arma::arma_boost::str(const 
arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::format, 
T2>, T3>&)':
../inst/include/armadillo_bits/format_wrap.hpp:198:25: error: 'snprintf' 
is not a member of 'std'
../inst/include/armadillo_bits/format_wrap.hpp: In function 'std::string 
arma::arma_boost::str(const 
arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::format, 
T2>, T3>, T4>&)':
../inst/include/armadillo_bits/format_wrap.hpp:250:25: error: 'snprintf' 
is not a member of 'std'
../inst/include/armadillo_bits/format_wrap.hpp: In function 'std::string 
arma::arma_boost::str(const 
arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::format, 
T2>, T3>, T4>, T5>&)':
../inst/include/armadillo_bits/format_wrap.hpp:302:25: error: 'snprintf' 
is not a member of 'std'
../inst/include/armadillo_bits/format_wrap.hpp: In function 'std::string 
arma::arma_boost::str(const 
arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::format, 
T2>, T3>, T4>, T5>, T6>&)':
../inst/include/armadillo_bits/format_wrap.hpp:354:25: error: 'snprintf' 
is not a member of 'std'
In file included from ../inst/include/armadillo:113:0,
                  from ../inst/include/RcppArmadilloForward.h:36,
                  from ../inst/include/RcppArmadillo.h:25,
                  from RcppArmadillo.cpp:22:
../inst/include/armadillo_bits/format_wrap.hpp: In function 'std::string 
arma::arma_boost::str(const 
arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::basic_format<arma::arma_boost::format, 
T2>, T3>, T4>, T5>, T6>, T7>&)':
../inst/include/armadillo_bits/format_wrap.hpp:406:25: error: 'snprintf' 
is not a member of 'std'
*** Error code 1
Stop in /tmp/RtmpXKyP4Y/R.INSTALL4dde5c9e/RcppArmadillo/src.
ERROR: compilation failed for package 'RcppArmadillo'
* removing '/usr/local/lib/R/library/RcppArmadillo'
------------------------------------------


Obviously there is something wrong with 'snprintf'. The appended patch 
avoids the breakage.

On the other hand the is a definition on FreeBSD for 'snprintf' in 
libc's stdio (/usr/src/lib/libc/stdio/snprintf.c). There is a short hint 
in the manpage:

SYNOPSIS
   #define _WITH_DPRINTF
   #include <stdio.h>
      int
      snprintf(char * restrict str, size_t size,
               const char * restrict format, ...);

If this is the same function as meant in 'RcppArmadilloConfig.h' is 
there any way to integrate it into the package? Please let me know if I 
can test something.

Many thanks in advance,
Rainer Hurling
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