title: RcppArmadillo: failing to install on CentOS
body: <p>I am trying to install RcppArmadillo on CentOS. Here are some environment details:</p>
  
  <pre><code>OS: CentOS release 6.5 (Final)
  R version: R-3.1.2-1.el6.x86_64
  uname -sr: Linux 2.6.32-431.29.2.el6.x86_64
  gcc (GCC) 4.4.7 20120313 (Red Hat 4.4.7-11)
  </code></pre>
  
  <p>I have listed below the error message I get if run <code>install.packages("RcppArmadillo")</code> from within R. Any help much appreciated. Cheers.</p>
  
  <pre><code>* installing *source* package ‘RcppArmadillo’ ...
  ** package ‘RcppArmadillo’ successfully unpacked and MD5 sums checked
  * checking LAPACK_LIBS: divide-and-conquer complex SVD available via R-supplied LAPACK
  ** libs
  g++ -m64 -I/usr/include/R -DNDEBUG  -I/usr/local/include -I"/home/rexec/R/library/Rcpp/include"  -I../inst/include -fpic  -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic  -c RcppArmadillo.cpp -o RcppArmadillo.o
  In file included from ../inst/include/armadillo:97,
               from ../inst/include/RcppArmadilloForward.h:46,
               from ../inst/include/RcppArmadillo.h:30,
               from RcppArmadillo.cpp:22:
  ../inst/include/armadillo_bits/traits.hpp: In instantiation of ‘const bool arma::is_arma_type&lt;std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt; &gt;::value’:
  ../inst/include/armadillo_bits/op_expmat_meat.hpp:51:   instantiated from here
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview_elem2’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview_elem1’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview_col’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview_row’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt;     struct arma::is_diagview’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_mtGlue’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_mtOp’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_eGlue’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_eOp’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_Glue’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_Op’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_Gen’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;unsigned int&gt;, std::__is_floating&lt;unsigned int&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_Mat’
  ../inst/include/armadillo_bits/traits.hpp: In instantiation of ‘const bool arma::is_arma_type&lt;std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt; &gt;::value’:
  ../inst/include/armadillo_bits/op_expmat_meat.hpp:51:   instantiated from here
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview_elem2’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview_elem1’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview_col’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview_row’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_subview’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_diagview’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_mtGlue’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_mtOp’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_eGlue’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_eOp’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_Glue’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_Op’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_Gen’
  ../inst/include/armadillo_bits/traits.hpp:614: error: ‘std::__traitor&lt;std::__is_integer&lt;double&gt;, std::__is_floating&lt;double&gt; &gt;::&lt;anonymous enum&gt;’ is/uses anonymous type
  ../inst/include/armadillo_bits/traits.hpp:614: error:   trying to instantiate ‘template&lt;class T&gt; struct arma::is_Mat’
  make: *** [RcppArmadillo.o] Error 1
  ERROR: compilation failed for package ‘RcppArmadillo’
  * removing ‘/home/rexec/R/library/RcppArmadillo’
  
  The downloaded source packages are in
  ‘/tmp/Rtmp2hNzB9/downloaded_packages’
  Warning message:
  In install.packages("RcppArmadillo") :
    installation of package ‘RcppArmadillo’ had non-zero exit status
  </code></pre>