Thomas Petzoldt wrote:
Prof Brian Ripley schrieb:
We've added a column at
http://cran.r-project.org/web/checks/check_summary.html
of test results using the Sun Studio compiler: it is intended that
these will be updated weekly.
The Sun Studio compiler is that used on Solaris: these runs were on
the Linux version. All the other platforms are using gcc 4, so this
provides an opportunity for checking for use of gcc-specific features
and also standards conformance (the Sun compilers have a long-time
reputation for close conformance to the language standards).
There are known problems where packages use C++ or JNI interfaces
(e.g. rgdal and EBImage) as the libraries and JVM were compiled under
gcc's conventions (even though a Sun JVMi is used). About half the
packages using rJava segfault, which seems to a JNI issue.
Some packages use gcc-specific compiler flags:
LogConcDEAD Matching amap geometry memisc taskPR
but the vast majority of the errors reported are C++ errors. One
class that may not be immediately obvious is the use of C headers in
C++: you are supposed to write e.g.
#includd <cmath>
NOT
#include <math.h>
Symptoms of this can be seen for packages
BayesTree EMCC MCMCfglmm MarkedPointProcess Matching Matrix
RQuantlib RandomFields Rcpp SoPhy compHclust dpmix igraph minet
mixer modeest monomvm multic pcaPP rgenoud robfilter segclust
simecol subselect
The reason can also be including <R.h> (as done in simecol) that
includes <math.h>
Do I understand it correctly that this means that including <R.h> is
wrong in C++?
I read "Writing R extensions" several times, but was not aware that this
was a mistake. If I replace <R.h> by <cmath> then it works on my
systems, but I want to be certain that there are no other side effects.
Thanks in advance for clarification!
Thomas Petzoldt
I changed it as requested, and include
#include <cmath>
#include <Rinternals.h>
... but still get the same error:
"simecol.cpp", line 224: Error: Overloading ambiguity between
"floor(double)" and "std::floor(float)".
1 Error(s) detected.
http://www.r-project.org/nosvn/R.check/r-devel-linux-x86_64-sun/simecol-00install.html
What's wrong here? My code is very short and extremely simple, without
any new objects (yet), but fact only "plain C with some C++" extension.
What I'm making wrong? Would it be necessary that we all have a Linux
installation with Sun Studio at hand?
Thanks a lot
Thomas P.
--
Thomas Petzoldt
Technische Universitaet Dresden
Institut fuer Hydrobiologie thomas.petzo...@tu-dresden.de
01062 Dresden http://tu-dresden.de/hydrobiologie/
GERMANY
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