On 9 May 2012 at 00:35, Zalan Szakolci wrote:
| Hi there,
|
| I am trying to interface c++ code in R and make a package. With R CMD SHLIB
| the dll was created, but when I try R CMD check, I am getting 'undefined
| reference to..' linkage error messages.
|
| The relevant c++ source from conf-infomap.cpp:
[...]
| Now when I run R CMD check, in file 00install.out I am getting the
| following linking errors:
|
| * installing *source* package �DyA� ...
| ** libs
| ** arch -
| g++ -I/usr/share/R/include -DNDEBUG -fpic -I -Wall -O3 -funroll-loops
| -pipe -c conf-infomap.cpp -o conf-infomap.o
| g++ -I/usr/share/R/include -DNDEBUG -fpic -I -Wall -O3 -funroll-loops
| -pipe -c GreedyBase.cpp -o GreedyBase.o
| g++ -I/usr/share/R/include -DNDEBUG -fpic -I -Wall -O3 -funroll-loops
| -pipe -c Greedy.cpp -o Greedy.o
| g++ -I/usr/share/R/include -DNDEBUG -fpic -I -Wall -O3 -funroll-loops
| -pipe -c Node.cc -o Node.o
| g++ conf-infomap.o GreedyBase.o Greedy.o Node.o mersenne.cpp stoc1.cpp
| userintf.cpp -lm -o conf-infomap
What is your src/Makevars file?
This looks very wrong as you are obviously not linking against R itself.
I would recommend a good long look at both the 'Writing R Extensions' manual
as well as some of the existing CRAN packages uses C++ sources.
You can (and should) also try
R CMD COMPILE ...
R CMD SHLIB ...
R CMD INSTALL ...
etc as 'R CMD check' is really only the final bit.
Dirk
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