Dear list, there seems to be a problem with the standard location of R´s 64-bit libs at least under openSUSE.
I had two user questions regarding the compilation of rpy2 for 64-bit systems. Personally I don`t know rpy2 but maybe someone on this list can decide if the mistake lies on R`s side or on rpy2´s side or in between. R-devel is installed in these cases, I asked. Latest R-base or R-patched is used. The following problem occurs (user report): ----------------------- > Python 2.7 (r27:82500, Aug 07 2010, 16:54:59) [GCC] on linux2 > Type "help", "copyright", "credits" or "license" for more information. > >>> import rpy2.robjects as robjects > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > File "/usr/local/lib64/python2.7/site-packages/rpy2/robjects/__init__.py", > line 12, in <module> import rpy2.rinterface as rinterface > File > "/usr/local/lib64/python2.7/site-packages/rpy2/rinterface/__init__.py", > line 66, in <module> from rpy2.rinterface.rinterface import * > ImportError: /usr/lib64/R/lib/libRlapack.so: undefined symbol: > _gfortran_concat_string ---------------------- So there are difficulties with lapack/fortran libs. An older version of apparently the same error can be found here: http://www.mail-archive.com/animov@faunalia.it/msg00311.html Another user reported the following: ---- After installing the R devel version with Yast on the 11.4 64 system there was a link at this location : /usr/lib64/libRlapack.so and the actual file was here : /usr/lib64/R/lib/libRlapack.so I compiled R from source : ./configure --prefix=/usr --enable-R-shlib make make install The make install step did not copy the new *.so files to /usr/lib64/R/lib therefore I manually copied the new libRlapack.so , libR.so and libRblas.so After that the python rpy2 library loaded and all was ok. I hope this will help you to identify this issue . ------ Because he had to manually copy over libs after installing from source maybe there is an easy improvement on the side of R`s installation routines? Some ldconfig call missing or something? Or is this an opensuse specific problem? Any hint appreciated. Detlef
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