Jon, On Jul 4, 2013, at 10:52 AM, Jon Clayden wrote:
> Dear all, > > I have a simple front-end program which uses the APIs described in section > 8 of "Writing R Extensions" to deviate from the standard R behaviour in > fairly minor ways. However, I'm having some difficulty getting it to link > reliably across different platforms. > > R CMD LINK seemed like it would help, but I've had difficulty finding many > real-world examples online. I've tried > > R CMD LINK $(R CMD config CC) $(R CMD config --cppflags) $(R CMD config > --ldflags) -o ../bin/exec/tractor tractor.c > > and this works on one of my test platforms (OS X.8.4, R 3.0.1), but not the > other (Ubuntu 12.04 LTS, R 2.14.1). In the latter case I get the error > > /usr/bin/ld: /tmp/ccmKf57E.o: undefined reference to symbol 'log10@ > @GLIBC_2.0' > /usr/bin/ld: note: 'log10@@GLIBC_2.0' is defined in DSO > /lib/i386-linux-gnu/libm.so.6 so try adding it to the linker command line > /lib/i386-linux-gnu/libm.so.6: could not read symbols: Invalid operation > collect2: ld returned 1 exit status > > I can correct this by adding "-lm" manually to the command, but I'm not > sure how portable that will itself be. > My guess would be that you did not use --enable-R-shlib when compiling R on Ubuntu so you don't have a shared version of the R library to link against (which is needed to resolve the dependencies). Could that be the case? Cheers, Simon > Could anyone advise on the best way to make this work portably, please? For > this application I'm not concerned about Windows compatibility - > portability across Unix-alikes is sufficient. The source code is at < > https://github.com/jonclayden/tractor/blob/master/src/tractor.c>, if that > is useful. > > All the best, > Jon > > [[alternative HTML version deleted]] > > ______________________________________________ > R-devel@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-devel > > ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
