I am having trouble with creating shared objects with Fortran files, which use numerical libraries Lapack and Blas. I have read the section in "Writing R Extensions" but could not find what I needed and I am not at the stage to create a library.
What I did was $R CMD SHLIB --output=car file1.f file2.f ... file50.f -llapack -lblas No error message so far, But $>dyn.load("./car") Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library "/home/zwang/R/pkg/car/src/./car": /home/zwang/R/pkg/car/src/./car: undefined symbol: slamch_ I think the way I used to link Lapack and Blas was not correct, even though it worked fine when I used for running Fortran code before. Thanks for any advice. Zhu Wang Statistical Science Department Southern Methodist University Dallas, TX 75275-0332 ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html