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
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