[Rd] Lapack calls from fortran

Douglas Bates dmbates at gmail.com
Wed Jun 22 17:47:39 CEST 2005

On 6/22/05, Paul Gilbert <pgilbert at bank-banque-canada.ca> wrote:
> I am trying to call the lapack routine dgesv in the R distribution from
> the fortran code for a package, but when I dyn.load("dse1.so") I get an
> error about undefined symbol: dgesv_
> I thought the proper incantation was
> MAKEFLAG="FLIBS=/path to/R-2.1.1/libRlapack.so" R CMD SHLIB dse1.f
> but apparantly not. How does one do this?

See section 1.2.1 of "Writing R Extensions".  You should add a file
called Makevars to the src directory and include the line


in that file

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