On 9/25/19 1:00 PM, Ralf Stubner wrote:
On Wed, Sep 25, 2019 at 10:29 AM Sameh M. Abdulah
<sameh.abdu...@kaust.edu.sa> wrote:
I am installing OpenBLAS because I need LAPACKE libraries which I cannot find
on the current version of OpenBLAS on CRAN.
I add the libraries directory in my package to the PKG_CONFIG_PATH. Is this
enough for the system to use my OpenBLAS library?
I seem to be missing some context here. I might be able to help you if
provide a higher level description of what you are trying to achieve.
For example, why do you need LAPACKE instead of the C interface to
LAPACK provided by R_ext/Lapack.h? And if you really need LAPACKE, why
not include only that in your package and link with the BLAS/LAPACK
used by R?
Also with LAPACKE you will have the problem of (in)compatibility in
calls from C to Fortran with the hidden length arguments for character
arguments. It would be better to use LAPACK directly, passing the hidden
length arguments as described in Writing R Extensions (the R-devel
version of it, section 6.6.1). Or, if you wanted a standards-based
solution, use iso_c_binding (also described in WRE). You would use the
LAPACK already provided in the system (either reference from R, or any
other as selected by administrator/user), not include it with your package.
Best
Tomas
cheerio
ralf
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