[R-pkg-devel] Package building - compiling multiple dll files from within src directory

Mark mark614 at icloud.com
Fri May 5 20:09:23 CEST 2017

Hi Uwe,

Thank you, I have a series of cc files that use similar function names, so to avoid overriding functions, I thought to compile and load each of the cc files separately. In more detail, I have a series of models for the use in deSolve, they all have the same initmod and derivs internal functions. See 2.2 section: https://cran.r-project.org/web/packages/deSolve/vignettes/compiledCode.pdf

I realised I need to define the makevars file, but I don't know where to start, would you be able to advise on how to structure the makevars file?



On May 05, 2017, at 09:26 AM, Uwe Ligges <ligges at statistik.tu-dortmund.de> wrote:

Why do you want to build separate dll files if you want to load all of 
them anyway? That way you add some overhead, at least.

From Writing R Extensions:

"A few packages use the src directory for purposes other than making a 
shared object (e.g. to create executables). Such packages should have 
files src/Makefile and src/Makefile.win (unless intended for only 
Unix-alikes or only Windows)."

Uwe Ligges

On 04.05.2017 17:09, Mark wrote:

I am creating an R package with multiple c files within src directory.
If possible, I would like to create separate dll files for each c file.
Also I would like those dll files to have the same name as the input c
files. i.e:
mod01.c -o mod01.dll
mod02.c -o mod02.dll
mod03.c -o mod03.dll

I could then load different dll files in the NAMESPACE:

I don't know how can I set the MAKEVARS to do this correctly, and any
suggestions would be much appreciated.

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