[R-pkg-devel] reduce size of shared objects

[Iñaki Ucar]

On Wed, 11 Dec 2019 at 14:07, Guido Kraemer <gkraemer using bgc-jena.mpg.de> wrote:
>
> I am building an R package (https://github.com/gdkrmr/zarr-R) that wraps
> a couple of C++ headers and the resulting shared object is huge (>20Mb,
> see https://travis-ci.org/gdkrmr/zarr-R). I have tried to set the
> following in `./src/Makevars`:
>
> PKG_CPPFLAGS=-I"../inst/include" -ffunction-sections -fdata-sections
> PKG_LIBS=-lstdc++fs -flto -Wl,--gc-sections
>
> but this does not reduce the size of the shared object and produces some
> warnings in `R CMD check` due to portability issues. Is there a way to
> reduce the size of the shared object or do I just have to live with it?

Hi, see Dirk's http://dirk.eddelbuettel.com/blog/2019/03/27/ and
related posts (linked in the first paragraph).

Iñaki