Hi Helio, thank for your reply and the suggestion. I guess this would 
have been the most simple way to solve this issue.
However, meanwhile I've found another workaround: I found out that I can 
tell gretl the correct paths in the file /lib/.deps/gretl_foreign.d. 
Unfortunately, this has to be done by hand but at least the installation 
works well.
However, now trying to call the R library yields the following error: 
"To use Rlib, the variable R_HOME must be set". Asking R how R_HOME is 
set, gives me
<R>
     Sys.getenv("R_HOME")
     [1] "/usr/local/lib/R"
</R>
Nevertheless, gretl has no idea how R_HOME is set :-(
Any ideas on this?
Artur
On 16.09.2017 19:07, Hélio Guilherme wrote:
 sudo ln -s /usr/local/share/R /usr/share/R