scliba build install BEpsf and SEpsf with an incorrectly set SCI variable. It also does not include then in the bin directory leaving then on /usr/lib/scilab-3.0/bin. Reproducible: Always Steps to Reproduce:
I aim to fix that soon. Just for the record, *lots* of files in Scilab reference "/var/tmp/portage/scilab-yada-yada", including documentation and scripts.
This should be fixed now. Thanks for reporting.