[fpc-pascal] fpcup fails on Linux

[Juha Manninen]

I found a similar error from last December, experienced by Waldo Kitty :
  https://www.mail-archive.com/fpc-devel@lists.freepascal.org/msg32256.html
but there was no solution.

Why it happens only with rstconv.pp? Many units were already compiled
before that.
My test system is a fresh XUbuntu, 32-bit. No FPC was installed before
using fpcup.

Can everybody else build FPC on Linux?

Juha