CLISP - an ANSI Common Lisp

Hello,

Trying to asdf cl-rss loaded from Ubuntu repository got this error message:
.....
;; Compiling file /usr/share/common-lisp/source/aserve/main.cl ...
*** - READ from #<INPUT BUFFERED FILE-STREAM CHARACTER #P"/usr/share/common-lisp/source/aserve/main.cl" @218>: there is no package with name "UNIX"
The following restarts are available:
RETRY :R1 Retry performing #<ASDF:COMPILE-OP NIL #x000333CFA990> on #<ASERVE-SYSTEM::LEGACY-ACL-SOURCE-FILE "main" #x000333CEA000>.
ACCEPT :R2 Continue, treating #<ASDF:COMPILE-OP NIL #x000333CFA990> on #<ASERVE-SYSTEM::LEGACY-ACL-SOURCE-FILE "main" #x000333CEA000> as having been successful.
ABORT :R3 Abort main loop
Break 1 NET.ASERVE[17]> *features*
(:HTMLGEN :ACL-COMPAT :CL-PPCRE :KMR-MOP :ASDF :REGEXP :SYSCALLS :I18N :LOOP :COMPILER :CLOS :MOP :CLISP :ANSI-CL :COMMON-LISP :LISP=CL :INTERPRETER
:SOCKETS :GENERIC-STREAMS :LOGICAL-PATHNAMES :FFI :GETTEXT :UNICODE :BASE-CHAR=CHARACTER :WORD-SIZE=64 :PC386 :UNIX)
Break 1 NET.ASERVE[17]>

So, there is no package with name "UNIX", but it is in the *features* list! Please, explain me this phenomenon and tell me what to do next? Thanks in advance.
Sincerely,
Ru

(member :unix *features*) doesn't mean there's a package named "UNIX". See:
http://clisp.podval.org/impnotes/features.html

Try PortableAllegroServe instead of AllegroServe.

Or you could try gentoo instead of ubuntu, in gentoo,
/usr/share/common-lisp/source/aserve/main.cl is up-to-date:
#+(and clisp unix)
(defun getpid () (sys::process-id))

note that clisp has process-id on ALL platforms, not just unix

#+(and clisp unix)
(defun getpid () (sys::process-id))

solved the problem, but follow many messages:

ATTEMPT TO USE MULTITHREADING IN CLISP..

As I understand, this problem is unsolvable at all, am I right?

One more question: Why I need to load whole Aserve and components it need into my program when I want only to read rss? Is there a way to avoid this?

By the way: In description of cl-aserve package is written that it is Poratble Aserve

Thanks in advance,
Ru