Today I built and installed swish-e-2.2rc1 on:

Linux version 2.4.9-21enterprise (bhcompile@stripples.devel.redhat.com)  
(gcc version 2.96 20000731 (Red Hat Linux 7.1 2.96-98))

I got pages of spewed warnings like this:

    swish.h:185:1: warning: C++ style comments are not allowed in ISO C89
    swish.h:185:1: warning: (this will be reported only once per input file)
    In file included from swish.c:27:
    mem.h:114:16: warning: '$' character(s) in identifier

Hmmmm...

	Rick