I haven't had any problems compiling SRS 505 on a handful of
Solaris (2.4/2.5.x) systems, including Solaris on X86, using Sun's C compiler.
The -Xa switch is a Sun C switch, but not a GCC switch, I think.
I don't recall needing to make any changes to the SRS make/install
scripts to compile.
-- d.gilbert--biocomputing--indiana u--bloomington--gilbertd at bio.indiana.edu