spec benchmark testing

[Virender Kashyap]

Hi
    I am trying to test gcc-4.0 on c modules in SPEC CPU200 benchmark 
source using -combine 
option , which enables optimizations across files (producing one assembly 
for whole module). I give following command :
gcc -combine -S *.c
The above command works for some of the modules 
(164.zip,256.bzip2,181.mcf,175.vpr,181.mcf)., whereas in others I get 
compilation errors. Do these modules have dependencies outside the source 
directory ? If not , what is the right way to compile them.

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Regards.
Virender