Solaris emulation

Hi,

Please excuse my ignorance as I am new to Linux on Sparc.

I built a new kernel in order to be able to use Solaris emulation.
insmod solaris results in a long list on unresolved symbols, ie:
solaris_syscall
I checked the source and found it ifdef-ed by
 #ifdef CONFIG_SOLARIS_EMUL_MODULE
but there is no such option in my .config file, only CONFIG_SOLARIS_EMUL

Am I missing something? The search engine on redhat.com where a I was 
hoping to get some infos from couldn't find glimpse index.

It is kernel source 2.2.14, installed from kernel-source-2.2.14-5.0.rpm

Thanks for your help,
Chris

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