[PERFORM] compiling 7.4.1 on Solaris 9

[teknokrat]

can anyone tell me what the best way to compile postgresql 7.4.1 on 
Solaris 9 (UltraSparcIII)  is? I have latest gmake and gcc installed. I 
was going to use CFLAGS="-O2 -fast -mcpu=ultrasparc" based on snippets 
I've read about the place. Would using -O3 be an improvement?

thanks

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