Looks like you’re somehow defining NAN_PYTHON = /scratch/jessica/python-2.4/SunOS5.8 and NAN_PYTHON_VERSION = 2.4.
Try this from the blender directory;
grep -R NAN_PYTHON .
or to output to a file;
grep -R NAN_PYTHON . > random_file_name.txt
It does help a lot if you give the compiler errors in context instead of just giving the error.
Ah, you’re building from the source tarball that’s been released. Remove the user-config.py file that accidently got packaged with it (I blame sirdude!)
/Nathan
Thankkkkkkkkkkkkkks now compiles with and without optimizations and with or withoug SSGI patch. But when I execute it I get segmentation fault in all the optimized builds. I will keep reporting.
The segmentation fault was caused by compositing effects+ati+blender so its solved. I haven’t make SSGI appear yet but sure its my fault, I keep on checking.
Thanks all for your advises and answers 
Heh, also points out a bug in my debian rules file that doesn’t properly restore this file after a ‘clean’. Probably doesn’t matter since it shouldn’t be there but still…
Guess that’s why my grep through the source tree didn’t find it.