a problem of building project in nios2 IDE

Hi, I am new to Nios2. I have the same problem when using "small"

example. When switching to "standard", it can be compiled successfully.

This was a simple "hello_world" appliation for cyclone 1c20. In the "small"

example comes with NiosII software, the on-chip-RAM is only 2K.

However, the error message said it need ~11KB bigger.

So, as mentioned by Rugbyblock, I change the compiler setting to -o3 and set

-DALT_USE_SMALL_DRIVERS. It still needs a lot of memory(~9K). So, I have to

go back to SOPC to change on-chip-RAM length to 16KB. Then it works.

I am not sure whther it is normal that a "hello_world" program needs ~13KB

memory. Or I am doing something wrong. If it needs ~13KB RAM, why the

"small" example from Altera only set RAM size to 2KB?

Thanks for any help.