[Scribus] Building debug version of Scribus

[ols6000 at sbcglobal.net]

At 06:42 PM 3/18/2007, you wrote:
>GCC actually does a good job of debugging optimised code, and I often
>use -O1 when debugging because it actually does a better job. However,
>sometimes code reordering can be confusing.

The compilations are being done with -O2, and in addition to the code 
reordering, there are symbols which are optimized out, so you can't 
examine their values.

So how do you change -O2 to -O0 or -O1?