I have emptied CFLAGS (edit:and CCFLAGS, and from the prompt): $ENV{CFLAGS}=''; but no change...

So, I did this:

# before compile() is called (and after new())
$cbuilder->{config}->{ccflags} =~ s/(?<=\s)\-O[0-9]{0,2}(?=\s|$)//g; #
+ remove -OXX
$cbuilder->{config}->{ccflags} =~ s/(?<=\s)\-g(?=\s|$)//g # remove -g
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Thanks