Compiler Setting in NIOSII IDE

I tried the option -c "compile and assemble but do not link" in NIOS II IDE. That doesn't work.

I changed the C/C++ build properties , compiler flags = -c

See the following screenshot :

make -s all

Compiling MAIN.c...

Compiling alt_irq_register.c...

Compiling alt_main.c...

Linking IRQ_CHECK.elf...

nios2-elf-g++: cannot specify -o with -c or -S and multiple compilations

make: *** [IRQ_CHECK.elf] Error 1

Build completed

I really don't think that option :

S Compile only; do not assemble or link

is the rigth one - I'd like to see whats the assembled output of my C-source.

I think it is even a problem to change this under NIOS IDE II ?

Thank for help.