GCov and GCC, *.da Files Not Created

Question

I am using GCC version 3.3.6. When I instrument my object files with -fprofile-arcs and -ftest-coverage, the appropriate *.bb and *.bbg files are created.

The object files are then linked together into a static library libfoo.a with:
ar rcs libfoo.a foo1.o foo2.o.

Finally, a series of static libraries are linked together to create my executable with:
gcc -fprofile-arcs -o foo.o <static libraries linked all>

Now, when I run the image, the *.da files are not getting created. Is there a step that I am missing? Does anyone have any other suggestions?

Thanks.