Hello Everyone, 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 get linked here, including libfoo.a> Now, when I run the executable, the *.da files are not getting created. Is there a step that I am missing? Does anyone have any suggestions? Thanks, Ryan