if {$ctest != 0} {

# first, remove the build directories and remake them
nukedir bd
nukedir sd
mkdir bd
mkdir sd

# next, do a full build and check that all files got recompiled
compile_object_pass Top.bsv {} {-bdir bd -p +:bd}
exec sleep 2
link_objects_pass {bd/mkTop.ba} mkTop {-p bd -simdir sd}
move mkTop.bsc-ccomp-out full_build.out
compare_file full_build.out
sim_output mkTop {}
move mkTop.out full_sim.out
compare_file full_sim.out sim.out.expected

# then, touch one source file and recompile
touch Sub1.bsv

# recompile and check that only the correct files got recompiled
compile_object_pass Top.bsv {} {-bdir bd -p +:bd}
exec sleep 2
link_objects_pass {bd/mkTop.ba} mkTop {-p bd -simdir sd}
move mkTop.bsc-ccomp-out partial_build.out
compare_file partial_build.out
sim_output mkTop {}
move mkTop.out partial_sim.out
compare_file partial_sim.out sim.out.expected

# then recompile without changing anything
compile_object_pass Top.bsv {} {-bdir bd -p +:bd}
exec sleep 2
link_objects_pass {bd/mkTop.ba} mkTop {-p bd -simdir sd}
move mkTop.bsc-ccomp-out reused_build.out
compare_file reused_build.out
sim_output mkTop {}
move mkTop.out reused_sim.out
compare_file reused_sim.out sim.out.expected

}