make
./athenb
./athenb_hidden
./athenb_hidden_last
Confirm that both "Hello from scipy_a" and "Hello from scipy_b" is printed when athenb_hidden/athenb_hidden_last is run (and just "Hello from scipy_a" printed twice when athenb is run).
Untested!
make -f Makefile.osx
./athenb
./athenb_hidden
./athenb_hidden_last
Interested in the result!