cc -O -bsd -c derivative.c
cc derivative.o  /carl/lib/libcarl.a -lm -o derivative
ld: warning: table of contents for archive: /carl/lib/libcarl.a is out of date; rerun ranlib(1)
cc -O -bsd -c energy.c
cc energy.o  /carl/lib/libcarl.a -lm -o energy
ld: warning: table of contents for archive: /carl/lib/libcarl.a is out of date; rerun ranlib(1)
Undefined symbols:
 _polish

*** Exit 1
Stop.
