stacktrace.o: stacktrace.c /usr/include/stdio.h /usr/include/sys/cdefs.h \
  /usr/include/machine/cdefs.h /usr/include/sys/cdefs_elf.h \
  /usr/include/sys/featuretest.h /usr/include/sys/ansi.h \
  /usr/include/machine/ansi.h /usr/include/machine/int_types.h \
  /usr/include/sys/null.h /usr/include/string.h /usr/include/strings.h