To install the wakeup program on OpenBSD it is sufficient to install the
libnet-1.1 port and type make followed by make install.

If the program is to be installed on another operating system the Makefile
has to be modified as OpenBSD enables the parallel installation of the old
deprecated libnet-1.0.2 and the current stable libnet-1.1.1.

Change the lines specifying the variables PREFIX and LIBNET_CONFIG according
to the required pathnames and the name of the libnet-config executeable.

MacOS X needs a special treatment if the libnet is installed via fink
(http://fink.sourceforge.net/).
The program libnet-config does not print out the path information, and so
the compiler and linker won't find the include files or libraries. If the
libnet is installed under the path /sw/ the additions for the Makefile would
look like the following two lines:

CFLAGS += -I/sw/include
LDFLAGS += -L/sw/lib
