getopt() under BSD4.2

[Edward R Scheinerman]

I recently wrote a C program which calls getopt() under Unix System V.
I sent the code to a friend who cannot compile it because he has BSD 4.2.
Is the source code for getopt() public domain? If so where can I get a
hold of a copy? Any other suggestions on how to fix this up? Thanks!

-Ed Scheinerman
 msc_wers at jhunix	Department of Mathematical Sciences
 301-338-7210		The Johns Hopkins University
			Baltimore, Maryland 21218 USA