早期freebsd实现

				CC=cc				COMFLAGS=-O				BIN=/usr/bin				MAN=/usr/man/man1				#define to "l" if manuals go on /usr/man/manl				L=1								all :	compress atob btoa								compress : compress.c USERMEM					$(CC) $(COMFLAGS) -DUSERMEM=`cat USERMEM` -o compress compress.c								# USERMEM may have to be set by hand.  It should contain the amount of				# available user memory in bytes.  See the README file for more info.				USERMEM:					sh usermem > USERMEM								atob:	atob.c					$(CC) $(COMFLAGS) -o atob atob.c								btoa:	btoa.c					$(CC) $(COMFLAGS) -o btoa btoa.c								install: compress atob btoa zmore zcmp zdiff compressdir uncompressdir btoa.1 compress.1 compressdir.1 zmore.1 zcmp.1 tarmail untarmail					cp compress $(BIN)					rm -f $(BIN)/uncompress $(BIN)/zcat					ln $(BIN)/compress $(BIN)/uncompress					ln $(BIN)/compress $(BIN)/zcat					cp zmore zcmp zdiff compressdir uncompressdir $(BIN)					cp atob btoa tarmail untarmail $(BIN)					cp btoa.1 $(MAN)/btoa.$(L)					rm -f $(MAN)/atob.$(L) $(MAN)/tarmail.$(L) $(MAN)/untarmail.$(L)					ln $(MAN)/btoa.$(L) $(MAN)/atob.$(L)					ln $(MAN)/btoa.$(L) $(MAN)/tarmail.$(L)					ln $(MAN)/btoa.$(L) $(MAN)/untarmail.$(L)					cp compress.1 $(MAN)/compress.$(L)					rm -f $(MAN)/uncompress.$(L) $(MAN)/zcat.$(L)					ln $(MAN)/compress.$(L) $(MAN)/uncompress.$(L)					ln $(MAN)/compress.$(L) $(MAN)/zcat.$(L)					cp compressdir.1 $(MAN)/compressdir.$(L)					cp zmore.1 $(MAN)/zmore.$(L)					cp zcmp.1 $(MAN)/zcmp.$(L)					rm -f $(MAN)/zdiff.$(L)					ln $(MAN)/zcmp.$(L) $(MAN)/zdiff.$(L)								clean:					rm -f compress atob btoa