NAME
	make

SYNOPSIS
	make [filename]

DESCRIPTION
	MAKE performs the necessary actions to generate an updated
	version of the specified file when some of the files on which
	it depends have been changed.  The dependency relationships and
	the required actions are described in the text file MKFILE,
	as in the following...
                                             
		#
		# make file using DeSmet compiler
		#
		try.exe:	try.o
				bind try exec

		try.o:		try.c
				c88 try

		try.c:

		make.exe:	make.o
				bind make exec

		make.o:		make.c
				c88 make

		make.c:

	All the blank lines are required.  Lines starting with '#' are
	comments.  Otherwise, MKFILE consists of a series of blocks.  Each
	block is a dependency line followed by zero or more action lines
	followed by a blank line.  A dependency line has a target file
	name, a colon, and a list of the files on which the target file
	depends.  Whitespace (blanks or tabs) can be added for clarity. 
	Any line can be continued by ending it with '\'.

	MAKE will find the block in MKFILE which has the specified file
	as a target and record its dependencies and actions.  It will
	repeat this recursively for each dependent file.  It will then
	check the create times and dates of the files.  If any
	dependent files is newer than the corresponding target file,
	the actions which follow will be performed.  MAKE then updates
	the create times and repeats for the other blocks.

	If no filename is specified on the command line, MAKE will make
	the first file in MKFILE.

	There are several restrictions not present in the Unix facility
	of the same name.  All dependent files must appear somewhere
	else as target files.  That's why the null entries for try.c
	and make.c appear above.  The blocks must be separated by blank
	lines.

BUGS
	The DeSmet library doesn't include the function system() used by
	Holub, so I wrote the one included here.  It uses the PATH just
	like COMMAND.COM.  It will find either .COM or .EXE files, but
	can't run .BAT files.

AUTHOR
	Written by Allen I.  Holub (published in Dr.  Dobb's Journal
	#106, August 1985)

	system() and envsearch() added by James R. Van Zandt.