#!/bin/sh -

#

# Copyright (c) 1994, 1996

#	The Regents of the University of California.  All rights reserved.

#

# Redistribution and use in source and binary forms are permitted

# provided that this notice is preserved and that due credit is given

# to the University of California at Berkeley. The name of the University

# may not be used to endorse or promote products derived from this

# software without specific prior written permission. This software

# is provided ``as is'' without express or implied warranty.

#

#	@(#)mkdep.sh	5.11 (Berkeley) 5/5/88

#

MAKE=Makefile			# default makefile name is "Makefile"

CC=cc				# default C compiler is "cc"

DEPENDENCY_CFLAG=-M		# default dependency-generation flag is -M

while :

	do case "$1" in

		# -c allows you to specify the C compiler

		-c)

			CC=$2

			shift; shift ;;

		# -f allows you to select a makefile name

		-f)

			MAKE=$2

			shift; shift ;;

		# -m allows you to specify the dependency-generation flag

		-m)

			DEPENDENCY_CFLAG=$2

			shift; shift ;;

		# the -p flag produces "program: program.c" style dependencies

		# so .o's don't get produced

		-p)

			SED='s;\.o;;'

			shift ;;

		*)

			break ;;

	esac

done

if [ $# = 0 ] ; then

	echo 'usage: mkdep [-p] [-c cc] [-f makefile] [-m dependency-cflag] [flags] file ...'

	exit 1

fi

if [ ! -w $MAKE ]; then

	echo "mkdep: no writeable file \"$MAKE\""

	exit 1

fi

TMP=/tmp/mkdep$$

trap 'rm -f $TMP ; exit 1' 1 2 3 13 15

cp $MAKE ${MAKE}.bak

sed -e '/DO NOT DELETE THIS LINE/,$d' < $MAKE > $TMP

cat << _EOF_ >> $TMP

# DO NOT DELETE THIS LINE -- mkdep uses it.

# DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.

_EOF_

# If your compiler doesn't have -M, add it.  If you can't, the next two

# lines will try and replace the "cc -M".  The real problem is that this

# hack can't deal with anything that requires a search path, and doesn't

# even try for anything using bracket (<>) syntax.

#

# egrep '^#include[ 	]*".*"' /dev/null $* |

# sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |

# XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait"

$CC $DEPENDENCY_CFLAG $* |

sed "

	s; \./; ;g

	$SED" |

awk '{

	if ($1 != prev) {

		if (rec != "")

			print rec;

		rec = $0;

		prev = $1;

	}

	else {

		if (length(rec $2) > 78) {

			print rec;

			rec = $0;

		}

		else

			rec = rec " " $2

	}

}

END {

	print rec

}' >> $TMP

cat << _EOF_ >> $TMP

# IF YOU PUT ANYTHING HERE IT WILL GO AWAY

_EOF_

# copy to preserve permissions

cp $TMP $MAKE

rm -f ${MAKE}.bak $TMP

exit 0