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1#!/bin/sh -
2#
3# Copyright (c) 1994, 1996
4#	The Regents of the University of California.  All rights reserved.
5#
6# Redistribution and use in source and binary forms are permitted
7# provided that this notice is preserved and that due credit is given
8# to the University of California at Berkeley. The name of the University
9# may not be used to endorse or promote products derived from this
10# software without specific prior written permission. This software
11# is provided ``as is'' without express or implied warranty.
12#
13#	@(#)mkdep.sh	5.11 (Berkeley) 5/5/88
14#
15
16MAKE=Makefile			# default makefile name is "Makefile"
17CC=cc				# default C compiler is "cc"
18DEPENDENCY_CFLAG=-M		# default dependency-generation flag is -M
19SOURCE_DIRECTORY=.		# default source directory is the current directory
20
21# No command-line flags seen yet.
22flags=""
23while :
24	do case "$1" in
25		# -c allows you to specify the C compiler
26		-c)
27			CC=$2
28			shift; shift ;;
29
30		# -f allows you to select a makefile name
31		-f)
32			MAKE=$2
33			shift; shift ;;
34
35		# -m allows you to specify the dependency-generation flag
36		-m)
37			DEPENDENCY_CFLAG=$2
38			shift; shift ;;
39
40		# the -p flag produces "program: program.c" style dependencies
41		# so .o's don't get produced
42		-p)
43			SED='s;\.o;;'
44			shift ;;
45
46		# -s allows you to specify the source directory
47		-s)
48			SOURCE_DIRECTORY=$2
49			shift; shift ;;
50
51		# -include takes an argument
52		-include)
53			flags="$flags $1 $2"
54			shift; shift ;;
55
56		# other command-line flag
57		-*)
58			flags="$flags $1"
59			shift ;;
60
61		*)
62			break ;;
63	esac
64done
65
66if [ $# = 0 ] ; then
67	echo 'usage: mkdep [-p] [-c cc] [-f makefile] [-m dependency-cflag] [-s source-directory] [flags] file ...'
68	exit 1
69fi
70
71if [ ! -w $MAKE ]; then
72	echo "mkdep: no writeable file \"$MAKE\""
73	exit 1
74fi
75
76TMP=/tmp/mkdep$$
77
78trap 'rm -f $TMP ; exit 1' 1 2 3 13 15
79
80cp $MAKE ${MAKE}.bak
81
82sed -e '/DO NOT DELETE THIS LINE/,$d' < $MAKE > $TMP
83
84cat << _EOF_ >> $TMP
85# DO NOT DELETE THIS LINE -- mkdep uses it.
86# DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.
87
88_EOF_
89
90# If your compiler doesn't have -M, add it.  If you can't, the next two
91# lines will try and replace the "cc -M".  The real problem is that this
92# hack can't deal with anything that requires a search path, and doesn't
93# even try for anything using bracket (<>) syntax.
94#
95# egrep '^#include[ 	]*".*"' /dev/null $* |
96# sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |
97
98#
99# Construct a list of source files with paths relative to the source directory.
100#
101sources=""
102for srcfile in $*
103do
104	sources="$sources $SOURCE_DIRECTORY/$srcfile"
105done
106
107# XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait"
108$CC $DEPENDENCY_CFLAG $flags $sources |
109sed "
110	s; \./; ;g
111	$SED" |
112awk '{
113	if ($1 != prev) {
114		if (rec != "")
115			print rec;
116		rec = $0;
117		prev = $1;
118	}
119	else {
120		if (length(rec $2) > 78) {
121			print rec;
122			rec = $0;
123		}
124		else
125			rec = rec " " $2
126	}
127}
128END {
129	print rec
130}' >> $TMP
131
132cat << _EOF_ >> $TMP
133
134# IF YOU PUT ANYTHING HERE IT WILL GO AWAY
135_EOF_
136
137# copy to preserve permissions
138cp $TMP $MAKE
139rm -f ${MAKE}.bak $TMP
140exit 0
141