1#!/bin/sh -e
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=$2
49                              shift; shift ;;
50
51                    # other command-line flag
52                    -*)
53                              flags="$flags $1"
54                              shift ;;
55
56                    *)
57                              break ;;
58          esac
59done
60
61if [ $# = 0 ] ; then
62          echo 'usage: mkdep [-p] [-c cc] [-f makefile] [-m dependency-cflag] [-s source-directory] [flags] file ...'
63          exit 1
64fi
65
66if [ ! -w "$MAKE" ]; then
67          echo "mkdep: no writeable file \"$MAKE\""
68          exit 1
69fi
70
71TMP=${TMPDIR:-/tmp}/mkdep$$
72
73trap 'rm -f "$TMP" ; exit 1' HUP INT QUIT PIPE TERM
74
75cp "$MAKE" "${MAKE}.bak"
76
77sed -e '/DO NOT DELETE THIS LINE/,$d' < "$MAKE" > "$TMP"
78
79cat << _EOF_ >> "$TMP"
80# DO NOT DELETE THIS LINE -- mkdep uses it.
81# DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.
82
83_EOF_
84
85# If your compiler doesn't have -M, add it.  If you can't, the next two
86# lines will try and replace the "cc -M".  The real problem is that this
87# hack can't deal with anything that requires a search path, and doesn't
88# even try for anything using bracket (<>) syntax.
89#
90# grep -E '^#include[[:blank:]]*".*"' /dev/null $* |
91# sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |
92
93#
94# Construct a list of source files with paths relative to the source directory.
95#
96sources=""
97for srcfile in "$@"
98do
99          sources="$sources $SOURCE_DIRECTORY/$srcfile"
100done
101
102# XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait"
103# $flags and $sources are meant to expand
104# shellcheck disable=SC2086
105"$CC" "$DEPENDENCY_CFLAG" $flags $sources |
106sed "
107          s; \./; ;g
108          $SED" >> "$TMP"
109
110cat << _EOF_ >> "$TMP"
111
112# IF YOU PUT ANYTHING HERE IT WILL GO AWAY
113_EOF_
114
115# copy to preserve permissions
116cp "$TMP" "$MAKE"
117rm -f "${MAKE}.bak" "$TMP"
118exit 0
119