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      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 
     16 MAKE=Makefile			# default makefile name is "Makefile"
     17 CC=cc				# default C compiler is "cc"
     18 DEPENDENCY_CFLAG=-M		# default dependency-generation flag is -M
     19 SOURCE_DIRECTORY=.		# default source directory is the current directory
     20 
     21 # No command-line flags seen yet.
     22 flags=""
     23 while :
     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
     59 done
     60 
     61 if [ $# = 0 ] ; then
     62 	echo 'usage: mkdep [-p] [-c cc] [-f makefile] [-m dependency-cflag] [-s source-directory] [flags] file ...'
     63 	exit 1
     64 fi
     65 
     66 if [ ! -w "$MAKE" ]; then
     67 	echo "mkdep: no writeable file \"$MAKE\""
     68 	exit 1
     69 fi
     70 
     71 TMP=${TMPDIR:-/tmp}/mkdep$$
     72 
     73 trap 'rm -f "$TMP" ; exit 1' HUP INT QUIT PIPE TERM
     74 
     75 cp "$MAKE" "${MAKE}.bak"
     76 
     77 sed -e '/DO NOT DELETE THIS LINE/,$d' < "$MAKE" > "$TMP"
     78 
     79 cat << _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 #
     96 sources=""
     97 for srcfile in "$@"
     98 do
     99 	sources="$sources $SOURCE_DIRECTORY/$srcfile"
    100 done
    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 |
    106 sed "
    107 	s; \./; ;g
    108 	$SED" >> "$TMP"
    109 
    110 cat << _EOF_ >> "$TMP"
    111 
    112 # IF YOU PUT ANYTHING HERE IT WILL GO AWAY
    113 _EOF_
    114 
    115 # copy to preserve permissions
    116 cp "$TMP" "$MAKE"
    117 rm -f "${MAKE}.bak" "$TMP"
    118 exit 0
    119