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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=$2
     49 			shift; shift ;;
     50 
     51 		# -include takes an argument
     52 		-include)
     53 			flags="$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
     64 done
     65 
     66 if [ $# = 0 ] ; then
     67 	echo 'usage: mkdep [-p] [-c cc] [-f makefile] [-m dependency-cflag] [-s source-directory] [flags] file ...'
     68 	exit 1
     69 fi
     70 
     71 if [ ! -w "$MAKE" ]; then
     72 	echo "mkdep: no writeable file \"$MAKE\""
     73 	exit 1
     74 fi
     75 
     76 TMP=${TMPDIR:-/tmp}/mkdep$$
     77 
     78 trap 'rm -f "$TMP" ; exit 1' HUP INT QUIT PIPE TERM
     79 
     80 cp "$MAKE" "${MAKE}.bak"
     81 
     82 sed -e '/DO NOT DELETE THIS LINE/,$d' < "$MAKE" > "$TMP"
     83 
     84 cat << _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 # grep -E '^#include[[:blank:]]*".*"' /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 #
    101 sources=""
    102 for srcfile in "$@"
    103 do
    104 	sources="$sources $SOURCE_DIRECTORY/$srcfile"
    105 done
    106 
    107 # XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait"
    108 # $flags and $sources are meant to expand
    109 # shellcheck disable=SC2086
    110 "$CC" "$DEPENDENCY_CFLAG" $flags $sources |
    111 sed "
    112 	s; \./; ;g
    113 	$SED" >> "$TMP"
    114 
    115 cat << _EOF_ >> "$TMP"
    116 
    117 # IF YOU PUT ANYTHING HERE IT WILL GO AWAY
    118 _EOF_
    119 
    120 # copy to preserve permissions
    121 cp "$TMP" "$MAKE"
    122 rm -f "${MAKE}.bak" "$TMP"
    123 exit 0
    124