util/mdepend.cpp

   1 XCOMM!/bin/sh
   2 XCOMM
   3 XCOMM $TOG: mdepend.cpp /main/13 1997/06/20 21:12:18 kaleb $
   4 XCOMM
   5 XCOMM   Do the equivalent of the 'makedepend' program, but do it right.
   6 XCOMM
   7 XCOMM   Usage:
   8 XCOMM
   9 XCOMM   makedepend [cpp-flags] [-w width] [-s magic-string] [-f makefile]
  10 XCOMM     [-o object-suffix]
  11 XCOMM
  12 XCOMM   Notes:
  13 XCOMM
  14 XCOMM   The C compiler used can be overridden with the environment
  15 XCOMM   variable "CC".
  16 XCOMM
  17 XCOMM   The "-v" switch of the "makedepend" program is not supported.
  18 XCOMM
  19 XCOMM
  20 XCOMM   This script should
  21 XCOMM   work on both USG and BSD systems.  However, when System V.4 comes out,
  22 XCOMM   USG users will probably have to change "silent" to "-s" instead of
  23 XCOMM   "-" (at least, that is what the documentation implies).
  24 XCOMM
  25 CC=PREPROC
  26
  27 silent='-'
  28
  29 TMP=/tmp/mdep$$
  30 CPPCMD=${TMP}a
  31 DEPENDLINES=${TMP}b
  32 TMPMAKEFILE=${TMP}c
  33 MAGICLINE=${TMP}d
  34 ARGS=${TMP}e
  35
  36 trap "rm -f ${TMP}*; exit 1" 1 2 15
  37 trap "rm -f ${TMP}*; exit 0" 1 2 13
  38
  39 echo " \c" > $CPPCMD
  40 if [ `wc -c < $CPPCMD` -eq 1 ]
  41 then
  42     c="\c"
  43     n=
  44 else
  45     c=
  46     n="-n"
  47 fi
  48
  49 echo $n "$c" >$ARGS
  50
  51 files=
  52 makefile=
  53 magic_string='# DO NOT DELETE'
  54 objsuffix='.o'
  55 width=78
  56 endmarker=""
  57 verbose=n
  58 append=n
  59
  60 while [ $# != 0 ]
  61 do
  62     if [ "$endmarker"x != x ] && [ "$endmarker" = "$1" ]; then
  63         endmarker=""
  64     else
  65         case "$1" in
  66             -D*|-I*)
  67                 echo $n " '$1'$c" >> $ARGS
  68                 ;;
  69
  70             -g|-O)      # ignore so we can just pass $(CFLAGS) in
  71                 ;;
  72
  73             *)
  74                 if [ "$endmarker"x = x ]; then
  75                     case "$1" in
  76                         -w)
  77                             width="$2"
  78                             shift
  79                             ;;
  80                         -s)
  81                             magic_string="$2"
  82                             shift
  83                             ;;
  84                         -f*)
  85                             if [ "$1" = "-f-" ]; then
  86                                 makefile="-"
  87                             else
  88                                 makefile="$2"
  89                                 shift
  90                             fi
  91                             ;;
  92                         -o)
  93                             objsuffix="$2"
  94                             shift
  95                             ;;
  96
  97                         --*)
  98                             echo "$1" | sed 's/^\-\-//' >${TMP}end
  99                             endmarker="`cat ${TMP}end`"
 100                             rm -f ${TMP}end
 101                             if [ "$endmarker"x = x ]; then
 102                                 endmarker="--"
 103                             fi
 104                             ;;
 105                         -v)
 106                             verbose="y"
 107                             ;;
 108
 109                         -a)
 110                             append="y"
 111                             ;;
 112
 113                         -cc)
 114                             CC="$2"
 115                             shift
 116                             ;;
 117
 118                         -*)
 119                             echo "Unknown option '$1' ignored" 1>&2
 120                             ;;
 121                         *)
 122                             files="$files $1"
 123                             ;;
 124                     esac
 125                 fi
 126                 ;;
 127         esac
 128     fi
 129     shift
 130 done
 131 echo ' $*' >> $ARGS
 132
 133 echo "#!/bin/sh" > $CPPCMD
 134 echo "exec $CC `cat $ARGS`" >> $CPPCMD
 135 chmod +x $CPPCMD
 136 rm $ARGS
 137
 138 case "$makefile" in
 139     '')
 140         if [ -r makefile ]
 141         then
 142             makefile=makefile
 143         elif [ -r Makefile ]
 144         then
 145             makefile=Makefile
 146         else
 147             echo 'no makefile or Makefile found' 1>&2
 148             exit 1
 149         fi
 150         ;;
 151     -)
 152         makefile=$TMPMAKEFILE
 153         ;;
 154 esac
 155
 156 if [ "$verbose"x = "y"x ]; then
 157     cat $CPPCMD
 158 fi
 159
 160 echo '' > $DEPENDLINES
 161 for i in $files
 162 do
 163     $CPPCMD $i \
 164       | sed -n "/^#/s;^;$i ;p"
 165 done \
 166   | sed -e 's|/[^/.][^/]*/\.\.||g' -e 's|/\.[^.][^/]*/\.\.||g' \
 167     -e 's|"||g' -e 's| \./| |' \
 168   | awk '{
 169         if ($1 != $4  &&  $2 != "#ident" && $2 != "#pragma")
 170             {
 171             ofile = substr ($1, 1, length ($1) - 2) "'"$objsuffix"'"
 172             print ofile, $4
 173             }
 174         }' \
 175   | sort -u \
 176   | awk '
 177             {
 178             newrec = rec " " $2
 179             if ($1 != old1)
 180                 {
 181                 old1 = $1
 182                 if (rec != "")
 183                     print rec
 184                 rec = $1 ": " $2
 185                 }
 186             else if (length (newrec) > '"$width"')
 187                 {
 188                 print rec
 189                 rec = $1 ": " $2
 190                 }
 191             else
 192                 rec = newrec
 193             }
 194         END \
 195             {
 196             if (rec != "")
 197                 print rec
 198             }' \
 199   | egrep -v '^[^:]*:[  ]*$' >> $DEPENDLINES
 200
 201 trap "" 1 2 13 15       # Now we are committed
 202 case "$makefile" in
 203     $TMPMAKEFILE)
 204         ;;
 205     *)
 206         rm -f $makefile.bak
 207         cp $makefile $makefile.bak
 208         echo "Appending dependencies to $makefile"
 209         ;;
 210 esac
 211
 212 XCOMM
 213 XCOMM If not -a, append the magic string and a blank line so that
 214 XCOMM /^$magic_string/+1,\$d can be used to delete everything from after
 215 XCOMM the magic string to the end of the file.  Then, append a blank
 216 XCOMM line again and then the dependencies.
 217 XCOMM
 218 if [ "$append" = "n" ]
 219 then
 220     cat >> $makefile << END_OF_APPEND
 221
 222 $magic_string
 223
 224 END_OF_APPEND
 225     ed $silent $makefile << END_OF_ED_SCRIPT
 226 /^$magic_string/+1,\$d
 227 w
 228 q
 229 END_OF_ED_SCRIPT
 230     echo '' >>$makefile
 231 fi
 232
 233 cat $DEPENDLINES >>$makefile
 234
 235 case "$makefile" in
 236     $TMPMAKEFILE)
 237         cat $TMPMAKEFILE
 238         ;;
 239
 240 esac
 241
 242 rm -f ${TMP}*
 243 exit 0