dist/libpcap/mkdep

   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
  16 PATH=/bin:/usr/bin:/usr/ucb:/usr/local:/usr/local/bin
  17 export PATH
  18
  19 MAKE=Makefile                   # default makefile name is "Makefile"
  20 CC=cc                           # default C compiler is "cc"
  21
  22 while :
  23         do case "$1" in
  24                 # -c allows you to specify the C compiler
  25                 -c)
  26                         CC=$2
  27                         shift; shift ;;
  28
  29                 # -f allows you to select a makefile name
  30                 -f)
  31                         MAKE=$2
  32                         shift; shift ;;
  33
  34                 # the -p flag produces "program: program.c" style dependencies
  35                 # so .o's don't get produced
  36                 -p)
  37                         SED='s;\.o;;'
  38                         shift ;;
  39                 *)
  40                         break ;;
  41         esac
  42 done
  43
  44 if [ $# = 0 ] ; then
  45         echo 'usage: mkdep [-p] [-c cc] [-f makefile] [flags] file ...'
  46         exit 1
  47 fi
  48
  49 if [ ! -w $MAKE ]; then
  50         echo "mkdep: no writeable file \"$MAKE\""
  51         exit 1
  52 fi
  53
  54 TMP=/tmp/mkdep$$
  55
  56 trap 'rm -f $TMP ; exit 1' 1 2 3 13 15
  57
  58 cp $MAKE ${MAKE}.bak
  59
  60 sed -e '/DO NOT DELETE THIS LINE/,$d' < $MAKE > $TMP
  61
  62 cat << _EOF_ >> $TMP
  63 # DO NOT DELETE THIS LINE -- mkdep uses it.
  64 # DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.
  65
  66 _EOF_
  67
  68 # If your compiler doesn't have -M, add it.  If you can't, the next two
  69 # lines will try and replace the "cc -M".  The real problem is that this
  70 # hack can't deal with anything that requires a search path, and doesn't
  71 # even try for anything using bracket (<>) syntax.
  72 #
  73 # egrep '^#include[     ]*".*"' /dev/null $* |
  74 # sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |
  75
  76 # XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait"
  77 $CC -M $* |
  78 sed "
  79         s; \./; ;g
  80         $SED" |
  81 awk '{
  82         if ($1 != prev) {
  83                 if (rec != "")
  84                         print rec;
  85                 rec = $0;
  86                 prev = $1;
  87         }
  88         else {
  89                 if (length(rec $2) > 78) {
  90                         print rec;
  91                         rec = $0;
  92                 }
  93                 else
  94                         rec = rec " " $2
  95         }
  96 }
  97 END {
  98         print rec
  99 }' >> $TMP
 100
 101 cat << _EOF_ >> $TMP
 102
 103 # IF YOU PUT ANYTHING HERE IT WILL GO AWAY
 104 _EOF_
 105
 106 # copy to preserve permissions
 107 cp $TMP $MAKE
 108 rm -f ${MAKE}.bak $TMP
 109 exit 0