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