contrib/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:/usr/sfw/bin
  17 export PATH
  18
  19 MAKE=Makefile                   # default makefile name is "Makefile"
  20 CC=cc                           # default C compiler is "cc"
  21 DEPENDENCY_CFLAG=-M             # default dependency-generation flag is -M
  22
  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                         break ;;
  47         esac
  48 done
  49
  50 if [ $# = 0 ] ; then
  51         echo 'usage: mkdep [-p] [-c cc] [-f makefile] [-m dependency-cflag] [flags] file ...'
  52         exit 1
  53 fi
  54
  55 if [ ! -w $MAKE ]; then
  56         echo "mkdep: no writeable file \"$MAKE\""
  57         exit 1
  58 fi
  59
  60 TMP=/tmp/mkdep$$
  61
  62 trap 'rm -f $TMP ; exit 1' 1 2 3 13 15
  63
  64 cp $MAKE ${MAKE}.bak
  65
  66 sed -e '/DO NOT DELETE THIS LINE/,$d' < $MAKE > $TMP
  67
  68 cat << _EOF_ >> $TMP
  69 # DO NOT DELETE THIS LINE -- mkdep uses it.
  70 # DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.
  71
  72 _EOF_
  73
  74 # If your compiler doesn't have -M, add it.  If you can't, the next two
  75 # lines will try and replace the "cc -M".  The real problem is that this
  76 # hack can't deal with anything that requires a search path, and doesn't
  77 # even try for anything using bracket (<>) syntax.
  78 #
  79 # egrep '^#include[     ]*".*"' /dev/null $* |
  80 # sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |
  81
  82 # XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait"
  83 $CC $DEPENDENCY_CFLAG $* |
  84 sed "
  85         s; \./; ;g
  86         $SED" |
  87 awk '{
  88         if ($1 != prev) {
  89                 if (rec != "")
  90                         print rec;
  91                 rec = $0;
  92                 prev = $1;
  93         }
  94         else {
  95                 if (length(rec $2) > 78) {
  96                         print rec;
  97                         rec = $0;
  98                 }
  99                 else
 100                         rec = rec " " $2
 101         }
 102 }
 103 END {
 104         print rec
 105 }' >> $TMP
 106
 107 cat << _EOF_ >> $TMP
 108
 109 # IF YOU PUT ANYTHING HERE IT WILL GO AWAY
 110 _EOF_
 111
 112 # copy to preserve permissions
 113 cp $TMP $MAKE
 114 rm -f ${MAKE}.bak $TMP
 115 exit 0