The Tcpdump Group git mirrors - tcpdump/blob - 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 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=$2
  49                         shift; shift ;;
  50
  51                 # other command-line flag
  52                 -*)
  53                         flags="$flags $1"
  54                         shift ;;
  55
  56                 *)
  57                         break ;;
  58         esac
  59 done
  60
  61 if [ $# = 0 ] ; then
  62         echo 'usage: mkdep [-p] [-c cc] [-f makefile] [-m dependency-cflag] [-s source-directory] [flags] file ...'
  63         exit 1
  64 fi
  65
  66 if [ ! -w $MAKE ]; then
  67         echo "mkdep: no writeable file \"$MAKE\""
  68         exit 1
  69 fi
  70
  71 TMP=/tmp/mkdep$$
  72
  73 trap 'rm -f $TMP ; exit 1' 1 2 3 13 15
  74
  75 cp $MAKE ${MAKE}.bak
  76
  77 sed -e '/DO NOT DELETE THIS LINE/,$d' < $MAKE > $TMP
  78
  79 cat << _EOF_ >> $TMP
  80 # DO NOT DELETE THIS LINE -- mkdep uses it.
  81 # DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.
  82
  83 _EOF_
  84
  85 # If your compiler doesn't have -M, add it.  If you can't, the next two
  86 # lines will try and replace the "cc -M".  The real problem is that this
  87 # hack can't deal with anything that requires a search path, and doesn't
  88 # even try for anything using bracket (<>) syntax.
  89 #
  90 # egrep '^#include[     ]*".*"' /dev/null $* |
  91 # sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |
  92
  93 #
  94 # Construct a list of source files with paths relative to the source directory.
  95 #
  96 sources=""
  97 for srcfile in $*
  98 do
  99         sources="$sources $SOURCE_DIRECTORY/$srcfile"
 100 done
 101
 102 # XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait"
 103 $CC $DEPENDENCY_CFLAG $flags $sources |
 104 sed "
 105         s; \./; ;g
 106         $SED" |
 107 awk '{
 108         if ($1 != prev) {
 109                 if (rec != "")
 110                         print rec;
 111                 rec = $0;
 112                 prev = $1;
 113         }
 114         else {
 115                 if (length(rec $2) > 78) {
 116                         print rec;
 117                         rec = $0;
 118                 }
 119                 else
 120                         rec = rec " " $2
 121         }
 122 }
 123 END {
 124         print rec
 125 }' >> $TMP
 126
 127 cat << _EOF_ >> $TMP
 128
 129 # IF YOU PUT ANYTHING HERE IT WILL GO AWAY
 130 _EOF_
 131
 132 # copy to preserve permissions
 133 cp $TMP $MAKE
 134 rm -f ${MAKE}.bak $TMP
 135 exit 0