The Tcpdump Group git mirrors - libpcap/blob - mkdep

   1 #!/bin/sh -e
   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=$2
  49                         shift; shift ;;
  50
  51                 # -include takes an argument
  52                 -include)
  53                         flags="$flags $1 $2"
  54                         shift; shift ;;
  55
  56                 # other command-line flag
  57                 -*)
  58                         flags="$flags $1"
  59                         shift ;;
  60
  61                 *)
  62                         break ;;
  63         esac
  64 done
  65
  66 if [ $# = 0 ] ; then
  67         echo 'usage: mkdep [-p] [-c cc] [-f makefile] [-m dependency-cflag] [-s source-directory] [flags] file ...'
  68         exit 1
  69 fi
  70
  71 if [ ! -w "$MAKE" ]; then
  72         echo "mkdep: no writeable file \"$MAKE\""
  73         exit 1
  74 fi
  75
  76 TMP=${TMPDIR:-/tmp}/mkdep$$
  77
  78 trap 'rm -f "$TMP" ; exit 1' HUP INT QUIT PIPE TERM
  79
  80 cp "$MAKE" "${MAKE}.bak"
  81
  82 sed -e '/DO NOT DELETE THIS LINE/,$d' < "$MAKE" > "$TMP"
  83
  84 cat << _EOF_ >> "$TMP"
  85 # DO NOT DELETE THIS LINE -- mkdep uses it.
  86 # DO NOT PUT ANYTHING AFTER THIS LINE, IT WILL GO AWAY.
  87
  88 _EOF_
  89
  90 # If your compiler doesn't have -M, add it.  If you can't, the next two
  91 # lines will try and replace the "cc -M".  The real problem is that this
  92 # hack can't deal with anything that requires a search path, and doesn't
  93 # even try for anything using bracket (<>) syntax.
  94 #
  95 # grep -E '^#include[[:blank:]]*".*"' /dev/null $* |
  96 # sed -e 's/:[^"]*"\([^"]*\)".*/: \1/' -e 's/\.c/.o/' |
  97
  98 #
  99 # Construct a list of source files with paths relative to the source directory.
 100 #
 101 sources=""
 102 for srcfile in "$@"
 103 do
 104         sources="$sources $SOURCE_DIRECTORY/$srcfile"
 105 done
 106
 107 # XXX this doesn't work with things like "-DDECLWAITSTATUS=union\ wait"
 108 # $flags and $sources are meant to expand
 109 # shellcheck disable=SC2086
 110 "$CC" "$DEPENDENCY_CFLAG" $flags $sources |
 111 sed "
 112         s; \./; ;g
 113         $SED" >> "$TMP"
 114
 115 cat << _EOF_ >> "$TMP"
 116
 117 # IF YOU PUT ANYTHING HERE IT WILL GO AWAY
 118 _EOF_
 119
 120 # copy to preserve permissions
 121 cp "$TMP" "$MAKE"
 122 rm -f "${MAKE}.bak" "$TMP"
 123 exit 0