The Tcpdump Group git mirrors - libpcap/blob - pcap-config.in

   1 #! /bin/sh
   2
   3 #
   4 # Script to give the appropriate compiler flags and linker flags
   5 # to use when building code that uses libpcap.
   6 #
   7 # These variables come from the configure script, so includedir and
   8 # libdir may be defined in terms of prefix and exec_prefix, so the
   9 # latter must be defined as well.
  10 #
  11 prefix="@prefix@"
  12 exec_prefix="@exec_prefix@"
  13 includedir="@includedir@"
  14 libdir="@libdir@"
  15 LIBS="@LIBS@"
  16 LIBS_STATIC="@LIBS_STATIC@"
  17 VERSION="@PACKAGE_VERSION@"
  18
  19 usage()
  20 {
  21         echo "Usage: pcap-config [ --help ] [ --version ] [ --cflags ]"
  22         echo "                   [ --libs | --additional-libs ]"
  23         echo "                   [ --static | --static-pcap-only ]"
  24 }
  25
  26 static=0
  27 static_pcap_only=0
  28 show_cflags=0
  29 show_libs=0
  30 show_additional_libs=0
  31 while [ "$#" != 0 ]
  32 do
  33         case "$1" in
  34
  35         --static)
  36                 static=1
  37                 ;;
  38
  39         --static-pcap-only)
  40                 static_pcap_only=1
  41                 ;;
  42
  43         --cflags)
  44                 show_cflags=1
  45                 ;;
  46
  47         --libs)
  48                 show_libs=1
  49                 ;;
  50
  51         --additional-libs)
  52                 show_additional_libs=1
  53                 ;;
  54
  55         -h|--help)
  56                 usage
  57                 exit 0
  58                 ;;
  59
  60         --version)
  61                 echo "$VERSION"
  62                 exit 0
  63                 ;;
  64
  65         *)
  66                 echo "pcap-config: Invalid command-line option $1 specified" 1>&2
  67                 usage 1>&2
  68                 exit 1
  69                 ;;
  70         esac
  71         shift
  72 done
  73
  74 #
  75 # If we aren't installing in /usr, then provide a -L flag to let build
  76 # processes find our library.
  77 #
  78 # (We must check $prefix, as $libdir isn't necessarily /usr/lib in this
  79 # case - for example, Linux distributions for 64-bit platforms that
  80 # also provide support for binaries for a 32-bit version of the
  81 # platform may put the 64-bit libraries, the 32-bit libraries, or both
  82 # in directories other than /usr/lib.)
  83 #
  84 if [ "$prefix" != "/usr" ]
  85 then
  86         LPATH=-L$libdir
  87 fi
  88 if [ "$static" = 1 ]
  89 then
  90         #
  91         # Include LIBS_STATIC so that the flags include libraries
  92         # containing routines that libpcap uses, and libraries
  93         # containing routines those libraries use, etc., so that a
  94         # completely statically linked program - i.e., linked only with
  95         # static libraries - will be linked with all necessary
  96         # libraries.
  97         #
  98         if [ "$show_cflags" = 1 -a "$show_libs" = 1 ]
  99         then
 100                 echo "-I$includedir $LPATH -l@PACKAGE_NAME@ $LIBS_STATIC"
 101         elif [ "$show_cflags" = 1 -a "$show_additional_libs" = 1 ]
 102         then
 103                 echo "-I$includedir $LPATH $LIBS_STATIC"
 104         elif [ "$show_cflags" = 1 ]
 105         then
 106                 echo "-I$includedir"
 107         elif [ "$show_libs" = 1 ]
 108         then
 109                 echo "$LPATH -l@PACKAGE_NAME@ $LIBS_STATIC"
 110         elif [ "$show_additional_libs" = 1 ]
 111         then
 112                 echo "$LIBS_STATIC"
 113         fi
 114 elif [ "$static_pcap_only" = 1 ]
 115 then
 116         #
 117         # Include LIBS so that the flags include libraries
 118         # containing routines that libpcap uses, but not the libraries
 119         # on which libpcap depends, so that an otherwise
 120         # dynamically-linked program, linked statically only with
 121         # libpcap - i.e., linked with a static libpcap and dynamic
 122         # versions of other libraries - will be linked with all
 123         # necessary libraries.
 124         #
 125         if [ "$show_cflags" = 1 -a "$show_libs" = 1 ]
 126         then
 127                 echo "-I$includedir $LPATH -l@PACKAGE_NAME@ $LIBS"
 128         elif [ "$show_cflags" = 1 -a "$show_additional_libs" = 1 ]
 129         then
 130                 echo "-I$includedir $LPATH $LIBS"
 131         elif [ "$show_cflags" = 1 ]
 132         then
 133                 echo "-I$includedir"
 134         elif [ "$show_libs" = 1 ]
 135         then
 136                 echo "$LPATH -l@PACKAGE_NAME@ $LIBS"
 137         elif [ "$show_additional_libs" = 1 ]
 138         then
 139                 echo "$LIBS"
 140         fi
 141 else
 142         #
 143         # Don't included LIBS or LIBS_STATIC, for building a program
 144         # with a dynamic libpcap; libpcap, being a dynamic library, will
 145         # cause all of its dynamic-library dependencies to be pulled in
 146         # at run time.
 147         #
 148         # Do, however, include RPATH, to make sure that, on platforms
 149         # that require this, programs built with this version of
 150         # libpcap can find it at run time.
 151         #
 152         if [ "$show_cflags" = 1 -a "$show_libs" = 1 ]
 153         then
 154                 echo "-I$includedir $LPATH @RPATH@ -l@PACKAGE_NAME@"
 155         elif [ "$show_cflags" = 1 -a "$show_additional_libs" = 1 ]
 156         then
 157                 echo "-I$includedir"
 158         elif [ "$show_cflags" = 1 ]
 159         then
 160                 echo "-I$includedir"
 161         elif [ "$show_libs" = 1 ]
 162         then
 163                 echo "$LPATH @RPATH@ -l@PACKAGE_NAME@"
 164         fi
 165 fi