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