cmulocal/libpcap.m4

   1 dnl libpcap.m4--PCAP libraries and includes
   2 dnl Derrick Brashear
   3 dnl from KTH krb and Arla
   4 dnl $Id: libpcap.m4,v 1.9 2005/04/26 19:14:08 shadow Exp $
   5
   6 AC_DEFUN([CMU_PCAP_INC_WHERE1], [
   7 ac_cv_found_pcap_inc=no
   8 if test -f "$1/pcap.h" ; then
   9   ac_cv_found_pcap_inc=yes
  10 fi
  11 ])
  12
  13 AC_DEFUN([CMU_PCAP_INC_WHERE], [
  14    for i in $1; do
  15       AC_MSG_CHECKING(for pcap header in $i)
  16       CMU_PCAP_INC_WHERE1($i)
  17       if test "$ac_cv_found_pcap_inc" = "yes"; then
  18         ac_cv_pcap_where_inc=$i
  19         AC_MSG_RESULT(found)
  20         break
  21       else
  22         AC_MSG_RESULT(no found)
  23       fi
  24     done
  25 ])
  26
  27 AC_DEFUN([CMU_PCAP_LIB_WHERE1], [
  28 saved_LIBS=$LIBS
  29 LIBS="$saved_LIBS -L$1 -lpcap"
  30 AC_TRY_LINK(,
  31 [pcap_lookupdev("");],
  32 [ac_cv_found_pcap_lib=yes],
  33 ac_cv_found_pcap_lib=no)
  34 LIBS=$saved_LIBS
  35 ])
  36
  37 AC_DEFUN([CMU_PCAP_LIB_WHERE], [
  38    for i in $1; do
  39       AC_MSG_CHECKING(for pcap library in $i)
  40       CMU_PCAP_LIB_WHERE1($i)
  41       CMU_TEST_LIBPATH($i, pcap)
  42       if test "$ac_cv_found_pcap_lib" = "yes" ; then
  43         ac_cv_pcap_where_lib=$i
  44         AC_MSG_RESULT(found)
  45         break
  46       else
  47         AC_MSG_RESULT(no found)
  48       fi
  49     done
  50 ])
  51
  52 AC_DEFUN([CMU_PCAP], [
  53 AC_REQUIRE([CMU_FIND_LIB_SUBDIR])
  54 AC_ARG_WITH(pcap,
  55         [  --with-pcap=PREFIX      Compile with PCAP support],
  56         [if test "X$with_pcap" = "X"; then
  57                 with_pcap=yes
  58         fi])
  59 AC_ARG_WITH(pcap-lib,
  60         [  --with-pcap-lib=dir     use pcap libraries in dir],
  61         [if test "$withval" = "yes" -o "$withval" = "no"; then
  62                 AC_MSG_ERROR([No argument for --with-pcap-lib])
  63         fi])
  64 AC_ARG_WITH(pcap-include,
  65         [  --with-pcap-include=dir use pcap headers in dir],
  66         [if test "$withval" = "yes" -o "$withval" = "no"; then
  67                 AC_MSG_ERROR([No argument for --with-pcap-include])
  68         fi])
  69
  70         if test "X$with_pcap" != "X"; then
  71           if test "$with_pcap" != "yes"; then
  72             ac_cv_pcap_where_lib=$with_pcap/$CMU_LIB_SUBDIR
  73             ac_cv_pcap_where_inc=$with_pcap/include
  74           fi
  75         fi
  76
  77         if test "X$with_pcap_lib" != "X"; then
  78           ac_cv_pcap_where_lib=$with_pcap_lib
  79         fi
  80         if test "X$ac_cv_pcap_where_lib" = "X"; then
  81           CMU_PCAP_LIB_WHERE(/usr/ng/$CMU_LIB_SUBDIR /usr/$CMU_LIB_SUBDIR /usr/local/$CMU_LIB_SUBDIR)
  82         fi
  83
  84         if test "X$with_pcap_include" != "X"; then
  85           ac_cv_pcap_where_inc=$with_pcap_include
  86         fi
  87         if test "X$ac_cv_pcap_where_inc" = "X"; then
  88           CMU_PCAP_INC_WHERE(/usr/ng/include /usr/include /usr/local/include)
  89         fi
  90
  91         AC_MSG_CHECKING(whether to include pcap)
  92         if test "X$ac_cv_pcap_where_lib" = "X" -a "X$ac_cv_pcap_where_inc" = "X"; then
  93           ac_cv_found_pcap=no
  94           AC_MSG_RESULT(no)
  95         else
  96           ac_cv_found_pcap=yes
  97           AC_MSG_RESULT(yes)
  98           PCAP_INC_DIR=$ac_cv_pcap_where_inc
  99           PCAP_LIB_DIR=$ac_cv_pcap_where_lib
 100           PCAP_INC_FLAGS="-I${PCAP_INC_DIR}"
 101           PCAP_LIB_FLAGS="-L${PCAP_LIB_DIR} -lpcap"
 102           if test "X$RPATH" = "X"; then
 103                 RPATH=""
 104           fi
 105           case "${host}" in
 106             *-*-linux*)
 107               if test "X$RPATH" = "X"; then
 108                 RPATH="-Wl,-rpath,${PCAP_LIB_DIR}"
 109               else
 110                 RPATH="${RPATH}:${PCAP_LIB_DIR}"
 111               fi
 112               ;;
 113             *-*-hpux*)
 114               if test "X$RPATH" = "X"; then
 115                 RPATH="-Wl,+b${PCAP_LIB_DIR}"
 116               else
 117                 RPATH="${RPATH}:${PCAP_LIB_DIR}"
 118               fi
 119               ;;
 120             *-*-irix*)
 121               if test "X$RPATH" = "X"; then
 122                 RPATH="-Wl,-rpath,${PCAP_LIB_DIR}"
 123               else
 124                 RPATH="${RPATH}:${PCAP_LIB_DIR}"
 125               fi
 126               ;;
 127             *-*-solaris2*)
 128               if test "$ac_cv_prog_gcc" = yes; then
 129                 if test "X$RPATH" = "X"; then
 130                   RPATH="-Wl,-R${PCAP_LIB_DIR}"
 131                 else
 132                   RPATH="${RPATH}:${PCAP_LIB_DIR}"
 133                 fi
 134               else
 135                 RPATH="${RPATH} -R${PCAP_LIB_DIR}"
 136               fi
 137               ;;
 138           esac
 139           AC_SUBST(RPATH)
 140         fi
 141         ])
 142