aclocal-fallback/libsmi.m4

   1 # Configure paths for libsmi
   2 # Shamelessly stolen from http://autoconf-archive.cryp.to/ax_lib_sqlite3.html
   3 # $Id$
   4
   5 # Synopsis: AX_LIBSMI([minimum library version])
   6 # The default minimum library version is 2
   7
   8 # This macro sets/substitutes the following:
   9 # AC_DEFINE(HAVE_LIBSMI)
  10 # AC_SUBST(LIBSMI_CFLAGS)
  11 # AC_SUBST(LIBSMI_LDFLAGS)
  12 # AC_SUBST(LIBSMI_VERSION)
  13 # $libsmi_message is set to "yes" or "no"
  14
  15 AC_DEFUN([AX_LIBSMI],
  16 [
  17     AC_ARG_WITH([libsmi],
  18         AC_HELP_STRING(
  19             [--with-libsmi=@<:@DIR@:>@],
  20             [use libsmi MIB/PIB library @<:@default=yes@:>@, optionally specify the prefix for libsmi]
  21         ),
  22         [
  23         if test "$withval" = "no"; then
  24             WANT_LIBSMI="no"
  25         elif test "$withval" = "yes"; then
  26             WANT_LIBSMI="yes"
  27             ac_libsmi_path=""
  28         else
  29             WANT_LIBSMI="yes"
  30             ac_libsmi_path="$withval"
  31         fi
  32         ],
  33         [WANT_LIBSMI="yes"]
  34     )
  35
  36     libsmi_message="no"
  37     LIBSMI_CFLAGS=""
  38     LIBSMI_LDFLAGS=""
  39     LIBSMI_VERSION=""
  40
  41     if test "x$WANT_LIBSMI" = "xyes"; then
  42
  43         ac_libsmi_header="smi.h"
  44
  45         libsmi_version_req=ifelse([$1], [], [2], [$1])
  46
  47         AC_MSG_CHECKING([for libsmi >= $libsmi_version_req])
  48
  49         if test "$ac_libsmi_path" != ""; then
  50             ac_libsmi_ldflags="-L$ac_libsmi_path/lib"
  51             ac_libsmi_cflags="-I$ac_libsmi_path/include"
  52         else
  53             for ac_libsmi_path_tmp in /usr /usr/local /opt $prefix; do
  54                 if test -f "$ac_libsmi_path_tmp/include/$ac_libsmi_header" \
  55                     && test -r "$ac_libsmi_path_tmp/include/$ac_libsmi_header"; then
  56                     ac_libsmi_path=$ac_libsmi_path_tmp
  57                     ac_libsmi_ldflags="-L$ac_libsmi_path_tmp/lib"
  58                     ac_libsmi_cflags="-I$ac_libsmi_path_tmp/include"
  59                     break;
  60                 fi
  61             done
  62         fi
  63
  64         ac_libsmi_ldflags="$ac_libsmi_ldflags -lsmi"
  65
  66         saved_CFLAGS="$CFLAGS"
  67         CFLAGS="$CFLAGS $ac_libsmi_cflags"
  68
  69         AC_LANG_PUSH(C)
  70         AC_COMPILE_IFELSE(
  71             [
  72             AC_LANG_PROGRAM([[@%:@include <smi.h>]],
  73                 [[
  74   int current, revision, age, n;
  75   const int required = $libsmi_version_req;
  76   if (smiInit(""))
  77     exit(1);
  78   if (strcmp(SMI_LIBRARY_VERSION, smi_library_version))
  79     exit(2);
  80   n = sscanf(smi_library_version, "%d:%d:%d", &current, &revision, &age);
  81   if (n != 3)
  82     exit(3);
  83   if (required < current - age || required > current)
  84     exit(4);
  85                 ]]
  86             )
  87             ],
  88             [
  89             AC_MSG_RESULT([yes])
  90             libsmi_message="yes"
  91             ],
  92             [
  93             AC_MSG_RESULT([not found])
  94             libsmi_message="no"
  95             ]
  96         )
  97         AC_LANG_POP([C])
  98
  99         CFLAGS="$saved_CFLAGS"
 100
 101         if test "$libsmi_message" = "yes"; then
 102
 103             LIBSMI_CFLAGS="$ac_libsmi_cflags"
 104             LIBSMI_LDFLAGS="$ac_libsmi_ldflags"
 105
 106             ac_libsmi_header_path="$ac_libsmi_path/include/$ac_libsmi_header"
 107
 108             dnl Retrieve libsmi release version
 109             if test "x$ac_libsmi_header_path" != "x"; then
 110                 ac_libsmi_version=`cat $ac_libsmi_header_path \
 111                     | grep '#define.*SMI_LIBRARY_VERSION.*\"' | sed -e 's/.* "//' \
 112                         | sed -e 's/"//'`
 113                 if test $ac_libsmi_version != ""; then
 114                     LIBSMI_VERSION=$ac_libsmi_version
 115                 else
 116                     AC_MSG_WARN([Can not find SMI_LIBRARY_VERSION macro in smi.h header to retrieve libsmi version!])
 117                 fi
 118             fi
 119
 120             AC_SUBST(LIBSMI_CFLAGS)
 121             AC_SUBST(LIBSMI_LDFLAGS)
 122             AC_SUBST(LIBSMI_VERSION)
 123             AC_DEFINE(HAVE_LIBSMI, 1, [Define to 1 if you have the `smi' library (-lsmi).])
 124         fi
 125     fi
 126 ])
 127
 128