aclocal-fallback/libsmi.m4

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