1 files changed, 125 insertions, 0 deletions
diff --git a/m4/libsmi.m4 b/m4/libsmi.m4
new file mode 100644
index 0000000000..d719438edc
--- /dev/null
+++ b/m4/libsmi.m4
@@ -0,0 +1,125 @@
+# Configure paths for libsmi
+# Shamelessly stolen from http://autoconf-archive.cryp.to/ax_lib_sqlite3.html
+
+# Synopsis: AX_LIBSMI([minimum library version])
+# The default minimum library version is 2
+
+# This macro sets/substitutes the following:
+# AC_DEFINE(HAVE_LIBSMI)
+# AC_SUBST(LIBSMI_CFLAGS)
+# AC_SUBST(LIBSMI_LDFLAGS)
+# AC_SUBST(LIBSMI_VERSION)
+# $libsmi_message is set to "yes" or "no"
+
+AC_DEFUN([AX_LIBSMI],
+[
+    AC_ARG_WITH([libsmi],
+        AC_HELP_STRING(
+            [--with-libsmi=@<:@DIR@:>@],
+            [use libsmi MIB/PIB library @<:@default=yes@:>@, optionally specify the prefix for libsmi]
+        ),
+        [
+        if test "$withval" = "no"; then
+            WANT_LIBSMI="no"
+        elif test "$withval" = "yes"; then
+            WANT_LIBSMI="yes"
+            ac_libsmi_path=""
+        else
+            WANT_LIBSMI="yes"
+            ac_libsmi_path="$withval"
+        fi
+        ],
+        [WANT_LIBSMI="yes"]
+    )
+
+    libsmi_message="no"
+    LIBSMI_CFLAGS=""
+    LIBSMI_LDFLAGS=""
+    LIBSMI_VERSION=""
+
+    if test "x$WANT_LIBSMI" = "xyes"; then
+
+        ac_libsmi_header="smi.h"
+
+        libsmi_version_req=ifelse([$1], [], [2], [$1])
+
+        AC_MSG_CHECKING([for libsmi >= $libsmi_version_req])
+
+        if test "$ac_libsmi_path" != ""; then
+            ac_libsmi_ldflags="-L$ac_libsmi_path/lib"
+            ac_libsmi_cflags="-I$ac_libsmi_path/include"
+        else
+            for ac_libsmi_path_tmp in /usr /usr/local /opt $prefix; do
+                if test -f "$ac_libsmi_path_tmp/include/$ac_libsmi_header" \
+                    && test -r "$ac_libsmi_path_tmp/include/$ac_libsmi_header"; then
+                    ac_libsmi_path=$ac_libsmi_path_tmp
+                    ac_libsmi_ldflags="-L$ac_libsmi_path_tmp/lib"
+                    ac_libsmi_cflags="-I$ac_libsmi_path_tmp/include"
+                    break;
+                fi
+            done
+        fi
+
+        ac_libsmi_ldflags="$ac_libsmi_ldflags -lsmi"
+
+        saved_CFLAGS="$CFLAGS"
+        CFLAGS="$CFLAGS $ac_libsmi_cflags"
+
+        AC_LANG_PUSH(C)
+        AC_COMPILE_IFELSE(
+            [
+            AC_LANG_PROGRAM([[@%:@include <smi.h>]],
+                [[
+  int current, revision, age, n;
+  const int required = $libsmi_version_req;
+  if (smiInit(""))
+    exit(1);
+  if (strcmp(SMI_LIBRARY_VERSION, smi_library_version))
+    exit(2);
+  n = sscanf(smi_library_version, "%d:%d:%d", &current, &revision, &age);
+  if (n != 3)
+    exit(3);
+  if (required < current - age || required > current)
+    exit(4);
+                ]]
+            )
+            ],
+            [
+            AC_MSG_RESULT([yes])
+            libsmi_message="yes"
+            ],
+            [
+            AC_MSG_RESULT([not found])
+            libsmi_message="no"
+            ]
+        )
+        AC_LANG_POP([C])
+
+        CFLAGS="$saved_CFLAGS"
+
+        if test "$libsmi_message" = "yes"; then
+
+            LIBSMI_CFLAGS="$ac_libsmi_cflags"
+            LIBSMI_LDFLAGS="$ac_libsmi_ldflags"
+
+            ac_libsmi_header_path="$ac_libsmi_path/include/$ac_libsmi_header"
+
+            dnl Retrieve libsmi release version
+            if test "x$ac_libsmi_header_path" != "x"; then
+                ac_libsmi_version=`cat $ac_libsmi_header_path \
+                    | grep '#define.*SMI_LIBRARY_VERSION.*\"' | sed -e 's/.* "//' \
+                        | sed -e 's/"//'`
+                if test $ac_libsmi_version != ""; then
+                    LIBSMI_VERSION=$ac_libsmi_version
+                else
+                    AC_MSG_WARN([Can not find SMI_LIBRARY_VERSION macro in smi.h header to retrieve libsmi version!])
+                fi
+            fi
+
+            AC_SUBST(LIBSMI_CFLAGS)
+            AC_SUBST(LIBSMI_LDFLAGS)
+            AC_SUBST(LIBSMI_VERSION)
+            AC_DEFINE(HAVE_LIBSMI, 1, [Define to 1 if you have the `smi' library (-lsmi).])
+        fi
+    fi
+])