+ SAVE_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $with_libnetlink_cflags"
+
+ AC_CACHE_CHECK(
+ [if function 'rtnl_dump_filter' expects five arguments],
+ [c_cv_rtnl_dump_filter_five_args],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[
+#include <stdio.h>
+#include <sys/types.h>
+#include <asm/types.h>
+#include <sys/socket.h>
+#if HAVE_LIBNETLINK_H
+# include <libnetlink.h>
+#elif HAVE_IPROUTE_LIBNETLINK_H
+# include <iproute/libnetlink.h>
+#elif HAVE_LINUX_LIBNETLINK_H
+# include <linux/libnetlink.h>
+#endif
+]],
+[[
+if (rtnl_dump_filter(NULL, NULL, NULL, NULL, NULL))
+ return 1;
+return 0;
+]]
+ )],
+ [c_cv_rtnl_dump_filter_five_args="yes"],
+ [c_cv_rtnl_dump_filter_five_args="no"]
+ )
+)
+
+ AC_CACHE_CHECK(
+ [if function 'rtnl_dump_filter' expects three arguments],
+ [c_cv_rtnl_dump_filter_three_args],
+ AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
+[[
+#include <stdio.h>
+#include <sys/types.h>
+#include <asm/types.h>
+#include <sys/socket.h>
+#if HAVE_LIBNETLINK_H
+# include <libnetlink.h>
+#elif HAVE_IPROUTE_LIBNETLINK_H
+# include <iproute/libnetlink.h>
+#elif HAVE_LINUX_LIBNETLINK_H
+# include <linux/libnetlink.h>
+#endif
+]],
+[[
+if (rtnl_dump_filter(NULL, NULL, NULL))
+ return 1;
+return 0;
+]]
+ )],
+ [c_cv_rtnl_dump_filter_three_args="yes"],
+ [c_cv_rtnl_dump_filter_three_args="no"]
+ )
+)
+
+ CFLAGS="$SAVE_CFLAGS"
+
+ if test "x$c_cv_rtnl_dump_filter_five_args" = "xyes"
+ then
+ AC_DEFINE(RTNL_DUMP_FILTER_FIVE_ARGS, 1,
+ [Define to 1 if function 'rtnl_dump_filter' expects five arguments.])
+ fi
+ if test "x$c_cv_rtnl_dump_filter_three_args" = "xyes"
+ then
+ AC_DEFINE(RTNL_DUMP_FILTER_THREE_ARGS, 1,
+ [Define to 1 if function 'rtnl_dump_filter' expects three arguments.])
+ fi
+