build: Check for libnl-1 if libnl-2.0 is not present

diff --git a/configure.ac b/configure.ac
index ea97bf8..d0b73c3 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -73,8 +73,17 @@ AC_CHECK_LIB(dbus-1, dbus_watch_get_unix_fd, dummy=yes,
 AC_SUBST(DBUS_CFLAGS)
 AC_SUBST(DBUS_LIBS)
 
-PKG_CHECK_MODULES(NETLINK, libnl-2.0, dummy=yes,
+PKG_CHECK_MODULES(LIBNL2, libnl-2.0, [
+       NETLINK_CFLAGS=${IBNL2_CFLAGS}
+       NETLINK_LIBS=${LIBNL2_LIBS}
+], [
+       PKG_CHECK_MODULES(LIBNL1, libnl-1, dummy=yes,
                                AC_MSG_ERROR(Netlink library is required))
+       AC_DEFINE(NEED_LIBNL_COMPAT, 1,
+                       [Define to 1 if you need libnl-1 compat functions.])
+       NETLINK_CFLAGS=${LIBNL1_CFLAGS}
+       NETLINK_LIBS=${LIBNL1_LIBS}
+])
 AC_SUBST(NETLINK_CFLAGS)
 AC_SUBST(NETLINK_LIBS)