build: relax libmnl checks and document ipset requirements

diff --git a/INSTALL b/INSTALL
index a52c4c59f1d06eb37ef4a4ca82e14a53339da364..e6db4b77567cb3c31baa8d8a29ff9eccfcd526f3 100644 (file)
--- a/INSTALL
+++ b/INSTALL
@@ -28,6 +28,12 @@ Extra notes:
 
        * requires that no vendor backports interfere
 
+For ipset-5 you need:
+
+       * libmnl
+
+       * Linux kernel >= 2.6.35
+
 
 Selecting extensions
 ====================

diff --git a/configure.ac b/configure.ac
index 86eeaf17558d0875b4a3c125794f5bf74016972b..e181930c5bc9c67030fc32f882de069dcf05e45b 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -25,7 +25,7 @@ AC_CHECK_HEADERS([linux/netfilter/x_tables.h], [],
        [AC_MSG_ERROR([You need to have linux/netfilter/x_tables.h, see INSTALL file for details])])
 PKG_CHECK_MODULES([libxtables], [xtables >= 1.4.3])
 xtlibdir="$(pkg-config --variable=xtlibdir xtables)"
-PKG_CHECK_MODULES([libmnl], [libmnl >= 1])
+PKG_CHECK_MODULES([libmnl], [libmnl >= 1], [:], [:])
 
 AC_ARG_WITH([xtlibdir],
        AS_HELP_STRING([--with-xtlibdir=PATH],