flimflam: Add L2TP/IPsec VPN plugin

configure.ac

 AC_PREREQ(2.60)
 AC_INIT(connman, 0.42)
 
 AM_INIT_AUTOMAKE([foreign subdir-objects])
 AM_CONFIG_HEADER(config.h)
 
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
 AM_MAINTAINER_MODE
 
@@ skipping 138 matching lines @@
         if (test -z "${path_openvpn}"); then
                 AC_PATH_PROG(OPENVPN, [openvpn], [], $PATH:/sbin:/usr/sbin)
         else
                 OPENVPN="${path_openvpn}"
                 AC_SUBST(OPENVPN)
         fi
 fi
 AM_CONDITIONAL(OPENVPN, test "${enable_openvpn}" != "no")
 AM_CONDITIONAL(OPENVPN_BUILTIN, test "${enable_openvpn}" = "builtin")
 
+AC_ARG_WITH(l2tpipsec, AC_HELP_STRING([--with-l2tpipsec=PROGRAM],
+        [specify location of L2TP/IPsec VPN binary]),
+        [path_l2tpipsec=${withval}])
+
+AC_ARG_ENABLE(l2tpipsec,
+        AC_HELP_STRING([--enable-l2tpipsec], [enable L2TP/IPsec support]),
+                        [enable_l2tpipsec=${enableval}],
+                        [enable_l2tpipsec="no"])
+if (test "${enable_l2tpipsec}" != "no"); then
+        if (test -z "${path_l2tpipsec}"); then
+                AC_PATH_PROG(L2TPIPSEC, [l2tpipsec_vpn], [],
+                        $PATH:/sbin:/usr/sbin)
+        else
+                L2TPIPSEC="${path_l2tpipsec}"
+                AC_SUBST(L2TPIPSEC)
+        fi
+fi
+AM_CONDITIONAL(L2TPIPSEC, test "${enable_l2tpipsec}" != "no")
+AM_CONDITIONAL(L2TPIPSEC_BUILTIN, test "${enable_l2tpipsec}" = "builtin")
+
 AC_ARG_ENABLE(loopback,
         AC_HELP_STRING([--enable-loopback], [enable loopback support]),
                         [enable_loopback=${enableval}], [enable_loopback="no"])
 if (test "${enable_loopback}" != "no"); then
         AC_CHECK_HEADERS(sys/inotify.h, dummy=yes,
                         AC_MSG_ERROR(inotify header files are required))
 
         AC_CHECK_LIB(c, inotify_init, dummy=yes,
                         AC_MSG_ERROR(inotify library support is required))
 fi
@@ skipping 181 matching lines @@
 AC_SUBST(UDEV_LIBS)
 AM_CONDITIONAL(UDEV, test "${enable_udev}" = "yes")
 
 AC_ARG_ENABLE(datafiles, AC_HELP_STRING([--disable-datafiles],
                         [don't install configuration and data files]),
                                         [enable_datafiles=${enableval}])
 AM_CONDITIONAL(DATAFILES, test "${enable_datafiles}" != "no")
 
 AC_OUTPUT(Makefile include/version.h src/flimflam.service
                                 scripts/flimflam doc/version.xml flimflam.pc)