Fix linker issue of dublicate definitions

include/globals.h

@@ -47,19 +47,20 @@ struct s_initpeers {
         struct s_io_addr * addresses;
         int count;
 };
+
 // global variables
-struct s_io_state iostate;
-struct s_p2psec * g_p2psec;
-int g_mainloop;
+extern struct s_io_state iostate;
+extern struct s_p2psec * g_p2psec;
+extern int g_mainloop;
 
-struct s_switch_state g_switchstate;
-struct s_ndp6_state g_ndpstate;
-struct s_virtserv_state g_virtserv;
+extern struct s_switch_state g_switchstate;
+extern struct s_ndp6_state g_ndpstate;
+extern struct s_virtserv_state g_virtserv;
 
-int g_enableconsole;
-int g_enableeth;
-int g_enablendpcache;
-int g_enablevirtserv;
-int g_enableengines;
+extern int g_enableconsole;
+extern int g_enableeth;
+extern int g_enablendpcache;
+extern int g_enablevirtserv;
+extern int g_enableengines;
 
 #endif

src/Makefile.am

@@ -41,6 +41,7 @@ meshvpn_SOURCES = \
 	platform/seccomp.c \
 	platform/perms.c \
 	platform/ifconfig.c \
+	app/globals.c \
 	app/init.c \
 	app/loop.c \
 	app/config.c \

src/app/globals.c

@@ -0,0 +1,34 @@
+/*
+ * MeshVPN - A open source peer-to-peer VPN (forked from PeerVPN)
+ *
+ * Copyright (C) 2012-2016  Tobias Volk <[email protected]>
+ * Copyright (C) 2016       Hideman Developer <[email protected]>
+ * Copyright (C) 2017       Benjamin Kübler <[email protected]>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+struct s_io_state iostate;
+struct s_p2psec * g_p2psec;
+int g_mainloop;
+
+struct s_switch_state g_switchstate;
+struct s_ndp6_state g_ndpstate;
+struct s_virtserv_state g_virtserv;
+
+int g_enableconsole;
+int g_enableeth;
+int g_enablendpcache;
+int g_enablevirtserv;
+int g_enableengines;