musl/openvpn: add workaround avoiding redefinition of struct ethhdr

base/musl/pkg/openvpn/openvpn-no-struct_ethhdr-redefinition.patch

@@ -0,0 +1,40 @@
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+#
+# Filename: package/.../musl/pkg/openvpn/openvpn-no-struct_ethhdr-redefinition.patch
+# Copyright (C) 2014 The OpenSDE Project
+#
+# More information can be found in the files COPYING and README.
+#
+# This patch file is dual-licensed. It is available under the license the
+# patched project is licensed under, as long as it is an OpenSource license
+# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
+# of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+On musl libc based systems 'struct ethhdr' is defined in <netinet/if_ether.h>
+but when including <linux/if_tun.h> it pulls in <linux/if_ether.h> which is
+also defining 'struct ethhdr'.
+
+-----------------------------------------------------------------------------
+/usr/include/netinet/if_ether.h:94:8: note: originally defined here
+In file included from /usr/include/linux/if_tun.h:20:0
+/usr/include/linux/if_ether.h:133:8: error: redefinition of 'struct ethhdr'
+In file included from syshead.h:218:0
+-----------------------------------------------------------------------------
+
+--- a/src/openvpn/syshead.h	2014-04-26 02:11:53.110728493 +0200
++++ b/src/openvpn/syshead.h	2014-04-26 02:16:59.229770416 +0200
+@@ -214,10 +214,6 @@
+ 
+ #ifdef TARGET_LINUX
+ 
+-#if defined(HAVE_NETINET_IF_ETHER_H)
+-#include <netinet/if_ether.h>
+-#endif
+-
+ #ifdef HAVE_LINUX_IF_TUN_H
+ #include <linux/if_tun.h>
+ #endif