diff --git a/dns/dns2tcp/files/patch-client_main.c b/dns/dns2tcp/files/patch-client_main.c
new file mode 100644
index 000000000000..4c23db06f25b
--- /dev/null
+++ b/dns/dns2tcp/files/patch-client_main.c
@@ -0,0 +1,11 @@
+--- client/main.c.orig	2020-08-28 19:28:55 UTC
++++ client/main.c
+@@ -36,6 +36,8 @@
+ #include "myerror.h"
+ #include "dns.h"
+ 
++int debug;
++
+ /**
+  * @brief main part
+  * @retval 0 on success
diff --git a/dns/dns2tcp/files/patch-common_includes_debug.h b/dns/dns2tcp/files/patch-common_includes_debug.h
new file mode 100644
index 000000000000..d8fe8062d212
--- /dev/null
+++ b/dns/dns2tcp/files/patch-common_includes_debug.h
@@ -0,0 +1,11 @@
+--- common/includes/debug.h.orig	2020-08-28 19:24:48 UTC
++++ common/includes/debug.h
+@@ -24,7 +24,7 @@
+ #include <stdio.h>
+ #include <time.h>
+ 
+-int debug;
++extern int debug;
+ 
+ #ifndef _WIN32
+ #define DPRINTF(level, fmt, args...)  \
diff --git a/dns/dns2tcp/files/patch-server_main.c b/dns/dns2tcp/files/patch-server_main.c
new file mode 100644
index 000000000000..cbcaf7f39f29
--- /dev/null
+++ b/dns/dns2tcp/files/patch-server_main.c
@@ -0,0 +1,11 @@
+--- server/main.c.orig	2020-08-28 19:28:55 UTC
++++ server/main.c
+@@ -42,6 +42,8 @@
+ #include "myerror.h"
+ #include "log.h"
+ 
++int debug;
++
+ int			detach_process(t_conf *conf)
+ {
+   int			fd;