diff --git a/gnupg-2.2.19-build.patch b/gnupg-2.2.19-build.patch
index 82dabed..948fc1b 100644
--- a/gnupg-2.2.19-build.patch
+++ b/gnupg-2.2.19-build.patch
@@ -1,18 +1,32 @@
+diff -up gnupg-2.2.19/common/iobuf.c.build gnupg-2.2.19/common/iobuf.c
+--- gnupg-2.2.19/common/iobuf.c.build	2019-07-09 11:08:45.000000000 +0200
++++ gnupg-2.2.19/common/iobuf.c	2020-01-29 19:10:03.488980061 +0100
+@@ -118,6 +118,7 @@ struct close_cache_s
+ typedef struct close_cache_s *close_cache_t;
+ static close_cache_t close_cache;
+ 
++int iobuf_debug_mode;
+ 
+ 
+ #ifdef HAVE_W32_SYSTEM
 diff -up gnupg-2.2.19/common/iobuf.h.build gnupg-2.2.19/common/iobuf.h
 --- gnupg-2.2.19/common/iobuf.h.build	2017-02-24 13:46:24.000000000 +0100
-+++ gnupg-2.2.19/common/iobuf.h	2020-01-29 18:53:45.466585922 +0100
-@@ -250,7 +250,7 @@ struct iobuf_struct
++++ gnupg-2.2.19/common/iobuf.h	2020-01-29 19:08:47.961340383 +0100
+@@ -250,11 +250,7 @@ struct iobuf_struct
  };
  
  #ifndef EXTERN_UNLESS_MAIN_MODULE
 -#if defined (__riscos__) && !defined (INCLUDED_BY_MAIN_MODULE)
-+#if !defined (INCLUDED_BY_MAIN_MODULE)
  #define EXTERN_UNLESS_MAIN_MODULE extern
- #else
- #define EXTERN_UNLESS_MAIN_MODULE
+-#else
+-#define EXTERN_UNLESS_MAIN_MODULE
+-#endif
+ #endif
+ EXTERN_UNLESS_MAIN_MODULE int iobuf_debug_mode;
+ 
 diff -up gnupg-2.2.19/g10/options.h.build gnupg-2.2.19/g10/options.h
 --- gnupg-2.2.19/g10/options.h.build	2020-01-29 12:54:10.308621663 +0100
-+++ gnupg-2.2.19/g10/options.h	2020-01-29 18:53:23.817975442 +0100
++++ gnupg-2.2.19/g10/options.h	2020-01-29 19:10:44.659238547 +0100
 @@ -32,7 +32,7 @@
  
  #ifndef EXTERN_UNLESS_MAIN_MODULE