diff -Nru t4kcommon-0.1.1/debian/changelog t4kcommon-0.1.1/debian/changelog
--- t4kcommon-0.1.1/debian/changelog	2020-05-20 08:30:44.000000000 +0000
+++ t4kcommon-0.1.1/debian/changelog	2020-11-21 17:08:36.000000000 +0000
@@ -1,3 +1,11 @@
+t4kcommon (0.1.1-10) unstable; urgency=medium
+
+  * Add 0001-Fix-wrapped_lines-variable-declaration-extern.patch to fix build
+    with GCC 10.Closes: #957859. Thanks to Antoni Villalonga for the patch.
+  * Update standards version to 4.5.1.
+
+ -- Holger Levsen <holger@debian.org>  Sat, 21 Nov 2020 18:08:36 +0100
+
 t4kcommon (0.1.1-9) unstable; urgency=medium
 
   * d/not-installed: use wildcards to ignore usr/lib/*/libt4k_common.(a|la)
diff -Nru t4kcommon-0.1.1/debian/control t4kcommon-0.1.1/debian/control
--- t4kcommon-0.1.1/debian/control	2020-05-20 08:09:35.000000000 +0000
+++ t4kcommon-0.1.1/debian/control	2020-11-21 12:39:42.000000000 +0000
@@ -15,7 +15,7 @@
               ,libxml2-dev
 # needed for de-duplication:
               ,rdfind ,symlinks
-Standards-Version: 4.5.0
+Standards-Version: 4.5.1
 Rules-Requires-Root: no
 Homepage: https://github.com/tux4kids/
 Vcs-Git: https://salsa.debian.org/tux4kids-pkg-team/t4kcommon.git
diff -Nru t4kcommon-0.1.1/debian/patches/0001-Fix-wrapped_lines-variable-declaration-extern.patch t4kcommon-0.1.1/debian/patches/0001-Fix-wrapped_lines-variable-declaration-extern.patch
--- t4kcommon-0.1.1/debian/patches/0001-Fix-wrapped_lines-variable-declaration-extern.patch	1970-01-01 00:00:00.000000000 +0000
+++ t4kcommon-0.1.1/debian/patches/0001-Fix-wrapped_lines-variable-declaration-extern.patch	2020-11-21 13:10:41.000000000 +0000
@@ -0,0 +1,26 @@
+From f36ec174f4d8130749f11aeb1d77a81da4be89aa Mon Sep 17 00:00:00 2001
+From: Antoni Villalonga <antoni@friki.cat>
+Date: Mon, 31 Aug 2020 09:05:16 +0200
+Subject: [PATCH] Fix wrapped_lines variable declaration (extern)
+
+Signed-off-by: Holger Levsen <holger@layer-acht.org>
+---
+ src/t4k_common.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/t4k_common.h b/src/t4k_common.h
+index 36d937b..68f6005 100644
+--- a/src/t4k_common.h
++++ b/src/t4k_common.h
+@@ -245,7 +245,7 @@ MFStrategy;
+ #define MAX_LINES 128     //!< Maximum lines to wrap.
+ #define MAX_LINEWIDTH 256 //!< Maximum characters of each line.
+ 
+-char wrapped_lines[MAX_LINES][MAX_LINEWIDTH]; //!< Global buffer for wrapped lines.
++extern char wrapped_lines[MAX_LINES][MAX_LINEWIDTH]; //!< Global buffer for wrapped lines.
+ 
+ //TODO separate headers for different areas a la SDL?
+ 
+-- 
+2.20.1
+
diff -Nru t4kcommon-0.1.1/debian/patches/series t4kcommon-0.1.1/debian/patches/series
--- t4kcommon-0.1.1/debian/patches/series	2020-05-20 08:09:35.000000000 +0000
+++ t4kcommon-0.1.1/debian/patches/series	2020-11-21 12:43:53.000000000 +0000
@@ -1,2 +1,3 @@
 libpng16.patch
 916060_bugfix.patch
+0001-Fix-wrapped_lines-variable-declaration-extern.patch