diff -up ags-v.3.5.0.25/Common/font/fonts.cpp.gcc10 ags-v.3.5.0.25/Common/font/fonts.cpp
--- ags-v.3.5.0.25/Common/font/fonts.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Common/font/fonts.cpp	2020-08-04 14:45:38.562128618 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include <vector>
 #include <alfont.h>
 #include "ac/common.h" // set_our_eip
diff -up ags-v.3.5.0.25/Common/game/main_game_file.cpp.gcc10 ags-v.3.5.0.25/Common/game/main_game_file.cpp
--- ags-v.3.5.0.25/Common/game/main_game_file.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Common/game/main_game_file.cpp	2020-08-04 14:46:04.688326178 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include "ac/audiocliptype.h"
 #include "ac/dialogtopic.h"
 #include "ac/gamesetupstruct.h"
diff -up ags-v.3.5.0.25/Engine/ac/global_debug.cpp.gcc10 ags-v.3.5.0.25/Engine/ac/global_debug.cpp
--- ags-v.3.5.0.25/Engine/ac/global_debug.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Engine/ac/global_debug.cpp	2020-08-04 12:56:31.962203312 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include "ac/global_debug.h"
 #include "ac/common.h"
 #include "ac/characterinfo.h"
diff -up ags-v.3.5.0.25/Engine/ac/global_display.cpp.gcc10 ags-v.3.5.0.25/Engine/ac/global_display.cpp
--- ags-v.3.5.0.25/Engine/ac/global_display.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Engine/ac/global_display.cpp	2020-08-04 12:56:31.962203312 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include <stdarg.h>
 #include "ac/common.h"
 #include "ac/character.h"
diff -up ags-v.3.5.0.25/Engine/ac/gui.cpp.gcc10 ags-v.3.5.0.25/Engine/ac/gui.cpp
--- ags-v.3.5.0.25/Engine/ac/gui.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Engine/ac/gui.cpp	2020-08-04 12:56:31.962203312 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include "ac/gui.h"
 #include "ac/common.h"
 #include "ac/draw.h"
diff -up ags-v.3.5.0.25/Engine/ac/parser.cpp.gcc10 ags-v.3.5.0.25/Engine/ac/parser.cpp
--- ags-v.3.5.0.25/Engine/ac/parser.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Engine/ac/parser.cpp	2020-08-04 12:56:31.962203312 +0200
@@ -13,6 +13,7 @@
 //=============================================================================
 
 #include <cctype> //isalnum()
+#include <cstdio>
 #include "ac/common.h"
 #include "ac/gamesetupstruct.h"
 #include "ac/gamestate.h"
diff -up ags-v.3.5.0.25/Engine/ac/string.cpp.gcc10 ags-v.3.5.0.25/Engine/ac/string.cpp
--- ags-v.3.5.0.25/Engine/ac/string.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Engine/ac/string.cpp	2020-08-04 12:56:31.962203312 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include "ac/string.h"
 #include "ac/common.h"
 #include "ac/display.h"
diff -up ags-v.3.5.0.25/Engine/ac/translation.cpp.gcc10 ags-v.3.5.0.25/Engine/ac/translation.cpp
--- ags-v.3.5.0.25/Engine/ac/translation.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Engine/ac/translation.cpp	2020-08-04 12:56:31.962203312 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include "ac/asset_helper.h"
 #include "ac/common.h"
 #include "ac/gamesetup.h"
diff -up ags-v.3.5.0.25/Engine/debug/filebasedagsdebugger.cpp.gcc10 ags-v.3.5.0.25/Engine/debug/filebasedagsdebugger.cpp
--- ags-v.3.5.0.25/Engine/debug/filebasedagsdebugger.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Engine/debug/filebasedagsdebugger.cpp	2020-08-04 14:42:43.988808731 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include "debug/filebasedagsdebugger.h"
 #include "ac/file.h"                    // filelength()
 #include "util/stream.h"
diff -up ags-v.3.5.0.25/Engine/gui/guidialog.cpp.gcc10 ags-v.3.5.0.25/Engine/gui/guidialog.cpp
--- ags-v.3.5.0.25/Engine/gui/guidialog.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Engine/gui/guidialog.cpp	2020-08-04 14:44:16.379507272 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include "gui/guidialog.h"
 
 #include "ac/common.h"
diff -up ags-v.3.5.0.25/Engine/script/cc_instance.cpp.gcc10 ags-v.3.5.0.25/Engine/script/cc_instance.cpp
--- ags-v.3.5.0.25/Engine/script/cc_instance.cpp.gcc10	2020-07-12 02:18:03.000000000 +0200
+++ ags-v.3.5.0.25/Engine/script/cc_instance.cpp	2020-08-04 14:45:00.790843049 +0200
@@ -12,6 +12,7 @@
 //
 //=============================================================================
 
+#include <cstdio>
 #include <string.h>
 #include "ac/common.h"
 #include "ac/dynobj/cc_dynamicarray.h"