--- /dev/null
+diff -ruN a/common/unicode/platform.h b/common/unicode/platform.h
+--- a/common/unicode/platform.h 2020-10-28 23:21:12.000000000 +0200
++++ b/common/unicode/platform.h 2020-11-28 20:48:53.223629867 +0200
+@@ -649,7 +649,7 @@
+ /* Use the predefined value. */
+ #elif U_PLATFORM_IS_LINUX_BASED || U_PLATFORM_IS_DARWIN_BASED || \
+ U_PLATFORM == U_PF_EMSCRIPTEN
+-# define U_CHARSET_IS_UTF8 1
++# define U_CHARSET_IS_UTF8 0
+ #else
+ # define U_CHARSET_IS_UTF8 0
+ #endif