diff -Naur a/lib_ccx/ccx_decoders_708.h b/lib_ccx/ccx_decoders_708.h
--- a/lib_ccx/ccx_decoders_708.h	2017-01-24 00:56:17.000000000 +0000
+++ b/lib_ccx/ccx_decoders_708.h	2020-05-17 00:59:25.596207779 +0000
@@ -368,7 +368,7 @@
 									 unsigned char *data,
 									 int data_length);
 
-ccx_dtvcc_pen_color ccx_dtvcc_default_pen_color;
-ccx_dtvcc_pen_attribs ccx_dtvcc_default_pen_attribs;
+extern ccx_dtvcc_pen_color ccx_dtvcc_default_pen_color;
+extern ccx_dtvcc_pen_attribs ccx_dtvcc_default_pen_attribs;
 
 #endif