--- ./gb.pdf/src/CPdfDocument.cpp.orig	2018-12-12 11:02:03.438335279 +0000
+++ ./gb.pdf/src/CPdfDocument.cpp	2018-12-12 11:04:01.579336620 +0000
@@ -47,6 +47,11 @@
 #include <GlobalParams.h>
 #include <UnicodeMap.h>
 
+#if !defined gFalse
+#define gFalse (0)
+#define gTrue (1)
+#endif
+
 
 /***************************************************************************/