diff --git a/compiler/src/globals.h b/compiler/src/globals.h
new file mode 100644
index 0000000..db7e392
--- /dev/null
+++ b/compiler/src/globals.h
@@ -0,0 +1,15 @@
+#ifndef T_GLOBALS_H
+#define T_GLOBALS_H
+
+class t_program;
+
+/** Global variable: the master program parse tree */
+extern t_program* g_program;
+
+/** Global debug state */
+extern int g_debug;
+
+/** Global time string */
+extern char* g_time_str;
+
+#endif