+/* Are we happy to compile stuff, or just non-intrusive tests? */
+extern bool safe_mode;
+
+/* Where is the ccan dir? Available after first manifest. */
+extern const char *ccan_dir;
+
+/* Compiler and CFLAGS, from config.h if available. */
+extern char *compiler, *cflags;
+
+/* Contents of config.h (or NULL if not found) */
+extern const char *config_header;
+