Add some commented out flags to linux hints file

include/config.h

@@ -522,6 +522,10 @@ typedef unsigned char uchar;
    but it isn't necessary for successful operation of the program */
 #define FREE_ALL_MEMORY             /* free all memory at exit */
 
+/* EXTRA_SANITY_CHECKS adds extra impossible calls,
+ * probably not useful for normal play */
+/* #define EXTRA_SANITY_CHECKS */
+
 /* EDIT_GETLIN makes the string input in TTY, Qt4, and X11
    so some prompts will remember the previously input text
    (within the same session) */

sys/unix/hints/linux

@@ -28,6 +28,12 @@ CFLAGS+=-DHACKDIR=\"$(HACKDIR)\"
 CFLAGS+=-DDUMPLOG
 CFLAGS+=-DCONFIG_ERROR_SECURE=FALSE
 CFLAGS+=-DCURSES_GRAPHICS
+#CFLAGS+=-DEXTRA_SANITY_CHECKS
+#CFLAGS+=-DEDIT_GETLIN
+#CFLAGS+=-DSCORE_ON_BOTL
+#CFLAGS+=-DMSGHANDLER
+#CFLAGS+=-DTTY_TILES_ESCCODES
+#CFLAGS+=-DDLB
 
 LINK=$(CC)
 # Only needed for GLIBC stack trace:
@@ -37,6 +43,10 @@ WINSRC = $(WINTTYSRC) $(WINCURSESSRC)
 WINOBJ = $(WINTTYOBJ) $(WINCURSESOBJ)
 WINLIB = $(WINTTYLIB) $(WINCURSESLIB)
 
+# if TTY_TILES_ESCCODES
+#WINSRC += tile.c
+#WINOBJ += tile.o
+
 WINTTYLIB=-lcurses
 
 CHOWN=true