--- NetHack-NetHack-3.6.6_Released.ORIG/sys/unix/hints/macosx10.10	2020-03-08 12:29:31.000000000 -0500
+++ NetHack-NetHack-3.6.6_Released/sys/unix/hints/macosx10.10	2020-04-25 23:10:10.000000000 -0500
@@ -19,10 +19,12 @@
 
 # 1. Which window system(s) should be included in this binary?
 WANT_WIN_TTY=1
-#WANT_WIN_X11=1
+WANT_WIN_X11=1
 #WANT_WIN_QT=1
 #WANT_WIN_CURSES=1
 
+PREFIX:=$(DESTDIR)__PREFIX__
+
 # 1a. What is the default window system?
 WANT_DEFAULT=tty
 #WANT_DEFAULT=x11
@@ -111,7 +113,7 @@
 # -x: if built without dlb, some versions of mkfontdir think *.lev are fonts
 POSTINSTALL+= bdftopcf win/X11/nh10.bdf > $(HACKDIR)/nh10.pcf; ( cd $(HACKDIR); mkfontdir -x .lev );
 # separate from CFLAGS so that we don't pass it to every file
-X11CFLAGS = -I/opt/X11/include
+X11CFLAGS = -I$(PREFIX)/include
 CFLAGS += -DX11_GRAPHICS
 # avoid repeated complaints about _X_NONNULL(args...) in <X11/Xfuncproto.h>
 X11CFLAGS += -Wno-variadic-macros
@@ -123,5 +125,5 @@
 WINSRC += $(WINX11SRC)
 WINOBJ += $(WINX11OBJ)
 WINLIB += $(WINX11LIB)
-LFLAGS=-L/opt/X11/lib
+LFLAGS=-L$(PREFIX)/lib
 endif	# WANT_WIN_X11

 ifdef WANT_WIN_QT