--- Makefile.orig	2021-08-04 11:14:19.000000000 -0500
+++ Makefile	2021-08-10 18:50:25.000000000 -0500
@@ -32,8 +32,8 @@
 CFLAGS+=$(CPPFLAGS)
 CFLAGS+=$(shell sh cflags.sh)
 
-DEFAULT_LIBS=-L/usr/X11R6/lib -L/usr/local/lib -lX11 -lXtst -lXinerama -lxkbcommon
-DEFAULT_INC=-I/usr/X11R6/include -I/usr/local/include
+DEFAULT_LIBS=-L$(PREFIX)/lib -lX11 -lXtst -lXinerama -lxkbcommon
+DEFAULT_INC=-I$(PREFIX)/include
 
 XDOTOOL_LIBS=$(shell pkg-config --libs x11 2> /dev/null || echo "$(DEFAULT_LIBS)")  $(shell sh platform.sh extralibs)
 LIBXDO_LIBS=$(shell pkg-config --libs xi x11 xtst xinerama xkbcommon 2> /dev/null || echo "$(DEFAULT_LIBS)")