fix Makefile and README.md for 2019/karns

2019/karns/Makefile

@@ -104,8 +104,8 @@ CINCLUDE=
 #CINCLUDE= -include stdlib.h
 #CINCLUDE= -include stdio.h
 #CINCLUDE= -include stdlib.h -include stdio.h
-#CINCLUDE= -I ${X11_INCDIR}
-#CINCLUDE= -I ${HOMEBREW_PREFIX}/include/SDL2
+#CINCLUDE= -I ${X11_INCDIR} -I ${X11_INCDIR}/X11
+#CINCLUDE= `${SDL2_CONFIG} --cflags`
 
 # Optimization
 #
@@ -129,7 +129,7 @@ CFLAGS= ${CSTD} ${CWARN} ${ARCH} ${CDEFINE} ${CINCLUDE} ${OPT}
 LIBS=
 #LIBS= -lm
 #LIBS= -L ${X11_LIBDIR} -lX11
-#LIBS= -L ${HOMEBREW_PREFIX}/lib -lSDL
+#LIBS= `${SDL2_CONFIG} --libs`
 
 # C compiler to use
 #
@@ -168,7 +168,8 @@ ENTRY= karns
 PROG= prog
 #
 OBJ= ${PROG}.o
-DATA=
+CSRC= ${PROG}.o
+DATA= maze demo.sh
 TARGET= ${PROG}
 #
 ALT_OBJ=
@@ -189,9 +190,6 @@ all: data ${TARGET}
 ${PROG}: ${PROG}.c
 	${CC} ${CFLAGS} $< -o $@ ${LIBS}
 
-test: ${PROG}
-	${CAT} ${PROG}.c | ./${PROG}
-
 # alternative executable
 #
 alt: data ${ALT_TARGET}