Makefile: Fix compiler flags

* Reorder LDFLAGS to be passed after -o

* Get compiler/linker options from the system with ncurses5-config

Makefile

@@ -8,15 +8,15 @@ BIN = tty-clock
 PREFIX ?= /usr/local
 INSTALLPATH = ${DESTDIR}${PREFIX}/bin
 MANPATH = ${DESTDIR}${PREFIX}/share/man/man1
-CFLAGS = -Wall -g
-LDFLAGS = -lncurses
+CFLAGS = -Wall -g -I $$(ncurses5-config --includedir)
+LDFLAGS = -L $$(ncurses5-config --libdir) $$(ncurses5-config --libs)
 
 
 tty-clock : ${SRC}
 
 	@echo "build ${SRC}"
 	@echo "CC ${CFLAGS} ${LDFLAGS} ${SRC}"
-	@${CC} ${CFLAGS} ${LDFLAGS} ${SRC} -o ${BIN}
+	@${CC} ${CFLAGS} ${SRC} -o ${BIN} ${LDFLAGS}
 
 install : ${BIN}