Add menu system, fix Makefile

Makefile

@@ -1,20 +1,22 @@
-CC=clang
-CFLAGS=-std=c99 -Wall
-LD=clang
-LDFLAGS=-lgpio -lfigpar
-SRCS=src/main.c src/util.c src/lcd.c src/ths.c src/button.c
-PROG=rpi4b-temp-humidity
-
+# -*- mode: makefile -*-
 .include "config.mk"
 
+CC=clang
+CFLAGS=-std=c11 -Wall ${SQLITE3_CFLAGS}
+LD=clang
+LDFLAGS=-lgpio -lfigpar -lpthread ${SQLITE3_LDFLAGS}
+SRCS=src/main.c src/util.c src/lcd.c src/ths.c src/button.c src/screen.c
+PROG=rpi4b-temp-humidity
+
 OBJS=${SRCS:C/^src/bin/:C/.c$/.o/}
 bin/${PROG}: ${OBJS}
 	${LD} ${LDFLAGS} -o ${@} ${OBJS}
 
-main.o util.o lcd.o ths.o button.o: util.h
-main.o lcd.o: lcd.h
-main.o ths.o: ths.h
-main.o button.o: button.h
+bin/main.o bin/util.o bin/lcd.o bin/ths.o bin/button.o bin/screen.o: src/util.h
+bin/main.o bin/lcd.o bin/screen.o: src/lcd.h
+bin/main.o bin/ths.o bin/screen.o: src/ths.h
+bin/main.o bin/button.o bin/screen.o: src/button.h
+bin/main.o bin/screen.o: src/screen.h
 
 ${OBJS}: ${.TARGET:C/^bin/src/:C/.o$/.c/}
 	@mkdir -p bin/
@@ -27,7 +29,7 @@ ${OBJS}: ${.TARGET:C/^bin/src/:C/.o$/.c/}
 -DDEFAULT_FAIL_LIMIT="${DEFAULT_FAIL_LIMIT}"\
 -DDEFAULT_LCD_VERSION="\"${DEFAULT_LCD_VERSION}\""\
 -DDEFAULT_REFRESH_TIME="${DEFAULT_REFRESH_TIME}"\
--o ${@} ${.ALLSRC}
+-o ${@} ${.TARGET:C/^bin/src/:C/.o$/.c/}
 
 clean:
 	rm -rf bin/