# -*- mode: makefile -*-
.include "config.mk"

CC=clang
CFLAGS=-g -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/ui/screen.c\
     src/ui/datesel.c src/ui/statsby.c src/ui/datapoints.c src/ui/timesel.c\
     src/ui/statrange.c src/config.c src/ui/blankscreen.c src/drive.c\
     src/ui/exportscreen.c src/ui/setdatescreen.c src/ui/viewdatescreen.c\
	 src/ui/powerscreen.c src/ui/settzscreen.c src/ui/cleardatascreen.c
PROG=rpi4b-temp-humidity

all: config.conf bin/${PROG}

OBJS=${SRCS:C/^src/bin/:C/.c$/.o/}
bin/${PROG}: ${OBJS}
	${LD} ${LDFLAGS} -o ${@} ${OBJS}

bin/main.o bin/config.o: config.mk

bin/main.o bin/util.o bin/lcd.o bin/ths.o bin/button.o: src/util.h
bin/ui/screen.o bin/ui/statsby.o bin/ui/datesel.o: src/util.h
bin/ui/datapoints.o bin/ui/timesel.o bin/ui/statrange.o: src/util.h
bin/ui/viewdatescreen.o bin/ui/setdatescreen.o bin/ui/powerscreen.o: src/util.h
bin/ui/settzscreen.o bin/ui/cleardatascreen.o: src/util.h

bin/main.o bin/lcd.o bin/screen.o bin/ui/datesel.o: src/lcd.h
bin/ui/statsby.o bin/ui/timesel.o bin/ui/statrange.o: src/lcd.h
bin/ui/datapoints.o bin/ui/viewdatescreen.o: src/lcd.h
bin/ui/setdatescreen.o bin/ui/powerscreen.o: src/lcd.h
bin/ui/settzscreen.o bin/ui/cleardatascreen.o: src/lcd.h

bin/main.o bin/ui/screen.o bin/ui/statsby.o: src/ui/screen.h
bin/ui/datesel.o bin/ui/datapoints.o bin/ui/timesel.o: src/ui/screen.h
bin/ui/statrange.o bin/ui/setdatescreen.o: src/ui/screen.h
bin/ui/viewdatescreen.o bin/ui/powerscreen.o: src/ui/screen.h
bin/ui/settzscreen.o bin/ui/cleardatascreen.o: src/ui/screen.h

bin/main.o bin/ui/datesel.o bin/ui/statsby.o: src/ui/datesel.h
bin/ui/datapoints.o bin/ui/timesel.o bin/ui/statrange.o: src/ui/datesel.h
bin/ui/setdatescreen.o: src/ui/datesel.h

bin/main.o bin/ui/timesel.o bin/ui/datapoints.o: src/ui/timesel.h
bin/ui/statrange.o bin/ui/setdatescreen.o: src/ui/timesel.h

bin/main.o bin/ths.o: src/ths.h
bin/main.o bin/config.o: src/config.h
bin/main.o bin/button.o bin/ui/screen.o: src/button.h
bin/main.o bin/ui/statsby.o: src/ui/statsby.h
bin/main.o bin/ui/datapoints.o: src/ui/datapoints.h
bin/main.o bin/ui/blankscreen.o: src/ui/blankscreen.h
bin/main.o bin/ui/statrange.o: src/ui/statrange.h
bin/main.o bin/ui/exportscreen.o: src/ui/exportscreen.h
bin/main.o bin/ui/setdatescreen.o: src/ui/setdatescreen.h
bin/main.o bin/ui/viewdatescreen.o: src/ui/viewdatescreen.h
bin/main.o bin/ui/powerscreen.o: src/ui/powerscreen.h
bin/main.o bin/ui/settzscreen.o: src/ui/settzscreen.h
bin/main.o bin/ui/cleardatascreen.o: src/ui/cleardatascreen.h
bin/main.o bin/drive.o bin/ui/exportscreen.o: src/drive.h

.if "${DEFAULT_TEMP_UNIT}" != "F" && "${DEFAULT_TEMP_UNIT}" != "C" &&\
    "${DEFAULT_TEMP_UNIT}" != "c" && "${DEFAULT_TEMP_UNIT}" != "c"
.error Invalid temperature unit "${DEFAULT_TEMP_UNIT}"
.endif

DEFINES:=\
-DDEFAULT_CONFIG_PATH="${DEFAULT_CONFIG_PATH}"\
-DDEFAULT_GPIO_DEVICE="${DEFAULT_GPIO_DEVICE}"\
-DDEFAULT_TEMP_KEY="${DEFAULT_TEMP_KEY}"\
-DDEFAULT_HUMID_KEY="${DEFAULT_HUMID_KEY}"\
-DDEFAULT_FAIL_KEY="${DEFAULT_FAIL_KEY}"\
-DDEFAULT_FAIL_LIMIT="${DEFAULT_FAIL_LIMIT}"\
-DDEFAULT_DATABASE_LOCATION="${DEFAULT_DATABASE_LOCATION}"\
-DDEFAULT_REFRESH_TIME="${DEFAULT_REFRESH_TIME}"\
-DDEFAULT_TEMP_UNIT="${DEFAULT_TEMP_UNIT}"\
-DDEFAULT_EXPORT_FILE_NAME="${DEFAULT_EXPORT_FILE_NAME}"\
-DDEFAULT_TIMEZONE="${DEFAULT_TIMEZONE}"\

${OBJS}: ${.TARGET:C/^bin/src/:C/.o$/.c/}
	@mkdir -p ${.TARGET:H}
	${CC} ${CFLAGS} -c ${DEFINES} -o ${@} ${.TARGET:C/^bin/src/:C/.o$/.c/}

config.conf: config.conf.m4
	m4 ${DEFINES} config.conf.m4 >config.conf

install: all
	mkdir -p "${PREFIX}/bin"
	install -o root -g wheel "bin/${PROG}" "${PREFIX}/bin"
	mkdir -p "${PREFIX}/etc/rpi4b-temp-humidity"
	install -b -o root -g wheel -m 0644 config.conf "${PREFIX}/etc/rpi4b-temp-humidity"
	install -o root -g wheel -m 0555 rpi4b-temp-humidity "${PREFIX}/etc/rc.d"

clean:
	rm -rf config.conf bin/

.SUFFIXES: .c .o
.PHONY: all install clean