#CPPFLAGS Extra flags to give to the C preprocessor and programs that use it (the C and Fortran compilers).
#CFLAGS   Extra flags to give to the C compiler.
#CXXFLAGS Extra flags to give to the C++ compiler.
#LDFLAGS  Extra flags to give to compilers when they are supposed to invoke the linker, 'ld'.

#Standard variables:
CC  = gcc
CXX = g++
LEX = lex
YACC= yacc
CFLAGS   = -Wall $(DEBUGFLAGS) $(SDL_CFLAGS)
CXXFLAGS = -Wall $(DEBUGFLAGS) $(SDL_CFLAGS)
LFLAGS =
YFLAGS = -d
LDFLAGS  = $(SDL_LDFLAGS)

#My variables:
#DEBUGFLAGS = -g -ggdb
SDL_CFLAGS := $(shell sdl-config --cflags)
SDL_LDFLAGS := $(shell sdl-config --libs) -lSDL_image

#List of files
PROG = tile       #Name of executable file

#=====================================#
#  No need to change below this line  #
#=====================================#

OBJECTS = main.o tileset.o

#Basic rules
.PHONY: all clean
all: $(PROG)

clean:
	for a in $(OBJECTS) $(PROG); do \
		rm -f $$a ; \
	done

$(PROG): $(OBJECTS)
	$(CC) $(LDFLAGS) -o $@ $^



#Some implicit rules
main.o: main.c
tileset.o: tileset.c


#Some header dependency
main.o: common.h tileset.h
tileset.o: tileset.h


#The variables:
# $@ - The name of the target of the rule.
# $? - The names of all the prerequisites that are newer than the target.
# $< - The name of the first prerequisite.
# $^ - The names of all the prerequisites.

#Pattern-rules
%.o: %.c
	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<
%.o: %.cpp
	$(CXX) -c $(CPPFLAGS) $(CXXFLAGS) -o $@ $<
%.o: %.h
%.c: %.l
	lex $(LFLAGS) -t $< > $@
%.cpp: %.l
	lex $(LFLAGS) -t $< > $@
%.c: %.y
	yacc $<
	mv -f y.tab.c $@
%.cpp: %.y
	yacc $(YFLAGS) $<
	mv -f y.tab.c $@