#-----------------------------------------------------------------------------------------
#A good makefile, by Pierre Chatelier and Jerome Cornet, Copyright 2006
#this Makefile understands <make> and <make clean>

#put the program name to build there
PROGRAM = foobarwiz

#just tell the source files. If you happen to use .cpp, .m, .mm, .hh..., then
#you will have to change the occurences of the tokens <%.c> and <%.h> in this file
SRCS = main.c \
	foo.c \
	bar.c \
	sub/wiz.c

#you may define a file to use precompiled headers
SRCSPRECOMP = precompile.h

#define the compiler and the linker
CC=gcc
LD=$(CC)

#to keep this file simple, we deliberately did not use CFLAGS, CPPFLAGS, LDFLAGS...
#feel free to add and use them in this file

#that's all
#-----------------------------------------------------------------------------------------
#everything below is automagic : dependencies, compilation... usually you do not modify it
#note that we force a dependency with the Makefile. We think that if you modify the Makefile,
#everything should be recompiled

#dependencies are created in a sub-directory .deps/$(PROGRAM)
#object files are created in a sub-directory .objs/$(PROGRAM)
DEPSDIR = .deps/$(PROGRAM)
OBJSDIR = .objs/$(PROGRAM)
DEPS = $(SRCS:%.c=$(DEPSDIR)/%.d)
OBJS = $(SRCS:%.c=$(OBJSDIR)/%.o)
DEPSPRECOMP = $(SRCSPRECOMP:%.h=$(DEPSDIR)/%.d)
OBJSPRECOMP = $(SRCSPRECOMP:%.h=%.h.gch)
CURRENTMAKEFILE=$(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))

#linkage
$(PROGRAM): $(DEPSPRECOMP) $(DEPS) $(OBJSPRECOMP) $(OBJS)
	$(LD) -o $@ $(OBJS)

#cleaning
.PHONY: clean
clean:
	-rm -rf $(DEPSPRECOMP) $(DEPSDIR) $(OBJSPRECOMP) $(OBJSDIR) $(PROGRAM)

#creating the dependencies of the %.c files
$(DEPSDIR)/%.d: %.c $(CURRENTMAKEFILE)
	@echo "Making dependencies for $<"
	@dirname $@ | xargs mkdir -p 2>/dev/null || echo "$@ already exists" >/dev/null
	@$(CC) -MM $< 2>/dev/null | sed 's#.*:# $@ :#1' > $@

#creating the dependencies of the %.h files, for the precompiled header
$(DEPSDIR)/%.d: %.h $(CURRENTMAKEFILE)
	@echo "Making dependencies for precompiled header $<"
	@dirname $@ | xargs mkdir -p 2>/dev/null || echo "$@ already exists" >/dev/null
	@$(CC) -MM $< 2>/dev/null | sed 's#.*:# $@ :#1' > $@

#compiling the precompiled header
%.h.gch:%.h $(DEPSPRECOMP) $(CURRENTMAKEFILE)
	@echo "Precompiling header $@..."
	@$(CC) -o $@ -c $< || echo "error. Disabling precompiled header"
	@echo "...Done"

#compiling source files
$(OBJSDIR)/%.o: %.c $(DEPSDIR)/%.d $(CURRENTMAKEFILE)
	@dirname $@ | xargs mkdir -p 2>/dev/null || echo "$@ already exists" >/dev/null
	$(CC) $(SRCSPRECOMP:%.h=-include %.h) -c $< -o $@

#include the dependencies, (if we are not actually performing a mere <make clean>)
ifneq ($(strip $(MAKECMDGOALS)),clean)
ifneq ($(strip $(DEPSPRECOMP)),)
-include $(DEPSPRECOMP)
endif
ifneq ($(strip $(DEPS)),)
-include $(DEPS)
endif
endif