makefile

# This is a makefile for building the emulator on OSX.
#
# make targets:
#
# make         -- shorthand for "make debug"
# make debug   -- non-optimized wangemu build, and generate tags
# make opt     --     optimized wangemu build, and generate tags
# make tags    -- make ctags index from files in src/
# make clean   -- remove all build products
# make release -- create a "release" directory containing the app bundle and support files
# make dmg     -- package the release files into a .dmg disk image

.PHONY: debug opt tags clean release dmg

# Add .d to Make's recognized suffixes.
.SUFFIXES: .c .cpp .mm .d .o

# don't create dependency files for these targets
NODEPS := clean tags

# Find all the source files in the src/ directory
CPP_SOURCES := $(shell find src -name "*.cpp")
C_SOURCES   := $(shell find src -name "*.c")
MM_SOURCES  := $(shell find src -name "*.mm")
H_SOURCES   := $(shell find src -name "*.h")

# These are the dependency files, which make will clean up after it creates them
DEPFILES := $(patsubst %.cpp,%.d,$(CPP_SOURCES)) \
	    $(patsubst %.c,%.d,$(C_SOURCES))     \
            $(patsubst %.mm,%.d,$(MM_SOURCES))

OBJFILES := $(patsubst src/%.cpp,obj/%.o,$(CPP_SOURCES)) \
	    $(patsubst src/%.c,obj/%.o,$(C_SOURCES))     \
	    $(patsubst src/%.mm,obj/%.o,$(MM_SOURCES))

# debug build
debug: OPTFLAGS := -g -O0
debug: wangemu tags

# optimized build
opt: OPTFLAGS := -O2
opt: wangemu tags

CXX         := `wx-config --cxx`
CXXFLAGS    := `wx-config --cxxflags` -fno-common
CXXWARNINGS := -Wall -Wextra -Wshadow -Wformat -Wundef -Wstrict-aliasing=1 \
               -Wno-deprecated-declarations \
               -Wno-ctor-dtor-privacy -Woverloaded-virtual 
LDFLAGS     := `wx-config --libs`

# don't create dependencies when we're cleaning, for instance
ifeq (0, $(words $(findstring $(MAKECMDGOALS), $(NODEPS))))
    -include $(DEPFILES)
endif

# ===== create the dependency files =====

src/%.d: src/%.cpp
	$(CXX) $(CXXFLAGS) -MM -MT '$(patsubst src/%.cpp,obj/%.o,$<)' $< -MF $@

src/%.d: src/%.c
	$(CXX) $(CXXFLAGS) -MM -MT '$(patsubst src/%.c,obj/%.o,$<)' $< -MF $@

src/%.d: src/%.mm
	$(CXX) $(CXXFLAGS) -MM -MT '$(patsubst src/%.mm,obj/%.o,$<)' $< -MF $@

# ===== build the .o files =====

obj/%.o: src/%.cpp src/%.d
	@mkdir -p $(dir $@)
	$(CXX) $(OPTFLAGS) $(CXXFLAGS) $(CXXWARNINGS) -o $@ -c $<

obj/%.o: src/%.c src/%.d
	@mkdir -p $(dir $@)
	$(CXX) $(OPTFLAGS) $(CXXFLAGS) -o $@ -c $<

obj/%.o: src/%.mm src/%.d
	@mkdir -p $(dir $@)
	$(CXX) $(OPTFLAGS) $(CXXFLAGS) $(CXXWARNINGS) -o $@ -c $<

# ==== link step ====

wangemu: $(OBJFILES)
	$(CXX) $(LDFLAGS) $(OBJFILES) -o wangemu

# ==== build ctags index file ====

tags: src/tags
src/tags: $(CPP_SOURCES) $(C_SOURCES) $(H_SOURCES)
	(cd src; ctags *.h *.cpp *.c >& /dev/null)

# ===== build a release directory =====

release:
	@./make_release

# ===== build the dmg disk image =====

dmg:
	@./make_dmg

# ===== clean build products =====

clean:
	rm -f src/*.d src/tags obj/*.o *.dmg
	rm -rf release