Makefile-gme

# build architecture inspired by this page:
# http://make.mad-scientist.net/papers/multi-architecture-builds/

ifeq ($(notdir $(CURDIR)), cirrusretro-players)
include target-gme.mk
else

TARGET:=cr-gme-$(GME_PLAYER).js

CC:=ccache emcc
CXX:=ccache em++
LD:=em++

GME_SRCDIR=$(SRCDIR)/gme-source-0.6.0
XZ_EMBEDDED_SRCDIR=$(SRCDIR)/xz-embedded

VPATH=$(SRCDIR):$(GME_SRCDIR):$(XZ_EMBEDDED_SRCDIR)
FINALDIR=$(SRCDIR)/final

EXPORT_LIST="['_crPlayerContextSize', '_crPlayerInitialize', '_crPlayerLoadFile', '_crPlayerSetTrack', '_crPlayerGenerateStereoFrames', '_crPlayerVoicesCanBeToggled', '_crPlayerGetVoiceCount', '_crPlayerGetVoiceName', '_crPlayerSetVoiceState', '_crPlayerCleanup', '_main']"

# the amount of memory that the Emscripten process gets to use
MEGABYTES=48
TOTAL_MEMORY=$(shell echo $(MEGABYTES)\*1024\*1024 | bc)

# GME source files, plus the Cirrus Retro glue file
GME_CXX_SOURCES:=gme_interface.cpp \
	Ay_Apu.cpp \
	Ay_Cpu.cpp \
	Ay_Emu.cpp \
	Blip_Buffer.cpp \
	Classic_Emu.cpp \
	Data_Reader.cpp \
	Dual_Resampler.cpp \
	Effects_Buffer.cpp \
	Fir_Resampler.cpp \
	Gb_Apu.cpp \
	Gb_Cpu.cpp \
	Gb_Oscs.cpp \
	Gbs_Emu.cpp \
	gme.cpp \
	Gme_File.cpp \
	Gym_Emu.cpp \
	Hes_Apu.cpp \
	Hes_Cpu.cpp \
	Hes_Emu.cpp \
	Kss_Cpu.cpp \
	Kss_Emu.cpp \
	Kss_Scc_Apu.cpp \
	M3u_Playlist.cpp \
	Multi_Buffer.cpp \
	Music_Emu.cpp \
	Nes_Apu.cpp \
	Nes_Cpu.cpp \
	Nes_Fme7_Apu.cpp \
	Nes_Namco_Apu.cpp \
	Nes_Oscs.cpp \
	Nes_Vrc6_Apu.cpp \
	Nsfe_Emu.cpp \
	Nsf_Emu.cpp \
	Sap_Apu.cpp \
	Sap_Cpu.cpp \
	Sap_Emu.cpp \
	Sms_Apu.cpp \
	Snes_Spc.cpp \
	Spc_Cpu.cpp \
	Spc_Dsp.cpp \
	Spc_Emu.cpp \
	Spc_Filter.cpp \
	Vgm_Emu.cpp \
	Vgm_Emu_Impl.cpp \
	Ym2413_Emu.cpp \
	Ym2612_Emu.cpp

#XZ-embedded sources
XZ_EMBEDDED_C_SOURCES:=xzdec.c \
	xz_crc32.c \
	xz_dec_lzma2.c \
	xz_dec_stream.c

# Emscripten gets nervous when C/C++ compile flags reference absolute paths;
# '-Wno-warn-absolute-paths' tells the compiler not to worry
GME_CXXFLAGS:=-Wall -Wno-warn-absolute-paths -Os -I$(GME_SRCDIR) -DHAVE_CONFIG_H -I$(GME_SRCDIR)/config-headers/$(GME_PLAYER)
GME_CXX_OBJECTS:=$(patsubst %.cpp,%.o,$(GME_CXX_SOURCES))

# build rule for GME C++ files
%.o : %.cpp
	$(CXX) -o $@ -c $< $(GME_CXXFLAGS)

XZ_EMBEDDED_C_FLAGS:= -Wall -Wno-warn-absolute-paths -Os -I$(XZ_EMBEDDED_SRCDIR)
XZ_EMBEDDED_C_OBJECTS:=$(patsubst %.c,%.o,$(XZ_EMBEDDED_C_SOURCES))

# build rule for XZ-embedded C files
%.o : %.c
	$(CC) -o $@ -c $< $(XZ_EMBEDDED_C_FLAGS)

$(TARGET): $(GME_CXX_OBJECTS) $(XZ_EMBEDDED_C_OBJECTS)
	$(LD) -o $(TARGET) $^ --memory-init-file 0 -Wall -Os -s EXPORTED_FUNCTIONS=$(EXPORT_LIST) -s TOTAL_MEMORY=$(TOTAL_MEMORY)
	mkdir -p $(FINALDIR)
	cp $(TARGET)* $(FINALDIR)

endif