# GNU Makefile for cross-compiling quakespasm.exe (Win32 : MinGW)
# using cross-toolchains on a linux host	/ Aug. 31, 2010.
# "make DEBUG=1" to build a debug client.
# "make SDL_CONFIG=/path/to/sdl-config" for unusual SDL installations.
# "make WINSOCK2=1" to use WinSock2 api instead of old WinSock 1.1.
# "make SDLNET=1" to use SDL_net (not recommended) instead of platform
# specific code.

# ============================================================================
# Helper functions
# ============================================================================

check_gcc = $(shell if echo | $(CC) $(1) -S -o /dev/null -xc - > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi;)

# ============================================================================

# Enable/disable codecs for streaming music support:
USE_CODEC_WAVE=yes
USE_CODEC_MP3=yes
USE_CODEC_VORBIS=yes

DEBUG    ?= 0
WINSOCK2 ?= 0
SDLNET   ?= 0

TOPDIR := $(shell pwd)

# ---------------------------------------
# Define some build variables
# ---------------------------------------

TARGET=i686-pc-mingw32

CROSS_COMPILE=1

ifeq ($(CROSS_COMPILE),1)
TOOLCHAIN_PREFIX=$(TARGET)-
else
TOOLCHAIN_PREFIX=
endif

CC = $(TOOLCHAIN_PREFIX)gcc
WINDRES = $(TOOLCHAIN_PREFIX)windres
STRIP = $(TOOLCHAIN_PREFIX)strip

#CPUFLAGS= -mtune=i686
#CPUFLAGS= -march=pentium4
CPUFLAGS= 
DFLAGS ?=
CFLAGS ?= -Wall -Wno-trigraphs
# CFLAGS += -Werror
CFLAGS += $(CPUFLAGS)

ifneq ($(DEBUG),0)
DFLAGS += -DDEBUG
CFLAGS += -g
do_strip=
else
DFLAGS += -DNDEBUG
CFLAGS += -O2
CFLAGS += $(call check_gcc,-fweb,)
CFLAGS += $(call check_gcc,-frename-registers,)
cmd_strip=$(STRIP) $(1)
define do_strip
	$(call cmd_strip,$(1));
endef
endif

SDL_CONFIG ?= sdl-config
SDL_CFLAGS := $(shell $(SDL_CONFIG) --cflags)
SDL_LFLAGS := $(shell $(SDL_CONFIG) --libs)

ifeq ($(WINSOCK2),1)
DEFWINSOCK :=-D_USE_WINSOCK2
LIBWINSOCK := -lws2_32
else
DEFWINSOCK :=
LIBWINSOCK := -lwsock32
endif

ifeq ($(SDLNET),1)
NET_LIBS   := -lSDL_net
CFLAGS     +=-D_USE_SDLNET
else
CFLAGS     += $(DEFWINSOCK)
NET_LIBS   := $(LIBWINSOCK)
endif

CODECLIBS  :=
ifeq ($(USE_CODEC_WAVE),yes)
CFLAGS+= -DUSE_CODEC_WAVE
CODEC_INC = -I../Windows/codecs/include
CODEC_LINK= -L../Windows/codecs/x86
endif
ifeq ($(USE_CODEC_VORBIS),yes)
CFLAGS+= -DUSE_CODEC_VORBIS
CODEC_INC = -I../Windows/codecs/include
CODEC_LINK= -L../Windows/codecs/x86
CODECLIBS+= -lvorbis -lvorbisfile -logg
endif
ifeq ($(USE_CODEC_MP3),yes)
CFLAGS+= -DUSE_CODEC_MP3
CODEC_INC = -I../Windows/codecs/include
CODEC_LINK= -L../Windows/codecs/x86
CODECLIBS+= -lmad
endif
CFLAGS+= $(CODEC_INC)

COMMON_LIBS:= -lm -lopengl32

LIBS := $(COMMON_LIBS) $(NET_LIBS) $(CODEC_LINK) $(CODECLIBS)

# ---------------------------
# targets
# ---------------------------

.PHONY:	clean debug release

DEFAULT_TARGET := quakespasm.exe

# ---------------------------
# rules
# ---------------------------

%.o:	%.c
	$(CC) $(DFLAGS) -c $(CFLAGS) $(SDL_CFLAGS) -o $@ $^
%.res:	../Windows/%.rc
	$(WINDRES) --output-format=coff -I../Windows -o $@ $^

# ----------------------------------------------------------------------------
# objects
# ----------------------------------------------------------------------------

MUSIC_OBJS:= bgmusic.o \
	snd_codec.o \
	snd_wave.o \
	snd_vorbis.o \
	snd_mp3.o
COMOBJ_SND := snd_dma.o snd_mix.o snd_mem.o $(MUSIC_OBJS)
SYSOBJ_SND := snd_sdl.o
SYSOBJ_CDA := cd_sdl.o
SYSOBJ_INPUT := in_sdl.o
SYSOBJ_GL_VID:= gl_vidsdl.o
ifeq ($(SDLNET),1)
SYSOBJ_NET := net_sdl.o net_sdlnet.o
else
SYSOBJ_NET := net_win.o net_wins.o net_wipx.o
endif
SYSOBJ_SYS := pl_win.o sys_sdl_win.o
SYSOBJ_MAIN:= main_sdl.o
SYSOBJ_RES := QuakeSpasm.res

GLOBJS = \
	gl_refrag.o \
	gl_rlight.o \
	gl_rmain.o \
	gl_fog.o \
	gl_rmisc.o \
	r_part.o \
	r_world.o \
	gl_screen.o \
	gl_sky.o \
	gl_warp.o \
	$(SYSOBJ_GL_VID) \
	gl_draw.o \
	image.o \
	gl_texmgr.o \
	gl_mesh.o \
	r_sprite.o \
	r_alias.o \
	r_brush.o \
	gl_model.o

OBJS := \
	$(GLOBJS) \
	$(SYSOBJ_INPUT) \
	$(COMOBJ_SND) \
	$(SYSOBJ_SND) \
	$(SYSOBJ_CDA) \
	$(SYSOBJ_NET) \
	net_dgrm.o \
	net_loop.o \
	net_main.o \
	chase.o \
	cl_demo.o \
	cl_input.o \
	cl_main.o \
	cl_parse.o \
	cl_tent.o \
	console.o \
	keys.o \
	menu.o \
	sbar.o \
	view.o \
	wad.o \
	cmd.o \
	common.o \
	crc.o \
	cvar.o \
	host.o \
	host_cmd.o \
	mathlib.o \
	pr_cmds.o \
	pr_edict.o \
	pr_exec.o \
	sv_main.o \
	sv_move.o \
	sv_phys.o \
	sv_user.o \
	world.o \
	conback.o \
	zone.o \
	$(SYSOBJ_SYS) $(SYSOBJ_MAIN) $(SYSOBJ_RES)

# ------------------------
# build rules for mingw :
# ------------------------

quakespasm.exe:	$(OBJS)
	$(CC) $(CFLAGS) -o quakespasm.exe $(OBJS) $(SDL_LFLAGS) $(LIBS)
	$(call do_strip,$@)

release:	quakespasm.exe
debug:
	$(error Use "make DEBUG=1")

clean:
	rm -f $(shell find . \( -name '*~' -o -name '#*#' -o -name '*.o' -o -name '*.res' -o -name $(DEFAULT_TARGET) \) -print)