# GNU Makefile for cross-compiling quakespasm.exe (Win32 : MinGW)
# using cross-toolchains on a linux host	/ Apr. 24, 2010.
# "make DEBUG=1" builds debug client
# "make SDL_CONFIG=/path/to/sdl-config" for sdl-config from cross-compiled SDL

# ============================================================================
# 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;)

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

DEBUG    ?= 0

TOPDIR := $(shell pwd)

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

CC = i686-pc-mingw32-gcc
WINDRES = i686-pc-mingw32-windres
STRIP = i686-pc-mingw32-strip

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

ifneq ($(DEBUG),0)
DFLAGS += -DDEBUG
CFLAGS += -g
#STRIP_CMD := @echo "not stripping"
STRIP_CMD := @/bin/true
else
DFLAGS += -DNDEBUG
CFLAGS += -O2
CFLAGS += $(call check_gcc,-fweb,)
CFLAGS += $(call check_gcc,-frename-registers,)
STRIP_CMD := $(STRIP)
endif

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

SDL_LIBS   := SDL_net

COMMON_LIBS:= m opengl32

LIBS := $(patsubst %,-l%,$(COMMON_LIBS) $(SDL_LIBS))

# ---------------------------
# 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
# ----------------------------------------------------------------------------

OBJS := \
cd_sdl.o    console.o    gl_rmain.o   host.o      net_main.o    r_part.o    sv_move.o \
chase.o     crc.o        gl_rmisc.o   image.o     net_sdlnet.o  r_sprite.o  sv_phys.o \
cl_demo.o   cvar.o       gl_screen.o  in_sdl.o    net_sdl.o     r_world.o   sv_user.o \
cl_input.o  gl_draw.o    gl_sky.o     keys.o      pl_win.o      sbar.o      sys_sdl.o \
cl_main.o   gl_fog.o     main.o       pr_cmds.o   snd_dma.o     view.o \
cl_parse.o  gl_mesh.o    gl_texmgr.o  mathlib.o   pr_edict.o    snd_mem.o   wad.o \
cl_tent.o   gl_model.o   gl_vidsdl.o  menu.o      pr_exec.o     snd_mix.o   world.o \
cmd.o       gl_refrag.o  gl_warp.o    net_dgrm.o  r_alias.o     snd_sdl.o   zone.o \
common.o    gl_rlight.o  host_cmd.o   net_loop.o  r_brush.o     sv_main.o   conback.o \
QuakeSpasm.res

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

quakespasm.exe:	$(OBJS)
	$(CC) $(CFLAGS) -o quakespasm.exe $(OBJS) $(SDL_LFLAGS) $(LIBS)
	$(STRIP_CMD) quakespasm.exe

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)