# Mesa 3-D graphics library
# Version:  5.1
# 
# Copyright (C) 1999-2003  Brian Paul   All Rights Reserved.
# 
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
# 
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
# 
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
# BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

# DOS/DJGPP core makefile v1.7 for Mesa
#
#  Copyright (C) 2002 - Daniel Borca
#  Email : dborca@users.sourceforge.net
#  Web   : http://www.geocities.com/dborca


#
#  Available options:
#
#    Environment variables:
#	CFLAGS
#
#	GLIDE		path to Glide3 SDK; used with FX.
#			default = $(TOP)/glide3
#	FX=1		build for 3dfx Glide3. Note that this disables
#			compilation of most DMesa code and requires fxMesa.
#			As a consequence, you'll need the DJGPP Glide3
#			library to build any application.
#			default = no
#	X86=1		optimize for x86 (if possible, use MMX, SSE, 3DNow).
#			default = no
#
#    Targets:
#	all:		build GL
#	clean:		remove object files
#


.PHONY: all clean
.INTERMEDIATE: x86/gen_matypes.exe

TOP = ../..
GLIDE ?= $(TOP)/glide3
LIBDIR = $(TOP)/lib
GL_LIB = libgl.a
GL_DXE = gl.dxe
GL_IMP = libigl.a

export LD_LIBRARY_PATH := $(LD_LIBRARY_PATH);$(LIBDIR);$(GLIDE)/lib

CC = gcc
CFLAGS += $(INCLUDE_DIRS)
CFLAGS += -DUSE_EXTERNAL_DXTN_LIB=1
ifeq ($(FX),1)
CFLAGS += -D__DOS__
CFLAGS += -I$(GLIDE)/include -DFX
LIBNAME = "Mesa/FX DJGPP"
else
LIBNAME = "Mesa DJGPP"
endif

AR = ar
ARFLAGS = crus

HAVEDXE3 = $(wildcard $(DJDIR)/bin/dxe3gen.exe)

ifeq ($(wildcard $(addsuffix /rm.exe,$(subst ;, ,$(PATH)))),)
UNLINK = del $(subst /,\,$(1))
else
UNLINK = $(RM) $(1)
endif

include sources

ifeq ($(X86),1)
CFLAGS += -DUSE_X86_ASM
CFLAGS += -DUSE_MMX_ASM
CFLAGS += -DUSE_SSE_ASM
CFLAGS += -DUSE_3DNOW_ASM
X86_SOURCES += $(X86_API)
else
X86_SOURCES =
endif

DRIVER_SOURCES = \
	drivers/dos/dmesa.c
ifeq ($(FX),1)
DRIVER_SOURCES += \
	$(GLIDE_DRIVER_SOURCES)
else
DRIVER_SOURCES += \
	$(OSMESA_DRIVER_SOURCES) \
	drivers/dos/video.c \
	drivers/dos/vesa.c \
	drivers/dos/blit.S \
	drivers/dos/vga.c \
	drivers/dos/null.c \
	drivers/dos/dpmi.c
endif

SOURCES = $(CORE_SOURCES) $(X86_SOURCES) $(COMMON_DRIVER_SOURCES) $(DRIVER_SOURCES)

OBJECTS = $(addsuffix .o,$(basename $(SOURCES)))

X86_OBJECTS = $(addsuffix .o,$(basename $(X86_SOURCES)))

.c.o:
	$(CC) -o $@ $(CFLAGS) -c $<
.S.o:
	$(CC) -o $@ $(CFLAGS) -c $<
.s.o:
	$(CC) -o $@ $(CFLAGS) -x assembler-with-cpp -c $<

all: $(LIBDIR)/$(GL_LIB) $(LIBDIR)/$(GL_DXE) $(LIBDIR)/$(GL_IMP)

$(LIBDIR)/$(GL_LIB): $(OBJECTS)
	$(AR) $(ARFLAGS) $@ $^

$(LIBDIR)/$(GL_DXE) $(LIBDIR)/$(GL_IMP): $(OBJECTS)
ifeq ($(HAVEDXE3),)
	$(warning Missing DXE3 package... Skipping $(GL_DXE))
else
ifeq ($(FX),1)
	-dxe3gen -o $(LIBDIR)/$(GL_DXE) -Y $(LIBDIR)/$(GL_IMP) -D $(LIBNAME) -E _gl -E _DMesa -P glide3x.dxe -U $^
else
	-dxe3gen -o $(LIBDIR)/$(GL_DXE) -Y $(LIBDIR)/$(GL_IMP) -D $(LIBNAME) -E _gl -E _DMesa -U $^
endif
endif

$(X86_OBJECTS): x86/matypes.h

x86/matypes.h: x86/gen_matypes.exe
	$< > $@

x86/gen_matypes.exe: x86/gen_matypes.c
	$(CC) -o $@ $(CFLAGS) -s $<

clean:
	-$(call UNLINK,array_cache/*.o)
	-$(call UNLINK,glapi/*.o)
	-$(call UNLINK,main/*.o)
	-$(call UNLINK,math/*.o)
	-$(call UNLINK,shader/*.o)
	-$(call UNLINK,sparc/*.o)
	-$(call UNLINK,ppc/*.o)
	-$(call UNLINK,swrast/*.o)
	-$(call UNLINK,swrast_setup/*.o)
	-$(call UNLINK,tnl/*.o)
	-$(call UNLINK,x86/*.o)
	-$(call UNLINK,drivers/common/*.o)
	-$(call UNLINK,drivers/dos/*.o)
	-$(call UNLINK,drivers/glide/*.o)