# Makefile -- For the Direct Rendering Manager module (drm)
# Created: Mon Jan  4 09:26:53 1999 by faith@precisioninsight.com
#
# Copyright 1999 Precision Insight, Inc., Cedar Park, Texas.
# Copyright 2000 VA Linux Systems, Inc., Sunnyvale, California.
# 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 (including the next
# paragraph) 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
# PRECISION INSIGHT AND/OR ITS SUPPLIERS 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.
# 
#
# ***** NOTE NOTE NOTE NOTE NOTE *****
# To override the automatic Linux source tree determination, pass the
# pathname for the kernel that you want to compile on the command line,
# like this:
# 	make TREE=/usr/my-kernel-tree/include
#
#
# ***** NOTE NOTE NOTE NOTE NOTE *****
# Because some distributions patch 2.2.x kernels to make kill_fasync have
# three parameters, this script tries to determine, via the examination of
# header files, if your kernel has been patched.  If this detection is
# incorrect, you can override the value on the command line, like this:
# 	make PARAMS=2
# or
# 	make PARAMS=3

.SUFFIXES:

# *** Setup

# **** End of SMP/MODVERSIONS detection

MODS=           gamma.o tdfx.o r128.o
LIBS=           libdrm.a
PROGS=		drmstat

DRMOBJS=	init.o memory.o proc.o auth.o context.o drawable.o bufs.o \
		lists.o lock.o ioctl.o fops.o vm.o dma.o ctxbitmap.o
DRMHEADERS=	drm.h drmP.h

GAMMAOBJS=      gamma_drv.o gamma_dma.o
GAMMAHEADERS=   gamma_drv.h $(DRMHEADERS)

TDFXOBJS=       tdfx_drv.o tdfx_context.o
TDFXHEADERS=    tdfx_drv.h $(DRMHEADERS)

R128OBJS=	r128_drv.o r128_dma.o r128_bufs.o r128_context.o
R128HEADERS=	r128_drv.h r128_drm.h $(DRMHEADERS)

PROGOBJS=       drmstat.po xf86drm.po xf86drmHash.po xf86drmRandom.po sigio.po
PROGHEADERS=    xf86drm.h $(DRMHEADERS)

INC=		/usr/include

CFLAGS=		-O2 $(WARNINGS)
WARNINGS=	-Wall -Wwrite-strings -Wpointer-arith -Wcast-align \
		-Wstrict-prototypes -Wshadow -Wnested-externs \
		-Winline -Wpointer-arith
MODCFLAGS=      $(CFLAGS) -D__KERNEL__ -DMODULE -fomit-frame-pointer
PRGCFLAGS=      $(CFLAGS) -g -ansi -pedantic -DPOSIX_C_SOURCE=199309L \
		-D_POSIX_SOURCE -D_XOPEN_SOURCE -D_BSD_SOURCE -D_SVID_SOURCE \
		-I../../../../../../include -I../../../../../../../../include \
		-I../../../../../../../../programs/Xserver/hw/xfree86/common
PRGLIBS=

# **** Start of SMP/MODVERSIONS detection

# First, locate correct tree for this kernel version.  If we find a
# matching tree, we assume that we can rely on that tree's autoconf.h.
# This may not be correct, but it is the best assumption we can make.

VERSION := $(shell uname -r)
A := /usr/src/linux-$(VERSION)/include
B := /usr/src/linux/include
C := /usr/include

V := $(shell gcc -E -nostdinc -I$A picker.c 2>/dev/null \
      | grep -s 'RELEASE = ' | cut -d' ' -f3)
ifeq ($(V),"$(VERSION)")
TREE := $A
else
  V := $(shell gcc -E -nostdinc -I$B picker.c 2>/dev/null \
        | grep -s 'RELEASE = ' | cut -d' ' -f3)
ifeq ($(V),"$(VERSION)")
  TREE := $B
else
    V := $(shell gcc -E -nostdinc -I$C picker.c 2>/dev/null \
          | grep -s 'RELEASE = ' | cut -d' ' -f3)
ifeq ($(V),"$(VERSION)")
    TREE := $C
else
    TREE := 0
endif
endif
endif

ifeq ($(TREE),0)
all:; @echo Error: Could not locate kernel tree in $A $B $C
else
SMP := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
	| grep -s 'SMP = ' | cut -d' ' -f3)
MODVERSIONS := $(shell gcc -E -I $(TREE) picker.c 2>/dev/null \
	| grep -s 'MODVERSIONS = ' | cut -d' ' -f3)
AGP := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
	| grep -s 'AGP = ' | cut -d' ' -f3)
PARAMS := $(shell if fgrep kill_fasync $(TREE)/linux/fs.h \
	| fgrep -q band; then echo 3; else echo 2; fi)
ifeq ($(AGP),0)
AGP := $(shell gcc -E -nostdinc -I$(TREE) picker.c 2>/dev/null \
	| grep -s 'AGP_MODULE = ' | cut -d' ' -f3)
endif

ifeq ($(AGP),1)
MODCFLAGS += -DDRM_AGP
DRMOBJS += agpsupport.o
MODS += mga.o i810.o

MGAOBJS=	mga_drv.o mga_dma.o mga_bufs.o mga_state.o mga_context.o
MGAHEADERS=	mga_drv.h $(DRMHEADERS)

I810OBJS=	i810_drv.o i810_dma.o i810_bufs.o i810_context.o
I810HEADERS=	i810_drv.h $(DRMHEADERS)
endif

all::;@echo === KERNEL HEADERS IN $(TREE)
all::;@echo === SMP=${SMP} MODVERSIONS=${MODVERSIONS} AGP=${AGP}
all::;@echo === kill_fasync has $(PARAMS) parameters
all:: $(LIBS) $(MODS) $(PROGS)
endif

# **** End of SMP/MODVERSIONS detection

# **** Handle SMP/MODVERSIONS
ifeq ($(SMP),1)
MODCFLAGS += -D__SMP__
endif
ifeq ($(MODVERSIONS),1)
MODCFLAGS += -DMODVERSIONS -include $(TREE)/linux/modversions.h
endif
ifeq ($(PARAMS),3)
MODCFLAGS += -DKILLFASYNCHASTHREEPARAMETERS
endif

# **** End of configuration

libdrm.a: $(DRMOBJS)
	-$(RM) -f $@
	$(AR) rcs $@ $(DRMOBJS)

gamma.o: $(GAMMAOBJS) $(LIBS)
	$(LD) -r $^ -o $@

tdfx.o: $(TDFXOBJS) $(LIBS)
	$(LD) -r $^ -o $@

r128.o: $(R128OBJS) $(LIBS)
	$(LD) -r $^ -o $@

ifeq ($(AGP),1)
mga.o: $(MGAOBJS) $(LIBS)
	$(LD) -r $^ -o $@

i810.o: $(I810OBJS) $(LIBS)
	$(LD) -r $^ -o $@
endif

drmstat: $(PROGOBJS)
	$(CC) $(PRGCFLAGS) $^ $(PRGLIBS) -o $@

.PHONY: ChangeLog
ChangeLog:
	@rm -f Changelog
	@rcs2log -i 2 -r -l \
		| sed 's,@.*alephnull.com,@precisioninsight.com,' > ChangeLog


# .o files are used for modules
%.o: %.c
	$(CC) $(MODCFLAGS) -I$(TREE) -c $< -o $@

%.po: %.c
	$(CC) $(PRGCFLAGS) -DDRM_USE_MALLOC -c $< -o $@


$(DRMOBJS): $(DRMHEADERS)
$(GAMMAOBJS): $(GAMMAHEADERS)
$(TDFXOBJS): $(TDFXHEADERS)
$(R128OBJS): $(R128HEADERS)
ifeq ($(AGP),1)
$(MGAOBJS): $(MGAHEADERS)
$(I810OBJS): $(I810HEADERS)
endif
$(PROGOBJS): $(PROGHEADERS)

clean:
	rm -f *.o *.a *.po *~ core $(PROGS)