# Shave and a Haircut
# (c) 2019 Epic Games
# US Patent 6720962

####################################################################
#
#		Maya/V-Ray Version & Location
#
####################################################################

ifndef MAYA_LOCATION
$(error "MAYA_LOCATION is not defined")
endif

ifeq ($(wildcard $(MAYA_LOCATION)),)
$(error "MAYA_LOCATION contains '$(MAYA_LOCATION)', which does not exist.")
endif

ifndef SHAVE_VRAY_SDKS
$(error "SHAVE_VRAY_SDKS is not defined")
endif

ifndef VRAY_VERSION
$(error "VRAY_VERSION is not defined")
endif

#  We use two-digit tags to identify build products which serve a range
#  of V-Ray versions.
#
vrayTag := $(shell ../vrayPlug/getVersionTag.sh $(VRAY_VERSION))

ifeq ($(vrayTag),)
    $(error "Unrecognized V-Ray version '$(VRAY_VERSION)'.")
endif

versionInfo := $(shell ../utils/getMayaAPIVersion.sh)
mayaAPI := $(word 1,$(versionInfo))
mayaVersion := $(word 2,$(versionInfo))
mayaMajorVersion := $(word 3, $(versionInfo))
mayaMinorVersion := $(word 4, $(versionInfo))
mayaDirVersion := $(word 6, $(versionInfo))

bits := 64


####################################################################
#
#		Linux Version
#
####################################################################

osVersion := $(shell ../utils/getos.sh)

ifeq ($(osVersion),)
    $(error "Operating system type not recognized.  Is /etc/issue present?")
endif

arch := $(shell ../utils/getarch.sh)


####################################################################
#
#		Compiler & Linker
#
####################################################################

#
# Some versions of Maya use non-standard versions of gcc, which are
# expected to be installed in /opt (e.g. /opt/gcc322)
#
CFLAGS		= -pipe -D_BOOL -DUNIX -DLINUX -DFUNCPROTO -D_GNU_SOURCE \
			-DREQUIRE_IOSTREAM -Wall -Wall \
			-Wno-deprecated -fno-gnu-keywords
C++		= $(shell ../utils/getg++vray.sh $(mayaVersion) $(vrayTag))

ifeq ($(C++),)
    $(error "Maya version $(mayaVersion) not supported.")
endif

CFLAGS		+= -fPIC -DBits64_ -DLINUX_64 -march=athlon64 -m64 -fpermissive \
				-Dnullptr=0

ifdef debug
_DEBUG=1
endif

ifdef DEBUG
_DEBUG=1
endif

ifdef _DEBUG
# It's tempting to add -gstabs+ here to get more C++ specific info, but
# that confuses gdb with the result that it gives 'Cannot access memory'
# errors when you try to print local vars or member vars.
CFLAGS += -D_DEBUG -O0 -g -ggdb -fno-inline
else
CFLAGS += -O3
endif

ifdef _INSECURE
CFLAGS += -D_INSECURE
endif

ifdef _BETA
CFLAGS += -D_BETA
endif

ifdef SHAVE_PROFILE
profile = 1
endif

ifdef profile
CFLAGS += -g
endif

C++FLAGS    = $(CFLAGS) $(WARNFLAGS)

ifeq ($(vrayTag),40)
    CFLAGS += -std=c++11
else
ifeq ($(shell echo '$(mayaAPI) >= 20180000' | bc),1)
    C++FLAGS += -std=c++0x
endif
endif

INCLUDES    = -I. -isystem $(MAYA_LOCATION)/include -isystem /usr/X11R6/include
LD          = $(C++) -shared $(C++FLAGS)
LIBS        = -L$(MAYA_LOCATION)/lib -L/usr/X11R6/lib -lOpenMaya -lOpenMayaFX -lOpenMayaRender -lOpenMayaUI -lOpenMayaAnim -lFoundation -lGLU -lGL -lpthread


####################### Vray stuff #################################
# vlad |23Apr2010
#
INCLUDES	+= -I$(SHAVE_VRAY_SDKS)/$(VRAY_VERSION)/include
VRAY_LIBS	:= $(firstword $(wildcard ../vrayPlug/libs/vray$(vrayTag)/linux_x64/*))
LIBS		+= -L$(SHAVE_VRAY_SDKS)/$(VRAY_VERSION)/lib/linux -l plugman_s -lvutils_s
####################################################################

####################################################################
#
#		Specific Build Rules
#
####################################################################

OBJFILE := shaveVray$(vrayTag)Exporter.o
TARGET := vray/libShaveVray$(vrayTag)Exporter.so

all: $(TARGET)

$(TARGET):	$(OBJFILE)
	-rm -f $@
	$(LD) -o $@ $(OBJFILE) \
		-Wl,-Bsymbolic -Wl,--allow-shlib-undefined \
		$(LIBS)

$(OBJFILE): shaveVrayExporterImpl.cpp
	$(C++) -c $(INCLUDES) $(C++FLAGS) -o $(OBJFILE) $<

####################################################################
#
#			Cleanup
#
####################################################################

clean:
	-rm -f *.o

Clean:
	-rm -f *.o *.so *.bak