.EXPORT_ALL_VARIABLES:
############################################################################
#
#  A Generic Microblaze config.arch that can be included by other platforms
#  to reduce the number of places that need to be edited when something
#  common changes.  If you include this file you may provide:
#
#  CPUFLAGS            - cpu specific flags to pass to the compiler
#  VENDOR_CFLAGS       - vendor specific flags to pass to the compiler
#  DISABLE_XIP         - set this to 1 to disable XIP code
#  DISABLE_SHARED_LIBS - set this to 1 to disable shared libraries
#  DISABLE_MOVE_RODATA - set this to 1 to disable moving rodata to text
#  LOPT                - library optimisation flags
#  UOPT                - user optimisation flags
#
#  Note:  Many of these are still unsupported on Microblaze!
#
#  John Williams    <jwilliams@itee.uq.edu.au>
#  	based upon m68k version by 
#  David McCullough <davidm@snapgear.com>
#
############################################################################
#
# Generic settings
#

ifndef CONSOLE_BAUD_RATE
CONSOLE_BAUD_RATE = 9600
endif

ifeq ($(ROOTDIR)/modules,$(wildcard $(ROOTDIR)/modules))
EXTRA_MODULE_DIRS = $(ROOTDIR)/modules
endif

ifndef VERSIONPKG
#define VERSIONPKG 1.0.0
endif

ifndef VERSIONSTR
VERSIONSTR = $(CONFIG_VENDOR)/$(CONFIG_PRODUCT) Version $(VERSIONPKG)
endif

############################################################################
#
# The makefiles need to know how to do things in different contexts
# To save some pain we put it all here
#
# First settings we always want for all builds
#

# ARCH = kernel,  TARGET_ARCH = uClibc

MACHINE       = microblaze
ARCH          = microblaze
CROSS_COMPILE = mb-
CROSS         = $(CROSS_COMPILE)

CC        = ucfront-gcc $(CROSS_COMPILE)gcc $(CPUFLAGS)
AS        = $(CROSS_COMPILE)as $(CPUFLAGS)
CXX       = ucfront-g++ $(CROSS_COMPILE)g++ $(CPUFLAGS)
AR        = $(CROSS_COMPILE)ar
LD        = $(CROSS_COMPILE)ld
OBJCOPY   = $(CROSS_COMPILE)objcopy
RANLIB    = $(CROSS_COMPILE)ranlib
ELF2FLT   = $(CROSS_COMPILE)elf2flt
STRIPTOOL = $(CROSS_COMPILE)strip
STRIP     = $(STRIPTOOL)

UCLINUX_BUILD_SET = 0					# have we set a special config below

# Pull in common definitions
include $(ROOTDIR)/vendors/config/common/config.arch

ifndef DISABLE_SHARED_LIBS
  ifeq ($(CONFIG_BINFMT_SHARED_FLAT),y)
	BUILD_SHARED = 1
  endif
endif

# Use the various processor config options to determine special
# compiler flags
# this is common to both apps and libs

# find where $(CROSS)gcc is living
GCC_DIR = $(shell $(CC) -v 2>&1|grep specs|sed -e 's/.* \(.*\)specs/\1\./')

# work out which gcc version we are using
GCC_VER = $(shell $(CC) -v 2>&1|grep version|cut -d " " -f 3)

# split into major and minor numbers
GCC_MAJOR = $(shell echo $(GCC_VER) | cut -d '.' -f 1)
GCC_MINOR = $(shell echo $(GCC_VER) | cut -d '.' -f 2)

# Clear the XILINX_EDK variable - it confuses mb-gcc.. ugh
XILINX_EDK=

# old style CONFIG defines...
ifdef CONFIG_MICROBLAZE_HARD_MULT
	HAS_HARD_MULT := y
endif

ifdef CONFIG_MICROBLAZE_HARD_DIV
	HAS_HARD_DIV := y
endif

ifdef CONFIG_MICROBLAZE_HARD_BARREL
	HAS_HARD_BARREL := y
endif

# and the new style
# Is the HW multiply instruction available?
# check if C_FAMILY contains spartan3, virtex2 or virtex4
ifneq (,$(findstring virtex2,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
	HAS_HARD_MULT := y
endif
ifneq (,$(findstring virtex4,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
	HAS_HARD_MULT := y
endif
ifneq (,$(findstring spartan3,$(CONFIG_XILINX_MICROBLAZE0_FAMILY)))
	HAS_HARD_MULT := y
endif

ifeq ($(CONFIG_XILINX_MICROBLAZE0_USE_BARREL),1)
	HAS_HARD_BARREL := y
endif

ifeq ($(CONFIG_XILINX_MICROBLAZE0_USE_DIV),1)
	HAS_HARD_DIV := y
endif

ifeq ($(CONFIG_XILINX_MICROBLAZE0_USE_FPU),1)
	HAS_FPU := y
endif

ifeq ($(CONFIG_XILINX_MICROBLAZE0_USE_PCMP_INSTR),1)
	HAS_PCMP_INSTR := y
endif

# Take the HAS_HARD_{BARREL|MUL|DIV} vars and convert into CFLAGS etc
ARCH_CPUFLAGS :=

# Hardware floating point support
ifeq ($(HAS_FPU),y)
	ARCH_CPUFLAGS += -mhard-float
else
	ARCH_CPUFLAGS += -msoft-float
endif

# Hardware comparison support
ifeq ($(HAS_PCMP_INSTR),y)
	ARCH_CPUFLAGS += -mxl-pattern-compare
endif

# Hardware multiplier
ifeq ($(HAS_HARD_MULT),y)
	ARCH_CPUFLAGS += -mno-xl-soft-mul
	LIBC_SUFFIX := _hard
else
	ARCH_CPUFLAGS += -mxl-soft-mul
	LIBC_SUFFIX := _soft
endif

# Hardware barrel shifter
ifeq ($(HAS_HARD_BARREL),y)
	ARCH_CPUFLAGS += -mxl-barrel-shift
	LIBC_SUFFIX := $(LIBC_SUFFIX)_shift
endif

# Hardware integer divide unit
ifeq ($(HAS_HARD_DIV),y)
	ARCH_CPUFLAGS += -mno-xl-soft-div
else
	ARCH_CPUFLAGS += -mxl-soft-div
endif

GCC_LIB = $(GCC_DIR)/libgcc.a $(GCC_DIR)/../../../../microblaze/lib/libc$(LIBC_SUFFIX).a 

# Set the UCFRONT_LINK_SUFFIX variable to have this tacked onto the 
# end of the ucfront command line.  This is such a hack.
ifeq ($(GCC_MAJOR),2)
	UCFRONT_LINK_SUFFIX = -lc $(GCC_LIB) -lc
endif

############################################################################
#
# General purpose lib building rules,  uClibc.config uses these when
# possible
#

ifdef UCLINUX_BUILD_LIB

  ifdef CONFIG_LIB_DEBUG
	CFLAGS  :=  $(if $(LOPT),$(LOPT),-O1) -g
  else
	CFLAGS  :=  $(if $(LOPT),$(LOPT),-O2) -g -fomit-frame-pointer
  endif
	CFLAGS  += -fno-common -fno-builtin -Wall #-Werror
	CFLAGS  += $(ARCH_CPUFLAGS) $(VENDOR_CFLAGS) -DEMBED

  ifdef BUILD_SHARED
	CFLAGS  += -mid-shared-library
  else
	ifndef DISABLE_XIP
	  CFLAGS  += -msep-data
	endif
  endif

	# don't want all the CFLAGS for uClibc/Config
	ARCH_CFLAGS := $(CPUFLAGS) $(CFLAGS)

	CFLAGS  += -Dlinux -D__linux__ -Dunix
	CFLAGS  += -D__uClinux__
	LDFLAGS += -Wl,-elf2flt

  ifndef DISABLE_MOVE_RODATA
  	LDFLAGS += -Wl,-move-rodata
  endif

	UCLINUX_BUILD_SET=1
endif

############################################################################
#
# Settings for building user apps
#

ifdef UCLINUX_BUILD_USER

  ifdef BUILD_SHARED
	LIBC          = -Wl,-R,$(ROOTDIR)/lib/libc.gdb $(SLIBC)
  endif
  ifdef CONFIG_USER_DEBUG
	CFLAGS  :=  $(if $(UOPT),$(UOPT),-O1) -g
  else
	CFLAGS  :=  $(if $(UOPT),$(UOPT),-Os) -g -fomit-frame-pointer
  endif

	CFLAGS  += -fno-common -fno-builtin -Wall #-Werror
	CFLAGS  += $(ARCH_CPUFLAGS) $(VENDOR_CFLAGS) -DEMBED


	# don't want all the CFLAGS for uClibc/Config
	ARCH_CFLAGS := $(CFLAGS)

	CFLAGS  += -Dlinux -D__linux__ -Dunix
	CFLAGS  += -D__uClinux__

	CXXFLAGS = $(CFLAGS) -nostdinc++ -fno-exceptions
	CXXSUP =

#	LDFLAGS += -nostartfiles $(ROOTDIR)/$(LIBCDIR)/lib/crt0.o
	LDFLAGS += -Wl,-elf2flt

  ifndef FLTFLAGS
	FLTFLAGS :=
  endif
	export FLTFLAGS

	# for anyone still using it
	CONVERT = /bin/true

	UCLINUX_BUILD_SET=1
endif

############################################################################
#
# fall through,  do other config options perhaps
#

ifeq ($(UCLINUX_BUILD_SET),1)
	EXTRA_CFLAGS := $(CPUFLAGS)

	CXXLIBS = $(LIBSTDCPP) $(CXXSUP)

	LDLIBS = $(LIBBIND)
endif

############################################################################