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TOPDIR:=$(shell pwd)

APP_DIR:=$(TOPDIR)/application
PKG_DIR:=$(TOPDIR)/package
RTAI_DIR:=$(TOPDIR)/rtai-3.1-2.6
LINUX_DIR:=$(TOPDIR)/linux-2.6.10
TARGET_DIR:=$(TOPDIR)/target
INCLUDE_DIR:=$(TOPDIR)/include
DEVKIT_DIR:=$(TOPDIR)/devkit
PLC_DIR:=$(DEVKIT_DIR)/plc-polux
BUSYBOX_DIR:=$(APP_DIR)/busybox
BINARIES_DIR=$(TOPDIR)/binaries
HG_DIR:=$(shell find -maxdepth 1 -name .hg)

export TOPDIR LINUX_DIR INCLUDE_DIR APP_DIR

BUNDLETEST = $(shell find . -maxdepth 1 -name devkit)
ifeq ($(findstring devkit,$(BUNDLETEST)), devkit)
CONFIG_CONFIG_IN=Config_dev.in
else
CONFIG_CONFIG_IN=Config_bundle.in
endif
CONFIG_DEFCONFIG=default.config
CONFIG=package/config
DATE:=$(shell date -u +%Y%m%d)

# default commands
CROSS_COMPILE=arm-uclinux-

noconfig_targets:=menuconfig config oldconfig randconfig \
	defconfig allyesconfig allnoconfig release tags \
	source-check help

# Use shell variables, if defined
ifneq ($(BUILDROOT_LOCAL),)
BR_LOCAL:=$(BUILDROOT_LOCAL)
else
BR_LOCAL:=$(TOPDIR)/local
endif

# $(shell find . -name *_defconfig |sed 's/.*\///')

# Pull in the user's configuration file
ifeq ($(filter $(noconfig_targets),$(MAKECMDGOALS)),)
ifeq ($(BOARD),)
# if "make BOARD=xyz" command
-include .config
else
# if "make" command
-include $(BR_LOCAL)/$(BOARD)/$(BOARD).config
endif
endif

# Override BR_DL_DIR if shell variable defined
ifneq ($(BUILDROOT_DL_DIR),)
BR_DL_DIR:=$(BUILDROOT_DL_DIR)
endif
LOCAL:=$(BR_LOCAL)

# To put more focus on warnings, be less verbose as default
# Use 'make V=1' to see the full commands
ifdef V
  ifeq ("$(origin V)", "command line")
    KBUILD_VERBOSE=$(V)
  endif
endif
ifndef KBUILD_VERBOSE
  KBUILD_VERBOSE=0
endif

ifeq ($(KBUILD_VERBOSE),1)
  quiet=
  Q=
ifndef VERBOSE
  VERBOSE=1
endif
else
  quiet=quiet_
  Q=@
endif

CONFIG_SHELL:=$(shell if [ -x "$$BASH" ]; then echo $$BASH; \
	else if [ -x /bin/bash ]; then echo /bin/bash; \
	else echo sh; fi; fi)

export CONFIG_SHELL quiet Q KBUILD_VERBOSE VERBOSE

ifndef HOSTAR
HOSTAR:=ar
endif
ifndef HOSTAS
HOSTAS:=as
endif
ifndef HOSTCC
HOSTCC:=gcc
else
endif
ifndef HOSTCXX
HOSTCXX:=g++
endif
ifndef HOSTFC
HOSTFC:=gfortran
endif
ifndef HOSTCPP
HOSTCPP:=cpp
endif
ifndef HOSTLD
HOSTLD:=ld
endif
ifndef HOSTLN
HOSTLN:=ln
endif
ifndef HOSTNM
HOSTNM:=nm
endif
HOSTAR:=$(shell $(CONFIG_SHELL) -c "which $(HOSTAR)" || type -p $(HOSTAR) || echo ar)
HOSTAS:=$(shell $(CONFIG_SHELL) -c "which $(HOSTAS)" || type -p $(HOSTAS) || echo as)
HOSTCC:=$(shell $(CONFIG_SHELL) -c "which $(HOSTCC)" || type -p $(HOSTCC) || echo gcc)
HOSTCXX:=$(shell $(CONFIG_SHELL) -c "which $(HOSTCXX)" || type -p $(HOSTCXX) || echo g++)
HOSTFC:=$(shell $(CONFIG_SHELL) -c "which $(HOSTLD)" || type -p $(HOSTLD) || echo || which g77 || type -p g77 || echo gfortran)
HOSTCPP:=$(shell $(CONFIG_SHELL) -c "which $(HOSTCPP)" || type -p $(HOSTCPP) || echo cpp)
HOSTLD:=$(shell $(CONFIG_SHELL) -c "which $(HOSTLD)" || type -p $(HOSTLD) || echo ld)
HOSTLN:=$(shell $(CONFIG_SHELL) -c "which $(HOSTLN)" || type -p $(HOSTLN) || echo ln)
HOSTNM:=$(shell $(CONFIG_SHELL) -c "which $(HOSTNM)" || type -p $(HOSTNM) || echo nm)
ifndef CFLAGS_FOR_BUILD
CFLAGS_FOR_BUILD:=-g -O2
endif
ifndef CXXFLAGS_FOR_BUILD
CXXFLAGS_FOR_BUILD:=-g -O2
endif
ifndef FCFLAGS_FOR_BUILD
FCFLAGS_FOR_BUILD:=-g -O2
endif
export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTFC HOSTLD


ifeq ($(BR2_HAVE_DOT_CONFIG),y)

# cc-option
# Usage: cflags-y+=$(call cc-option, -march=winchip-c6, -march=i586)
# sets -march=winchip-c6 if supported else falls back to -march=i586
# without checking the latter.
cc-option=$(shell if $(TARGET_CC) $(TARGET_CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
	> /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)

#############################################################
#
# Hide troublesome environment variables from sub processes
#
#############################################################
unexport CROSS_COMPILE
unexport ARCH

#############################################################
#
# Setup the proper filename extensions for the host
#
##############################################################
ifneq ($(findstring linux,$(BR2_GNU_BUILD_SUFFIX)),)
HOST_EXEEXT:=
HOST_LIBEXT:=.a
HOST_SHREXT:=.so
endif
ifneq ($(findstring apple,$(BR2_GNU_BUILD_SUFFIX)),)
HOST_EXEEXT:=
HOST_LIBEXT:=.a
HOST_SHREXT:=.dylib
endif
ifneq ($(findstring cygwin,$(BR2_GNU_BUILD_SUFFIX)),)
HOST_EXEEXT:=.exe
HOST_LIBEXT:=.lib
HOST_SHREXT:=.dll
endif
ifneq ($(findstring mingw,$(BR2_GNU_BUILD_SUFFIX)),)
HOST_EXEEXT:=.exe
HOST_LIBEXT:=.lib
HOST_SHREXT:=.dll
endif

# The preferred type of libs we build for the target
ifeq ($(BR_PREFER_STATIC_LIB),y)
LIBTGTEXT=.a
#PREFERRED_LIB_FLAGS:=--disable-shared --enable-static
else
LIBTGTEXT=.so
#PREFERRED_LIB_FLAGS:=--disable-static --enable-shared
endif
PREFERRED_LIB_FLAGS:=--enable-static --enable-shared

##############################################################
#
# The list of stuff to build for the target toolchain
# along with the packages to build for the target.
#
##############################################################
TARGETS:=
BR2_DEPENDS_DIR=$(PROJECT_BUILD_DIR)/buildroot-config


#############################################################
#
# You should probably leave this stuff alone unless you know
# what you are doing.
#
#############################################################

all: world

# In this section, we need .config
include .config.cmd

# We also need the various per-package makefiles, which also add
# each selected package to TARGETS if that package was selected
# in the .config file.
include package/*/*.mk

# Trick to ensure initramfs and kernel will be generated last
TARGETS += initramfs linux

TARGETS_CLEAN:=$(patsubst %,%-clean,$(TARGETS))
TARGETS_PROPER:=$(patsubst %,%-mrproper,$(TARGETS))
TARGETS_SOURCE:=$(patsubst %,%-source,$(TARGETS) $(BASE_TARGETS))
TARGETS_DIRCLEAN:=$(patsubst %,%-dirclean,$(TARGETS))
TARGETS_ALL:=$(patsubst %,__real_tgt_%,$(TARGETS))
# all targets depend on the crosscompiler and it's prerequisites
$(TARGETS_ALL): __real_tgt_%: $(BASE_TARGETS) %

# ensure that devkit and libraries will be compiled first
BASE_TARGETS += devkit spidlib

$(BR2_DEPENDS_DIR): .config
	rm -rf $@
	mkdir -p $(@D)
	cp -dpRf $(CONFIG)/buildroot-config $@

autoconf:
	@if [ ! -f $(INCLUDE_DIR)/autoconf.h ]; then \
		ln -s $(LINUX_DIR)/include/linux/autoconf.h $(INCLUDE_DIR)/autoconf.h; \
	fi

world: autoconf $(BASE_TARGETS) $(TARGETS_ALL)

.PHONY: all world dirs clean dirclean source \
	$(BASE_TARGETS) $(TARGETS) $(TARGETS_ALL) \
	$(TARGETS_CLEAN) $(TARGETS_DIRCLEAN) $(TARGETS_SOURCE) \
	$(BR2_DEPENDS_DIR)

#############################################################
#
# staging and target directories do NOT list these as
# dependencies anywhere else
#
#############################################################
$(STAGING_DIR):
	@mkdir -p $(STAGING_DIR)/bin
	@mkdir -p $(STAGING_DIR)/lib
ifeq ($(BR2_TOOLCHAIN_SYSROOT),y)
	@mkdir -p $(STAGING_DIR)/usr/lib
else
ifneq ($(BR2_TOOLCHAIN_EXTERNAL),y)
	@ln -snf . $(STAGING_DIR)/usr
	@mkdir -p $(STAGING_DIR)/usr/$(REAL_GNU_TARGET_NAME)
	@ln -snf ../lib $(STAGING_DIR)/usr/lib
	@ln -snf ../lib $(STAGING_DIR)/usr/$(REAL_GNU_TARGET_NAME)/lib
endif
endif
	@mkdir -p $(STAGING_DIR)/usr/include

source: $(TARGETS_SOURCE) $(HOST_SOURCE)

_source-check:
	$(MAKE) SPIDER=--spider source

external-deps:
	@$(MAKE) -Bs BR_WGET=$(TOPDIR)toolchain/wget-show-external-deps.sh \
	source


#############################################################
#
# Cleanup and misc junk
#
#############################################################
clean: $(TARGETS_CLEAN)
	rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE)

dirclean: $(TARGETS_DIRCLEAN)
	rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE)

mrproper: $(TARGETS_PROPER)
	rm -rf $(STAGING_DIR) $(TARGET_DIR) $(IMAGE)
	find . -name "*~" -exec rm {} +
	rm -f .config

else # ifeq ($(BR2_HAVE_DOT_CONFIG),y)

all: menuconfig

# configuration
# ---------------------------------------------------------------------------

HOSTCFLAGS=$(CFLAGS_FOR_BUILD)
export HOSTCFLAGS

$(CONFIG)/conf:
	@mkdir -p $(CONFIG)/buildroot-config
	$(MAKE) CC="$(HOSTCC)" -C $(CONFIG) conf
	-@if [ ! -f .config ]; then \
		cp $(CONFIG_DEFCONFIG) .config; \
	fi
$(CONFIG)/mconf:
	@mkdir -p $(CONFIG)/buildroot-config
	$(MAKE) CC="$(HOSTCC)" -C $(CONFIG) conf mconf
	-@if [ ! -f .config ]; then \
		cp $(CONFIG_DEFCONFIG) .config; \
	fi

menuconfig: $(CONFIG)/mconf
	@mkdir -p $(CONFIG)/buildroot-config
	@if ! KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/mconf $(CONFIG_CONFIG_IN); then \
		test -f .config.cmd || rm -f .config; \
	fi
#	Something to change here ?
	@if ! [ -e $(LINUX_DIR)/.config ]; then $(MAKE) linux-config; fi
	@if ! [ -e $(BUSYBOX_DIR)/.config ]; then $(MAKE) busybox-config; fi

config: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf $(CONFIG_CONFIG_IN)

oldconfig: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -o $(CONFIG_CONFIG_IN)

randconfig: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -r $(CONFIG_CONFIG_IN)

allyesconfig: $(CONFIG)/conf
	cat $(CONFIG_DEFCONFIG) > .config
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -y $(CONFIG_CONFIG_IN)
#	sed -i -e "s/^CONFIG_DEBUG.*/# CONFIG_DEBUG is not set/" .config

allnoconfig: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -n $(CONFIG_CONFIG_IN)

defconfig: $(CONFIG)/conf
	@mkdir -p $(CONFIG)/buildroot-config
	@KCONFIG_AUTOCONFIG=$(CONFIG)/buildroot-config/auto.conf \
		KCONFIG_AUTOHEADER=$(CONFIG)/buildroot-config/autoconf.h \
		$(CONFIG)/conf -d $(CONFIG_CONFIG_IN)

# check if download URLs are outdated
source-check: allyesconfig
	$(MAKE) _source-check

#############################################################
#
# Cleanup and misc junk
#
#############################################################
clean:
	rm -f .config .config.old .config.cmd .tmpconfig.h .defconfig
	-$(MAKE) -C $(CONFIG) clean

mrproper:
	rm -f .config .config.old .config.cmd .tmpconfig.h .defconfig
	-$(MAKE) -C $(CONFIG) clean

endif # ifeq ($(BR2_HAVE_DOT_CONFIG),y)

ppc_spc200c_defconfig:
	cp $@ .config
	cp $@ .defconfig
	$(MAKE) defconfig

ppc_spc200e_defconfig:
	cp $@ .config
	cp $@ .defconfig
	$(MAKE) defconfig

all_spc200c_defconfig:
	cp $@ .config
	cp $@ .defconfig
	$(MAKE) defconfig

all_spc200e_defconfig:
	cp $@ .config
	cp $@ .defconfig
	$(MAKE) defconfig

slave_spc200c_defconfig:
	cp $@ .config
	cp $@ .defconfig
	$(MAKE) defconfig

slave_spc200e_defconfig:
	cp $@ .config
	cp $@ .defconfig
	$(MAKE) defconfig

.PHONY: all_spc200c_defconfig all_spc200e_defconfig \
	slave_spc200c_defconfig slave_spc200e_defconfig \
    ppc_spc200c_defconfig ppc_spc200e_defconfig

ifneq ($(HG_DIR),)
VERSION_TAG:=$(shell hg identify -t)
BUNDLE_DIR:=../SPiDBundle-$(VERSION_TAG)

bundle:
	rm -rf $(BUNDLE_DIR)
	hg archive $(BUNDLE_DIR)
	rm $(BUNDLE_DIR)/.hg*
	rm -rf $(BUNDLE_DIR)/devkit
	rm -rf $(BUNDLE_DIR)/toolkit
	rm -rf $(BUNDLE_DIR)/ppc_spc200c_defconfig
	rm -rf $(BUNDLE_DIR)/ppc_spc200e_defconfig
	mkdir -p $(BUNDLE_DIR)/binaries
	mkdir -p $(BUNDLE_DIR)/include/plc-drv
	make -C $(PLC_DIR) clean plc_drv-headers
	cp -u $(INCLUDE_DIR)/plc-drv/plc_sysctl.h $(BUNDLE_DIR)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/plc_ioctl.h $(BUNDLE_DIR)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/plc_drv_if.h $(BUNDLE_DIR)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/ioctl-interface.h $(BUNDLE_DIR)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/pmd.h $(BUNDLE_DIR)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/version.h $(BUNDLE_DIR)/include/plc-drv/
	make mrproper
	make slave_spc200e_defconfig
	make devkit
	make mrproper
	make all_spc200e_defconfig
	make devkit
	make mrproper
	make slave_spc200c_defconfig
	make devkit
	make mrproper
	make all_spc200c_defconfig
	make devkit
	cp $(BINARIES_DIR)/* $(BUNDLE_DIR)/binaries
	tar -cf $(BUNDLE_DIR).tar $(BUNDLE_DIR)
	bzip2 $(BUNDLE_DIR).tar

endif # ifneq ($(HG_DIR),)

allimages:
	make mrproper
	make slave_spc200e_defconfig
	make
	make mrproper
	make all_spc200e_defconfig
	make
	make mrproper
	make slave_spc200c_defconfig
	make
	make mrproper
	make all_spc200c_defconfig
	make

BUNDLE_DIR_PPC:=../SPiDBundle-PPC-$(VERSION_TAG)

ppcbundle:
	rm -rf $(BUNDLE_DIR_PPC)
	hg archive $(BUNDLE_DIR_PPC)
	rm $(BUNDLE_DIR_PPC)/.hg*
	rm -rf $(BUNDLE_DIR_PPC)/devkit
	rm -rf $(BUNDLE_DIR_PPC)/toolkit
	rm -rf $(BUNDLE_DIR_PPC)/slave_spc200e_defconfig
	rm -rf $(BUNDLE_DIR_PPC)/all_spc200e_defconfig
	rm -rf $(BUNDLE_DIR_PPC)/slave_spc200c_defconfig
	rm -rf $(BUNDLE_DIR_PPC)/all_spc200c_defconfig
	mkdir -p $(BUNDLE_DIR_PPC)/binaries
	mkdir -p $(BUNDLE_DIR_PPC)/include/plc-drv
	make -C $(PLC_DIR) clean plc_drv-headers
	cp -u $(INCLUDE_DIR)/plc-drv/plc_sysctl.h $(BUNDLE_DIR_PPC)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/plc_ioctl.h $(BUNDLE_DIR_PPC)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/plc_drv_if.h $(BUNDLE_DIR_PPC)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/ioctl-interface.h $(BUNDLE_DIR_PPC)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/pmd.h $(BUNDLE_DIR_PPC)/include/plc-drv
	cp -u $(INCLUDE_DIR)/plc-drv/version.h $(BUNDLE_DIR_PPC)/include/plc-drv/
	make mrproper
	make ppc_spc200e_defconfig
	make devkit
	make mrproper
	make ppc_spc200c_defconfig
	make devkit
	cp $(BINARIES_DIR)/* $(BUNDLE_DIR_PPC)/binaries
	tar -cf $(BUNDLE_DIR_PPC).tar $(BUNDLE_DIR_PPC)
	bzip2 $(BUNDLE_DIR_PPC).tar

ppcimages:
	make mrproper
	make ppc_spc200e_defconfig
	make
	make mrproper
	make ppc_spc200c_defconfig
	make

help:
	@echo 'Cleaning:'
	@echo '  clean                  - delete temporary files created by build'
	@echo '  mrproper               - delete all non-source files (including .config)'
	@echo
	@echo 'Build:'
	@echo '  all                    - make world'
	@echo
	@echo 'Configuration:'
	@echo '  menuconfig             - interactive curses-based configurator'
	@echo '  oldconfig              - resolve any unresolved symbols in .config'
	@echo

.PHONY: dummy subdirs release clean config oldconfig \
	menuconfig tags check test depend defconfig help