MAKE_ENV=PATH=$(TARGET_PATH) $(FREETZ_LD_RUN_PATH)

BUILD_FAIL_MSG:= Build failed.
ifneq ($(strip $(FREETZ_VERBOSITY_LEVEL)),2)
BUILD_FAIL_MSG += Please re-run make with verbose level set to 2 to see what's going on.
endif

SUBMAKE1=cmd() { $(MAKE_ENV) $(MAKE1) $(QUIET) "$$@" $(SILENT) || { $(call ERROR,1,$(BUILD_FAIL_MSG)) } }; $(call _ECHO_BUILD) cmd
SUBMAKE=cmd() { $(MAKE_ENV) $(MAKE) $(QUIET) "$$@" $(SILENT) || { $(call ERROR,1,$(BUILD_FAIL_MSG)) } }; $(call _ECHO_BUILD) cmd
CONFIGURE=conf_cmd() { ./configure $(QUIET) "$$$$@" $(SILENT) || { $(call ERROR,1,$(BUILD_FAIL_MSG)) } };
AUTORECONF=autoreconf -f -i || { $(call ERROR,1,autoreconf failed) };

HOSTCC:=gcc
HOST_STRIP:=strip --strip-all -R .note -R .comment

HOST_ARCH:=$(shell $(HOSTCC) -dumpmachine | sed -e s'/-.*//' \
	-e 's/sparc.*/sparc/' \
	-e 's/arm.*/arm/g' \
	-e 's/m68k.*/m68k/' \
	-e 's/ppc/powerpc/g' \
	-e 's/v850.*/v850/g' \
	-e 's/sh[234]/sh/' \
	-e 's/mips-.*/mips/' \
	-e 's/mipsel-.*/mipsel/' \
	-e 's/cris.*/cris/' \
	-e 's/i[3-9]86/i386/' \
	)
GNU_HOST_NAME:=$(HOST_ARCH)-pc-linux-gnu

ifeq ($(strip $(FREETZ_TARGET_NLS)),y)
DISABLE_NLS:=
else
DISABLE_NLS:=--disable-nls
endif

TARGET_CROSS:=$(call qstrip,$(FREETZ_TARGET_CROSS))
KERNEL_CROSS:=$(call qstrip,$(FREETZ_KERNEL_CROSS))

TARGET_CFLAGS_HW_CAPABILITIES :=
ifeq ($(strip $(FREETZ_TARGET_ARCH_ARM)),y)
TARGET_CFLAGS_HW_CAPABILITIES += $(if $(call qstrip,$(FREETZ_GCC_CPU)),-mcpu=$(call qstrip,$(FREETZ_GCC_CPU)))
else
TARGET_CFLAGS_HW_CAPABILITIES += $(if $(call qstrip,$(FREETZ_GCC_CPU)),-march=$(call qstrip,$(FREETZ_GCC_CPU)))
TARGET_CFLAGS_HW_CAPABILITIES += $(if $(call qstrip,$(FREETZ_GCC_CPU)),-mtune=$(call qstrip,$(FREETZ_GCC_CPU)))
endif
TARGET_CFLAGS_HW_CAPABILITIES += $(if $(call qstrip,$(FREETZ_GCC_FPU)),-mfpu=$(call qstrip,$(FREETZ_GCC_FPU)))
ifeq ($(strip $(FREETZ_TARGET_ARCH_ARM)),y)
# ARM is the only ARCH using -mfloat-abi=%
TARGET_CFLAGS_HW_CAPABILITIES += $(if $(call qstrip,$(FREETZ_GCC_FLOAT_ABI)),-mfloat-abi=$(call qstrip,$(FREETZ_GCC_FLOAT_ABI)))
else
# all other ARCHs use -m%-float
TARGET_CFLAGS_HW_CAPABILITIES += $(if $(call qstrip,$(FREETZ_GCC_FLOAT_ABI)),-m$(call qstrip,$(FREETZ_GCC_FLOAT_ABI))-float)
endif
TARGET_CFLAGS_HW_CAPABILITIES += $(if $(call qstrip,$(FREETZ_GCC_MODE)),-m$(call qstrip,$(FREETZ_GCC_MODE)))

# additional Freetz controlled and $(FREETZ_TARGET_ARCH) dependent flags
TARGET_CFLAGS_arm:=
TARGET_CFLAGS_i686:=
TARGET_CFLAGS_mips:=-Wa,--trap

# LFS flags
TARGET_CFLAGS_LFS:=-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64

ifneq ($(filter -march=% -mcpu=% -mtune=% -mfpu=% -mfloat-abi=% -m%-float -Wa$(_comma)--trap,$(call qstrip,$(FREETZ_TARGET_CFLAGS))),)
$(error Please remove any ARCH/CPU/FPU/FLOAT-ABI/MODE related flags (-march/-mcpu/-mtune/-mfpu/-mfloat-abi/-m*-float/-Wa$(_comma)--trap) \
	from target compiler flags (FREETZ_TARGET_CFLAGS variable in your .config). \
	These flags are automatically set by Freetz build environment now)
endif
TARGET_CFLAGS:=$(strip $(TARGET_CFLAGS_HW_CAPABILITIES) $(call qstrip,$(FREETZ_TARGET_CFLAGS)) $(TARGET_CFLAGS_$(call qstrip,$(FREETZ_TARGET_ARCH))) $(TARGET_CFLAGS_LFS))

FPIC:=-fPIC

TARGET_SPECIFIC_SUBDIR:=target-$(TARGET_TOOLCHAIN_COMPILER)
SOURCE_DIR:=$(SOURCE_DIR_ROOT)/$(TARGET_SPECIFIC_SUBDIR)
PACKAGES_DIR:=$(PACKAGES_DIR_ROOT)/$(TARGET_SPECIFIC_SUBDIR)
TARGET_SPECIFIC_ROOT_DIR:=$(PACKAGES_DIR)/root

$(SOURCE_DIR) \
$(PACKAGES_DIR):
	@mkdir -p $@

# If CONFIG_SITE is exported, it can cause errors in the host builds
unexport CONFIG_SITE
CONFIG_SITE:=$(FREETZ_BASE_DIR)/$(INCLUDE_DIR)/config.site/$(call qstrip,$(FREETZ_TARGET_UCLIBC_TRIPLET))

TARGET_AR:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)ar
TARGET_AS:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)as
TARGET_CC:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)gcc
TARGET_CXX:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)g++-wrapper
TARGET_LD:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)ld
TARGET_LDCONFIG:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)ldconfig
TARGET_NM:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)nm
TARGET_RANLIB:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)ranlib
TARGET_READELF:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)readelf
TARGET_STRIP:=$(TARGET_MAKE_PATH)/$(TARGET_CROSS)strip --remove-section={.comment,.note,.pdr}

# Don't use TARGET_TOOLCHAIN_PATH here because it's not set
TARGET_PATH="$(TARGET_MAKE_PATH):$(KERNEL_MAKE_PATH):$(PATH)"

# s. uclibc-${version}/ldso/ldso/dl-elf.c::_dl_load_shared_library
STANDARD_LIBRARY_DIRS:=/lib /usr/lib

FREETZ_RPATH_SPACE_SEPARATED:=$(patsubst %/,%,$(subst :,$(_space),$(call qstrip,$(FREETZ_RPATH))))
FREETZ_RPATH:=$(subst $(_space),:,$(FREETZ_RPATH_SPACE_SEPARATED))

ifneq (,$(if $(MAKECMDGOALS),$(filter-out $(KCONFIG_TARGETS),$(MAKECMDGOALS)),do-validate-FREETZ_RPATH))
# check if FREETZ_RPATH contains a valid value
ifneq (1,$(words $(FREETZ_RPATH)))
$(error FREETZ_RPATH (="$(FREETZ_RPATH)") must not be empty and must not contain spaces)
endif
$(foreach entry,$(FREETZ_RPATH_SPACE_SEPARATED), \
$(if $(filter /%,$(entry)),,$(error FREETZ_RPATH (="$(FREETZ_RPATH)" contains invalid entry "$(entry)", each entry must be an absolute path))) \
)
ifneq (,$(filter     $(STANDARD_LIBRARY_DIRS),$(FREETZ_RPATH_SPACE_SEPARATED)))
ifneq (,$(filter-out $(STANDARD_LIBRARY_DIRS),$(FREETZ_RPATH_SPACE_SEPARATED)))
$(error FREETZ_RPATH (="$(FREETZ_RPATH)") contains both standard and non-standard search paths. This is NOT supported)
endif
endif
ifeq (,$(filter-out $(STANDARD_LIBRARY_DIRS),$(FREETZ_RPATH_SPACE_SEPARATED)))
$(info )
$(warning FREETZ_RPATH (="$(FREETZ_RPATH)") contains only standard search paths. The only use-case for such a configuration (and this is the only reason we support it) is to create binaries using the Freetz toolchain and run them on a non-freetz'ed box.)
$(info )
endif
endif

FREETZ_LIBRARY_DIR:=$(firstword $(FREETZ_RPATH_SPACE_SEPARATED))
FREETZ_LD_RUN_PATH:=$(if $(filter-out $(STANDARD_LIBRARY_DIRS),$(FREETZ_RPATH_SPACE_SEPARATED)),LD_RUN_PATH="$(FREETZ_RPATH)")
MAKE_ENV+=FREETZ_LIBRARY_DIR="$(FREETZ_LIBRARY_DIR)"

# commands to run before calling configure
# each command has to be terminated by ';'
TARGET_CONFIGURE_PRE_CMDS:=
TARGET_CONFIGURE_PRE_CMDS += $(RM) config.{cache,status};

# setup environment for configure
TARGET_CONFIGURE_ENV:=
TARGET_CONFIGURE_ENV += PATH=$(TARGET_PATH)
TARGET_CONFIGURE_ENV += FREETZ_LIBRARY_DIR="$(FREETZ_LIBRARY_DIR)"
TARGET_CONFIGURE_ENV += FREETZ_KERNEL_VERSION_MAJOR="$(call qstrip,$(FREETZ_KERNEL_VERSION_MAJOR))"
TARGET_CONFIGURE_ENV += FREETZ_TARGET_ARCH="$(call qstrip,$(FREETZ_TARGET_ARCH))"
TARGET_CONFIGURE_ENV += FREETZ_TARGET_ARCH_ENDIANNESS_DEPENDENT="$(call qstrip,$(FREETZ_TARGET_ARCH_ENDIANNESS_DEPENDENT))"

# Set compiler/linker flags here, not in TARGET_CONFIGURE_OPTIONS,
# because this way they do not disturb old configure scripts
TARGET_CONFIGURE_ENV += CC="$(TARGET_CC)"
TARGET_CONFIGURE_ENV += CXX="$(TARGET_CXX)"
TARGET_CONFIGURE_ENV += CFLAGS="$(TARGET_CFLAGS)"
TARGET_CONFIGURE_ENV += CXXFLAGS="$(TARGET_CFLAGS)"
TARGET_CONFIGURE_ENV += LDFLAGS=""
TARGET_CONFIGURE_ENV += PKG_CONFIG_PATH="$(TARGET_MAKE_PATH)/../lib/pkgconfig"
TARGET_CONFIGURE_ENV += PKG_CONFIG_LIBDIR="$(TARGET_MAKE_PATH)/../lib/pkgconfig"

CONFIG_CACHE_PATH := $(FREETZ_BASE_DIR)/$(SOURCE_DIR)/config.cache
CONFIG_CACHE_BACKUP_DIR := $(FREETZ_BASE_DIR)/$(SOURCE_DIR)/_config.cache-backup
# $1 optional suffix
define BACKUP_CONFIG_CACHE
if [ -e $(CONFIG_CACHE_PATH) ]; then mkdir -p $(CONFIG_CACHE_BACKUP_DIR); cp -a $(CONFIG_CACHE_PATH) $(CONFIG_CACHE_BACKUP_DIR)/config.cache-`date +%Y%m%d-%H%M%S`$(if $1,-$1,); fi;
endef

# Common options for configure
TARGET_CONFIGURE_OPTIONS:=
#TARGET_CONFIGURE_OPTIONS += --cache-file=$(CONFIG_CACHE_PATH)
TARGET_CONFIGURE_OPTIONS += --cache-file=/dev/null
TARGET_CONFIGURE_OPTIONS += --target=$(GNU_TARGET_NAME)
TARGET_CONFIGURE_OPTIONS += --host=$(GNU_TARGET_NAME)
TARGET_CONFIGURE_OPTIONS += --build=$(GNU_HOST_NAME)
TARGET_CONFIGURE_OPTIONS += --program-prefix=""
TARGET_CONFIGURE_OPTIONS += --program-suffix=""
TARGET_CONFIGURE_OPTIONS += --prefix=/usr
TARGET_CONFIGURE_OPTIONS += --exec-prefix=/usr
TARGET_CONFIGURE_OPTIONS += --bindir=/usr/bin
TARGET_CONFIGURE_OPTIONS += --datadir=/usr/share
TARGET_CONFIGURE_OPTIONS += --includedir=/usr/include
TARGET_CONFIGURE_OPTIONS += --infodir=/usr/share/info
TARGET_CONFIGURE_OPTIONS += --libdir=/usr/lib
TARGET_CONFIGURE_OPTIONS += --libexecdir=/usr/lib
TARGET_CONFIGURE_OPTIONS += --localstatedir=/var
TARGET_CONFIGURE_OPTIONS += --mandir=/usr/share/man
TARGET_CONFIGURE_OPTIONS += --sbindir=/usr/sbin
TARGET_CONFIGURE_OPTIONS += --sysconfdir=/etc
TARGET_CONFIGURE_OPTIONS += --with-gnu-ld
TARGET_CONFIGURE_OPTIONS += $(DISABLE_NLS)

DL_SITE:=$(call qstrip,$(FREETZ_DL_SITE))
DL_SOURCE:=$(call qstrip,$(FREETZ_DL_SOURCE))
DL_SOURCE_MD5:=$(call qstrip,$(FREETZ_DL_SOURCE_MD5))
export DL_SOURCE_ID=$(shell echo $(DL_SOURCE) | tools/imagename2id)

ifneq ($(strip $(FREETZ_DL_SOURCE_CONTAINER)),)
DL_SOURCE_CONTAINER:=$(call qstrip,$(FREETZ_DL_SOURCE_CONTAINER))
DL_SOURCE_CONTAINER_MD5:=$(call qstrip,$(FREETZ_DL_SOURCE_CONTAINER_MD5))
DL_SOURCE_CONTAINER_SUFFIX:=$(suffix $(DL_SOURCE_CONTAINER))
endif

ifneq ($(strip $(FREETZ_DL_SOURCE2)),)
DL_SITE2:=$(call qstrip,$(FREETZ_DL_SITE2))
DL_SOURCE2:=$(call qstrip,$(FREETZ_DL_SOURCE2))
DL_SOURCE2_MD5:=$(call qstrip,$(FREETZ_DL_SOURCE2_MD5))
endif

ifneq ($(strip $(FREETZ_DL_SOURCE2_CONTAINER)),)
DL_SOURCE2_CONTAINER:=$(call qstrip,$(FREETZ_DL_SOURCE2_CONTAINER))
DL_SOURCE2_CONTAINER_MD5:=$(call qstrip,$(FREETZ_DL_SOURCE2_CONTAINER_MD5))
DL_SOURCE2_CONTAINER_SUFFIX:=$(suffix $(DL_SOURCE2_CONTAINER))
endif

ifneq ($(strip $(FREETZ_DL_SOURCE3)),)
DL_SITE3:=$(call qstrip,$(FREETZ_DL_SITE3))
DL_SOURCE3:=$(call qstrip,$(FREETZ_DL_SOURCE3))
DL_SOURCE3_MD5:=$(call qstrip,$(FREETZ_DL_SOURCE3_MD5))
endif

ifneq ($(strip $(FREETZ_DL_SOURCE3_CONTAINER)),)
DL_SOURCE3_CONTAINER:=$(call qstrip,$(FREETZ_DL_SOURCE3_CONTAINER))
DL_SOURCE3_CONTAINER_MD5:=$(call qstrip,$(FREETZ_DL_SOURCE3_CONTAINER_MD5))
DL_SOURCE3_CONTAINER_SUFFIX:=$(suffix $(DL_SOURCE3_CONTAINER))
endif

### Convenience macros
# Since the makefiles for the packages contain many similar parts, we define some macros to simplify
# the creation and maintenance of the makefiles.
# macro names containing _INT are for internal use only and should not be called outside of this file
# For details of the required targets, see the documentation in README.Makefiles

define SELECTED_SUBOPTIONS__INT
$(strip \
	$(foreach suboption, $(1), \
		$(if \
			$(or \
				$(FREETZ_$(3)_$(if $(2),$(2)_,)$(call LEGAL_VARNAME,$(suboption))), \
				$(FREETZ_$(3)_$(if $(2),$(2)_,)$(call TOUPPER_NAME,$(suboption))) \
			), \
			$(suboption) \
		) \
	) \
)
endef
# For each SUFFIX from a given list of menuconfig-option-suffixes evaluates FREETZ_PACKAGE_$(PKG)_$(OPTIONAL_INFIX)_$(SUFFIX) variable
# and in case it evaluates to non-empty value (i.e. selected) appends the suffix to the list being returned.
# $(1) - list of package suboptions (suffixes) to be evaluated
# $(2) - optional infix
PKG_SELECTED_SUBOPTIONS = $(call SELECTED_SUBOPTIONS__INT,$(1),$(2),PACKAGE_$(PKG))
# For each SUFFIX from a given list of menuconfig-option-suffixes evaluates FREETZ_LIB_lib$(pkg)_$(OPTIONAL_INFIX)_$(SUFFIX) variable
# and in case it evaluates to non-empty value (i.e. selected) appends the suffix to the list being returned.
# $(1) - list of package suboptions (suffixes) to be evaluated
# $(2) - optional infix
LIB_SELECTED_SUBOPTIONS = $(call SELECTED_SUBOPTIONS__INT,$(1),$(2),LIB_lib$(patsubst lib%,%,$(pkg)))

# SED helper macros
# single quote sign within sed script quoted with single quote sign
_SQ:='"'"'
# double quote sign within sed script quoted with double quote sign
_DQ:="'"'"

# PKG_EDIT_CONFIG
# update a config file
#   $(1) = list of assignments CONFIG_VAR=value
PKG_EDIT_CONFIG__INT0 = -e 's%^(\# )?($1)[ =].*%$(if $(patsubst n,,$2),\2=$2,\# \2 is not set)%g'
PKG_EDIT_CONFIG__INT1 = $(call PKG_EDIT_CONFIG__INT0,$(word 1,$(subst =, ,$1)),$(word 2,$(subst =, ,$1)))
PKG_EDIT_CONFIG = $(SED) -i -r $(foreach asg,$1,$(call PKG_EDIT_CONFIG__INT1,$(asg)))

# PKG_FIX_LIBTOOL_LA
#   fix directories is libtool .la files and .pc files
PKG_FIX_LIBTOOL_LA__INT = -e "s,^($1=)(['$(_DQ)]?)([^'$(_DQ)]*)(\2)$$,\1\2$(TARGET_TOOLCHAIN_STAGING_DIR)\3\4,g"
PKG_FIX_LIBTOOL_LA__INT_DEPENDENCY_LIBS = -e "/^dependency_libs/s,[ \t],  ,g;s,([ '])((/usr)?/lib/[^ /]+[.]la)([ ']),\1$(TARGET_TOOLCHAIN_STAGING_DIR)\2\4,g;s, +, ,g"
PKG_FIX_LIBTOOL_LA = $(SED) -i -r \
	$(foreach key,$(if $(strip $1),$(strip $1),libdir includedir prefix exec_prefix),$(call PKG_FIX_LIBTOOL_LA__INT,$(key))) \
	$(if $(strip $1),,$(PKG_FIX_LIBTOOL_LA__INT_DEPENDENCY_LIBS))

# Fix configure and/or libtool scripts to prevent RPATH from being hardcoded.
# Based on ideas provided on http://wiki.debian.org/RpathIssue.
#
# Whether RPATH has been hardcoded or not could be tested using the following command:
#   readelf -d <binary/library> | grep RPATH
#
# The macro is intended to be used in $(PKG)_CONFIGURE_PRE_CMDS variable in the following way:
# $(PKG)_CONFIGURE_PRE_CMDS += $(call PKG_PREVENT_RPATH_HARDCODING,./configure)
#
# Replace runpath_var=$runpath_var with runpath_var=
PKG_FIX_RUNPATH_VAR__INT = -e "s|(runpath_var=)[$$$$]runpath_var|\1|g"
#
# Replace hardcode_into_libs=something with hardcode_into_libs=no
PKG_FIX_HARDCODE_INTO_LIBS__INT = -e "s|(hardcode_into_libs=).+$$$$|\1no|g"
#
# In all lines matching the pattern hardcode_libdir_flag_spec[_A-Za-z0-9]*=
# replace
#   ${wl}-rpath,$libdir
#   ${wl}--rpath,$libdir
#   ${wl}-rpath ${wl}$libdir
#   ${wl}--rpath ${wl}$libdir
# with
#   -D__SOMETHING_NON_EMPTY_TO_FOOL_LIBTOOL__
PKG_FIX_HARDCODE_LIBDIR_FLAG_SPEC__INT1 = -e '/hardcode_libdir_flag_spec[_A-Za-z0-9]*=/s/[$$$$][{]wl[}]-?-rpath(,| [$$$$][{]wl[}])[$$$$]libdir/-D__SOMETHING_NON_EMPTY_TO_FOOL_LIBTOOL__/g'
# Replace
#   hardcode_libdir_flag_spec(_ld)?=$lt_hardcode_libdir_flag_spec...
#   or
#   hardcode_libdir_flag_spec(_ld)?=$lt_[]_LT_AC_TAGVAR(hardcode_libdir_flag_spec..., $1)
# with
#   hardcode_libdir_flag_spec(_ld)?=
PKG_FIX_HARDCODE_LIBDIR_FLAG_SPEC__INT2 = -e 's/(hardcode_libdir_flag_spec(_ld)?=)[$$$$]lt_([[][]]_LT_AC_TAGVAR[(])?hardcode_libdir_flag_spec[_A-Za-z0-9]*(, *[$$$$]1[)])?/\1/g'
#
PKG_PREVENT_RPATH_HARDCODING__INT = \
	cp -a $1 $1.before_rpath_fix; \
	$(SED) -i -r \
		$(PKG_FIX_RUNPATH_VAR__INT) \
		$(PKG_FIX_HARDCODE_INTO_LIBS__INT) \
		$(PKG_FIX_HARDCODE_LIBDIR_FLAG_SPEC__INT1) \
		$(PKG_FIX_HARDCODE_LIBDIR_FLAG_SPEC__INT2) \
	$1;
PKG_PREVENT_RPATH_HARDCODING = $(foreach f,$1,$(call PKG_PREVENT_RPATH_HARDCODING__INT,$(f)))
# 1st level PKG_PREVENT_RPATH_HARDCODING
PKG_PREVENT_RPATH_HARDCODING1 = $(subst $$$$,$$,$(call PKG_PREVENT_RPATH_HARDCODING,$1))

# Changes a typical Makefile.in line from "FOO = @FOO@" to "FOO = @FOO@ $(EXTRA_FOO)", i.e. adds $(EXTRA_FOO) at the end
# $1 - variable name or variable names separated by |, i.e. regex OR pattern
# $2 - optional $($(PKG)_DIR) subdir
PKG_ADD_EXTRA_FLAGS = find $(abspath $($(PKG)_DIR))$(if $(strip $2),/$(strip $2)) -name Makefile.in -type f -exec $(SED) -i -r -e 's,^($(strip $1))[ \t]*=[ \t]*@\1@,& $$$$(EXTRA_\1),' \{\} \+;

# Change prefix of all $3_cv_* variables in $1 to $(pkg).
#  $1 is allowed to be a space separated list of variables or a ready to be used sed pattern
#  $2 (optional) is the file to be patched, default ./$($(PKG)_BUILD_SUBDIR)/configure
#  $3 (optional) is the prefix of the variables to rename, default ac
PKG_MAKE_AC_VARIABLES_PACKAGE_SPECIFIC = \
	$(SED) -i -r -e 's/$(if $(strip $3),$(strip $3),ac)(_cv(_('"$(shell echo "$(strip $1)" | tr " " "|")"')))/'"$(shell echo $(pkg) | tr '[\-\+]' '[_x]')"'\2/g' \
	$(if $(strip $2),$(strip $2),./$(if $(strip $($(PKG)_BUILD_SUBDIR)),$(strip $($(PKG)_BUILD_SUBDIR))/)configure);

# Usage:
# $(call REPLACE_LIBTOOL,$1,$2,$3)
# $1 - Relative path to libtool-script, usually ./ (NB: libtool is often generated by configure, i.e. doesn't exist in the tarball)
# $2 - Relative path to ltmain.sh, varies from package to package. The following locations are the most often used ones:
#      ./, ./build/, ./builds/unix/, ./auto/, ./autoconf/, ./conftools/
# $3 - Relative path to libtool.m4, varies from package to package. The following locations are the most often used ones:
#      ./, ./m4/, ./build/, ./conftools/
# Each parameter defaults to ./ if omitted
# NB: all libtool-related macros are heavily based on the openwrt macros provided in autotools.mk
define REPLACE_FILE_WITH_SYMLINK
if [ -f "$(abspath $($(PKG)_DIR)/$(3)/$(1))" -a -e "$(2)/$(if $(4),$(4),$(1))" ]; then \
	$(call MESSAGE, Replacing $(3)/$(if $(4),$(4),$(1)) with symlink to $(2)/$(if $(4),$(4),$(1))); \
	$(RM) "$(abspath $($(PKG)_DIR)/$(3)/$(1))"; \
	ln -s "$(2)/$(if $(4),$(4),$(1))" "$(abspath $($(PKG)_DIR)/$(3)/$(1))"; \
fi;
endef
define REPLACE_LIBTOOL__INT
$(call REPLACE_FILE_WITH_SYMLINK,libtool,$(TARGET_TOOLCHAIN_STAGING_DIR)/usr/bin,$(if $(1),$(1),.)) \
$(call REPLACE_FILE_WITH_SYMLINK,ltmain.sh,$(TARGET_TOOLCHAIN_STAGING_DIR)/usr/share/libtool,$(if $(2),$(2),.)) \
$(call REPLACE_FILE_WITH_SYMLINK,libtool.m4,$(TARGET_TOOLCHAIN_STAGING_DIR)/usr/share/aclocal,$(if $(3),$(3),.))
endef
define REPLACE_LIBTOOL__INT2
$(PKG)_CONFIGURE_PRE_CMDS += $(call REPLACE_LIBTOOL__INT,$(1),$(2),$(3))
$(PKG)_CONFIGURE_POST_CMDS += $(call REPLACE_LIBTOOL__INT,$(1),$(2),$(3))
endef
define REPLACE_LIBTOOL
$(eval $(call REPLACE_LIBTOOL__INT2,$(1),$(2),$(3)))
endef

define INSTALL_BINARY_STRIP
$(INSTALL_FILE) \
$(TARGET_STRIP) $@;
endef
define INSTALL_LIBRARY__INT
chmod 755 $<; \
mkdir -p $(dir $@); \
$(RM) $(addprefix $(dir $@),$(call LIBRARY_NAME_TO_SHELL_PATTERN,$(notdir $@),$(if $(1),-$(1)),$(2))); \
cp -a $(addprefix $(dir $<),$(call LIBRARY_NAME_TO_SHELL_PATTERN,$(notdir $<),$(1),$(2))) $(dir $@);
endef
INSTALL_LIBRARY = $(call INSTALL_LIBRARY__INT)
INSTALL_LIBRARY_INCLUDE_STATIC = $(call INSTALL_LIBRARY__INT,,a)
INSTALL_LIBRARY_WILDCARD_BEFORE_SO = $(call INSTALL_LIBRARY__INT,*)
INSTALL_LIBRARY_WILDCARD_BEFORE_SO_INCLUDE_STATIC = $(call INSTALL_LIBRARY__INT,*,a)
define INSTALL_LIBRARY_STRIP
$(INSTALL_LIBRARY) \
$(TARGET_STRIP) $@;
endef
define INSTALL_LIBRARY_STRIP_WILDCARD_BEFORE_SO
$(INSTALL_LIBRARY_WILDCARD_BEFORE_SO) \
$(TARGET_STRIP) $@;
endef

# $1 - binary to be installed
# $2 - directory binary to be installed in
# $3 (optional) - DESTDIR binary to be installed in, defaults to $(PKG)_DEST_DIR if omitted
define INSTALL_BINARY_STRIP_RULE
$(if $(strip $(3)),$(strip $(3)),$($(PKG)_DEST_DIR))$(strip $(2))/$(notdir $(strip $(1))): $(strip $(1))
	$(value INSTALL_BINARY_STRIP)
endef

# $1 - library to be installed
# $2 - directory library to be installed in
# $3 (optional) - DESTDIR library to be installed in, defaults to $(PKG)_DEST_DIR if omitted
define INSTALL_LIBRARY_STRIP_RULE
$(if $(strip $(3)),$(strip $(3)),$($(PKG)_DEST_DIR))$(strip $(2))/$(notdir $(strip $(1))): $(strip $(1))
	$(value INSTALL_LIBRARY_STRIP)
endef

define REMOVE_DOC_NLS_DIRS
$(if $(strip $(1)),$(RM) -r $(addprefix $(strip $(1)),$(foreach p,/ /usr /share /usr/share,$(foreach d,info man doc locale,$(subst //,/,$(p)/$(d))))))
endef

# We want build output like:
# "---> package/lynx: downloading... preparing... configuring... building... done."
# Actually there are two problems:
# 1. We can't use _ECHO_START in $(SUBMAKE) context.
# 2. Dot files are deleted within every package. But once at start would be enough.
# Usage:
# $(call _ECHO,text)
# $(call _ECHO_BUILD)
ECHO_ITEM_START:=$(SOURCE_DIR_ROOT)/.echo_item_start
ECHO_ITEM_BUILD:=$(SOURCE_DIR_ROOT)/.echo_item_build

define _ECHO_START
	echo -n "---> "; \
	case "$(PKG_TYPE)" in \
		BIN)	echo -n "package/$(pkg): " ;; \
		LIB)	echo -n "library/$(pkg): " ;; \
		TOOL)	echo -n "tool/$(pkg): " ;; \
		*)	echo -n "kernel: " ;; \
	esac; \
	$(RM) $(ECHO_ITEM_BUILD); \
	touch $(ECHO_ITEM_START);
endef

define _ECHO
	if [ ! -e $(ECHO_ITEM_START) ]; then \
		$(call _ECHO_START) \
	fi; \
	echo -n "$(1)";
endef

define _ECHO_BUILD
	if [ -e $(ECHO_ITEM_START) -a ! -e $(ECHO_ITEM_BUILD) ]; then \
		echo -n "building... "; \
		touch $(ECHO_ITEM_BUILD); \
	fi;
endef

define _ECHO_DONE
	if [ -e $(ECHO_ITEM_START) ]; then \
		echo "done."; \
	fi; \
	$(RM) $(ECHO_ITEM_START) $(ECHO_ITEM_BUILD);
endef

### PKG_INIT - initialise package. See also PKG_FINISH.

# Stage 1: initialise package names
#   $(1) = version (mandatory)
#   $(2) = lower-case package name (optional)
#   $(3) = upper-case package name (optional)
define PKG_INIT__INT
#PKG_MAKEFILE:=$(lastword $(MAKEFILE_LIST))
PKG_MAKEFILE:=$(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
PKG_BASENAME:=$(basename $(notdir $(PKG_MAKEFILE)))
$(if $(strip $1),,$(error Undefined version for PKG_INIT in $(PKG_MAKEFILE)))
pkg:=$(if $(strip $2),$(strip $2),$(PKG_BASENAME))
PKG:=$(if $(strip $3),$(strip $3),$(call TOUPPER_NAME,$(pkg)))
ALL_PACKAGES+=$(pkg)
#
$(PKG)_VERSION:=$(strip $1)
#
$(PKG)_BUILD_PREREQ:=
$(PKG)_BUILD_PREREQ_HINT:=
$(PKG)_DEPENDS_ON:=
$(PKG)_HOST_DEPENDS_ON:=
#
$(PKG)_REBUILD_SUBOPTS=FREETZ_RPATH
#
$(PKG)_SOURCE_DIR:=$(SOURCE_DIR)
$(PKG)_DIR:=$($(PKG)_SOURCE_DIR)/$(pkg)-$($(PKG)_VERSION)
#
$(PKG)_TARBALL_STRIP_COMPONENTS:=1
$(PKG)_TARBALL_INCLUDE_FILTER:=
#
$(PKG)_EXCLUDED:=
#
$(PKG)_CONFIGURE_DEFOPTS:=y
#
# $(pkg)-precompiled--int must be the first target, it will depend on DEPENDS_ON
$(pkg)-precompiled: $(pkg)-precompiled--int $(pkg)-clean-echo-item $(pkg)
$(pkg)-clean-echo-item:
	@$(RM) $(ECHO_ITEM_START) $(ECHO_ITEM_BUILD)
.PHONY: $(pkg)-clean-echo-item $(pkg)-precompiled $(pkg)-precompiled--int $(pkg)
endef

# Stage 2a: initialise other package-specific variables for binary packages
define PKG_INIT_BIN__INT
PKG_TYPE:=BIN
# level 99 for packages that are not actually started
$(PKG)_STARTLEVEL=99
$(PKG)_MAKE_DIR:=$(MAKE_DIR)/$(pkg)
$(PKG)_TARGET_DIR:=$(PACKAGES_DIR)/$(pkg)-$($(PKG)_VERSION)
$(PKG)_TARGET_LIBDIR:=$(TARGET_SPECIFIC_ROOT_DIR)$(FREETZ_LIBRARY_DIR)
$(PKG)_DEST_DIR:=$($(PKG)_TARGET_DIR)/root
$(PKG)_DEST_LIBDIR:=$($(PKG)_TARGET_DIR)/root$(FREETZ_LIBRARY_DIR)
$(PKG)_CLEAN_TARGET_DIR__INT:=$(RM) -r $($(PKG)_TARGET_DIR); $(RM) $(PACKAGES_DIR)/.$(pkg) $(PACKAGES_DIR)/.$(pkg)-$($(PKG)_VERSION);
$(pkg)-precompiled $(pkg): | $(PKG)_TARGET_DIR
endef

# Stage 2b: initialise other package-specific variables for library packages
define PKG_INIT_LIB__INT
PKG_TYPE:=LIB
$(PKG)_MAKE_DIR:=$(MAKE_DIR)/libs/$(pkg)
$(PKG)_TARGET_DIR:=$(TARGET_SPECIFIC_ROOT_DIR)$(FREETZ_LIBRARY_DIR)
$(PKG)_TARGET_LIBDIR:=$($(PKG)_TARGET_DIR)
$(PKG)_DEST_DIR:=$(TARGET_SPECIFIC_ROOT_DIR)
endef

# Stage 3: Common definitions after BIN/LIB specific definitions
define PKG_INIT__INT3
$(PKG)_DEST_BIN:=$($(PKG)_DEST_DIR)/bin
$(PKG)_DEST_SBIN:=$($(PKG)_DEST_DIR)/sbin
$(PKG)_DEST_LIB:=$($(PKG)_DEST_DIR)/lib
$(PKG)_DEST_USR_BIN:=$($(PKG)_DEST_DIR)/usr/bin
$(PKG)_DEST_USR_SBIN:=$($(PKG)_DEST_DIR)/usr/sbin
$(PKG)_DEST_USR_LIB:=$($(PKG)_DEST_DIR)/usr/lib
$(PKG)_CLEAN_STAGING_DIR__INT:=$(MAKE_ENV) $(MAKE) --quiet --ignore-errors $(pkg)-clean >/dev/null 2>&1;
endef

define PKG_INIT_BIN__INTV
$(value PKG_INIT__INT)
$(value PKG_INIT_BIN__INT)
$(value PKG_INIT__INT3)
endef
# Call & evaluate stages 1,2a,3 for binary packages
define PKG_INIT_BIN
$(eval $(call PKG_INIT_BIN__INTV,$1,$2,$3))
endef

define PKG_INIT_LIB__INTV
$(value PKG_INIT__INT)
$(value PKG_INIT_LIB__INT)
$(value PKG_INIT__INT3)
endef
# Call & evaluate stages 1,2b,3 for library packages
define PKG_INIT_LIB
$(eval $(call PKG_INIT_LIB__INTV,$1,$2,$3))
endef

# PKG_ADD_BIN
#  $1 PKG FREETZ_PACKAGE_ Config Symbol
#  $2 pkg Name (optional)
define PKG_ADD_BIN__INT
ifeq ($(FREETZ_PACKAGE_$1),y)
PACKAGES+=$(if $(strip $2),$2,$(pkg))
endif
endef
define PKG_ADD_BIN
$(eval $(call PKG_ADD_BIN__INT,$1,$2))
endef

# PKG_ADD_LIB
#  $1 PKG FREETZ_LIB_ Config Symbol
#  $2 pkg Name (optional)
define PKG_ADD_LIB__INT
ifeq ($(FREETZ_LIB_$1),y)
LIBS+=$(if $(strip $2),$2,$(pkg))
endif
endef
define PKG_ADD_LIB
$(eval $(call PKG_ADD_LIB__INT,$1,$2))
endef

### PKG_FINISH - package finalisation

# Finalise binary packages
define PKG_FINISH_BIN__INT
$(PKG)_TARGET_DIR:
	@mkdir -p $($(PKG)_TARGET_DIR)
.PHONY: $(PKG)_TARGET_DIR

# create marker containing package version
$(PACKAGES_DIR)/.$(pkg): | $(PACKAGES_DIR)
	@echo "$($(PKG)_VERSION)" > $$@

# copy files under make/$(pkg)/files to the package target dir
$(PACKAGES_DIR)/.$(pkg)-$($(PKG)_VERSION): | $(PACKAGES_DIR)
	mkdir -p $($(PKG)_TARGET_DIR)/root
	if test -d $($(PKG)_MAKE_DIR)/files; then \
		$(call COPY_USING_TAR,$($(PKG)_MAKE_DIR)/files,$($(PKG)_TARGET_DIR)) \
	fi
	@touch $$@

$(pkg) $(pkg)-precompiled: $(PACKAGES_DIR)/.$(pkg) $(PACKAGES_DIR)/.$(pkg)-$($(PKG)_VERSION)

$($(PKG)_TARGET_DIR)/.exclude: $(TOPDIR)/.config | $(PKG)_TARGET_DIR
	@$(call write-list-to-file,$(patsubst /%,%,$(patsubst $($(PKG)_DEST_DIR)/%,%,$(strip $($(PKG)_EXCLUDED)))),$$@)

$(pkg): $($(PKG)_TARGET_DIR)/.exclude

$(PKG_LIST)
$(call PKG_ADD_BIN__INT,$(PKG))
endef

# Finalise library packages
define PKG_FINISH_LIB__INT
endef

# check for changed suboptions, should only be called if $(PKG)_REBUILD_SUBOPTS is defined
define PKG_FINISH_CHECK_REBUILD_SUBOPTS__INT1
$(PKG)_FREETZ_CONFIG_FILE:=$(FREETZ_BASE_DIR)/$(SOURCE_DIR)/.$(pkg)_config
endef
define PKG_FINISH_CHECK_REBUILD_SUBOPTS__INT2
$($(PKG)_FREETZ_CONFIG_FILE): $(TOPDIR)/.config | $(SOURCE_DIR)
	@($(foreach OPT,$($(PKG)_REBUILD_SUBOPTS),echo "$(if $($(OPT)),$(OPT)=$($(OPT)),$(_hash) $(OPT) is not set)";):) > $($(PKG)_FREETZ_CONFIG_FILE).temp
	@if ! diff -q $($(PKG)_FREETZ_CONFIG_FILE).temp $($(PKG)_FREETZ_CONFIG_FILE) 2>/dev/null $(SILENT); then \
		$(RM) -r $($(PKG)_DIR); \
		$($(PKG)_CLEAN_TARGET_DIR__INT) \
		mv $($(PKG)_FREETZ_CONFIG_FILE).temp $($(PKG)_FREETZ_CONFIG_FILE); \
	else \
		$(RM) $($(PKG)_FREETZ_CONFIG_FILE).temp; \
	fi
$(pkg)-build-prereq: $($(PKG)_FREETZ_CONFIG_FILE)
endef

# Finalise packages (general functionality + call to type specifics)
define PKG_FINISH__INT
$(pkg)-precompiled--int: $(pkg)-build-prereq $(TOOLCHAIN) $($(PKG)_HOST_DEPENDS_ON) $(patsubst %,%-precompiled,$($(PKG)_DEPENDS_ON))
$(pkg)-precompiled:
	@$(call _ECHO_DONE)

.PHONY: $(pkg)-build-prereq
$(pkg)-build-prereq: $($(PKG)_DIR)/.build-prereq-checked
$($(PKG)_DIR)/.build-prereq-checked:
ifneq ($($(PKG)_BUILD_PREREQ),)
	@MISSING_PREREQ=""; \
	for fv in $($(PKG)_BUILD_PREREQ); do \
		f=$$$$(echo $$$$fv | cut -d ':' -f 1); \
		v=$$$$(echo $$$$fv | cut -d ':' -sf 2 | sed -e 's,[.],[.],g'); \
		if ! which $$$$f >/dev/null 2>&1; then \
			MISSING_PREREQ="$$$$MISSING_PREREQ $$$$f"; \
		elif [ -n "$$$$v" ] && ! $$$$f --version 2>&1 | grep -q "$$$$v"; then \
			MISSING_PREREQ="$$$$MISSING_PREREQ $$$$fv"; \
		fi; \
	done; \
	if [ -n "$$$$MISSING_PREREQ" ]; then \
		echo -n -e "$(_Y)"; \
		echo -e \
			"ERROR: The following commands/packages required for building the $(pkg)-package are missing on your system:" \
			`echo $$$$MISSING_PREREQ | sed -e 's| |, |g'`; \
		if [ -n "$(strip $($(PKG)_BUILD_PREREQ_HINT))" ]; then \
			echo "$($(PKG)_BUILD_PREREQ_HINT)"; \
		fi; \
		echo -n -e "$(_N)"; \
		exit 1; \
	fi;
endif
	@mkdir -p $$(dir $$@); touch $$@;

$(pkg)-dirclean--int:
	$(RM) -r $($(PKG)_DIR)
	$($(PKG)_CLEAN_TARGET_DIR__INT)
#	$($(PKG)_CLEAN_STAGING_DIR__INT)

$(pkg)-dirclean: $(pkg)-dirclean--int
$(pkg)-distclean: $(pkg)-dirclean $(pkg)-clean $(pkg)-uninstall
.PHONY: $(pkg)-dirclean $(pkg)-dirclean--int $(pkg)-distclean $(pkg)-clean $(pkg)-uninstall

PKG:=
PKG_TYPE:=
PKG_MAKEFILE:=
PKG_BASENAME:=
pkg:=
endef

PKG_FINISH=$(eval $(PKG_FINISH_$(PKG_TYPE)__INT))
PKG_FINISH+=$(if $($(PKG)_REBUILD_SUBOPTS),$(eval $(PKG_FINISH_CHECK_REBUILD_SUBOPTS__INT1))$(eval $(PKG_FINISH_CHECK_REBUILD_SUBOPTS__INT2)))
PKG_FINISH+=$(eval $(PKG_FINISH__INT))

### PKG_SOURCE_DOWNLOAD - download source packages

define PKG_SOURCE_DOWNLOAD__INT
NON_LOCALSOURCE_PACKAGES+=$(pkg)
$(DL_DIR)/$($(PKG)_SOURCE): | $(DL_DIR)
	$(call _ECHO,downloading... )
	@if [ -e $(MIRROR_DIR)/$($(PKG)_SOURCE) ]; then \
		$(call MESSAGE, Found $($(PKG)_SOURCE) in $(MIRROR_DIR), creating hard link); \
		ln $(MIRROR_DIR)/$($(PKG)_SOURCE) $(DL_DIR); \
	else \
		$(DL_TOOL) \
			$(DL_DIR) \
			$(if $($(PKG)_SOURCE_DOWNLOAD_NAME),$($(PKG)_SOURCE_DOWNLOAD_NAME),$($(PKG)_SOURCE)) \
			$($(PKG)_SITE) \
			$(or $($(PKG)_SOURCE_SHA512),$($(PKG)_SOURCE_SHA256),$($(PKG)_SOURCE_SHA1),$($(PKG)_SOURCE_MD5)) \
			$(SILENT) \
			$(if $($(PKG)_SOURCE_DOWNLOAD_NAME),&& mv -f $(DL_DIR)/$($(PKG)_SOURCE_DOWNLOAD_NAME) $(DL_DIR)/$($(PKG)_SOURCE)); \
	fi

$(pkg)-download: $(DL_DIR)/$($(PKG)_SOURCE)

$(MIRROR_DIR)/$($(PKG)_SOURCE): | $(MIRROR_DIR)
	@if [ -e $(DL_DIR)/$($(PKG)_SOURCE) ]; then \
		$(call MESSAGE, Found $($(PKG)_SOURCE) in $(DL_DIR), creating hard link); \
		ln $(DL_DIR)/$($(PKG)_SOURCE) $(MIRROR_DIR); \
	else \
		$(DL_TOOL) \
			$(MIRROR_DIR) \
			$(if $($(PKG)_SOURCE_DOWNLOAD_NAME),$($(PKG)_SOURCE_DOWNLOAD_NAME),$($(PKG)_SOURCE)) \
			$($(PKG)_SITE) \
			$(or $($(PKG)_SOURCE_SHA512),$($(PKG)_SOURCE_SHA256),$($(PKG)_SOURCE_SHA1),$($(PKG)_SOURCE_MD5)) \
			$(SILENT) \
			$(if $($(PKG)_SOURCE_DOWNLOAD_NAME),&& mv -f $(DL_DIR)/$($(PKG)_SOURCE_DOWNLOAD_NAME) $(DL_DIR)/$($(PKG)_SOURCE)); \
	fi

$(pkg)-download-mirror: $(MIRROR_DIR)/$($(PKG)_SOURCE)

$(pkg)-check-download:
	@echo -n "Checking download for package $(pkg)..."
	@if $(DL_TOOL) check $($(PKG)_SOURCE) $($(PKG)_SITE); then \
		echo "ok."; \
	else \
		echo "ERROR: NOT FOUND!"; \
	fi

.PHONY: $(pkg)-download $(pkg)-check-download $(pkg)-download-mirror
endef
PKG_SOURCE_DOWNLOAD=$(eval $(PKG_SOURCE_DOWNLOAD__INT))


### PKG_UNPACK - unpack source archive & apply patches
# Unpack, without patch, but only if source package is defined
define PKG_UNPACK
	$(if $($(PKG)_SOURCE), \
		$(strip \
			mkdir -p $($(PKG)_DIR); \
			$(call \
				$(if $($(PKG)_CUSTOM_UNPACK),$(PKG)_CUSTOM_UNPACK,UNPACK_TARBALL), \
				$(DL_DIR)/$($(PKG)_SOURCE), \
				$($(PKG)_DIR), \
				$(strip $(filter-out 0,$($(PKG)_TARBALL_STRIP_COMPONENTS))), \
				$(strip $($(PKG)_TARBALL_INCLUDE_FILTER)) \
			) \
		) \
	)
endef

### PKG_PATCH - apply patches
define PKG_PATCH
	$(subst $(_dollar),$(_dollar)$(_dollar), \
		$(call \
			APPLY_PATCHES, \
			$($(PKG)_MAKE_DIR)/patches \
			$(if $(strip $($(PKG)_CONDITIONAL_PATCHES)),$(addprefix $($(PKG)_MAKE_DIR)/patches/,$(strip $($(PKG)_CONDITIONAL_PATCHES)))), \
			$($(PKG)_DIR) \
		) \
	)
endef

# $1: commands to execute
# $2: optional directory $1 to be executed within, default $($(PKG)_DIR)
define PKG_EXECUTE_WITHIN__INT
	$(if $(strip $(1)),(cd $(if $(strip $(2)),$(strip $(2)),$($(PKG)_DIR)); $(strip $(1))))
endef

# Removes all files under $1 except for those in $2
define RMDIR_KEEP_FILES__INT
	$(if $2,if [ -d "$1" ]; then TMPFILE=`mktemp`; $(TAR) -C $1 -cf $$$$TMPFILE $2; fi;) \
	$(RM) -r $1; \
	$(if $2,if [ -n "$$$$TMPFILE" ]; then mkdir -p $1; $(TAR) -C $1 -xf $$$$TMPFILE; rm -f $$$$TMPFILE; fi;)
endef

## Unpack and patch package
define PKG_UNPACKED__INT
$($(PKG)_DIR)/.unpacked: $(DL_DIR)/$($(PKG)_SOURCE) $(if $($(PKG)_CUSTOM_UNPACK),$($(PKG)_DIR)/.build-prereq-checked) | $(PKG)_SOURCE_DIR $(UNPACK_TARBALL_PREREQUISITES)
	@$(call _ECHO,preparing... )
	@$(call RMDIR_KEEP_FILES__INT,$($(PKG)_DIR),.build-prereq-checked)
	$(call PKG_UNPACK)
	$(call PKG_EXECUTE_WITHIN__INT,$($(PKG)_PATCH_PRE_CMDS))
	$(call PKG_PATCH)
	$(call PKG_EXECUTE_WITHIN__INT,$($(PKG)_PATCH_POST_CMDS))
	@touch $$@
$(pkg)-source: $($(PKG)_DIR)/.unpacked
$(pkg)-unpacked: $($(PKG)_DIR)/.unpacked
.PHONY: $(pkg)-source $(pkg)-unpacked
endef

## "unpack" (actually copy) local source package
define PKG_UNPACKED_LOCALSOURCE_PACKAGE__INT
$($(PKG)_DIR)/.unpacked: $(wildcard $($(PKG)_MAKE_DIR)/src/*) | $(PKG)_SOURCE_DIR
	@$(call _ECHO,preparing... )
	@$(call RMDIR_KEEP_FILES__INT,$($(PKG)_DIR),.build-prereq-checked)
	mkdir -p $($(PKG)_DIR)
	cp -a $$^ $($(PKG)_DIR)
	@touch $$@
$(pkg)-source: $($(PKG)_DIR)/.unpacked
$(pkg)-unpacked: $($(PKG)_DIR)/.unpacked
.PHONY: $(pkg)-source $(pkg)-unpacked
endef

define PKG_UNPACKED_SOURCE__INT
$(PKG)_SOURCE_DIR:
	@mkdir -p $($(PKG)_SOURCE_DIR)
.PHONY: $(PKG)_SOURCE_DIR
endef

## check for changed suboptions, should only be called if $(PKG)_REBUILD_SUBOPTS is defined
define PKG_UNPACKED_CHECK_REBUILD_SUBOPTS
$($(PKG)_DIR)/.unpacked: $($(PKG)_FREETZ_CONFIG_FILE)
endef

## check for changed files in files and patches folder
define PKG_UNPACKED_CHECK_CHANGES__INT1
$(PKG)_FREETZ_CHANGES_FILE:=$(FREETZ_BASE_DIR)/$(SOURCE_DIR)/.$(pkg)_changes
$(PKG)_FREETZ_CHANGES_RECOMPILE_SEARCH:=patches/.*\|src/.*\|$(pkg)\.mk\|$(pkg).*\.mk\.in\|Makefile\.in\|Config\.in\|Config\.in\.libs\|Config\.in\.modules
$(PKG)_FREETZ_CHANGES_REPACK_SEARCH:=files/.*
endef
define PKG_UNPACKED_CHECK_CHANGES__INT2
$(PKG)_FREETZ_CHANGES_CHECK: $(PKG)_SOURCE_DIR
	@find $($(PKG)_MAKE_DIR) \
		-regex "^$($(PKG)_MAKE_DIR)/\($($(PKG)_FREETZ_CHANGES_RECOMPILE_SEARCH)\|$($(PKG)_FREETZ_CHANGES_REPACK_SEARCH)\)" \
		! -wholename '*/.svn*' -printf '%TY-%Tm-%Td %TH:%TM:%TS\t%P\n' 2>/dev/null | sort -k 3 >$($(PKG)_FREETZ_CHANGES_FILE).temp
	@if [ -e $($(PKG)_FREETZ_CHANGES_FILE) ]; then \
		for i in 1 2; do \
			PATTERN=; \
			[ $$$$i = 1 ] && PATTERN='$($(PKG)_FREETZ_CHANGES_RECOMPILE_SEARCH)'; \
			[ $$$$i = 2 ] && PATTERN='$($(PKG)_FREETZ_CHANGES_REPACK_SEARCH)'; \
			if [ ! -z "$$$$PATTERN" ]; then \
				if [ "`grep -e "$$$$PATTERN" $($(PKG)_FREETZ_CHANGES_FILE)`" != "`grep -e "$$$$PATTERN" $($(PKG)_FREETZ_CHANGES_FILE).temp`" ]; then \
					mv $($(PKG)_FREETZ_CHANGES_FILE).temp $($(PKG)_FREETZ_CHANGES_FILE); \
					[ $$$$i == 1 ] && $(RM) -r $($(PKG)_DIR); \
					$($(PKG)_CLEAN_TARGET_DIR__INT) \
					$($(PKG)_CLEAN_STAGING_DIR__INT) \
					break; \
				fi \
			fi \
		done \
	else \
		mv $($(PKG)_FREETZ_CHANGES_FILE).temp $($(PKG)_FREETZ_CHANGES_FILE); \
	fi
	@$(RM) $($(PKG)_FREETZ_CHANGES_FILE).temp
$(pkg)-build-prereq: $(PKG)_FREETZ_CHANGES_CHECK
.PHONY: $(PKG)_FREETZ_CHANGES_CHECK
endef

PKG_UNPACKED           =$(eval $(PKG_UNPACKED_SOURCE__INT))
PKG_LOCALSOURCE_PACKAGE=$(eval $(PKG_UNPACKED_SOURCE__INT))
#
ifeq ($(strip $(FREETZ_CHECK_CHANGED)),y)
PKG_UNPACKED           +=$(eval $(PKG_UNPACKED_CHECK_CHANGES__INT1))$(eval $(PKG_UNPACKED_CHECK_CHANGES__INT2))
PKG_LOCALSOURCE_PACKAGE+=$(eval $(PKG_UNPACKED_CHECK_CHANGES__INT1))$(eval $(PKG_UNPACKED_CHECK_CHANGES__INT2))
endif
#
PKG_UNPACKED           +=$(eval $(PKG_UNPACKED__INT))
PKG_LOCALSOURCE_PACKAGE+=$(eval $(PKG_UNPACKED_LOCALSOURCE_PACKAGE__INT))
#
PKG_UNPACKED           +=$(if $($(PKG)_REBUILD_SUBOPTS),$(eval $(PKG_UNPACKED_CHECK_REBUILD_SUBOPTS)))
PKG_LOCALSOURCE_PACKAGE+=$(if $($(PKG)_REBUILD_SUBOPTS),$(eval $(PKG_UNPACKED_CHECK_REBUILD_SUBOPTS)))

### Configure package
define PKG_CONFIGURED_COMMON__INT
$(pkg)-configured: $($(PKG)_DIR)/.configured
.PHONY: $(pkg)-configured
endef
## Configure package, using ./configure
define PKG_CONFIGURED_CONFIGURE__INT
# Must be first
$(PKG_CONFIGURED_COMMON__INT)
$($(PKG)_DIR)/.configured: $($(PKG)_DIR)/.build-prereq-checked $($(PKG)_DIR)/.unpacked
	@$(call _ECHO,configuring... )
	($(CONFIGURE) \
		cd $($(PKG)_DIR); \
		$(if $(strip $(FREETZ_BACKUP_CONFIG_CACHE)),$(call BACKUP_CONFIG_CACHE,before-$(pkg)),) \
		$(TARGET_CONFIGURE_PRE_CMDS) \
		$($(PKG)_CONFIGURE_PRE_CMDS) \
		$(if $(strip $($(PKG)_BUILD_SUBDIR)),cd $(strip $($(PKG)_BUILD_SUBDIR));,) \
		$(TARGET_CONFIGURE_ENV) \
		$($(PKG)_CONFIGURE_ENV) \
		CONFIG_SITE=$(CONFIG_SITE) \
		conf_cmd \
		$(if $(findstring y,$($(PKG)_CONFIGURE_DEFOPTS)), $(TARGET_CONFIGURE_OPTIONS)) \
		$($(PKG)_CONFIGURE_OPTIONS) \
		$(if $(strip $($(PKG)_BUILD_SUBDIR)),&& { cd $(abspath $($(PKG)_DIR)); },) \
		$(if $($(PKG)_CONFIGURE_POST_CMDS),&& { $($(PKG)_CONFIGURE_POST_CMDS) },) \
		$(if $(strip $(FREETZ_BACKUP_CONFIG_CACHE)),&& { $(call BACKUP_CONFIG_CACHE,after-$(pkg)) },) \
	)
	@touch $$@
endef
PKG_CONFIGURED_CONFIGURE=$(eval $(PKG_CONFIGURED_CONFIGURE__INT))

## Package needs no configuration
define PKG_CONFIGURED_NOP__INT
# Must be first
$(PKG_CONFIGURED_COMMON__INT)
$($(PKG)_DIR)/.configured: $($(PKG)_DIR)/.build-prereq-checked $($(PKG)_DIR)/.unpacked
	@touch $$@
endef
PKG_CONFIGURED_NOP=$(eval $(PKG_CONFIGURED_NOP__INT))


## Add package to static or dynamic list
define PKG_LIST__INT
$(pkg)-list:
ifeq ($(strip $(FREETZ_PACKAGE_$(PKG))),y)
	@echo "S$(strip $($(PKG)_STARTLEVEL))$(pkg)-$($(PKG)_VERSION)" >> .static
else
	@echo "S$(strip $($(PKG)_STARTLEVEL))$(pkg)-$($(PKG)_VERSION)" >> .dynamic
endif
.PHONY: $(pkg)-list
endef
PKG_LIST=$(eval $(PKG_LIST__INT))