#
-# Copyright (C) 2006-2008 OpenWrt.org
+# Copyright (C) 2006-2010 OpenWrt.org
+# Copyright (C) 2016 LEDE Project
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
-# $Id$
ifneq ($(__rules_inc),1)
__rules_inc=1
include $(TOPDIR)/include/debug.mk
include $(TOPDIR)/include/verbose.mk
-TMP_DIR:=$(TOPDIR)/tmp
-
-export SHELL=/usr/bin/env bash -c '. $(TOPDIR)/include/shell.sh; eval "$$2"' --
+export TMP_DIR:=$(TOPDIR)/tmp
qstrip=$(strip $(subst ",,$(1)))
#"))
empty:=
space:= $(empty) $(empty)
+comma:=,
merge=$(subst $(space),,$(1))
confvar=$(call merge,$(foreach v,$(1),$(if $($(v)),y,n)))
strip_last=$(patsubst %.$(lastword $(subst .,$(space),$(1))),%,$(1))
+paren_left = (
+paren_right = )
+chars_lower = a b c d e f g h i j k l m n o p q r s t u v w x y z
+chars_upper = A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
+
+define sep
+
+endef
+
+define newline
+
+
+endef
+
+__tr_list = $(join $(join $(1),$(foreach char,$(1),$(comma))),$(2))
+__tr_head_stripped = $(subst $(space),,$(foreach cv,$(call __tr_list,$(1),$(2)),$$$(paren_left)subst$(cv)$(comma)))
+__tr_head = $(subst $(paren_left)subst,$(paren_left)subst$(space),$(__tr_head_stripped))
+__tr_tail = $(subst $(space),,$(foreach cv,$(1),$(paren_right)))
+__tr_template = $(__tr_head)$$(1)$(__tr_tail)
+
+$(eval toupper = $(call __tr_template,$(chars_lower),$(chars_upper)))
+$(eval tolower = $(call __tr_template,$(chars_upper),$(chars_lower)))
+
_SINGLE=export MAKEFLAGS=$(space);
+CFLAGS:=
ARCH:=$(subst i486,i386,$(subst i586,i386,$(subst i686,i386,$(call qstrip,$(CONFIG_ARCH)))))
+ARCH_PACKAGES:=$(call qstrip,$(CONFIG_TARGET_ARCH_PACKAGES))
BOARD:=$(call qstrip,$(CONFIG_TARGET_BOARD))
+SUBTARGET:=$(call qstrip,$(CONFIG_TARGET_SUBTARGET))
TARGET_OPTIMIZATION:=$(call qstrip,$(CONFIG_TARGET_OPTIMIZATION))
+export EXTRA_OPTIMIZATION:=$(filter-out -fno-plt,$(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION)))
TARGET_SUFFIX=$(call qstrip,$(CONFIG_TARGET_SUFFIX))
BUILD_SUFFIX:=$(call qstrip,$(CONFIG_BUILD_SUFFIX))
-GCCV:=$(call qstrip,$(CONFIG_GCC_VERSION))
-LIBC:=$(call qstrip,$(CONFIG_LIBC))
-LIBCV:=$(call qstrip,$(CONFIG_LIBC_VERSION))
SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
+BUILD_SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
+export SHELL:=/usr/bin/env bash
+
+IS_PACKAGE_BUILD := $(if $(filter package/%,$(BUILD_SUBDIR)),1)
OPTIMIZE_FOR_CPU=$(subst i386,i486,$(ARCH))
FPIC:=-fpic
endif
+HOST_FPIC:=-fPIC
+
+ARCH_SUFFIX:=$(call qstrip,$(CONFIG_CPU_TYPE))
+GCC_ARCH:=
+
+ifneq ($(ARCH_SUFFIX),)
+ ARCH_SUFFIX:=_$(ARCH_SUFFIX)
+endif
+ifneq ($(filter -march=armv%,$(TARGET_OPTIMIZATION)),)
+ GCC_ARCH:=$(patsubst -march=%,%,$(filter -march=armv%,$(TARGET_OPTIMIZATION)))
+endif
+ifdef CONFIG_HAS_SPE_FPU
+ TARGET_SUFFIX:=$(TARGET_SUFFIX)spe
+endif
+ifdef CONFIG_MIPS64_ABI
+ ifneq ($(CONFIG_MIPS64_ABI_O32),y)
+ ARCH_SUFFIX:=$(ARCH_SUFFIX)_$(call qstrip,$(CONFIG_MIPS64_ABI))
+ endif
+endif
+
DL_DIR:=$(if $(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(TOPDIR)/dl)
-BIN_DIR:=$(TOPDIR)/bin
+OUTPUT_DIR:=$(if $(call qstrip,$(CONFIG_BINARY_FOLDER)),$(call qstrip,$(CONFIG_BINARY_FOLDER)),$(TOPDIR)/bin)
+BIN_DIR:=$(OUTPUT_DIR)/targets/$(BOARD)/$(SUBTARGET)
INCLUDE_DIR:=$(TOPDIR)/include
SCRIPT_DIR:=$(TOPDIR)/scripts
BUILD_DIR_BASE:=$(TOPDIR)/build_dir
-BUILD_DIR:=$(BUILD_DIR_BASE)/target-$(ARCH)_$(LIBC)-$(LIBCV)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
-BUILD_DIR_HOST:=$(BUILD_DIR_BASE)/host
-BUILD_DIR_TOOLCHAIN:=$(BUILD_DIR_BASE)/toolchain-$(ARCH)_gcc-$(GCCV)_$(LIBC)-$(LIBCV)
-STAGING_DIR:=$(TOPDIR)/staging_dir/target-$(ARCH)_$(LIBC)-$(LIBCV)
-STAGING_DIR_HOST:=$(TOPDIR)/staging_dir/host
-TOOLCHAIN_DIR:=$(TOPDIR)/staging_dir/toolchain-$(ARCH)_gcc-$(GCCV)_$(LIBC)-$(LIBCV)
-PACKAGE_DIR:=$(BIN_DIR)/packages/target-$(ARCH)_$(LIBC)-$(LIBCV)
+ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+ GCCV:=$(call qstrip,$(CONFIG_GCC_VERSION))
+ LIBC:=$(call qstrip,$(CONFIG_LIBC))
+ LIBCV:=$(call qstrip,$(CONFIG_LIBC_VERSION))
+ REAL_GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))
+ GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux
+ DIR_SUFFIX:=_$(LIBC)-$(LIBCV)$(if $(CONFIG_arm),_eabi)
+ BIN_DIR:=$(BIN_DIR)$(if $(CONFIG_USE_MUSL),,-$(LIBC))
+ TARGET_DIR_NAME = target-$(ARCH)$(ARCH_SUFFIX)$(DIR_SUFFIX)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
+ TOOLCHAIN_DIR_NAME = toolchain-$(ARCH)$(ARCH_SUFFIX)_gcc-$(GCCV)$(DIR_SUFFIX)
+else
+ ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
+ GNU_TARGET_NAME=$(call qstrip,$(CONFIG_TARGET_NAME))
+ else
+ GNU_TARGET_NAME=$(shell gcc -dumpmachine)
+ endif
+ REAL_GNU_TARGET_NAME=$(GNU_TARGET_NAME)
+ TARGET_DIR_NAME:=target-$(GNU_TARGET_NAME)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
+ TOOLCHAIN_DIR_NAME:=toolchain-$(GNU_TARGET_NAME)
+endif
+
+ifeq ($(or $(CONFIG_EXTERNAL_TOOLCHAIN),$(CONFIG_GCC_VERSION_4_8),$(CONFIG_TARGET_uml)),)
+ iremap = -iremap $(1):$(2)
+endif
+
+PACKAGE_DIR:=$(BIN_DIR)/packages
+BUILD_DIR:=$(BUILD_DIR_BASE)/$(TARGET_DIR_NAME)
+STAGING_DIR:=$(TOPDIR)/staging_dir/$(TARGET_DIR_NAME)
+BUILD_DIR_TOOLCHAIN:=$(BUILD_DIR_BASE)/$(TOOLCHAIN_DIR_NAME)
+TOOLCHAIN_DIR:=$(TOPDIR)/staging_dir/$(TOOLCHAIN_DIR_NAME)
STAMP_DIR:=$(BUILD_DIR)/stamp
STAMP_DIR_HOST=$(BUILD_DIR_HOST)/stamp
TARGET_ROOTFS_DIR?=$(if $(call qstrip,$(CONFIG_TARGET_ROOTFS_DIR)),$(call qstrip,$(CONFIG_TARGET_ROOTFS_DIR)),$(BUILD_DIR))
TARGET_DIR:=$(TARGET_ROOTFS_DIR)/root-$(BOARD)
-DEBUG_DIR:=$(BUILD_DIR)/debug-$(BOARD)
+STAGING_DIR_ROOT:=$(STAGING_DIR)/root-$(BOARD)
+BUILD_LOG_DIR:=$(TOPDIR)/logs
+PKG_INFO_DIR := $(STAGING_DIR)/pkginfo
-TARGET_PATH:=$(TOOLCHAIN_DIR)/usr/bin:$(STAGING_DIR_HOST)/bin:$(PATH)
-TARGET_PATH_PKG:=$(STAGING_DIR)/host/bin:$(TARGET_PATH)
-TARGET_CFLAGS:=$(TARGET_OPTIMIZATION)$(if $(CONFIG_DEBUG), -g3)
+BUILD_DIR_HOST:=$(if $(IS_PACKAGE_BUILD),$(BUILD_DIR)/host,$(BUILD_DIR_BASE)/host)
+STAGING_DIR_HOST:=$(TOPDIR)/staging_dir/host
+
+TARGET_PATH:=$(subst $(space),:,$(filter-out .,$(filter-out ./,$(subst :,$(space),$(PATH)))))
+TARGET_INIT_PATH:=$(call qstrip,$(CONFIG_TARGET_INIT_PATH))
+TARGET_INIT_PATH:=$(if $(TARGET_INIT_PATH),$(TARGET_INIT_PATH),/usr/sbin:/sbin:/usr/bin:/bin)
+TARGET_CFLAGS:=$(TARGET_OPTIMIZATION)$(if $(CONFIG_DEBUG), -g3) $(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION))
+TARGET_CXXFLAGS = $(TARGET_CFLAGS)
+TARGET_ASFLAGS_DEFAULT = $(TARGET_CFLAGS)
+TARGET_ASFLAGS = $(TARGET_ASFLAGS_DEFAULT)
TARGET_CPPFLAGS:=-I$(STAGING_DIR)/usr/include -I$(STAGING_DIR)/include
-TARGET_LDFLAGS:=-L$(TOOLCHAIN_DIR)/usr/lib -L$(TOOLCHAIN_DIR)/lib -L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib
-LIBGCC_S=$(if $(wildcard $(TOOLCHAIN_DIR)/lib/libgcc_s.so),-lgcc_s,$(wildcard $(TOOLCHAIN_DIR)/lib/gcc/*/*/libgcc.a))
+TARGET_LDFLAGS:=-L$(STAGING_DIR)/usr/lib -L$(STAGING_DIR)/lib
+ifneq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+LIBGCC_S_PATH=$(realpath $(wildcard $(call qstrip,$(CONFIG_LIBGCC_ROOT_DIR))/$(call qstrip,$(CONFIG_LIBGCC_FILE_SPEC))))
+LIBGCC_S=$(if $(LIBGCC_S_PATH),-L$(dir $(LIBGCC_S_PATH)) -lgcc_s)
+LIBGCC_A=$(realpath $(lastword $(wildcard $(dir $(LIBGCC_S_PATH))/gcc/*/*/libgcc.a)))
+else
+LIBGCC_A=$(lastword $(wildcard $(TOOLCHAIN_DIR)/lib/gcc/*/*/libgcc.a))
+LIBGCC_S=$(if $(wildcard $(TOOLCHAIN_DIR)/lib/libgcc_s.so),-L$(TOOLCHAIN_DIR)/lib -lgcc_s,$(LIBGCC_A))
+endif
+LIBRPC=-lrpc
+LIBRPC_DEPENDS=+librpc
-ifndef DUMP
-ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
- -include $(TOOLCHAIN_DIR)/info.mk
- REAL_GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))
- GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-openwrt-linux
- TARGET_CROSS:=$(if $(TARGET_CROSS),$(TARGET_CROSS),$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))-)
- TARGET_CFLAGS+= -fhonour-copts
+ifeq ($(CONFIG_ARCH_64BIT),y)
+ LIB_SUFFIX:=64
endif
+
+ifndef DUMP
+ ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+ -include $(TOOLCHAIN_DIR)/info.mk
+ export GCC_HONOUR_COPTS:=0
+ TARGET_CROSS:=$(if $(TARGET_CROSS),$(TARGET_CROSS),$(OPTIMIZE_FOR_CPU)-openwrt-linux$(if $(TARGET_SUFFIX),-$(TARGET_SUFFIX))-)
+ TARGET_CFLAGS+= -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result
+ TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/usr/include
+ ifeq ($(CONFIG_USE_MUSL),y)
+ TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/include/fortify
+ endif
+ TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/include
+ TARGET_LDFLAGS+= -L$(TOOLCHAIN_DIR)/usr/lib -L$(TOOLCHAIN_DIR)/lib
+ TARGET_PATH:=$(TOOLCHAIN_DIR)/bin:$(TARGET_PATH)
+ else
+ ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
+ TARGET_CROSS:=$(call qstrip,$(CONFIG_TOOLCHAIN_PREFIX))
+ TOOLCHAIN_ROOT_DIR:=$(call qstrip,$(CONFIG_TOOLCHAIN_ROOT))
+ TOOLCHAIN_BIN_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_BIN_PATH)))
+ TOOLCHAIN_INC_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_INC_PATH)))
+ TOOLCHAIN_LIB_DIRS:=$(patsubst ./%,$(TOOLCHAIN_ROOT_DIR)/%,$(call qstrip,$(CONFIG_TOOLCHAIN_LIB_PATH)))
+ ifneq ($(TOOLCHAIN_BIN_DIRS),)
+ TARGET_PATH:=$(subst $(space),:,$(TOOLCHAIN_BIN_DIRS)):$(TARGET_PATH)
+ endif
+ ifneq ($(TOOLCHAIN_INC_DIRS),)
+ TARGET_CPPFLAGS+= $(patsubst %,-I%,$(TOOLCHAIN_INC_DIRS))
+ endif
+ ifneq ($(TOOLCHAIN_LIB_DIRS),)
+ TARGET_LDFLAGS+= $(patsubst %,-L%,$(TOOLCHAIN_LIB_DIRS))
+ endif
+ TARGET_PATH:=$(TOOLCHAIN_DIR)/bin:$(TARGET_PATH)
+ endif
+ endif
endif
+TARGET_PATH_PKG:=$(STAGING_DIR)/host/bin:$(TARGET_PATH)
ifeq ($(CONFIG_SOFT_FLOAT),y)
SOFT_FLOAT_CONFIG_OPTION:=--with-float=soft
- TARGET_CFLAGS+= -msoft-float
+ ifeq ($(CONFIG_arm),y)
+ TARGET_CFLAGS+= -mfloat-abi=soft
+ else
+ TARGET_CFLAGS+= -msoft-float
+ endif
else
SOFT_FLOAT_CONFIG_OPTION:=
+ ifeq ($(CONFIG_arm),y)
+ TARGET_CFLAGS+= -mfloat-abi=hard
+ endif
endif
export PATH:=$(TARGET_PATH)
-export STAGING_DIR
-export GCC_HONOUR_COPTS:=0
+export STAGING_DIR STAGING_DIR_HOST
+export SH_FUNC:=. $(INCLUDE_DIR)/shell.sh;
PKG_CONFIG:=$(STAGING_DIR_HOST)/bin/pkg-config
export PKG_CONFIG
HOSTCC:=gcc
-HOST_CFLAGS:=-O2 -I$(STAGING_DIR_HOST)/include
-HOST_LDFLAGS:=-L$(STAGING_DIR_HOST)/lib
+HOSTCXX:=g++
+HOST_CPPFLAGS:=-I$(STAGING_DIR_HOST)/include -I$(STAGING_DIR_HOST)/usr/include $(if $(IS_PACKAGE_BUILD),-I$(STAGING_DIR)/host/include)
+HOST_CFLAGS:=-O2 $(HOST_CPPFLAGS)
+HOST_LDFLAGS:=-L$(STAGING_DIR_HOST)/lib -L$(STAGING_DIR_HOST)/usr/lib $(if $(IS_PACKAGE_BUILD),-L$(STAGING_DIR)/host/lib)
+
+ifeq ($(CONFIG_EXTERNAL_TOOLCHAIN),)
+ TARGET_AR:=$(TARGET_CROSS)gcc-ar
+ TARGET_RANLIB:=$(TARGET_CROSS)gcc-ranlib
+ TARGET_NM:=$(TARGET_CROSS)gcc-nm
+else
+ TARGET_AR:=$(TARGET_CROSS)ar
+ TARGET_RANLIB:=$(TARGET_CROSS)ranlib
+ TARGET_NM:=$(TARGET_CROSS)nm
+endif
+
+BUILD_KEY=$(TOPDIR)/key-build
TARGET_CC:=$(TARGET_CROSS)gcc
TARGET_CXX:=$(TARGET_CROSS)g++
-STRIP:=$(STAGING_DIR_HOST)/bin/sstrip
-PATCH:=$(SCRIPT_DIR)/patch-kernel.sh
+KPATCH:=$(SCRIPT_DIR)/patch-kernel.sh
SED:=$(STAGING_DIR_HOST)/bin/sed -i -e
CP:=cp -fpR
+LN:=ln -sf
+XARGS:=xargs -r
+
+BASH:=bash
+TAR:=tar
+FIND:=find
+PATCH:=patch
+PYTHON:=python
INSTALL_BIN:=install -m0755
INSTALL_DIR:=install -d -m0755
INSTALL_DATA:=install -m0644
INSTALL_CONF:=install -m0600
+TARGET_CC_NOCACHE:=$(TARGET_CC)
+TARGET_CXX_NOCACHE:=$(TARGET_CXX)
+HOSTCC_NOCACHE:=$(HOSTCC)
+HOSTCXX_NOCACHE:=$(HOSTCXX)
+export TARGET_CC_NOCACHE
+export TARGET_CXX_NOCACHE
+export HOSTCC_NOCACHE
+
ifneq ($(CONFIG_CCACHE),)
- # FIXME: move this variable to a better location
- export CCACHE_DIR=$(STAGING_DIR)/ccache
- TARGET_CC:= ccache $(TARGET_CC)
+ TARGET_CC:= ccache_cc
+ TARGET_CXX:= ccache_cxx
+ HOSTCC:= ccache $(HOSTCC)
+ HOSTCXX:= ccache $(HOSTCXX)
endif
-TARGET_CONFIGURE_OPTS:= \
- AR=$(TARGET_CROSS)ar \
- AS="$(TARGET_CC) -c $(TARGET_CFLAGS)" \
+TARGET_CONFIGURE_OPTS = \
+ AR="$(TARGET_AR)" \
+ AS="$(TARGET_CC) -c $(TARGET_ASFLAGS)" \
LD=$(TARGET_CROSS)ld \
- NM=$(TARGET_CROSS)nm \
+ NM="$(TARGET_NM)" \
CC="$(TARGET_CC)" \
GCC="$(TARGET_CC)" \
CXX="$(TARGET_CXX)" \
- RANLIB=$(TARGET_CROSS)ranlib \
+ RANLIB="$(TARGET_RANLIB)" \
STRIP=$(TARGET_CROSS)strip \
OBJCOPY=$(TARGET_CROSS)objcopy \
OBJDUMP=$(TARGET_CROSS)objdump \
# strip an entire directory
ifneq ($(CONFIG_NO_STRIP),)
RSTRIP:=:
+ STRIP:=:
else
- RSTRIP:= \
+ ifneq ($(CONFIG_USE_STRIP),)
+ STRIP:=$(TARGET_CROSS)strip $(call qstrip,$(CONFIG_STRIP_ARGS))
+ else
+ ifneq ($(CONFIG_USE_SSTRIP),)
+ STRIP:=$(STAGING_DIR_HOST)/bin/sstrip
+ endif
+ endif
+ RSTRIP= \
+ export CROSS="$(TARGET_CROSS)" \
+ $(if $(PKG_BUILD_ID),KEEP_BUILD_ID=1) \
+ $(if $(CONFIG_KERNEL_KALLSYMS),NO_RENAME=1) \
+ $(if $(CONFIG_KERNEL_PROFILING),KEEP_SYMBOLS=1); \
NM="$(TARGET_CROSS)nm" \
STRIP="$(STRIP)" \
- STRIP_KMOD="$(TARGET_CROSS)strip --strip-unneeded --remove-section=.comment" \
+ STRIP_KMOD="$(SCRIPT_DIR)/strip-kmod.sh" \
+ PATCHELF="$(STAGING_DIR_HOST)/bin/patchelf" \
$(SCRIPT_DIR)/rstrip.sh
endif
-ifeq ($(CONFIG_ENABLE_LOCALE),true)
- DISABLE_NLS:=
+ifeq ($(CONFIG_IPV6),y)
+ DISABLE_IPV6:=
else
- DISABLE_NLS:=--disable-nls
+ DISABLE_IPV6:=--disable-ipv6
endif
-ifneq ($(CONFIG_LARGEFILE),y)
- DISABLE_LARGEFILE= --disable-largefile
-endif
+TAR_OPTIONS:=-xf -
-ifeq ($(CONFIG_TAR_VERBOSITY),y)
- TAR_OPTIONS:=-xvf -
-else
- TAR_OPTIONS:=-xf -
+ifeq ($(CONFIG_BUILD_LOG),y)
+ BUILD_LOG:=1
endif
+export BISON_PKGDATADIR:=$(STAGING_DIR_HOST)/share/bison
+export M4:=$(STAGING_DIR_HOST)/bin/m4
+
define shvar
V_$(subst .,_,$(subst -,_,$(subst /,_,$(1))))
endef
define shexport
-$(call shvar,$(1))=$$(call $(1))
-export $(call shvar,$(1))
+export $(call shvar,$(1))=$$(call $(1))
+endef
+
+define include_mk
+$(eval -include $(if $(DUMP),,$(STAGING_DIR)/mk/$(strip $(1))))
+endef
+
+# Execute commands under flock
+# $(1) => The shell expression.
+# $(2) => The lock name. If not given, the global lock will be used.
+ifneq ($(wildcard $(STAGING_DIR_HOST)/bin/flock),)
+ define locked
+ SHELL= \
+ flock \
+ $(TMP_DIR)/.$(if $(2),$(strip $(2)),global).flock \
+ -c '$(subst ','\'',$(1))'
+ endef
+else
+ locked=$(1)
+endif
+
+# Recursively copy paths into another directory, purge dangling
+# symlinks before.
+# $(1) => File glob expression
+# $(2) => Destination directory
+define file_copy
+ for src_dir in $(sort $(foreach d,$(wildcard $(1)),$(dir $(d)))); do \
+ ( cd $$src_dir; find -type f -or -type d ) | \
+ ( cd $(2); while :; do \
+ read FILE; \
+ [ -z "$$FILE" ] && break; \
+ [ -L "$$FILE" ] || continue; \
+ echo "Removing symlink $(2)/$$FILE"; \
+ rm -f "$$FILE"; \
+ done; ); \
+ done; \
+ $(CP) $(1) $(2)
+endef
+
+# Calculate sha256sum of any plain file within a given directory
+# $(1) => Input directory
+define sha256sums
+ (cd $(1); find . -maxdepth 1 -type f -not -name 'sha256sums' -printf "%P\n" | sort | \
+ xargs openssl dgst -sha256 | sed -ne 's!^SHA256(\(.*\))= \(.*\)$$!\2 *\1!p' > sha256sums)
endef
# file extension
FORCE: ;
.PHONY: FORCE
+val.%:
+ @$(if $(filter undefined,$(origin $*)),\
+ echo "$* undefined" >&2, \
+ echo '$(subst ','"'"',$($*))' \
+ )
+
+var.%:
+ @$(if $(filter undefined,$(origin $*)),\
+ echo "$* undefined" >&2, \
+ echo "$*='"'$(subst ','"'\"'\"'"',$($*))'"'" \
+ )
+
endif #__rules_inc