X-Git-Url: http://git.openwrt.org/?p=openwrt%2Fstaging%2Fstintel.git;a=blobdiff_plain;f=rules.mk;h=66ddea288306e1a89f3b5588050a9469e94efe2a;hp=80e07d11a20597d91ddb62d218350a61d87858db;hb=HEAD;hpb=f0721fa502bcd44499ef7265a784a78e0e13fa0b

diff --git a/rules.mk b/rules.mk
index 80e07d11a2..84586ac26b 100644
--- a/rules.mk
+++ b/rules.mk
@@ -1,9 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0-only
 #
 # Copyright (C) 2006-2010 OpenWrt.org
-#
-# This is free software, licensed under the GNU General Public License v2.
-# See /LICENSE for more information.
-#
+# Copyright (C) 2016 LEDE Project
 
 ifneq ($(__rules_inc),1)
 __rules_inc=1
@@ -14,45 +12,74 @@ endif
 include $(TOPDIR)/include/debug.mk
 include $(TOPDIR)/include/verbose.mk
 
-export TMP_DIR:=$(TOPDIR)/tmp
+ifneq ($(filter check,$(MAKECMDGOALS)),)
+CHECK:=1
+DUMP:=1
+endif
 
-GREP_OPTIONS=
-export GREP_OPTIONS
+export TMP_DIR:=$(TOPDIR)/tmp
+export TMPDIR:=$(TMP_DIR)
 
 qstrip=$(strip $(subst ",,$(1)))
 #"))
 
 empty:=
 space:= $(empty) $(empty)
+comma:=,
 merge=$(subst $(space),,$(1))
-confvar=$(call merge,$(foreach v,$(1),$(if $($(v)),y,n)))
+confvar=$(shell echo '$(foreach v,$(1),$(v)=$(subst ','\'',$($(v))))' | $(MKHASH) md5)
 strip_last=$(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)))
+
+version_abbrev = $(if $(if $(CHECK),,$(DUMP)),$(1),$(shell printf '%.8s' $(1)))
+
 _SINGLE=export MAKEFLAGS=$(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,$(CONFIG_TARGET_OPTIMIZATION))
-export EXTRA_OPTIMIZATION:=$(call qstrip,$(CONFIG_EXTRA_OPTIMIZATION))
 TARGET_SUFFIX=$(call qstrip,$(CONFIG_TARGET_SUFFIX))
 BUILD_SUFFIX:=$(call qstrip,$(CONFIG_BUILD_SUFFIX))
 SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
+BUILD_SUBDIR:=$(patsubst $(TOPDIR)/%,%,${CURDIR})
+NPROC:=$(shell sysctl -n hw.ncpu 2>/dev/null || nproc)
 export SHELL:=/usr/bin/env bash
 
+IS_PACKAGE_BUILD := $(if $(filter package/%,$(BUILD_SUBDIR)),1)
+
 OPTIMIZE_FOR_CPU=$(subst i386,i486,$(ARCH))
 
-ifeq ($(ARCH),powerpc)
-  FPIC:=-fPIC
+ifneq (,$(findstring $(ARCH) , aarch64 aarch64_be powerpc ))
+  FPIC:=-DPIC -fPIC
 else
-  FPIC:=-fpic
+  FPIC:=-DPIC -fpic
 endif
 
-HOST_FPIC:=-fPIC
+HOST_FPIC:=-DPIC -fPIC
 
 ARCH_SUFFIX:=$(call qstrip,$(CONFIG_CPU_TYPE))
 GCC_ARCH:=
@@ -72,26 +99,31 @@ ifdef CONFIG_MIPS64_ABI
   endif
 endif
 
-DL_DIR:=$(if $(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(TOPDIR)/dl)
-BIN_DIR:=$(if $(call qstrip,$(CONFIG_BINARY_FOLDER)),$(call qstrip,$(CONFIG_BINARY_FOLDER)),$(TOPDIR)/bin/$(BOARD))
+DEFAULT_SUBDIR_TARGETS:=clean download prepare compile update refresh prereq dist distcheck configure check check-depends
+
+define DefaultTargets
+$(foreach t,$(DEFAULT_SUBDIR_TARGETS) $(1),
+  .$(t):
+  $(t): .$(t)
+  .PHONY: $(t) .$(t)
+)
+endef
+
+DL_DIR=$(if $(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(call qstrip,$(CONFIG_DOWNLOAD_FOLDER)),$(TOPDIR)/dl)$(if $(DL_SUBDIR),/$(DL_SUBDIR))
+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:=$(TOPDIR)/build_dir
-BUILD_DIR_HOST:=$(BUILD_DIR_BASE)/host
-STAGING_DIR_HOST:=$(TOPDIR)/staging_dir/host
 ifeq ($(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 $(CONFIG_USE_UCLIBC),,-$(LIBC))
-  BUILD_DIR:=$(BUILD_DIR_BASE)/target-$(ARCH)$(ARCH_SUFFIX)$(DIR_SUFFIX)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
-  STAGING_DIR:=$(TOPDIR)/staging_dir/target-$(ARCH)$(ARCH_SUFFIX)$(DIR_SUFFIX)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
-  BUILD_DIR_TOOLCHAIN:=$(BUILD_DIR_BASE)/toolchain-$(ARCH)$(ARCH_SUFFIX)_gcc-$(GCCV)$(DIR_SUFFIX)
-  TOOLCHAIN_DIR:=$(TOPDIR)/staging_dir/toolchain-$(ARCH)$(ARCH_SUFFIX)_gcc-$(GCCV)$(DIR_SUFFIX)
-  PACKAGE_DIR:=$(BIN_DIR)/packages
+  DIR_SUFFIX:=_$(LIBC)$(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,$(CONFIG_TARGET_NAME))
@@ -99,27 +131,41 @@ else
     GNU_TARGET_NAME=$(shell gcc -dumpmachine)
   endif
   REAL_GNU_TARGET_NAME=$(GNU_TARGET_NAME)
-  BUILD_DIR:=$(BUILD_DIR_BASE)/target-$(GNU_TARGET_NAME)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
-  STAGING_DIR:=$(TOPDIR)/staging_dir/target-$(GNU_TARGET_NAME)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
-  BUILD_DIR_TOOLCHAIN:=$(BUILD_DIR_BASE)/toolchain-$(GNU_TARGET_NAME)
-  TOOLCHAIN_DIR:=$(TOPDIR)/staging_dir/toolchain-$(GNU_TARGET_NAME)
-  PACKAGE_DIR:=$(BIN_DIR)/packages
+  LIBC:=$(call qstrip,$(CONFIG_LIBC))
+  TARGET_DIR_NAME:=target-$(GNU_TARGET_NAME)_$(LIBC)$(if $(BUILD_SUFFIX),_$(BUILD_SUFFIX))
+  TOOLCHAIN_DIR_NAME:=toolchain-$(GNU_TARGET_NAME)
 endif
+
+ifeq ($(or $(CONFIG_EXTERNAL_TOOLCHAIN),$(CONFIG_TARGET_uml)),)
+  iremap = -f$(if $(CONFIG_REPRODUCIBLE_DEBUG_INFO),file,macro)-prefix-map=$(1)=$(2)
+endif
+
+PACKAGE_DIR:=$(BIN_DIR)/packages
+PACKAGE_DIR_ALL:=$(TOPDIR)/staging_dir/packages/$(BOARD)
+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-$(BOARD)
 STAGING_DIR_ROOT:=$(STAGING_DIR)/root-$(BOARD)
-BUILD_LOG_DIR:=$(TOPDIR)/logs
+STAGING_DIR_IMAGE:=$(STAGING_DIR)/image
+BUILD_LOG_DIR:=$(if $(call qstrip,$(CONFIG_BUILD_LOG_DIR)),$(call qstrip,$(CONFIG_BUILD_LOG_DIR)),$(TOPDIR)/logs)
 PKG_INFO_DIR := $(STAGING_DIR)/pkginfo
 
-TARGET_PATH:=$(STAGING_DIR_HOST)/bin:$(subst $(space),:,$(filter-out .,$(filter-out ./,$(subst :,$(space),$(PATH)))))
-TARGET_CFLAGS:=$(TARGET_OPTIMIZATION)$(if $(CONFIG_DEBUG), -g3) $(EXTRA_OPTIMIZATION)
+BUILD_DIR_HOST:=$(if $(IS_PACKAGE_BUILD),$(BUILD_DIR_BASE)/hostpkg,$(BUILD_DIR_BASE)/host)
+STAGING_DIR_HOST:=$(abspath $(STAGING_DIR)/../host)
+STAGING_DIR_HOSTPKG:=$(abspath $(STAGING_DIR)/../hostpkg)
+
+TARGET_PATH:=$(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$(STAGING_DIR)/include
-TARGET_LDFLAGS:=-L$(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 $(LIBGCC_S_PATH)) -lgcc_s)
@@ -128,8 +174,6 @@ else
 LIBGCC_A=$(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
 
 ifeq ($(CONFIG_ARCH_64BIT),y)
   LIB_SUFFIX:=64
@@ -140,64 +184,107 @@ ifndef DUMP
     -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 $(if $(CONFIG_GCC_VERSION_4_4)$(CONFIG_GCC_VERSION_4_5),,-Wno-error=unused-but-set-variable)
-    TARGET_CPPFLAGS+= -I$(TOOLCHAIN_DIR)/usr/include -I$(TOOLCHAIN_DIR)/include
-    TARGET_LDFLAGS+= -L$(TOOLCHAIN_DIR)/usr/lib -L$(TOOLCHAIN_DIR)/lib
-    TARGET_PATH:=$(TOOLCHAIN_DIR)/bin:$(TARGET_PATH)
+    TOOLCHAIN_ROOT_DIR:=$(TOPDIR)/staging_dir/$(TOOLCHAIN_DIR_NAME)
+    TOOLCHAIN_BIN_DIRS:=$(TOOLCHAIN_ROOT_DIR)/bin
+    TOOLCHAIN_INC_DIRS:=$(TOOLCHAIN_ROOT_DIR)/usr/include $(TOOLCHAIN_ROOT_DIR)/include
+    TOOLCHAIN_LIB_DIRS:=$(TOOLCHAIN_ROOT_DIR)/usr/lib $(TOOLCHAIN_ROOT_DIR)/lib
+    TARGET_CFLAGS+= -fhonour-copts
+    ifeq ($(CONFIG_USE_MUSL),y)
+      TOOLCHAIN_INC_DIRS+= $(TOOLCHAIN_DIR)/include/fortify
+    endif
   else
     ifeq ($(CONFIG_NATIVE_TOOLCHAIN),)
+      -include $(TOOLCHAIN_DIR)/info.mk
       TARGET_CROSS:=$(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
+  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
 endif
-TARGET_PATH_PKG:=$(STAGING_DIR)/host/bin:$(TARGET_PATH)
+
+TARGET_LINKER?=bfd
+TARGET_LDFLAGS+= -fuse-ld=$(TARGET_LINKER)
+
+TARGET_PATH_PKG:=$(STAGING_DIR)/host/bin:$(STAGING_DIR_HOSTPKG)/bin:$(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 ORIG_PATH:=$(if $(ORIG_PATH),$(ORIG_PATH),$(PATH))
 export PATH:=$(TARGET_PATH)
-export STAGING_DIR
+export STAGING_DIR STAGING_DIR_HOST STAGING_DIR_HOSTPKG
 export SH_FUNC:=. $(INCLUDE_DIR)/shell.sh;
 
 PKG_CONFIG:=$(STAGING_DIR_HOST)/bin/pkg-config
 
 export PKG_CONFIG
 
-HOSTCC:=gcc
-HOSTCXX:=g++
-HOST_CPPFLAGS:=-I$(STAGING_DIR_HOST)/include
+HOSTCC:=$(STAGING_DIR_HOST)/bin/gcc
+HOSTCXX:=$(STAGING_DIR_HOST)/bin/g++
+HOST_CPPFLAGS:=-I$(STAGING_DIR_HOST)/include $(if $(IS_PACKAGE_BUILD),-I$(STAGING_DIR_HOSTPKG)/include -I$(STAGING_DIR)/host/include)
+HOST_CXXFLAGS:=
 HOST_CFLAGS:=-O2 $(HOST_CPPFLAGS)
-HOST_LDFLAGS:=-L$(STAGING_DIR_HOST)/lib
+HOST_LDFLAGS:=-L$(STAGING_DIR_HOST)/lib $(if $(IS_PACKAGE_BUILD),-L$(STAGING_DIR_HOSTPKG)/lib -L$(STAGING_DIR)/host/lib)
 
+BUILD_KEY=$(TOPDIR)/key-build
+
+FAKEROOT:=$(STAGING_DIR_HOST)/bin/fakeroot
+
+TARGET_AR:=$(TARGET_CROSS)gcc-ar
+TARGET_RANLIB:=$(TARGET_CROSS)gcc-ranlib
+TARGET_NM:=$(TARGET_CROSS)gcc-nm
 TARGET_CC:=$(TARGET_CROSS)gcc
-TARGET_AR:=$(TARGET_CROSS)ar
-TARGET_RANLIB:=$(TARGET_CROSS)ranlib
 TARGET_CXX:=$(TARGET_CROSS)g++
+TARGET_LD:=$(TARGET_CROSS)ld.$(TARGET_LINKER)
 KPATCH:=$(SCRIPT_DIR)/patch-kernel.sh
+FILECMD:=$(STAGING_DIR_HOST)/bin/file
 SED:=$(STAGING_DIR_HOST)/bin/sed -i -e
+ESED:=$(STAGING_DIR_HOST)/bin/sed -E -i -e
+MKHASH:=$(STAGING_DIR_HOST)/bin/mkhash
+# MKHASH is used in /scripts, so we export it here.
+export MKHASH
 CP:=cp -fpR
 LN:=ln -sf
 XARGS:=xargs -r
 
+BASH:=bash
+TAR:=tar
+FIND:=find
+PATCH:=patch
+PYTHON:=python3
+
+ifeq ($(HOST_OS),Darwin)
+  TRUE:=/usr/bin/env gtrue
+  FALSE:=/usr/bin/env gfalse
+else
+  TRUE:=/usr/bin/env true
+  FALSE:=/usr/bin/env false
+endif
+
 INSTALL_BIN:=install -m0755
+INSTALL_SUID:=install -m4755
 INSTALL_DIR:=install -d -m0755
 INSTALL_DATA:=install -m0644
 INSTALL_CONF:=install -m0600
@@ -209,23 +296,27 @@ HOSTCXX_NOCACHE:=$(HOSTCXX)
 export TARGET_CC_NOCACHE
 export TARGET_CXX_NOCACHE
 export HOSTCC_NOCACHE
+export HOSTCXX_NOCACHE
 
 ifneq ($(CONFIG_CCACHE),)
-  TARGET_CC:= ccache_cc
-  TARGET_CXX:= ccache_cxx
+  TARGET_CC:= ccache $(TARGET_CC)
+  TARGET_CXX:= ccache $(TARGET_CXX)
   HOSTCC:= ccache $(HOSTCC)
   HOSTCXX:= ccache $(HOSTCXX)
+  export CCACHE_BASEDIR:=$(TOPDIR)
+  export CCACHE_DIR:=$(if $(call qstrip,$(CONFIG_CCACHE_DIR)),$(call qstrip,$(CONFIG_CCACHE_DIR)),$(TOPDIR)/.ccache)
+  export CCACHE_COMPILERCHECK:=%compiler% -dumpmachine; %compiler% -dumpversion
 endif
 
 TARGET_CONFIGURE_OPTS = \
-  AR=$(TARGET_CROSS)ar \
+  AR="$(TARGET_AR)" \
   AS="$(TARGET_CC) -c $(TARGET_ASFLAGS)" \
-  LD=$(TARGET_CROSS)ld \
-  NM=$(TARGET_CROSS)nm \
+  LD="$(TARGET_LD)" \
+  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=$(TARGET_CROSS)objdump \
@@ -240,24 +331,26 @@ else
     STRIP:=$(TARGET_CROSS)strip $(call qstrip,$(CONFIG_STRIP_ARGS))
   else
     ifneq ($(CONFIG_USE_SSTRIP),)
-      STRIP:=$(STAGING_DIR_HOST)/bin/sstrip
+      STRIP:=$(STAGING_DIR_HOST)/bin/sstrip $(if $(CONFIG_SSTRIP_DISCARD_TRAILING_ZEROES),-z)
     endif
   endif
-  RSTRIP:= \
+  RSTRIP= \
     export CROSS="$(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="$(STRIP)" \
     STRIP_KMOD="$(SCRIPT_DIR)/strip-kmod.sh" \
+    PATCHELF="$(STAGING_DIR_HOST)/bin/patchelf" \
     $(SCRIPT_DIR)/rstrip.sh
 endif
 
-ifeq ($(CONFIG_ENABLE_LOCALE),true)
-  DISABLE_NLS:=--enable-nls
-else
-  DISABLE_NLS:=--disable-nls
-endif
+NINJA = \
+	MAKEFLAGS="$(MAKE_JOBSERVER)" \
+	$(STAGING_DIR_HOST)/bin/ninja \
+		$(if $(findstring c,$(OPENWRT_VERBOSE)),-v) \
+		$(if $(MAKE_JOBSERVER),,-j1)
 
 ifeq ($(CONFIG_IPV6),y)
   DISABLE_IPV6:=
@@ -265,38 +358,37 @@ else
   DISABLE_IPV6:=--disable-ipv6
 endif
 
-ifeq ($(CONFIG_TAR_VERBOSITY),y)
-  TAR_OPTIONS:=-xvf -
-else
-  TAR_OPTIONS:=-xf -
-endif
+TAR_OPTIONS:=-xf -
 
 ifeq ($(CONFIG_BUILD_LOG),y)
   BUILD_LOG:=1
 endif
 
+export BISON_PKGDATADIR:=$(STAGING_DIR_HOST)/share/bison
+export HOST_GNULIB_SRCDIR:=$(STAGING_DIR_HOST)/share/gnulib
+export M4:=$(STAGING_DIR_HOST)/bin/m4
+
 define shvar
 V_$(subst .,_,$(subst -,_,$(subst /,_,$(1))))
 endef
 
 define shexport
-$(call shvar,$(1))=$$(call $(1))
-export $(call shvar,$(1))
-endef
-
-define include_mk
-$(eval -include $(if $(DUMP),,$(STAGING_DIR)/mk/$(strip $(1))))
+export $(call shvar,$(1))=$$(call $(1))
 endef
 
 # Execute commands under flock
 # $(1) => The shell expression.
 # $(2) => The lock name. If not given, the global lock will be used.
-define locked
+ifneq ($(wildcard $(STAGING_DIR_HOST)/bin/flock),)
+  define locked
 	SHELL= \
-	$(STAGING_DIR_HOST)/bin/flock \
+	flock \
 		$(TMP_DIR)/.$(if $(2),$(strip $(2)),global).flock \
 		-c '$(subst ','\'',$(1))'
-endef
+  endef
+else
+  locked=$(1)
+endif
 
 # Recursively copy paths into another directory, purge dangling
 # symlinks before.
@@ -316,13 +408,52 @@ define file_copy
 	$(CP) $(1) $(2)
 endef
 
+# Calculate sha256sum of any plain file within a given directory
+# $(1) => Input directory
+# $(2) => If set, recurse into subdirectories
+define sha256sums
+	(cd $(1); find . $(if $(2),,-maxdepth 1) -type f -not -name 'sha256sums' -printf "%P\n" | sort | \
+		xargs -r $(MKHASH) -n sha256 | sed -ne 's!^\(.*\) \(.*\)$$!\1 *\2!p' > sha256sums)
+endef
+
 # file extension
 ext=$(word $(words $(subst ., ,$(1))),$(subst ., ,$(1)))
 
+# Count Git commits of a package
+# $(1) => if non-empty: count commits since last ": [uU]pdate to " or ": [bB]ump to " in commit message
+define commitcount
+$(shell \
+  if git log -1 >/dev/null 2>/dev/null; then \
+    if [ -n "$(1)" ]; then \
+      last_bump="$$(git log --pretty=format:'%h %s' . | \
+        grep -m 1 -e ': [uU]pdate to ' -e ': [bB]ump to ' | \
+        cut -f 1 -d ' ')"; \
+    fi; \
+    if [ -n "$$last_bump" ]; then \
+      echo -n $$(($$(git rev-list --count "$$last_bump..HEAD" .) + 1)); \
+    else \
+      git rev-list --count HEAD .; \
+    fi; \
+  else \
+    secs="$$(($(SOURCE_DATE_EPOCH) % 86400))"; \
+    date="$$(date --utc --date="@$(SOURCE_DATE_EPOCH)" "+%y%m%d")"; \
+    printf '%s.%05d' "$$date" "$$secs"; \
+  fi; \
+)
+endef
+
+abi_version_str = $(subst -,,$(subst _,,$(subst .,,$(1))))
+
+COMMITCOUNT = $(if $(DUMP),0,$(call commitcount))
+AUTORELEASE = $(if $(DUMP),0,$(call commitcount,1))
+
 all:
 FORCE: ;
 .PHONY: FORCE
 
+check: FORCE
+	@true
+
 val.%:
 	@$(if $(filter undefined,$(origin $*)),\
 		echo "$* undefined" >&2, \