aboutsummaryrefslogtreecommitdiffstats
path: root/tox.ini
AgeCommit message (Expand)AuthorFilesLines
2019-11-29Python3: PIP requirementPeter Mikus1-2/+2
2019-08-16TOX: Make tc_naming voting.Peter Mikus1-2/+1
2019-08-15TOX: DOC verifyPeter Mikus1-1/+8
2019-08-14DO_NOT_MERGE CSIT-1194 - Framework easy pylint improvementsMiroslav Los1-0/+1
2019-07-31TOX: Coverage checkPeter Mikus1-1/+6
2019-07-19TOX: Naming conventionsPeter Mikus1-1/+6
2019-07-02Replace license checker with global noticesVratko Polak1-5/+1
2019-06-28Add copyright checker to toxVratko Polak1-5/+7
2019-04-08Upgrade autogen to NICs and search typesVratko Polak1-0/+2
2019-03-21Update and reorder tox.ini TODOsVratko Polak1-3/+3
2019-03-20Add tox checker for lengths of new lines onlyVratko Polak1-11/+14
2019-02-27Add tox.ini and few checker scriptsVratko Polak1-0/+70
#n445'>445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154
# Copyright (c) 2015 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

#
# Copyright (c) 2007-2008 Eliot Dresselhaus
#
#  Permission is hereby granted, free of charge, to any person obtaining
#  a copy of this software and associated documentation files (the
#  "Software"), to deal in the Software without restriction, including
#  without limitation the rights to use, copy, modify, merge, publish,
#  distribute, sublicense, and/or sell copies of the Software, and to
#  permit persons to whom the Software is furnished to do so, subject to
#  the following conditions:
#
#  The above copyright notice and this permission notice shall be
#  included in all copies or substantial portions of the Software.
#
#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
#  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
#  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
#  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
#  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
#  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
#  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#

######################################################################
# Collect makefile fragments
######################################################################

# Scripts require non-POSIX parts of bash
SHELL := /bin/bash

# Where this makefile lives
MU_BUILD_ROOT_DIR = $(shell pwd)
MU_BUILD_NAME = $(shell basename $(MU_BUILD_ROOT_DIR))

# Search path (e.g. multiple directories) where sources are found.
SOURCE_PATH =

# Pick up user's definitions for variables e.g. SOURCE_PATH, etc.
-include build-config.mk

MU_BUILD_ROOT_NAME = $(shell basename $(MU_BUILD_ROOT_DIR))
MU_BUILD_DATA_DIR_NAME = build-data

ABSOLUTE_SOURCE_PATH = $(foreach d,$(SOURCE_PATH),$(shell cd $(d) && pwd))

SOURCE_PATH_BUILD_ROOT_DIRS = $(addsuffix /$(MU_BUILD_NAME),$(ABSOLUTE_SOURCE_PATH))
SOURCE_PATH_BUILD_DATA_DIRS = $(addsuffix /$(MU_BUILD_DATA_DIR_NAME),$(ABSOLUTE_SOURCE_PATH))

# For tools use build-root as source path, otherwise use given source path
FIND_SOURCE_PATH =						\
  $(if $(is_build_tool),					\
    $(SOURCE_PATH_BUILD_ROOT_DIRS) $(MU_BUILD_ROOT_DIR),	\
    $(SOURCE_PATH_BUILD_DATA_DIRS))

# First search given source path, then default to build-root
FULL_SOURCE_PATH = $(SOURCE_PATH_BUILD_DATA_DIRS) $(MU_BUILD_ROOT_DIR)

# Misc functions
is_in_fn = $(strip $(filter $(1),$(2)))
last_fn = $(lastword $1)
chop_fn = $(wordlist 2,$(words $1),x $1)
uniq_fn = $(strip $(if $1,$(call uniq_fn,$(call chop_fn,$1)) \
            $(if $(filter $(call last_fn,$1),$(call chop_fn,$1)),,$(call last_fn,$1))))
ifdef3_fn = $(if $(patsubst undefined,,$(origin $(1))),$(3),$(2))
ifdef_fn = $(call ifdef3_fn,$(1),$(2),$($(1)))

_mu_debug = $(warning "$(1) = $($(1))")

$(foreach d,$(FIND_SOURCE_PATH),					\
  $(eval _mu_package_mk_in_$(d) = $(shell find $(d)/packages/*.mk 2> /dev/null))	\
  $(eval _mu_srcdirs_in_$(d) =						\
    $(shell find $(d)/..						\
      -maxdepth 1							\
      -type d								\
      -and -not -name ".."						\
      -and -not -name $(MU_BUILD_ROOT_NAME)				\
      -and -not -name $(MU_BUILD_DATA_DIR_NAME)))			\
  $(eval _mu_non_package_files_in_$(d) =				\
    $(shell find $(d)/packages						\
      -type f								\
      -and -not -name '*.mk'						\
      -and -not -name '*~' 2> /dev/null))				\
  $(foreach p,$(patsubst %.mk,%,$(notdir $(_mu_package_mk_in_$(d)))),	\
    $(eval _mu_package_dir_$(p) = $(d))					\
    $(eval _mu_package_mk_$(p) = $(d)/packages/$(p).mk)			\
  )									\
  $(foreach p,$(notdir $(_mu_srcdirs_in_$(d))),				\
    $(eval _mu_package_srcdir_$(p) = $(shell cd $(d)/../$(p) && pwd))	\
  )									\
)

# Find root directory for package based on presence of package .mk
# makefile fragment on source path.
_find_build_data_dir_for_package_fn = $(shell			\
  set -eu$(BUILD_DEBUG) ;					\
  for d in $(FIND_SOURCE_PATH) ; do				\
    f="$${d}/packages/$(1).mk" ;				\
    [[ -f $${f} ]] && echo `cd $${d} && pwd` && exit 0 ;	\
  done ;							\
  echo "")
find_build_data_dir_for_package_fn = $(call ifdef_fn,_mu_package_dir_$(1),)

# dir/PACKAGE
_find_source_fn = $(shell				\
  set -eu$(BUILD_DEBUG) ;				\
  d="$(call find_build_data_dir_for_package_fn,$(1))" ;	\
  [[ -n "$${d}" ]] && d="$${d}/../$(1)" ;		\
  echo "$${d}")
find_source_fn = $(call ifdef3_fn,_mu_package_dir_$(1),,$(_mu_package_dir_$(1))/../$(1))

# Find given FILE in source path as build-data/packages/FILE
find_package_file_fn = $(shell				\
  set -eu$(BUILD_DEBUG) ;				\
  d="$(call find_build_data_dir_for_package_fn,$(1))" ;	\
  [[ -n "$${d}" ]] && d="$${d}/packages/$(2)" ;		\
  [[ -f "$${d}" ]] && echo "$${d}")

# Find first FILE in source path with name PATH/build-data/FILE
find_build_data_file_fn = $(shell				\
  set -eu$(BUILD_DEBUG) ;					\
  for d in $(FIND_SOURCE_PATH) ; do				\
    f="$${d}/$(1)" ;						\
    [[ -f $${f} ]] && echo `cd $${d} && pwd`/$(1) && exit 0 ;	\
  done ;							\
  echo "")

######################################################################
# ARCH, PLATFORM
######################################################################

NATIVE_ARCH = $(shell gcc -dumpmachine | sed -e 's/\([a-zA-Z_0-9]*\)-.*/\1/')

# Find all platforms.mk that we can, including those from build-root
$(foreach d,$(FULL_SOURCE_PATH), \
  $(eval -include $(d)/platforms.mk))

# Platform should be defined somewhere by specifying $($(PLATFORM)_arch)
ARCH = $(strip $($(PLATFORM)_arch))
ifeq ($(ARCH),)
  $(error "Unknown platform `$(PLATFORM)'")
endif

# map e.g. ppc7450 -> ppc
BASIC_ARCH = \
   ${shell case '$(ARCH)' in \
      (native) echo $(NATIVE_ARCH) ;; \
      (i*86*) echo i386 ;; \
      (ppc*|powerpc*) echo ppc ;; \
      (*) echo '$(ARCH)' ;; \
     esac }

# x86_64 can be either 32/64.  set BIACH=32 to get 32 bit libraries.
BIARCH = 64

aarch64_libdir = 64
x86_64_libdir = $(BIARCH)
native_libdir = $($(NATIVE_ARCH)_libdir)

# lib or lib64 depending
arch_lib_dir = lib$($(BASIC_ARCH)_libdir)

# OS to configure for.  configure --host will be set to $(ARCH)-$(OS)
# Allow per-platform overrides

OS = $(strip $($(PLATFORM)_os))
ifeq ($(OS),)
  OS = mu-linux
endif

spu_target = spu
native_target =

is_native = $(if $(ARCH:native=),,true)
not_native = $(if $(ARCH:native=),true,)

ARCH_TARGET_tmp = $(call ifdef_fn,$(ARCH)_target,$(ARCH)-$(OS))
TARGET = $(call ifdef_fn,$(PLATFORM)_target,$(ARCH_TARGET_tmp))
TARGET_PREFIX = $(if $(not_native),$(TARGET)-,)

# CPU microarchitecture detection. 
# Either set <platform>_march in build-data/platforms/<platform>.mk,
# or detect and use the build-host instruction set

MARCH = $(strip $($(PLATFORM)_march))
ifeq ($(MARCH),)
  ifneq ($(wildcard $(TOOL_INSTALL_DIR)/bin/$(TARGET)-gcc),)
    TARGET_GCC = $(TOOL_INSTALL_DIR)/bin/$(TARGET)-gcc
  else ifneq ($(wildcard $(MU_BUILD_ROOT_DIR)/tools/bin/$(TARGET)-gcc),)
    TARGET_GCC = $(MU_BUILD_ROOT_DIR)/tools/bin/$(TARGET)-gcc
  endif
  ifneq ($(TARGET_GCC),)
    MARCH = $(shell $(TARGET_GCC) -Q --help=target -march=native | grep march | sed -e 's/.*march=[[:space:]]*//')
  else
    MARCH = native
  endif
else
  ifeq ($(MARCH),nehalem)
    override MARCH = corei7
  else ifeq ($(MARCH),westmere)
    override MARCH = corei7
  else ifeq ($(MARCH),sandybridge)
    override MARCH = corei7-avx
  else ifeq ($(MARCH),ivybridge)
    override MARCH = core-avx-i
  else ifeq ($(MARCH),haswell)
    override MARCH = core-avx2
  endif
endif
export MARCH

MTUNE = $(strip $($(PLATFORM)_mtune))
ifeq ($(MTUNE),)
  MTUNE = generic
endif

######################################################################
# Generic build stuff
######################################################################

# The package we are currently working on
PACKAGE = $*

# Build/install tags.  This lets you have different CFLAGS/CPPFLAGS/LDFLAGS
# for e.g. debug versus optimized compiles.  Each tag has its own set of build/install
# areas.
TAG = 
TAG_PREFIX = $(if $(TAG),$(TAG)-)

# yes you need the space
tag_var_with_added_space_fn = $(if $($(TAG)_TAG_$(1)),$($(TAG)_TAG_$(1)) )

# TAG=debug for debugging
debug_TAG_CFLAGS = -g -O0 -DCLIB_DEBUG -DFORTIFY_SOURCE=2 -march=$(MARCH) \
		   -fstack-protector-all -fPIC
debug_TAG_LDFLAGS = -g -O0 -DCLIB_DEBUG -DFORTIFY_SOURCE=2 -march=$(MARCH) \
		   -fstack-protector-all -fPIC

BUILD_PREFIX_package = build-$(TAG_PREFIX)
BUILD_PREFIX_tool = build-tool-$(TAG_PREFIX)
INSTALL_PREFIX = install-$(TAG_PREFIX)
IMAGES_PREFIX = images-$(TAG_PREFIX)

# Whether we are building a tool or not
tool_or_package_fn = $(if $(is_build_tool),tool,package)

# Directory where packages are built & installed
BUILD_DIR = $(MU_BUILD_ROOT_DIR)/$(BUILD_PREFIX_$(call tool_or_package_fn))$(ARCH)
INSTALL_DIR = $(MU_BUILD_ROOT_DIR)/$(INSTALL_PREFIX)$(ARCH)

PLATFORM_IMAGE_DIR = $(MU_BUILD_ROOT_DIR)/$(IMAGES_PREFIX)$(PLATFORM)

# $(call VAR,DEFAULT)
override_var_with_default_fn = $(if $($(1)),$($(1)),$(2))

# $(call if_directory_exists_fn,D1,D2) returns D1 if it exists else D2
define if_directory_exists_fn
$(shell if test -d $(1); then echo $(1); else echo $(2); fi)
endef

# $(call if_file_exists_fn,F1,F2) returns F1 if it exists else F2
define if_file_exists_fn
$(shell if test -f $(1); then echo $(1); else echo $(2); fi)
endef

# Default VAR, package specified override of default PACKAGE_VAR
package_var_fn = $(call override_var_with_default_fn,$(1)_$(2),$(1))

package_build_dir_fn = $(call package_var_fn,$(1),build_dir)

package_install_dir_fn = \
  $(if $(is_build_tool),$(TOOL_INSTALL_DIR),$(INSTALL_DIR)/$(call package_build_dir_fn,$(1)))

PACKAGE_BUILD_DIR = \
  $(BUILD_DIR)/$(call package_build_dir_fn,$(PACKAGE))
PACKAGE_INSTALL_DIR = \
  $(call package_install_dir_fn,$(PACKAGE))

# Tools (gcc, binutils, glibc...) are installed here
TOOL_INSTALL_DIR = $(MU_BUILD_ROOT_DIR)/tools

# Target specific tools go here e.g. mu-build/tools/ppc-mu-linux
TARGET_TOOL_INSTALL_DIR = $(TOOL_INSTALL_DIR)/$(TARGET)

# Set BUILD_DEBUG to vx or x enable shell command tracing.
BUILD_DEBUG =

# Message from build system itself (as opposed to make or shell commands)
build_msg_fn = echo "@@@@ $(1) @@@@"

# Allow CCACHE_DIR to be overridden, e.g. in .../build-root/build-config.mk
ifeq ($(CCACHE_DIR),)
  CCACHE_DIR=$(MU_BUILD_ROOT_DIR)/.ccache
endif

# Always prefer our own tools to those installed on system.
# Note: ccache-bin must be before tool bin.
# 
# Removed LD_LIBRARY_PATH from BUILD_ENV (drb, 10/31/17):  
# export LD_LIBRARY_PATH=$(TOOL_INSTALL_DIR)/lib64:$(TOOL_INSTALL_DIR)/lib
#   Reported to cause trouble. Only of historical interest, since we no longer
#   build a full tool chain from source.

BUILD_ENV =										\
    export CCACHE_DIR=$(CCACHE_DIR) ;					\
    export PATH=$(TOOL_INSTALL_DIR)/ccache-bin:$(TOOL_INSTALL_DIR)/bin:$${PATH} ;	\
    export PATH="`echo $${PATH} | sed -e s/[.]://`" ;					\
    $(if $(not_native),export CONFIG_SITE=$(MU_BUILD_ROOT_DIR)/config.site ;,)	\
    set -eu$(BUILD_DEBUG) ;							        \
    set -o pipefail

######################################################################
# Package build generic definitions
######################################################################

package_dir_fn = \
  $(call find_build_data_dir_for_package_fn,$(1))/packages

package_mk_fn = $(call package_dir_fn,$(1))/$(1).mk

# Pick up built-root/pre-package-include.mk for all source directories
$(foreach d,$(SOURCE_PATH_BUILD_ROOT_DIRS),	\
  $(eval -include $(d)/pre-package-include.mk))

$(foreach d,$(addsuffix /packages,$(FIND_SOURCE_PATH)),			\
  $(eval -include $(d)/*.mk)						\
  $(eval ALL_PACKAGES += $(patsubst $(d)/%.mk,%,$(wildcard $(d)/*.mk)))	\
)

# Pick up built-root/post-package-include.mk for all source directories
$(foreach d,$(SOURCE_PATH_BUILD_ROOT_DIRS),	\
  $(eval -include $(d)/post-package-include.mk))

# Linux specific native build tools
NATIVE_TOOLS_LINUX =				\
  e2fsimage					\
  e2fsprogs					\
  fakeroot					\
  jffs2						\
  mkimage					\
  zlib						\
  xz						\
  squashfs

IS_LINUX = $(if $(findstring no,$($(PLATFORM)_uses_linux)),no,yes)

NATIVE_TOOLS_$(IS_LINUX) += $(NATIVE_TOOLS_LINUX)

# only build glibc for linux installs
CROSS_TOOLS_$(IS_LINUX) += glibc gcc

# must be first for bootstrapping
NATIVE_TOOLS = findutils make

# basic tools needed for build system
NATIVE_TOOLS += git automake autoconf libtool texinfo bison flex tar

# needed to compile gcc
NATIVE_TOOLS += mpfr gmp mpc

# Tool to sign binaries
NATIVE_TOOLS += sign

# ccache
NATIVE_TOOLS += ccache

# Tools needed on native host to build for platform
NATIVE_TOOLS += $(call ifdef_fn,$(PLATFORM)_native_tools,)

# Tools for cross-compiling from native -> ARCH
CROSS_TOOLS = binutils gcc-bootstrap gdb

# Tools needed on native host to build for platform
CROSS_TOOLS += $(call ifdef_fn,$(PLATFORM)_cross_tools,)

NATIVE_TOOLS += $(NATIVE_TOOLS_yes)
CROSS_TOOLS += $(CROSS_TOOLS_yes)

timestamp_name_fn = .mu_build_$(1)_timestamp
CONFIGURE_TIMESTAMP = $(call timestamp_name_fn,configure)
BUILD_TIMESTAMP = $(call timestamp_name_fn,build)
INSTALL_TIMESTAMP = $(call timestamp_name_fn,install)

TIMESTAMP_DIR = $(PACKAGE_BUILD_DIR)

find_newer_files_fn =						\
  "`for i in $(2) ; do						\
      [[ -f $$i && $$i -nt $(1) ]] && echo "$$i" && exit 0;	\
    done ;							\
    exit 0;`"

find_filter = -not -name '*~'
find_filter += -and -not -path '*/.git*'
find_filter += -and -not -path '*/.svn*'
find_filter += -and -not -path '*/.CVS*'
find_filter += -and -not -path '*/manual/*'
find_filter += -and -not -path '*/autom4te.cache/*'
find_filter += -and -not -path '*/doc/all-cfg.texi'
find_filter += -and -not -path '*/.mu_build_*'

find_newer_filtered_fn =			\
  (! -f $(1)					\
    || -n $(call find_newer_files_fn,$(1),$(3))	\
    || -n "`find -H $(2)			\
	      -type f				\
              -and -newer $(1)			\
	      -and \( $(4) \)			\
              -print -quit`")

find_newer_fn =							\
  $(call find_newer_filtered_fn,$(1),$(2),$(3),$(find_filter))

######################################################################
# Package dependencies
######################################################################

# This must come before %-configure, %-build, %-install pattern rules
# or else dependencies will not work.

package_dependencies_fn =				\
  $(patsubst %-install, %,				\
    $(filter %-install,$($(1)_configure_depend)))

PACKAGE_DEPENDENCIES = $(call package_dependencies_fn,$(PACKAGE))

# package specific configure, build, install dependencies
add_package_dependency_fn = \
  $(if $($(1)_$(2)_depend), \
       $(eval $(1)-$(2) : $($(1)_$(2)_depend)))

$(foreach p,$(ALL_PACKAGES), \
    $(call add_package_dependency_fn,$(p),configure) \
    $(call add_package_dependency_fn,$(p),build) \
    $(call add_package_dependency_fn,$(p),install))

TARGETS_RESPECTING_DEPENDENCIES = image_install wipe diff push-all pull-all find-source

# carry over packages dependencies to image install, wipe, pull-all, push-all
$(foreach p,$(ALL_PACKAGES),							\
  $(if $($(p)_configure_depend),						\
    $(foreach s,$(TARGETS_RESPECTING_DEPENDENCIES),				\
      $(eval $(p)-$(s):								\
	     $(addsuffix -$(s), $(call package_dependencies_fn,$(p)))))))

# recursively resolve dependencies
resolve_dependencies2_fn = $(strip					\
  $(eval __added = $(filter-out $(4),					\
    $(call uniq_fn,							\
      $(foreach l,$(3),							\
       $(call ifdef3_fn,$(l)$(1),,$(call $(2),$($(l)$(1))))		\
      ))))								\
  $(eval __known = $(call uniq_fn,$(4) $(3) $(__added)))		\
  $(if $(__added),							\
    $(call resolve_dependencies2_fn,$(1),$(2),$(__added),$(__known)),	\
    $(__known))								\
)

resolve_dependencies_null_fn = $(1)

resolve_dependencies_fn = $(call resolve_dependencies2_fn,$(1),resolve_dependencies_null_fn,$(2))

######################################################################
# Package configure
######################################################################

# x86_64 can be either 32/64.  set BIACH=32 to get 32 bit libraries.
BIARCH = 64

x86_64_libdir = $(BIARCH)
native_libdir = $($(NATIVE_ARCH)_libdir)

# lib or lib64 depending
arch_lib_dir = lib$($(BASIC_ARCH)_libdir)

# find dynamic linker as absolute path
TOOL_INSTALL_LIB_DIR=$(TOOL_INSTALL_DIR)/$(TARGET)/$(arch_lib_dir)
DYNAMIC_LINKER=${shell cd $(TOOL_INSTALL_LIB_DIR); echo ld*.so.*}

# Pad dynamic linker & rpath so elftool will never have to change ELF section sizes.
# Yes, this is a kludge.
lots_of_slashes_to_pad_names = "/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////"

# When PLATFORM != native we *always* use our own versions of GLIBC and dynamic linker
# Allow per-platform overrides
CROSS_LDFLAGS = $(strip $($(PLATFORM)_cross_ldflags))
ifeq ($(CROSS_LDFLAGS),)
  CROSS_LDFLAGS =											\
    -Wl,--dynamic-linker=$(lots_of_slashes_to_pad_names)$(TOOL_INSTALL_LIB_DIR)/$(DYNAMIC_LINKER)	\
    -Wl,-rpath -Wl,$(lots_of_slashes_to_pad_names)$(TOOL_INSTALL_LIB_DIR)
endif

cross_ldflags = $(if $(is_native)$(is_build_tool),,$(CROSS_LDFLAGS) )

# $(call installed_libs_fn,PACKAGE)
# Return install library directory for given package.
# Some packages (e.g. openssl) don't install under lib64; instead they use lib
define installed_lib_fn
$(call if_directory_exists_fn,
  $(call package_install_dir_fn,$(1))/$(arch_lib_dir),
  $(call package_install_dir_fn,$(1))/lib)
endef

# Set -L and rpath to point to dependent libraries previously built by us.
installed_libs_fn =					\
  $(foreach i,$(1),					\
    -L$(call installed_lib_fn,$(i))			\
    -Wl,-rpath -Wl,$(call installed_lib_fn,$(i)))

# As above for include files
installed_include_fn = $(call package_install_dir_fn,$(1))/include

installed_includes_fn = $(foreach i,$(1),-I$(call installed_include_fn,$(i)))

# By default package CPPFLAGS (to set include path -I) and LDFLAGS (to set link path -L)
# point at dependent install directories.
DEFAULT_CPPFLAGS = $(call installed_includes_fn, $(PACKAGE_DEPENDENCIES))
DEFAULT_LDFLAGS = $(call installed_libs_fn, $(PACKAGE_DEPENDENCIES))

configure_var_fn = \
  $(call tag_var_with_added_space_fn,$(1))$(call override_var_with_default_fn,$(PACKAGE)_$(1),$(DEFAULT_$(1)))
configure_ldflags_fn = \
  $(cross_ldflags)$(call configure_var_fn,LDFLAGS)

# Allow packages to override CPPFLAGS, CFLAGS, and LDFLAGS
CONFIGURE_ENV =								\
    $(if $(call configure_var_fn,CPPFLAGS),				\
	 CPPFLAGS="$(CPPFLAGS) $(call configure_var_fn,CPPFLAGS)")	\
    $(if $(call configure_var_fn,CFLAGS),				\
	 CFLAGS="$(CFLAGS) $(call configure_var_fn,CFLAGS)")		\
    $(if $(call configure_var_fn,CCASFLAGS),				\
	 CCASFLAGS="$(CCASFLAGS) $(call configure_var_fn,CCASFLAGS)")	\
    $(if $(call configure_ldflags_fn),					\
	 LDFLAGS="$(LDFLAGS) $(call configure_ldflags_fn)")		\
    $(if $($(PACKAGE)_configure_env),$($(PACKAGE)_configure_env))

# only partially used now (used in a few .mk files)
ifeq ($(is_build_tool),yes)
prefix     = $(PACKAGE_INSTALL_DIR)
libdir     = $(PACKAGE_INSTALL_DIR)/$(arch_lib_dir)
libexecdir = $(PACKAGE_INSTALL_DIR)/usr/libexec
DESTDIR     = /
else
# Eventually simplify this with no per package DESTDIR or prefix
ppdMacro = $(if $(PER_PACKAGE_DESTDIR),$(call package_build_dir_fn,$(1)))
pppMacro = $(if $(PER_PACKAGE_PREFIX),$(call package_build_dir_fn,$(1)))
prefixMacro     = $($(PLATFORM)_PREFIX_BASE)/$(pppMacro)
prefix = $(call prefixMacro,$(PACKAGE))
libdir     = $($(PLATFORM)_LIBDIR)
libexecdir = $($(PLATFORM)_LIBEXECDIR)
destdirMacro  = $($(PLATFORM)_DESTDIR_BASE)$(ppdMacro)
DESTDIR  = $(call destdirMacro,$(PACKAGE))
endif

configure_package_gnu =						\
  s=$(call find_source_fn,$(PACKAGE_SOURCE))$(PACKAGE_SUBDIR) ;	\
  if [ ! -f $$s/configure ] ; then				\
    autoreconf -i -f $$s ;					\
  fi ;								\
  cd $(PACKAGE_BUILD_DIR) ;					\
  env $(CONFIGURE_ENV)						\
    $$s/configure						\
      $(if $($(PACKAGE)_configure_host_and_target),		\
           $($(PACKAGE)_configure_host_and_target),		\
           $(if $(not_native),--host=$(TARGET),))		\
      $(if $($(PACKAGE)_configure_prefix),			\
           $($(PACKAGE)_configure_prefix),			\
           --libdir=$(PACKAGE_INSTALL_DIR)/$(arch_lib_dir)	\
           --prefix=$(PACKAGE_INSTALL_DIR))			\
      $($(PACKAGE)_configure_args) 				\
      $($(PACKAGE)_configure_args_$(PLATFORM))

configure_package =							\
  $(call build_msg_fn,Configuring $(PACKAGE) in $(PACKAGE_BUILD_DIR)) ;	\
  mkdir -p $(PACKAGE_BUILD_DIR) ;					\
  $(if $($(PACKAGE)_configure),						\
       $($(PACKAGE)_configure),						\
       $(configure_package_gnu))

# Tools (e.g. gcc, binutils, gdb) required a platform to build for
check_platform =								\
  is_tool="$(is_build_tool)" ;							\
  is_cross_package="$(findstring $(PACKAGE),$(CROSS_TOOLS))" ;			\
  is_arch_native="$(if $(subst native,,$(ARCH)),,yes)" ;			\
  if [ "$${is_tool}" == "yes"							\
       -a "$${is_cross_package}" != ""						\
       -a "$${is_arch_native}" != "" ]; then					\
    $(call build_msg_fn,You must specify PLATFORM for building tools) ;		\
    exit 1 ;									\
  fi ;										\
  : check that platform gcc can be found ;					\
  target_gcc=gcc ;								\
  if [ "$${is_arch_native}" != "yes" ] ; then					\
    target_gcc=$(TARGET)-gcc ;							\
  fi ;										\
  if [ "$${is_tool}" != "yes"							\
       -a "$${is_arch_native}" != "yes"						\
       -a ! -x "`which 2> /dev/null $${target_gcc}`" ] ; then			\
    $(call build_msg_fn,							\
	   No cross-compiler found for platform $(PLATFORM) target $(TARGET);	\
	     try make PLATFORM=$(PLATFORM) install-tools) ;			\
    exit 1 ;									\
  fi
    
configure_check_timestamp =						\
  @$(BUILD_ENV) ;							\
  $(check_platform) ;							\
  mkdir -p $(PACKAGE_BUILD_DIR) ;					\
  mkdir -p $(PACKAGE_INSTALL_DIR) ;					\
  conf="$(TIMESTAMP_DIR)/$(CONFIGURE_TIMESTAMP)" ;			\
  dirs="$(call package_mk_fn,$(PACKAGE))				\
	$(wildcard $(call find_source_fn,				\
	             $(PACKAGE_SOURCE))$(PACKAGE_SUBDIR)/configure)	\
       $(MU_BUILD_ROOT_DIR)/config.site" ;				\
  if [[ $(call find_newer_fn, $${conf}, $${dirs}, $?) ]]; then		\
    $(configure_package) ;						\
    touch $${conf} ;							\
  else									\
    $(call build_msg_fn,Configuring $(PACKAGE): nothing to do) ;	\
  fi

.PHONY: %-configure
%-configure: %-find-source
	$(configure_check_timestamp)

######################################################################
# Package build
######################################################################

# /proc/cpuinfo does not exist on platforms without a /proc and on some
# platforms, notably inside containers, it has no content. In those cases
# we assume there's 1 processor; we use 2*ncpu for the -j option.
# NB: GNU Make 4.2 will let us use '$(file </proc/cpuinfo)' to both test
# for file presence and content; for now this will have to do.
MAKE_PARALLEL_JOBS = -j $(if $(shell [ -f /proc/cpuinfo ] && head /proc/cpuinfo), \
	$(shell grep -c ^processor /proc/cpuinfo), 2)
MAKE_PARALLEL_FLAGS ?= $(if $($(PACKAGE)_make_parallel_fails),,$(MAKE_PARALLEL_JOBS))

# Make command shorthand for packages & tools.
PACKAGE_MAKE =					\
  $(MAKE)					\
    -C $(PACKAGE_BUILD_DIR)			\
    $($(PACKAGE)_make_args)			\
    $(MAKE_PARALLEL_FLAGS)

build_package =							\
  $(call build_msg_fn,Building $* in $(PACKAGE_BUILD_DIR)) ;	\
  mkdir -p $(PACKAGE_BUILD_DIR) ;				\
  cd $(PACKAGE_BUILD_DIR) ;					\
  $(if $($(PACKAGE)_build),					\
       $($(PACKAGE)_build),					\
       $(PACKAGE_MAKE))

build_check_timestamp =									\
  @$(BUILD_ENV) ;									\
  comp="$(TIMESTAMP_DIR)/$(BUILD_TIMESTAMP)" ;						\
  conf="$(TIMESTAMP_DIR)/$(CONFIGURE_TIMESTAMP)" ;					\
  dirs="$(call find_source_fn,$(PACKAGE_SOURCE))					\
	$($(PACKAGE)_build_timestamp_depends)						\
	$(if $(is_build_tool),,$(addprefix $(INSTALL_DIR)/,$(PACKAGE_DEPENDENCIES)))" ;	\
  if [[ $${conf} -nt $${comp}								\
        || $(call find_newer_fn, $${comp}, $${dirs}, $?) ]]; then			\
    $(build_package) ;									\
    touch $${comp} ;									\
  else											\
    $(call build_msg_fn,Building $(PACKAGE): nothing to do) ;				\
  fi

.PHONY: %-build
%-build: %-configure
	$(build_check_timestamp)

.PHONY: %-rebuild
%-rebuild: %-wipe %-build
	@ :

######################################################################
# Package install
######################################################################

install_package =								\
    : by default, for non-tools, remove any previously installed bits ;		\
    $(if $(is_build_tool)$($(PACKAGE)_keep_instdir),				\
         true,									\
         rm -rf $(PACKAGE_INSTALL_DIR));					\
    mkdir -p $(PACKAGE_INSTALL_DIR) ;						\
    $(if $($(PACKAGE)_pre_install),$($(PACKAGE)_pre_install),true);		\
    $(if $($(PACKAGE)_install),							\
	 $($(PACKAGE)_install),							\
	 $(PACKAGE_MAKE)							\
	    $($(PACKAGE)_install_args)						\
	    install) ;								\
    $(if $($(PACKAGE)_post_install),$($(PACKAGE)_post_install),true)

install_check_timestamp =					\
  @$(BUILD_ENV) ;						\
  inst=$(TIMESTAMP_DIR)/$(INSTALL_TIMESTAMP) ;			\
  dirs="$(PACKAGE_BUILD_DIR)					\
	$($(PACKAGE)_install_dependencies)" ;			\
  if [[ $(call find_newer_fn, $${inst}, $${dirs}, $?) ]]; then	\
    $(call build_msg_fn,Installing $(PACKAGE)) ;		\
    $(install_package) ;					\
    touch $${inst} ;						\
  else								\
    $(call build_msg_fn,Installing $(PACKAGE): nothing to do) ;	\
  fi

.PHONY: %-install
%-install: %-build
	$(install_check_timestamp)

######################################################################
# Source code managment
######################################################################

GIT = git

# Maps package name to source directory root.
# Multiple packages may use a single source tree.
# For example, gcc-bootstrap package shares gcc source.
PACKAGE_SOURCE = $(if $($(PACKAGE)_source),$($(PACKAGE)_source),$(PACKAGE))
PACKAGE_SUBDIR = $(if $($(PACKAGE)_configure_subdir),/$($(PACKAGE)_configure_subdir),)

# Use git to download source if directory is not found
find_source_for_package =									\
  @$(BUILD_ENV) ;										\
  $(call build_msg_fn,Arch for platform '$(PLATFORM)' is $(ARCH)) ;				\
  $(call build_msg_fn,Finding source for $(PACKAGE)) ;						\
  s="$(call find_source_fn,$(PACKAGE_SOURCE))" ;						\
  [[ -z "$${s}" ]]										\
    && $(call build_msg_fn,Package $(PACKAGE) not found with path $(SOURCE_PATH))		\
    && exit 1;											\
  mk="$(call find_build_data_dir_for_package_fn,$(PACKAGE_SOURCE))/packages/$(PACKAGE).mk";	\
  $(call build_msg_fn,Makefile fragment found in $${mk}) ;					\
  if [ ! -d "$${s}" ] ; then									\
    d=`dirname $${mk}` ;									\
    i=`cd $${d}/.. && ($(GIT) config remote.origin.url ||					\
                    awk '/URL/ { print $$2; }' .git/remotes/origin)`;				\
    g=`dirname $${i}` ;										\
    $(call build_msg_fn,Fetching source: $(GIT) clone $${g}/$(PACKAGE_SOURCE) $$s) ;		\
    if ! $(GIT) clone $${g}/$(PACKAGE_SOURCE) $$s; then						\
      $(call build_msg_fn,No source for $(PACKAGE) in $${g});					\
      exit 1;											\
    fi ;											\
    $(call build_msg_fn,Fix file dates in $${g}/$(PACKAGE_SOURCE)) ;					\
    (cd $${s} ; $(MU_BUILD_ROOT_DIR)/autowank --touch) ;					\
  fi ;												\
  s=`cd $${s} && pwd` ;										\
  $(call build_msg_fn,Source found in $${s})

.PHONY: %-find-source
%-find-source:
	$(find_source_for_package)

.PHONY: %-push %-pull %-push-all %-pull-all
%-push %-pull %-push-all %-pull-all:
	@$(BUILD_ENV) ;								\
	push_or_pull=$(patsubst %-all,%,$(subst $(PACKAGE)-,,$@)) ;		\
	$(call build_msg_fn,Git $${push_or_pull} source for $(PACKAGE)) ;	\
	s=$(call find_source_fn,$(PACKAGE_SOURCE)) ;				\
	if [ "x$$s" = "x" ]; then						\
	     $(call build_msg_fn,No source for $(PACKAGE)) ;			\
	     exit 1;								\
	fi ;									\
	cd $$s && $(GIT) $${push_or_pull}

# Pull all packages for platform
.PHONY: pull-all
pull-all:
	@$(BUILD_ENV) ;								\
	$(call build_msg_fn,Git pull build system) ;				\
	for d in $(MU_BUILD_ROOT_DIR)						\
		 $(SOURCE_PATH_BUILD_ROOT_DIRS)					\
	 	 $(SOURCE_PATH_BUILD_DATA_DIRS); do				\
	  $(call build_msg_fn,Git pull $${d}) ;					\
	  pushd $${d} >& /dev/null && $(GIT) pull && popd >& /dev/null ;	\
	done ;									\
	$(call build_msg_fn,Git pull build tools) ;				\
	$(call tool_make_target_fn,pull-all) ;					\
	$(call build_msg_fn,Git pull packages for platform $(PLATFORM)) ;	\
	make PLATFORM=$(PLATFORM) $(patsubst %,%-pull-all,$(ROOT_PACKAGES))

.PHONY: %-diff
%-diff:									
	@$(BUILD_ENV) ;							\
	d=$(call find_source_fn,$(PACKAGE_SOURCE)) ;			\
	$(call build_msg_fn,Git diff $(PACKAGE)) ;			\
	if [ -d $${d}/.git ] ; then 					\
	 cd $${d} && $(GIT) --no-pager diff 2>/dev/null; 		\
        else								\
	 $(call build_msg_fn, $(PACKAGE) not a git directory) ;		\
	fi
            


# generate diffs for everything in source path
.PHONY: diff-all
diff-all:								
	@$(BUILD_ENV) ;							\
	$(call build_msg_fn,Generate diffs) ;				\
	for r in $(ABSOLUTE_SOURCE_PATH); do				\
	  for d in $${r}/* ; do						\
	    if [ -d $${d} ] ; then					\
	      $(call build_msg_fn,Git diff $${d}) ;			\
	      if [ -d $${d}/.git ] ; then				\
		cd $${d} && $(GIT) --no-pager diff 2>/dev/null;		\
	      else							\
		$(call build_msg_fn, $${d} not a git directory) ;	\
	      fi ;							\
	    fi ; 							\
	  done ;							\
	done

######################################################################
# System images
######################################################################

IMAGE_DIR = $(MU_BUILD_ROOT_DIR)/image-$(PLATFORM)

# Reports shared libraries in given directory
find_shared_libs_fn =				\
  find $(1)					\
    -maxdepth 1					\
       -regex '.*/lib[a-z0-9_]+\+?\+?.so'		\
    -o -regex '.*/lib[a-z0-9_]+-[0-9.]+\+?\+?.so'	\
    -o -regex '.*/lib[a-z0-9_]+\+?\+?.so.[0-9.]+'

# By default pick up files from binary directories and /etc.
# Also include shared libraries.
DEFAULT_IMAGE_INCLUDE =					\
  for d in bin sbin libexec				\
           usr/bin usr/sbin usr/libexec			\
           etc; do					\
    [[ -d $$d ]] && echo $$d;				\
  done ;						\
  [[ -d $(arch_lib_dir) ]]				\
    && $(call find_shared_libs_fn,$(arch_lib_dir))

# Define any shell functions needed by install scripts
image_install_functions =			\
  $(foreach p,$(ALL_PACKAGES),			\
    $(if $($(p)_image_install_functions),	\
	 $($(p)_image_install_functions)))

# Should always be over-written by temp dir in %-root-image rule
IMAGE_INSTALL_DIR = $(error you need to set IMAGE_INSTALL_DIR)

image_install_fn =								\
  @$(BUILD_ENV) ;								\
  $(call build_msg_fn,Image-install $(1) for platform $(PLATFORM)) ;		\
  inst_dir=$(IMAGE_INSTALL_DIR) ;						\
  mkdir -p $${inst_dir} ;							\
  cd $(2) ;									\
  : select files to include in image ;						\
  image_include_files="								\
    `$(call ifdef_fn,$(1)_image_include,$(DEFAULT_IMAGE_INCLUDE)) ;		\
     echo "" ;									\
     exit 0 ; `";								\
  : select files regexps to exclude from image ;				\
  image_exclude_files="" ;							\
  if [ ! -z "$($(1)_image_exclude)" ] ; then					\
    image_exclude_files="${image_exclude_files}					\
                         $(patsubst %,--exclude=%,$($(1)_image_exclude))" ;	\
  fi ;										\
  [[ -z "$${image_include_files}" || $${image_include_files} == " " ]]		\
    || tar cf - $${image_include_files} $${image_exclude_files}			\
       | tar xf - -C $${inst_dir} ;						\
  : copy files from copyimg directories on source path if present ;		\
  for build_data_dir in $(SOURCE_PATH_BUILD_DATA_DIRS) ; do			\
    d="$${build_data_dir}/packages/$(1).copyimg" ;				\
    if [ -d "$${d}" ] ; then							\
      env $($(PLATFORM)_copyimg_env)						\
	$(MU_BUILD_ROOT_DIR)/copyimg $${d} $${inst_dir} ;			\
    fi ;									\
  done ;									\
  : run package dependent install script ;					\
  $(if $($(1)_image_install),							\
       $(image_install_functions)						\
       cd $${inst_dir} ;							\
       $($(1)_image_install))

.PHONY: %-image_install
%-image_install: %-install
	$(call image_install_fn,$(PACKAGE),$(PACKAGE_INSTALL_DIR))

basic_system_image_include =					\
  $(call ifdef_fn,$(PLATFORM)_basic_system_image_include, 	\
  echo bin/ldd ;						\
  echo $(arch_lib_dir)/ld*.so* ;				\
  $(call find_shared_libs_fn, $(arch_lib_dir)))

basic_system_image_install =				\
  mkdir -p bin lib mnt proc root sbin sys tmp etc ;	\
  mkdir -p usr usr/{bin,sbin} usr/lib ;			\
  mkdir -p var var/{lib,lock,log,run,tmp} ;		\
  mkdir -p var/lock/subsys var/lib/urandom 

.PHONY: basic_system-image_install
basic_system-image_install: # linuxrc-install
	$(if $(not_native),							\
	     $(call image_install_fn,basic_system,$(TARGET_TOOL_INSTALL_DIR)),)

ROOT_PACKAGES = $(if $($(PLATFORM)_root_packages),$($(PLATFORM)_root_packages),$(default_root_packages))

.PHONY: install-packages
install-packages: $(patsubst %,%-find-source,$(ROOT_PACKAGES))	
	@$(BUILD_ENV) ;							        \
	set -eu$(BUILD_DEBUG) ;							\
	d=$(MU_BUILD_ROOT_DIR)/packages-$(PLATFORM) ;				\
	rm -rf $${d} ;								\
	mkdir -p $${d};								\
	$(MAKE) -C $(MU_BUILD_ROOT_DIR) IMAGE_INSTALL_DIR=$${d}			\
	    $(patsubst %,%-image_install,					\
	      basic_system							\
	      $(ROOT_PACKAGES))	|| exit 1;					\
	$(call build_msg_fn, Relocating ELF executables to run in $${d}) ;	\
	find $${d} -type f							\
	    -exec elftool quiet in '{}' out '{}'				\
		set-interpreter							\
		    $${d}/$(arch_lib_dir)/$(DYNAMIC_LINKER)			\
		set-rpath $${d}/$(arch_lib_dir):$${d}/lib ';' ;			\
	: strip symbols from files ;						\
	if [ $${strip_symbols:-no} = 'yes' ] ; then				\
	    $(call build_msg_fn, Stripping symbols from files) ;		\
	    find $${d} -type f							\
		-exec								\
		  $(TARGET_PREFIX)strip						\
		    --strip-unneeded '{}' ';'					\
		    >& /dev/null ;						\
	else									\
	    $(call build_msg_fn, NOT stripping symbols) ;			\
	fi 

# readonly root squashfs image
# Note: $(call build_msg_fn) does not seem to work inside of fakeroot so we use echo
.PHONY: ro-image
$(PLATFORM_IMAGE_DIR)/ro.img ro-image: $(patsubst %,%-find-source,$(ROOT_PACKAGES))
	@$(BUILD_ENV) ;							\
	d=$(PLATFORM_IMAGE_DIR) ;					\
	mkdir -p $$d;							\
	ro_image=$$d/ro.img ;						\
	rm -f $${ro_image} ;						\
	tmp_dir="`mktemp -d $$d/ro-image-XXXXXX`" ;			\
	chmod 0755 $${tmp_dir} ;					\
	cd $${tmp_dir} ;						\
	trap "rm -rf $${tmp_dir}" err ;					\
	fakeroot /bin/bash -c "{					\
	  set -eu$(BUILD_DEBUG) ;					\
	  $(MAKE) -C $(MU_BUILD_ROOT_DIR) IMAGE_INSTALL_DIR=$${tmp_dir}	\
	    $(patsubst %,%-image_install,				\
	      basic_system						\
	      $(ROOT_PACKAGES)) ;					\
	  : make dev directory ;					\
	  $(linuxrc_makedev) ;						\
	  echo @@@@ Relocating ELF executables to run in / @@@@ ;	\
	  find $${d} -type f						\
	      -exec elftool quiet in '{}' out '{}'			\
		set-interpreter						\
		    /$(arch_lib_dir)/$(DYNAMIC_LINKER)			\
	        set-rpath /$(arch_lib_dir):/lib ';' ;			\
	  : strip symbols from files ;					\
	  if [ '$${strip_symbols:-yes}' = 'yes' ] ; then		\
	      echo @@@@ Stripping symbols from files @@@@ ;		\
	      find $${tmp_dir} -type f					\
		-exec							\
		  $(TARGET_PREFIX)strip					\
		    --strip-unneeded '{}' ';'				\
		    >& /dev/null ;					\
	  else								\
	      echo @@@@ NOT stripping symbols @@@@ ;			\
	  fi ;								\
	  if [ $${sign_executables:-yes} = 'yes'			\
	       -a -n "$($(PLATFORM)_public_key)" ] ; then		\
	      echo @@@@ Signing executables @@@@ ;			\
	      find $${tmp_dir} -type f					\
		| xargs sign $($(PLATFORM)_public_key)			\
			     $($(PLATFORM)_private_key_passphrase) ;	\
	  fi ;								\
	  : make read-only file system ;				\
	  mksquashfs							\
	    $${tmp_dir} $${ro_image}					\
	    -no-exports -no-progress -no-recovery ;			\
	}" ;								\
	: cleanup tmp directory ;					\
	rm -rf $${tmp_dir}

MKFS_JFFS2_BYTE_ORDER_x86_64 = -l
MKFS_JFFS2_BYTE_ORDER_i686 = -l
MKFS_JFFS2_BYTE_ORDER_ppc = -b
MKFS_JFFS2_BYTE_ORDER_mips = -b
MKFS_JFFS2_BYTE_ORDER_native = $(MKFS_JFFS2_BYTE_ORDER_$(NATIVE_ARCH))

MKFS_JFFS2_SECTOR_SIZE_IN_KBYTES = \
  $(call ifdef_fn,$(PLATFORM)_jffs2_sector_size_in_kbytes,256)

mkfs_fn_jffs2 = mkfs.jffs2				\
  --eraseblock=$(MKFS_JFFS2_SECTOR_SIZE_IN_KBYTES)KiB	\
  --root=$(1) --output=$(2)				\
  $(MKFS_JFFS2_BYTE_ORDER_$(BASIC_ARCH))

# As things stand the actual initrd size parameter
# is set in .../open-repo/build-data/packages/linuxrc.mk.
EXT2_RW_IMAGE_SIZE=notused

mkfs_fn_ext2 = \
  e2fsimage -d $(1) -f $(2) -s $(EXT2_RW_IMAGE_SIZE)

RW_IMAGE_TYPE=jffs2

make_rw_image_fn = \
  $(call mkfs_fn_$(RW_IMAGE_TYPE),$(1),$(2))

rw_image_embed_ro_image_fn =					\
  mkdir -p proc initrd images ro rw union ;			\
  cp $(PLATFORM_IMAGE_DIR)/$(1) images/$(1) ;			\
  md5sum images/$(1) > images/$(1).md5 ;			\
  echo Built by $(LOGNAME) at `date` > images/$(1).stamp ;	\
  mkdir -p changes/$(1)

# make sure RW_IMAGE_TYPE is a type we know how to build
.PHONY: rw-image-check-type
rw-image-check-type:
	@$(BUILD_ENV) ;								\
	if [ -z "$(make_rw_image_fn)" ] ; then					\
	  $(call build_msg_fn,Unknown read/write fs image type;			\
		              try RW_IMAGE_TYPE=ext2 or RW_IMAGE_TYPE=jffs2) ;	\
	  exit 1;								\
	fi

# read write image
.PHONY: rw-image
rw-image: rw-image-check-type ro-image
	@$(BUILD_ENV) ;						\
	d=$(PLATFORM_IMAGE_DIR) ;				\
	mkdir -p $$d ;						\
	rw_image="$$d/rw.$(RW_IMAGE_TYPE)" ;			\
	ro_image="ro.img" ;					\
	rm -f $$rw_image ;					\
	tmp_dir="`mktemp -d $$d/rw-image-XXXXXX`" ;		\
	chmod 0755 $${tmp_dir} ;				\
	cd $${tmp_dir} ;					\
	trap "rm -rf $${tmp_dir}" err ;				\
	fakeroot /bin/bash -c "{				\
	  set -eu$(BUILD_DEBUG) ;				\
	  $(linuxrc_makedev) ;					\
	  $(call rw_image_embed_ro_image_fn,$${ro_image}) ;	\
	  $(call make_rw_image_fn,$${tmp_dir},$${rw_image}) ;	\
	}" ;							\
	: cleanup tmp directory ;				\
	rm -rf $${tmp_dir}

images: linuxrc-install linux-install $(image_extra_dependencies) rw-image
	@$(BUILD_ENV) ;						\
	d=$(PLATFORM_IMAGE_DIR) ;				\
	cd $(BUILD_DIR)/linux-$(PLATFORM) ;			\
	i="" ;							\
	[[ -z $$i && -f bzImage ]] && i=bzImage ;		\
	[[ -z $$i && -f zImage ]] && i=zImage ;			\
	[[ -z $$i && -f linux ]] && i=linux ;			\
	[[ -z $$i && -f vmlinux ]] && i=vmlinux ;		\
	[[ -z $$i ]]						\
	  && $(call build_msg_fn,no linux image to install	\
		in $(BUILD_DIR)/linux-$(PLATFORM))		\
	  && exit 1 ;						\
	cp $$i $$d

######################################################################
# Tool chain build/install
######################################################################

.PHONY: ccache-install
ccache-install:
	$(MAKE) -C $(MU_BUILD_ROOT_DIR)	ccache-build
	mkdir -p $(TOOL_INSTALL_DIR)/ccache-bin
	ln -sf $(MU_BUILD_ROOT_DIR)/build-tool-native/ccache/ccache \
		$(TOOL_INSTALL_DIR)/ccache-bin/$(TARGET_PREFIX)gcc 

TOOL_MAKE = $(MAKE) is_build_tool=yes

tool_make_target_fn = 							\
  $(if $(strip $(NATIVE_TOOLS)),					\
    $(TOOL_MAKE) $(patsubst %,%-$(1),$(NATIVE_TOOLS)) ARCH=native || exit 1 ;) \
  $(TOOL_MAKE) $(patsubst %,%-$(1),$(CROSS_TOOLS))

.PHONY: install-tools
install-tools:
	$(call tool_make_target_fn,install)

.PHONY: bootstrap-tools
bootstrap-tools:
	$(TOOL_MAKE) make-install findutils-install git-install \
	automake-install autoconf-install libtool-install fakeroot-install


######################################################################
# Clean
######################################################################

package_clean_script =							\
  @$(call build_msg_fn, Cleaning $* in $(PACKAGE_INSTALL_DIR)) ;	\
  $(BUILD_ENV) ;							\
  $(if $(is_build_tool),,rm -rf $(PACKAGE_INSTALL_DIR) ;)		\
  rm -rf $(TIMESTAMP_DIR)/$(call timestamp_name_fn,*) ;			\
  $(if $($(PACKAGE)_clean),						\
    $($(PACKAGE)_clean),						\
    $(PACKAGE_MAKE) clean)

.PHONY: %-clean
%-clean:
	$(package_clean_script)

# Wipe e.g. remove build and install directories for packages.
package_wipe_script =											\
  @message=$(if $(is_build_tool),"Wiping build $(PACKAGE)","Wiping build/install $(PACKAGE)") ;		\
  $(call build_msg_fn,$$message) ;									\
  $(BUILD_ENV) ;											\
  rm -rf $(if $(is_build_tool),$(PACKAGE_BUILD_DIR),$(PACKAGE_INSTALL_DIR) $(PACKAGE_BUILD_DIR))

.PHONY: %-wipe
%-wipe:
	$(package_wipe_script)

# Wipe entire build/install area for TAG and PLATFORM
.PHONY: wipe-all
wipe-all:
	@$(call build_msg_fn, Wiping $(BUILD_DIR) $(INSTALL_DIR)) ;	\
	$(BUILD_ENV) ;							\
	rm -rf $(BUILD_DIR) $(INSTALL_DIR)

# Clean everything
distclean:
	rm -rf $(MU_BUILD_ROOT_DIR)/$(BUILD_PREFIX_package)*/
	rm -rf $(MU_BUILD_ROOT_DIR)/$(BUILD_PREFIX_tool)*
	rm -rf $(MU_BUILD_ROOT_DIR)/$(INSTALL_PREFIX)*
	rm -rf $(MU_BUILD_ROOT_DIR)/$(IMAGES_PREFIX)*
	rm -rf $(TOOL_INSTALL_DIR)
	rm -rf $(MU_BUILD_ROOT_DIR)/*.deb
	rm -rf $(MU_BUILD_ROOT_DIR)/*.rpm
	rm -rf $(MU_BUILD_ROOT_DIR)/*.changes
	rm -rf $(MU_BUILD_ROOT_DIR)/python
	if [ -e /usr/bin/dh ];then (cd $(MU_BUILD_ROOT_DIR)/deb/;debian/rules clean); fi
	rm -f $(MU_BUILD_ROOT_DIR)/deb/debian/*.install
	rm -f $(MU_BUILD_ROOT_DIR)/deb/debian/changelog