#
# Copyright (C) 1999-2005 by Erik Andersen <andersen@codepoet.org>
# Copyright (C) 2006-2014 by the Buildroot developers <buildroot@uclibc.org>
-# Copyright (C) 2014-2016 by the Buildroot developers <buildroot@buildroot.org>
+# Copyright (C) 2014-2017 by the Buildroot developers <buildroot@buildroot.org>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# You shouldn't need to mess with anything beyond this point...
#--------------------------------------------------------------
+# Delete default rules. We don't use them. This saves a bit of time.
+.SUFFIXES:
+
# we want bash as shell
SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
else if [ -x /bin/bash ]; then echo /bin/bash; \
else echo sh; fi; fi)
-# Trick for always running with a fixed umask
-UMASK = 0022
-ifneq ($(shell umask),$(UMASK))
+# Set O variable if not already done on the command line;
+# or avoid confusing packages that can use the O=<dir> syntax for out-of-tree
+# build by preventing it from being forwarded to sub-make calls.
+ifneq ("$(origin O)", "command line")
+O := $(CURDIR)/output
+endif
+
+# Check if the current Buildroot execution meets all the pre-requisites.
+# If they are not met, Buildroot will actually do its job in a sub-make meeting
+# its pre-requisites, which are:
+# 1- Permissive enough umask:
+# Wrong or too restrictive umask will prevent Buildroot and packages from
+# creating files and directories.
+# 2- Absolute canonical CWD (i.e. $(CURDIR)):
+# Otherwise, some packages will use CWD as-is, others will compute its
+# absolute canonical path. This makes harder tracking and fixing host
+# machine path leaks.
+# 3- Absolute canonical output location (i.e. $(O)):
+# For the same reason as the one for CWD.
+
+# Remove the trailing '/.' from $(O) as it can be added by the makefile wrapper
+# installed in the $(O) directory.
+# Also remove the trailing '/' the user can set when on the command line.
+override O := $(patsubst %/,%,$(patsubst %.,%,$(O)))
+# Make sure $(O) actually exists before calling realpath on it; this is to
+# avoid empty CANONICAL_O in case on non-existing entry.
+CANONICAL_O := $(shell mkdir -p $(O) >/dev/null 2>&1)$(realpath $(O))
+
+CANONICAL_CURDIR = $(realpath $(CURDIR))
+
+REQ_UMASK = 0022
+
+# Make sure O= is passed (with its absolute canonical path) everywhere the
+# toplevel makefile is called back.
+EXTRAMAKEARGS := O=$(CANONICAL_O)
+
+# Check Buildroot execution pre-requisites here.
+ifneq ($(shell umask):$(CURDIR):$(O),$(REQ_UMASK):$(CANONICAL_CURDIR):$(CANONICAL_O))
.PHONY: _all $(MAKECMDGOALS)
$(MAKECMDGOALS): _all
@:
_all:
- @umask $(UMASK) && $(MAKE) --no-print-directory $(MAKECMDGOALS)
+ @umask $(REQ_UMASK) && \
+ $(MAKE) -C $(CANONICAL_CURDIR) --no-print-directory \
+ $(MAKECMDGOALS) $(EXTRAMAKEARGS)
-else # umask
+else # umask / $(CURDIR) / $(O)
# This is our default rule, so must come first
all:
# Set and export the version string
-export BR2_VERSION := 2016.08-rc1
+export BR2_VERSION := 2017.05-git
+# Actual time the release is cut (for reproducible builds)
+BR2_VERSION_EPOCH = 1488315000
# Save running make version since it's clobbered by the make package
RUNNING_MAKE_VERSION := $(MAKE_VERSION)
noconfig_targets := menuconfig nconfig gconfig xconfig config oldconfig randconfig \
defconfig %_defconfig allyesconfig allnoconfig silentoldconfig release \
randpackageconfig allyespackageconfig allnopackageconfig \
- print-version olddefconfig
+ print-version olddefconfig distclean manual manual-html manual-split-html \
+ manual-pdf manual-text manual-epub
# Some global targets do not trigger a build, but are used to collect
# metadata, or do various checks. When such targets are triggered,
# We're building in two situations: when MAKECMDGOALS is empty
# (default target is to build), or when MAKECMDGOALS contains
# something else than one of the nobuild_targets.
-nobuild_targets := source source-check \
- legal-info external-deps _external-deps \
- clean distclean help
+nobuild_targets := source %-source source-check \
+ legal-info %-legal-info external-deps _external-deps \
+ clean distclean help show-targets graph-depends \
+ %-graph-depends %-show-depends %-show-version \
+ graph-build graph-size list-defconfigs \
+ savedefconfig printvars
ifeq ($(MAKECMDGOALS),)
BR_BUILDING = y
else ifneq ($(filter-out $(nobuild_targets),$(MAKECMDGOALS)),)
BR_BUILDING = y
endif
+# We call make recursively to build packages. The command-line overrides that
+# are passed to Buildroot don't apply to those package build systems. In
+# particular, we don't want to pass down the O=<dir> option for out-of-tree
+# builds, because the value specified on the command line will not be correct
+# for packages.
+MAKEOVERRIDES :=
+
# Include some helper macros and variables
include support/misc/utils.mk
-ifneq ("$(origin O)", "command line")
-O := output
-CONFIG_DIR := $(TOPDIR)
+# Set variables related to in-tree or out-of-tree build.
+# Here, both $(O) and $(CURDIR) are absolute canonical paths.
+ifeq ($(O),$(CURDIR)/output)
+CONFIG_DIR := $(CURDIR)
NEED_WRAPPER =
else
-# other packages might also support Linux-style out of tree builds
-# with the O=<dir> syntax (E.G. BusyBox does). As make automatically
-# forwards command line variable definitions those packages get very
-# confused. Fix this by telling make to not do so
-MAKEOVERRIDES =
-# strangely enough O is still passed to submakes with MAKEOVERRIDES
-# (with make 3.81 atleast), the only thing that changes is the output
-# of the origin function (command line -> environment).
-# Unfortunately some packages don't look at origin (E.G. uClibc 0.9.31+)
-# To really make O go away, we have to override it.
-override O := $(O)
CONFIG_DIR := $(O)
-# we need to pass O= everywhere we call back into the toplevel makefile
-EXTRAMAKEARGS = O=$(O)
NEED_WRAPPER = y
endif
# bash prints the name of the directory on 'cd <dir>' if CDPATH is
# set, so unset it here to not cause problems. Notice that the export
-# line doesn't affect the environment of $(shell ..) calls, so
-# explictly throw away any output from 'cd' here.
+# line doesn't affect the environment of $(shell ..) calls.
export CDPATH :=
-BASE_DIR := $(shell mkdir -p $(O) && cd $(O) >/dev/null && pwd)
+
+BASE_DIR := $(CANONICAL_O)
$(if $(BASE_DIR),, $(error output directory "$(O)" does not exist))
# Handling of BR2_EXTERNAL.
#
# The value of BR2_EXTERNAL is stored in .br-external in the output directory.
-# On subsequent invocations of make, it is read in. It can still be overridden
-# on the command line, therefore the file is re-created every time make is run.
-#
-# When BR2_EXTERNAL is set to an empty value (e.g. explicitly in command
-# line), the .br-external file is removed and we point to
-# support/dummy-external. This makes sure we can unconditionally include the
-# Config.in and external.mk from the BR2_EXTERNAL directory. In this case,
-# override is necessary so the user can clear BR2_EXTERNAL from the command
-# line, but the dummy path is still used internally.
-
-BR2_EXTERNAL_FILE = $(BASE_DIR)/.br-external
+# The location of the external.mk makefile fragments is computed in that file.
+# On subsequent invocations of make, this file is read in. BR2_EXTERNAL can
+# still be overridden on the command line, therefore the file is re-created
+# every time make is run.
+
+BR2_EXTERNAL_FILE = $(BASE_DIR)/.br-external.mk
-include $(BR2_EXTERNAL_FILE)
-ifeq ($(BR2_EXTERNAL),)
- override BR2_EXTERNAL = support/dummy-external
- $(shell rm -f $(BR2_EXTERNAL_FILE))
-else
- _BR2_EXTERNAL = $(shell cd $(BR2_EXTERNAL) >/dev/null 2>&1 && pwd)
- ifeq ($(_BR2_EXTERNAL),)
- $(error BR2_EXTERNAL='$(BR2_EXTERNAL)' does not exist, relative to $(TOPDIR))
- endif
- override BR2_EXTERNAL := $(_BR2_EXTERNAL)
- $(shell echo BR2_EXTERNAL ?= $(BR2_EXTERNAL) > $(BR2_EXTERNAL_FILE))
+$(shell support/scripts/br2-external \
+ -m -o '$(BR2_EXTERNAL_FILE)' $(BR2_EXTERNAL))
+BR2_EXTERNAL_ERROR =
+include $(BR2_EXTERNAL_FILE)
+ifneq ($(BR2_EXTERNAL_ERROR),)
+$(error $(BR2_EXTERNAL_ERROR))
endif
# To make sure that the environment variable overrides the .config option,
LICENSE_FILES_DIR_HOST = $(LEGAL_INFO_DIR)/host-licenses
LEGAL_MANIFEST_CSV_TARGET = $(LEGAL_INFO_DIR)/manifest.csv
LEGAL_MANIFEST_CSV_HOST = $(LEGAL_INFO_DIR)/host-manifest.csv
-LEGAL_LICENSES_TXT_TARGET = $(LEGAL_INFO_DIR)/licenses.txt
-LEGAL_LICENSES_TXT_HOST = $(LEGAL_INFO_DIR)/host-licenses.txt
LEGAL_WARNINGS = $(LEGAL_INFO_DIR)/.warnings
LEGAL_REPORT = $(LEGAL_INFO_DIR)/README
# timezone and locale may affect build output
ifeq ($(BR2_REPRODUCIBLE),y)
-export TZ=UTC
-export LANG=C
-export LC_ALL=C
+export TZ = UTC
+export LANG = C
+export LC_ALL = C
+export GZIP = -n
+BR2_VERSION_GIT_EPOCH = $(shell GIT_DIR=$(TOPDIR)/.git $(GIT) log -1 --format=%at)
+export SOURCE_DATE_EPOCH = $(if $(wildcard $(TOPDIR)/.git),$(BR2_VERSION_GIT_EPOCH),$(BR2_VERSION_EPOCH))
+DEPENDENCIES_HOST_PREREQ += host-fakedate
endif
# To put more focus on warnings, be less verbose as default
HOSTNM := $(shell which $(HOSTNM) || type -p $(HOSTNM) || echo nm)
HOSTOBJCOPY := $(shell which $(HOSTOBJCOPY) || type -p $(HOSTOBJCOPY) || echo objcopy)
HOSTRANLIB := $(shell which $(HOSTRANLIB) || type -p $(HOSTRANLIB) || echo ranlib)
+SED := $(shell which sed || type -p sed) -i -e
export HOSTAR HOSTAS HOSTCC HOSTCXX HOSTLD
export HOSTCC_NOCCACHE HOSTCXX_NOCCACHE
unexport TERMINFO
unexport MACHINE
unexport O
+unexport GCC_COLORS
GNU_HOST_NAME := $(shell support/gnuconfig/config.guess)
-e s/arm.*/arm/ -e s/sa110/arm/ \
-e s/aarch64.*/arm64/ \
-e s/bfin/blackfin/ \
+ -e s/or1k/openrisc/ \
-e s/parisc64/parisc/ \
-e s/powerpc64.*/powerpc/ \
-e s/ppc.*/powerpc/ -e s/mips.*/mips/ \
ZCAT := $(call qstrip,$(BR2_ZCAT))
BZCAT := $(call qstrip,$(BR2_BZCAT))
XZCAT := $(call qstrip,$(BR2_XZCAT))
+LZCAT := $(call qstrip,$(BR2_LZCAT))
TAR_OPTIONS = $(call qstrip,$(BR2_TAR_OPTIONS)) -xf
# packages compiled for the host go here
# Include legacy before the other things, because package .mk files
# may rely on it.
-ifneq ($(BR2_DEPRECATED),y)
include Makefile.legacy
-endif
include package/Makefile.in
+# arch/arch.mk.* must be after package/Makefile.in because it may need to
+# complement variables defined therein, like BR_NO_CHECK_HASH_FOR.
+-include $(wildcard arch/arch.mk.*)
include support/dependencies/dependencies.mk
include toolchain/*.mk
include linux/linux.mk
include fs/common.mk
-include $(BR2_EXTERNAL)/external.mk
+# If using a br2-external tree, the BR2_EXTERNAL_$(NAME)_PATH variables
+# are also present in the .config file. Since .config is included after
+# we defined them in the Makefile, the values for those variables are
+# quoted. We just include the generated Makefile fragment .br2-external.mk
+# a third time, which will set those variables to the un-quoted values.
+include $(BR2_EXTERNAL_FILE)
+
+# Nothing to include if no BR2_EXTERNAL tree in use
+include $(BR2_EXTERNAL_MKS)
# Now we are sure we have all the packages scanned and defined. We now
# check for each package in the list of enabled packages, that all its
$(TARGET_DIR)/usr/lib/pkgconfig $(TARGET_DIR)/usr/share/pkgconfig \
$(TARGET_DIR)/usr/lib/cmake $(TARGET_DIR)/usr/share/cmake
find $(TARGET_DIR)/usr/{lib,share}/ -name '*.cmake' -print0 | xargs -0 rm -f
- find $(TARGET_DIR)/lib $(TARGET_DIR)/usr/lib $(TARGET_DIR)/usr/libexec \
+ find $(TARGET_DIR)/lib/ $(TARGET_DIR)/usr/lib/ $(TARGET_DIR)/usr/libexec/ \
\( -name '*.a' -o -name '*.la' \) -print0 | xargs -0 rm -f
ifneq ($(BR2_PACKAGE_GDB),y)
rm -rf $(TARGET_DIR)/usr/share/gdb
rm -rf $(TARGET_DIR)/usr/info $(TARGET_DIR)/usr/share/info
rm -rf $(TARGET_DIR)/usr/doc $(TARGET_DIR)/usr/share/doc
rm -rf $(TARGET_DIR)/usr/share/gtk-doc
- -rmdir $(TARGET_DIR)/usr/share 2>/dev/null
+ rmdir $(TARGET_DIR)/usr/share 2>/dev/null || true
$(STRIP_FIND_CMD) | xargs -0 $(STRIPCMD) 2>/dev/null || true
- if test -d $(TARGET_DIR)/lib/modules; then \
- find $(TARGET_DIR)/lib/modules -type f -name '*.ko' -print0 | \
- xargs -0 -r $(KSTRIPCMD); fi
# See http://sourceware.org/gdb/wiki/FAQ, "GDB does not see any threads
# besides the one in which crash occurred; or SIGTRAP kills my program when
# I set a breakpoint"
ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
- find $(TARGET_DIR)/lib -type f -name 'libpthread*.so*' | \
+ find $(TARGET_DIR)/lib/ -type f -name 'libpthread*.so*' | \
xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
endif
# Valgrind needs ld.so with enough information, so only strip
# debugging symbols.
- find $(TARGET_DIR)/lib -type f -name 'ld-*.so*' | \
+ find $(TARGET_DIR)/lib/ -type f -name 'ld-*.so*' | \
xargs -r $(STRIPCMD) $(STRIP_STRIP_DEBUG)
test -f $(TARGET_DIR)/etc/ld.so.conf && \
{ echo "ERROR: we shouldn't have a /etc/ld.so.conf file"; exit 1; } || true
@$(call legal-license-file,buildroot,COPYING,COPYING,HOST)
@$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,TARGET)
@$(call legal-manifest,PACKAGE,VERSION,LICENSE,LICENSE FILES,SOURCE ARCHIVE,SOURCE SITE,HOST)
- @$(call legal-manifest,buildroot,$(BR2_VERSION_FULL),GPLv2+,COPYING,not saved,not saved,HOST)
+ @$(call legal-manifest,buildroot,$(BR2_VERSION_FULL),GPL-2.0+,COPYING,not saved,not saved,HOST)
@$(call legal-warning,the Buildroot source code has not been saved)
@cp $(BR2_CONFIG) $(LEGAL_INFO_DIR)/buildroot.config
@$(INSTALL) -d $(GRAPHS_DIR)
@cd "$(CONFIG_DIR)"; \
$(TOPDIR)/support/scripts/graph-depends $(BR2_GRAPH_DEPS_OPTS) \
- -o $(GRAPHS_DIR)/$(@).dot
+ --direct -o $(GRAPHS_DIR)/$(@).dot
dot $(BR2_GRAPH_DOT_OPTS) -T$(BR_GRAPH_OUT) \
-o $(GRAPHS_DIR)/$(@).$(BR_GRAPH_OUT) \
$(GRAPHS_DIR)/$(@).dot
export HOSTCFLAGS
.PHONY: prepare-kconfig
-prepare-kconfig: outputmakefile
+prepare-kconfig: outputmakefile $(BUILD_DIR)/.br2-external.in
$(BUILD_DIR)/buildroot-config/%onf:
mkdir -p $(@D)/lxdialog
KCONFIG_AUTOHEADER=$(BUILD_DIR)/buildroot-config/autoconf.h \
KCONFIG_TRISTATE=$(BUILD_DIR)/buildroot-config/tristate.config \
BR2_CONFIG=$(BR2_CONFIG) \
- BR2_EXTERNAL=$(BR2_EXTERNAL) \
HOST_GCC_VERSION="$(HOSTCC_VERSION)" \
+ BUILD_DIR=$(BUILD_DIR) \
SKIP_LEGACY=
xconfig: $(BUILD_DIR)/buildroot-config/qconf prepare-kconfig
@$$(COMMON_CONFIG_ENV) BR2_DEFCONFIG=$(1)/configs/$$@ \
$$< --defconfig=$(1)/configs/$$@ $$(CONFIG_CONFIG_IN)
endef
-$(eval $(foreach d,$(TOPDIR) $(BR2_EXTERNAL),$(call percent_defconfig,$(d))$(sep)))
+$(eval $(foreach d,$(call reverse,$(TOPDIR) $(BR2_EXTERNAL_DIRS)),$(call percent_defconfig,$(d))$(sep)))
savedefconfig: $(BUILD_DIR)/buildroot-config/conf prepare-kconfig
@$(COMMON_CONFIG_ENV) $< \
$(Q)$(TOPDIR)/support/scripts/mkmakefile $(TOPDIR) $(O)
endif
+# Even though the target is a real file, we mark it as PHONY as we
+# want it to be re-generated each time make is invoked, in case the
+# value of BR2_EXTERNAL is changed.
+.PHONY: $(BUILD_DIR)/.br2-external.in
+$(BUILD_DIR)/.br2-external.in: $(BUILD_DIR)
+ $(Q)support/scripts/br2-external -k -o "$(@)" $(BR2_EXTERNAL)
+
# printvars prints all the variables currently defined in our
# Makefiles. Alternatively, if a non-empty VARS variable is passed,
# only the variables matching the make pattern passed in VARS are
$(sort $(if $(VARS),$(filter $(VARS),$(.VARIABLES)),$(.VARIABLES))), \
$(if $(filter-out environment% default automatic, \
$(origin $V)), \
- $(info $V=$($V) ($(value $V)))))
+ $(if $(QUOTED_VARS),\
+ $(info $V='$(subst ','\'',$(if $(RAW_VARS),$(value $V),$($V)))'), \
+ $(info $V=$(if $(RAW_VARS),$(value $V),$($V))))))
+# ' Syntax colouring...
clean:
rm -rf $(TARGET_DIR) $(BINARIES_DIR) $(HOST_DIR) \
$(LEGAL_INFO_DIR) $(GRAPHS_DIR)
distclean: clean
-ifeq ($(DL_DIR),$(TOPDIR)/dl)
- rm -rf $(DL_DIR)
-endif
-ifeq ($(O),output)
+ifeq ($(O),$(CURDIR)/output)
rm -rf $(O)
endif
- rm -rf $(BR2_CONFIG) $(CONFIG_DIR)/.config.old $(CONFIG_DIR)/..config.tmp \
+ rm -rf $(TOPDIR)/dl $(BR2_CONFIG) $(CONFIG_DIR)/.config.old $(CONFIG_DIR)/..config.tmp \
$(CONFIG_DIR)/.auto.deps $(BR2_EXTERNAL_FILE)
help:
@echo ' <pkg>-depends - Build <pkg>'\''s dependencies'
@echo ' <pkg>-configure - Build <pkg> up to the configure step'
@echo ' <pkg>-build - Build <pkg> up to the build step'
+ @echo ' <pkg>-show-depends - List packages on which <pkg> depends'
+ @echo ' <pkg>-show-rdepends - List packages which have <pkg> as a dependency'
@echo ' <pkg>-graph-depends - Generate a graph of <pkg>'\''s dependencies'
+ @echo ' <pkg>-graph-rdepends - Generate a graph of <pkg>'\''s reverse dependencies'
@echo ' <pkg>-dirclean - Remove <pkg> build directory'
@echo ' <pkg>-reconfigure - Restart the build from the configure step'
@echo ' <pkg>-rebuild - Restart the build from the build step'
@echo ' source-check - check selected packages for valid download URLs'
@echo ' external-deps - list external packages used'
@echo ' legal-info - generate info about license compliance'
+ @echo ' printvars - dump all the internal variables'
@echo
@echo ' make V=0|1 - 0 => quiet build (default), 1 => verbose build'
@echo ' make O=dir - Locate all output files in "dir", including .config'
@echo 'it on-line at http://buildroot.org/docs.html'
@echo
+# List the defconfig files
+# $(1): base directory
+# $(2): br2-external name, empty for bundled
+define list-defconfigs
+ @first=true; \
+ for defconfig in $(1)/configs/*_defconfig; do \
+ [ -f "$${defconfig}" ] || continue; \
+ if $${first}; then \
+ if [ "$(2)" ]; then \
+ printf 'External configs in "$(call qstrip,$(2))":\n'; \
+ else \
+ printf "Built-in configs:\n"; \
+ fi; \
+ first=false; \
+ fi; \
+ defconfig="$${defconfig##*/}"; \
+ printf " %-35s - Build for %s\n" "$${defconfig}" "$${defconfig%_defconfig}"; \
+ done; \
+ $${first} || printf "\n"
+endef
+
+# We iterate over BR2_EXTERNAL_NAMES rather than BR2_EXTERNAL_DIRS,
+# because we want to display the name of the br2-external tree.
list-defconfigs:
- @echo 'Built-in configs:'
- @$(foreach b, $(sort $(notdir $(wildcard $(TOPDIR)/configs/*_defconfig))), \
- printf " %-35s - Build for %s\\n" $(b) $(b:_defconfig=);)
-ifneq ($(wildcard $(BR2_EXTERNAL)/configs/*_defconfig),)
- @echo
- @echo 'User-provided configs:'
- @$(foreach b, $(sort $(notdir $(wildcard $(BR2_EXTERNAL)/configs/*_defconfig))), \
- printf " %-35s - Build for %s\\n" $(b) $(b:_defconfig=);)
-endif
- @echo
+ $(call list-defconfigs,$(TOPDIR))
+ $(foreach name,$(BR2_EXTERNAL_NAMES),\
+ $(call list-defconfigs,$(BR2_EXTERNAL_$(name)_PATH),\
+ $(BR2_EXTERNAL_$(name)_DESC))$(sep))
release: OUT = buildroot-$(BR2_VERSION)
print-version:
@echo $(BR2_VERSION_FULL)
+.gitlab-ci.yml: .gitlab-ci.yml.in configs/*_defconfig
+ (cd configs; LC_ALL=C ls -1 *_defconfig) | sed 's/$$/: *defconfig/' | cat $< - > $@
+
include docs/manual/manual.mk
--include $(BR2_EXTERNAL)/docs/*/*.mk
+-include $(foreach dir,$(BR2_EXTERNAL_DIRS),$(dir)/docs/*/*.mk)
.PHONY: $(noconfig_targets)
-endif #umask
+endif #umask / $(CURDIR) / $(O)
projects / coffee / buildroot.git / blobdiff