package/pkg-download.mk - buildroot - Git at Google

 ################################################################################
 #
 # This file contains the download helpers for the various package
 # infrastructures. It is used to handle downloads from HTTP servers,
 # FTP servers, Git repositories, Subversion repositories, Mercurial
 # repositories, Bazaar repositories, and SCP servers.
 #
 ################################################################################

 # Download method commands
 export WGET := $(call qstrip,$(BR2_WGET))
 export SVN := $(call qstrip,$(BR2_SVN))
 export CVS := $(call qstrip,$(BR2_CVS))
 export BZR := $(call qstrip,$(BR2_BZR))
 export GIT := $(call qstrip,$(BR2_GIT))
 export HG := $(call qstrip,$(BR2_HG))
 export SCP := $(call qstrip,$(BR2_SCP))
 SSH := $(call qstrip,$(BR2_SSH))
 export LOCALFILES := $(call qstrip,$(BR2_LOCALFILES))

 DL_WRAPPER = support/download/dl-wrapper

 # DL_DIR may have been set already from the environment
 ifeq ($(origin DL_DIR),undefined)
 DL_DIR ?= $(call qstrip,$(BR2_DL_DIR))
 ifeq ($(DL_DIR),)
 DL_DIR := $(TOPDIR)/dl
 endif
 else
 # Restore the BR2_DL_DIR that was overridden by the .config file
 BR2_DL_DIR = $(DL_DIR)
 endif

 # ensure it exists and a absolute path
 DL_DIR := $(shell mkdir -p $(DL_DIR) && cd $(DL_DIR) >/dev/null && pwd)

 #
 # URI scheme helper functions
 # Example URIs:
 # * http://www.example.com/dir/file
 # * scp://www.example.com:dir/file (with domainseparator :)
 #
 # geturischeme: http
 geturischeme = $(firstword $(subst ://, ,$(call qstrip,$(1))))
 # stripurischeme: www.example.com/dir/file
 stripurischeme = $(lastword $(subst ://, ,$(call qstrip,$(1))))
 # domain: www.example.com
 domain = $(firstword $(subst $(call domainseparator,$(2)), ,$(call stripurischeme,$(1))))
 # notdomain: dir/file
 notdomain = $(patsubst $(call domain,$(1),$(2))$(call domainseparator,$(2))%,%,$(call stripurischeme,$(1)))
 #
 # default domainseparator is /, specify alternative value as first argument
 domainseparator = $(if $(1),$(1),/)

 # github(user,package,version): returns site of GitHub repository
 github = https://github.com/$(1)/$(2)/archive/$(3)

 # Expressly do not check hashes for those files
 # Exported variables default to immediately expanded in some versions of
 # make, but we need it to be recursively-epxanded, so explicitly assign it.
 export BR_NO_CHECK_HASH_FOR =

 ################################################################################
 # The DOWNLOAD_* helpers are in charge of getting a working copy
 # of the source repository for their corresponding SCM,
 # checking out the requested version / commit / tag, and create an
 # archive out of it. DOWNLOAD_SCP uses scp to obtain a remote file with
 # ssh authentication. DOWNLOAD_WGET is the normal wget-based download
 # mechanism.
 #
 # The SOURCE_CHECK_* helpers are in charge of simply checking that the source
 # is available for download. This can be used to make sure one will be able
 # to get all the sources needed for one's build configuration.
 ################################################################################

 define DOWNLOAD_GIT
 	$(EXTRA_ENV) $(DL_WRAPPER) -b git \
 		-o $(DL_DIR)/$($(PKG)_SOURCE) \
 		$(QUIET) \
 		-- \
 		$($(PKG)_SITE) \
 		$($(PKG)_DL_VERSION) \
 		$($(PKG)_BASE_NAME)
 endef

 # TODO: improve to check that the given PKG_DL_VERSION exists on the remote
 # repository
 define SOURCE_CHECK_GIT
 	$(GIT) ls-remote --heads $($(PKG)_SITE) > /dev/null
 endef

 define DOWNLOAD_BZR
 	$(EXTRA_ENV) $(DL_WRAPPER) -b bzr \
 		-o $(DL_DIR)/$($(PKG)_SOURCE) \
 		$(QUIET) \
 		-- \
 		$($(PKG)_SITE) \
 		$($(PKG)_DL_VERSION) \
 		$($(PKG)_BASE_NAME)
 endef

 define SOURCE_CHECK_BZR
 	$(BZR) ls --quiet $($(PKG)_SITE) > /dev/null
 endef

 define DOWNLOAD_CVS
 	$(EXTRA_ENV) $(DL_WRAPPER) -b cvs \
 		-o $(DL_DIR)/$($(PKG)_SOURCE) \
 		$(QUIET) \
 		-- \
 		$(call stripurischeme,$(call qstrip,$($(PKG)_SITE))) \
 		$($(PKG)_DL_VERSION) \
 		$($(PKG)_RAWNAME) \
 		$($(PKG)_BASE_NAME)
 endef

 # Not all CVS servers support ls/rls, use login to see if we can connect
 define SOURCE_CHECK_CVS
 	$(CVS) -d:pserver:anonymous:@$(call stripurischeme,$(call qstrip,$($(PKG)_SITE))) login
 endef

 define DOWNLOAD_SVN
 	$(EXTRA_ENV) $(DL_WRAPPER) -b svn \
 		-o $(DL_DIR)/$($(PKG)_SOURCE) \
 		$(QUIET) \
 		-- \
 		$($(PKG)_SITE) \
 		$($(PKG)_DL_VERSION) \
 		$($(PKG)_BASE_NAME)
 endef

 define SOURCE_CHECK_SVN
 	$(SVN) ls $($(PKG)_SITE)@$($(PKG)_DL_VERSION) > /dev/null
 endef

 # SCP URIs should be of the form scp://[user@]host:filepath
 # Note that filepath is relative to the user's home directory, so you may want
 # to prepend the path with a slash: scp://[user@]host:/absolutepath
 define DOWNLOAD_SCP
 	$(EXTRA_ENV) $(DL_WRAPPER) -b scp \
 		-o $(DL_DIR)/$(2) \
 		-H $(PKGDIR)/$($(PKG)_RAWNAME).hash \
 		$(QUIET) \
 		-- \
 		'$(call stripurischeme,$(call qstrip,$(1)))'
 endef

 define SOURCE_CHECK_SCP
 	$(SSH) $(call domain,$(1),:) ls '$(call notdomain,$(1),:)' > /dev/null
 endef

 define DOWNLOAD_HG
 	$(EXTRA_ENV) $(DL_WRAPPER) -b hg \
 		-o $(DL_DIR)/$($(PKG)_SOURCE) \
 		$(QUIET) \
 		-- \
 		$($(PKG)_SITE) \
 		$($(PKG)_DL_VERSION) \
 		$($(PKG)_BASE_NAME)
 endef

 # TODO: improve to check that the given PKG_DL_VERSION exists on the remote
 # repository
 define SOURCE_CHECK_HG
 	$(HG) incoming --force -l1 $($(PKG)_SITE) > /dev/null
 endef

 define DOWNLOAD_WGET
 	$(EXTRA_ENV) $(DL_WRAPPER) -b wget \
 		-o $(DL_DIR)/$(2) \
 		-H $(PKGDIR)/$($(PKG)_RAWNAME).hash \
 		$(QUIET) \
 		-- \
 		'$(call qstrip,$(1))'
 endef

 define SOURCE_CHECK_WGET
 	$(WGET) --spider '$(call qstrip,$(1))'
 endef

 define DOWNLOAD_LOCALFILES
 	$(EXTRA_ENV) $(DL_WRAPPER) -b cp \
 		-o $(DL_DIR)/$(2) \
 		-H $(PKGDIR)/$($(PKG)_RAWNAME).hash \
 		$(QUIET) \
 		-- \
 		$(call stripurischeme,$(call qstrip,$(1)))
 endef

 define SOURCE_CHECK_LOCALFILES
 	test -e $(call stripurischeme,$(call qstrip,$(1)))
 endef

 ################################################################################
 # DOWNLOAD -- Download helper. Will try to download source from:
 # 1) BR2_PRIMARY_SITE if enabled
 # 2) Download site, unless BR2_PRIMARY_SITE_ONLY is set
 # 3) BR2_BACKUP_SITE if enabled, unless BR2_PRIMARY_SITE_ONLY is set
 #
 # Argument 1 is the source location
 #
 # E.G. use like this:
 # $(call DOWNLOAD,$(FOO_SITE))
 ################################################################################

 define DOWNLOAD
 	$(call DOWNLOAD_INNER,$(1),$(notdir $(1)),DOWNLOAD)
 endef

 define SOURCE_CHECK
 	$(call DOWNLOAD_INNER,$(1),$(notdir $(1)),SOURCE_CHECK)
 endef

 define DOWNLOAD_INNER
 	$(Q)if test -n "$(call qstrip,$(BR2_PRIMARY_SITE))" ; then \
 		case "$(call geturischeme,$(BR2_PRIMARY_SITE))" in \
 			scp) $(call $(3)_SCP,$(BR2_PRIMARY_SITE)/$(2),$(2)) && exit ;; \
 			*) $(call $(3)_WGET,$(BR2_PRIMARY_SITE)/$(2),$(2)) && exit ;; \
 		esac ; \
 	fi ; \
 	if test "$(BR2_PRIMARY_SITE_ONLY)" = "y" ; then \
 		exit 1 ; \
 	fi ; \
 	if test -n "$(1)" ; then \
 		if test -z "$($(PKG)_SITE_METHOD)" ; then \
 			scheme="$(call geturischeme,$(1))" ; \
 		else \
 			scheme="$($(PKG)_SITE_METHOD)" ; \
 		fi ; \
 		case "$$scheme" in \
 			git) $($(3)_GIT) && exit ;; \
 			svn) $($(3)_SVN) && exit ;; \
 			cvs) $($(3)_CVS) && exit ;; \
 			bzr) $($(3)_BZR) && exit ;; \
 			file) $($(3)_LOCALFILES) && exit ;; \
 			scp) $($(3)_SCP) && exit ;; \
 			hg) $($(3)_HG) && exit ;; \
 			*) $(call $(3)_WGET,$(1),$(2)) && exit ;; \
 		esac ; \
 	fi ; \
 	if test -n "$(call qstrip,$(BR2_BACKUP_SITE))" ; then \
 		$(call $(3)_WGET,$(BR2_BACKUP_SITE)/$(2),$(2)) && exit ; \
 	fi ; \
 	exit 1
 endef
	################################################################################
	#
	# This file contains the download helpers for the various package
	# infrastructures. It is used to handle downloads from HTTP servers,
	# FTP servers, Git repositories, Subversion repositories, Mercurial
	# repositories, Bazaar repositories, and SCP servers.
	#
	################################################################################

	# Download method commands
	export WGET := $(call qstrip,$(BR2_WGET))
	export SVN := $(call qstrip,$(BR2_SVN))
	export CVS := $(call qstrip,$(BR2_CVS))
	export BZR := $(call qstrip,$(BR2_BZR))
	export GIT := $(call qstrip,$(BR2_GIT))
	export HG := $(call qstrip,$(BR2_HG))
	export SCP := $(call qstrip,$(BR2_SCP))
	SSH := $(call qstrip,$(BR2_SSH))
	export LOCALFILES := $(call qstrip,$(BR2_LOCALFILES))

	DL_WRAPPER = support/download/dl-wrapper

	# DL_DIR may have been set already from the environment
	ifeq ($(origin DL_DIR),undefined)
	DL_DIR ?= $(call qstrip,$(BR2_DL_DIR))
	ifeq ($(DL_DIR),)
	DL_DIR := $(TOPDIR)/dl
	endif
	else
	# Restore the BR2_DL_DIR that was overridden by the .config file
	BR2_DL_DIR = $(DL_DIR)
	endif

	# ensure it exists and a absolute path
	DL_DIR := $(shell mkdir -p $(DL_DIR) && cd $(DL_DIR) >/dev/null && pwd)

	#
	# URI scheme helper functions
	# Example URIs:
	# * http://www.example.com/dir/file
	# * scp://www.example.com:dir/file (with domainseparator :)
	#
	# geturischeme: http
	geturischeme = $(firstword $(subst ://, ,$(call qstrip,$(1))))
	# stripurischeme: www.example.com/dir/file
	stripurischeme = $(lastword $(subst ://, ,$(call qstrip,$(1))))
	# domain: www.example.com
	domain = $(firstword $(subst $(call domainseparator,$(2)), ,$(call stripurischeme,$(1))))
	# notdomain: dir/file
	notdomain = $(patsubst $(call domain,$(1),$(2))$(call domainseparator,$(2))%,%,$(call stripurischeme,$(1)))
	#
	# default domainseparator is /, specify alternative value as first argument
	domainseparator = $(if $(1),$(1),/)

	# github(user,package,version): returns site of GitHub repository
	github = https://github.com/$(1)/$(2)/archive/$(3)

	# Expressly do not check hashes for those files
	# Exported variables default to immediately expanded in some versions of
	# make, but we need it to be recursively-epxanded, so explicitly assign it.
	export BR_NO_CHECK_HASH_FOR =

	################################################################################
	# The DOWNLOAD_* helpers are in charge of getting a working copy
	# of the source repository for their corresponding SCM,
	# checking out the requested version / commit / tag, and create an
	# archive out of it. DOWNLOAD_SCP uses scp to obtain a remote file with
	# ssh authentication. DOWNLOAD_WGET is the normal wget-based download
	# mechanism.
	#
	# The SOURCE_CHECK_* helpers are in charge of simply checking that the source
	# is available for download. This can be used to make sure one will be able
	# to get all the sources needed for one's build configuration.
	################################################################################

	define DOWNLOAD_GIT
	$(EXTRA_ENV) $(DL_WRAPPER) -b git \
	-o $(DL_DIR)/$($(PKG)_SOURCE) \
	$(QUIET) \
	-- \
	$($(PKG)_SITE) \
	$($(PKG)_DL_VERSION) \
	$($(PKG)_BASE_NAME)
	endef

	# TODO: improve to check that the given PKG_DL_VERSION exists on the remote
	# repository
	define SOURCE_CHECK_GIT
	$(GIT) ls-remote --heads $($(PKG)_SITE) > /dev/null
	endef

	define DOWNLOAD_BZR
	$(EXTRA_ENV) $(DL_WRAPPER) -b bzr \
	-o $(DL_DIR)/$($(PKG)_SOURCE) \
	$(QUIET) \
	-- \
	$($(PKG)_SITE) \
	$($(PKG)_DL_VERSION) \
	$($(PKG)_BASE_NAME)
	endef

	define SOURCE_CHECK_BZR
	$(BZR) ls --quiet $($(PKG)_SITE) > /dev/null
	endef

	define DOWNLOAD_CVS
	$(EXTRA_ENV) $(DL_WRAPPER) -b cvs \
	-o $(DL_DIR)/$($(PKG)_SOURCE) \
	$(QUIET) \
	-- \
	$(call stripurischeme,$(call qstrip,$($(PKG)_SITE))) \
	$($(PKG)_DL_VERSION) \
	$($(PKG)_RAWNAME) \
	$($(PKG)_BASE_NAME)
	endef

	# Not all CVS servers support ls/rls, use login to see if we can connect
	define SOURCE_CHECK_CVS
	$(CVS) -d:pserver:anonymous:@$(call stripurischeme,$(call qstrip,$($(PKG)_SITE))) login
	endef

	define DOWNLOAD_SVN
	$(EXTRA_ENV) $(DL_WRAPPER) -b svn \
	-o $(DL_DIR)/$($(PKG)_SOURCE) \
	$(QUIET) \
	-- \
	$($(PKG)_SITE) \
	$($(PKG)_DL_VERSION) \
	$($(PKG)_BASE_NAME)
	endef

	define SOURCE_CHECK_SVN
	$(SVN) ls $($(PKG)_SITE)@$($(PKG)_DL_VERSION) > /dev/null
	endef

	# SCP URIs should be of the form scp://[user@]host:filepath
	# Note that filepath is relative to the user's home directory, so you may want
	# to prepend the path with a slash: scp://[user@]host:/absolutepath
	define DOWNLOAD_SCP
	$(EXTRA_ENV) $(DL_WRAPPER) -b scp \
	-o $(DL_DIR)/$(2) \
	-H $(PKGDIR)/$($(PKG)_RAWNAME).hash \
	$(QUIET) \
	-- \
	'$(call stripurischeme,$(call qstrip,$(1)))'
	endef

	define SOURCE_CHECK_SCP
	$(SSH) $(call domain,$(1),:) ls '$(call notdomain,$(1),:)' > /dev/null
	endef

	define DOWNLOAD_HG
	$(EXTRA_ENV) $(DL_WRAPPER) -b hg \
	-o $(DL_DIR)/$($(PKG)_SOURCE) \
	$(QUIET) \
	-- \
	$($(PKG)_SITE) \
	$($(PKG)_DL_VERSION) \
	$($(PKG)_BASE_NAME)
	endef

	# TODO: improve to check that the given PKG_DL_VERSION exists on the remote
	# repository
	define SOURCE_CHECK_HG
	$(HG) incoming --force -l1 $($(PKG)_SITE) > /dev/null
	endef

	define DOWNLOAD_WGET
	$(EXTRA_ENV) $(DL_WRAPPER) -b wget \
	-o $(DL_DIR)/$(2) \
	-H $(PKGDIR)/$($(PKG)_RAWNAME).hash \
	$(QUIET) \
	-- \
	'$(call qstrip,$(1))'
	endef

	define SOURCE_CHECK_WGET
	$(WGET) --spider '$(call qstrip,$(1))'
	endef

	define DOWNLOAD_LOCALFILES
	$(EXTRA_ENV) $(DL_WRAPPER) -b cp \
	-o $(DL_DIR)/$(2) \
	-H $(PKGDIR)/$($(PKG)_RAWNAME).hash \
	$(QUIET) \
	-- \
	$(call stripurischeme,$(call qstrip,$(1)))
	endef

	define SOURCE_CHECK_LOCALFILES
	test -e $(call stripurischeme,$(call qstrip,$(1)))
	endef

	################################################################################
	# DOWNLOAD -- Download helper. Will try to download source from:
	# 1) BR2_PRIMARY_SITE if enabled
	# 2) Download site, unless BR2_PRIMARY_SITE_ONLY is set
	# 3) BR2_BACKUP_SITE if enabled, unless BR2_PRIMARY_SITE_ONLY is set
	#
	# Argument 1 is the source location
	#
	# E.G. use like this:
	# $(call DOWNLOAD,$(FOO_SITE))
	################################################################################

	define DOWNLOAD
	$(call DOWNLOAD_INNER,$(1),$(notdir $(1)),DOWNLOAD)
	endef

	define SOURCE_CHECK
	$(call DOWNLOAD_INNER,$(1),$(notdir $(1)),SOURCE_CHECK)
	endef

	define DOWNLOAD_INNER
	$(Q)if test -n "$(call qstrip,$(BR2_PRIMARY_SITE))" ; then \
	case "$(call geturischeme,$(BR2_PRIMARY_SITE))" in \
	scp) $(call $(3)_SCP,$(BR2_PRIMARY_SITE)/$(2),$(2)) && exit ;; \
	*) $(call $(3)_WGET,$(BR2_PRIMARY_SITE)/$(2),$(2)) && exit ;; \
	esac ; \
	fi ; \
	if test "$(BR2_PRIMARY_SITE_ONLY)" = "y" ; then \
	exit 1 ; \
	fi ; \
	if test -n "$(1)" ; then \
	if test -z "$($(PKG)_SITE_METHOD)" ; then \
	scheme="$(call geturischeme,$(1))" ; \
	else \
	scheme="$($(PKG)_SITE_METHOD)" ; \
	fi ; \
	case "$$scheme" in \
	git) $($(3)_GIT) && exit ;; \
	svn) $($(3)_SVN) && exit ;; \
	cvs) $($(3)_CVS) && exit ;; \
	bzr) $($(3)_BZR) && exit ;; \
	file) $($(3)_LOCALFILES) && exit ;; \
	scp) $($(3)_SCP) && exit ;; \
	hg) $($(3)_HG) && exit ;; \
	*) $(call $(3)_WGET,$(1),$(2)) && exit ;; \
	esac ; \
	fi ; \
	if test -n "$(call qstrip,$(BR2_BACKUP_SITE))" ; then \
	$(call $(3)_WGET,$(BR2_BACKUP_SITE)/$(2),$(2)) && exit ; \
	fi ; \
	exit 1
	endef