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+# Copyright 2003, 2005, 2007 Dave Abrahams
+# Copyright 2006, 2007 Rene Rivera
+# Copyright 2003, 2004, 2005, 2006 Vladimir Prus
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
+
+# This file is part of Boost Build version 2. You can think of it as forming the
+# main() routine. It is invoked by the bootstrapping code in bootstrap.jam.
+
+import build-request ;
+import builtin ;
+import "class" : new ;
+import errors ;
+import feature ;
+import make ;
+import modules ;
+import os ;
+import path ;
+import project ;
+import property-set ;
+import regex ;
+import sequence ;
+import targets ;
+import toolset ;
+import utility ;
+import version ;
+import virtual-target ;
+import generators ;
+import configure ;
+
+################################################################################
+#
+# Module global data.
+#
+################################################################################
+
+# Shortcut used in this module for accessing used command-line parameters.
+.argv = [ modules.peek : ARGV ] ;
+
+# Flag indicating we should display additional debugging information related to
+# locating and loading Boost Build configuration files.
+.debug-config = [ MATCH ^(--debug-configuration)$ : $(.argv) ] ;
+
+# Legacy option doing too many things, some of which are not even documented.
+# Should be phased out.
+# * Disables loading site and user configuration files.
+# * Disables auto-configuration for toolsets specified explicitly on the
+# command-line.
+# * Causes --toolset command-line options to be ignored.
+# * Prevents the default toolset from being used even if no toolset has been
+# configured at all.
+.legacy-ignore-config = [ MATCH ^(--ignore-config)$ : $(.argv) ] ;
+
+# The cleaning is tricky. Say, if user says 'bjam --clean foo' where 'foo' is a
+# directory, then we want to clean targets which are in 'foo' as well as those
+# in any children Jamfiles under foo but not in any unrelated Jamfiles. To
+# achieve this we collect a list of projects under which cleaning is allowed.
+.project-targets = ;
+
+# Virtual targets obtained when building main targets references on the command
+# line. When running 'bjam --clean main_target' we want to clean only files
+# belonging to that main target so we need to record which targets are produced
+# for it.
+.results-of-main-targets = ;
+
+# Was an XML dump requested?
+.out-xml = [ MATCH ^--out-xml=(.*)$ : $(.argv) ] ;
+
+# Default toolset & version to be used in case no other toolset has been used
+# explicitly by either the loaded configuration files, the loaded project build
+# scripts or an explicit toolset request on the command line. If not specified,
+# an arbitrary default will be used based on the current host OS. This value,
+# while not strictly necessary, has been added to allow testing Boost-Build's
+# default toolset usage functionality.
+.default-toolset = ;
+.default-toolset-version = ;
+
+
+################################################################################
+#
+# Public rules.
+#
+################################################################################
+
+# Returns the property set with the free features from the currently processed
+# build request.
+#
+rule command-line-free-features ( )
+{
+ return $(.command-line-free-features) ;
+}
+
+
+# Returns the location of the build system. The primary use case is building
+# Boost where it is sometimes needed to get the location of other components
+# (e.g. BoostBook files) and it is convenient to use locations relative to the
+# Boost Build path.
+#
+rule location ( )
+{
+ local r = [ modules.binding build-system ] ;
+ return $(r:P) ;
+}
+
+
+# Sets the default toolset & version to be used in case no other toolset has
+# been used explicitly by either the loaded configuration files, the loaded
+# project build scripts or an explicit toolset request on the command line. For
+# more detailed information see the comment related to used global variables.
+#
+rule set-default-toolset ( toolset : version ? )
+{
+ .default-toolset = $(toolset) ;
+ .default-toolset-version = $(version) ;
+}
+
+rule set-pre-build-hook ( function )
+{
+ .pre-build-hook = $(function) ;
+}
+
+rule set-post-build-hook ( function )
+{
+ .post-build-hook = $(function) ;
+}
+
+################################################################################
+#
+# Local rules.
+#
+################################################################################
+
+# Returns actual Jam targets to be used for executing a clean request.
+#
+local rule actual-clean-targets ( )
+{
+ # Construct a list of projects explicitly detected as targets on this build
+ # system run. These are the projects under which cleaning is allowed.
+ for local t in $(targets)
+ {
+ if [ class.is-a $(t) : project-target ]
+ {
+ .project-targets += [ $(t).project-module ] ;
+ }
+ }
+
+ # Construct a list of targets explicitly detected on this build system run
+ # as a result of building main targets.
+ local targets-to-clean ;
+ for local t in $(.results-of-main-targets)
+ {
+ # Do not include roots or sources.
+ targets-to-clean += [ virtual-target.traverse $(t) ] ;
+ }
+ targets-to-clean = [ sequence.unique $(targets-to-clean) ] ;
+
+ local to-clean ;
+ for local t in [ virtual-target.all-targets ]
+ {
+ local p = [ $(t).project ] ;
+
+ # Remove only derived targets.
+ if [ $(t).action ]
+ {
+ if $(t) in $(targets-to-clean) ||
+ [ should-clean-project [ $(p).project-module ] ] = true
+ {
+ to-clean += $(t) ;
+ }
+ }
+ }
+
+ local to-clean-actual ;
+ for local t in $(to-clean)
+ {
+ to-clean-actual += [ $(t).actualize ] ;
+ }
+ return $(to-clean-actual) ;
+}
+
+
+# Given a target id, try to find and return the corresponding target. This is
+# only invoked when there is no Jamfile in ".". This code somewhat duplicates
+# code in project-target.find but we can not reuse that code without a
+# project-targets instance.
+#
+local rule find-target ( target-id )
+{
+ local split = [ MATCH (.*)//(.*) : $(target-id) ] ;
+
+ local pm ;
+ if $(split)
+ {
+ pm = [ project.find $(split[1]) : "." ] ;
+ }
+ else
+ {
+ pm = [ project.find $(target-id) : "." ] ;
+ }
+
+ local result ;
+ if $(pm)
+ {
+ result = [ project.target $(pm) ] ;
+ }
+
+ if $(split)
+ {
+ result = [ $(result).find $(split[2]) ] ;
+ }
+
+ return $(result) ;
+}
+
+
+# Initializes a new configuration module.
+#
+local rule initialize-config-module ( module-name : location ? )
+{
+ project.initialize $(module-name) : $(location) ;
+ if USER_MODULE in [ RULENAMES ]
+ {
+ USER_MODULE $(module-name) ;
+ }
+}
+
+
+# Helper rule used to load configuration files. Loads the first configuration
+# file with the given 'filename' at 'path' into module with name 'module-name'.
+# Not finding the requested file may or may not be treated as an error depending
+# on the must-find parameter. Returns a normalized path to the loaded
+# configuration file or nothing if no file was loaded.
+#
+local rule load-config ( module-name : filename : path + : must-find ? )
+{
+ if $(.debug-config)
+ {
+ ECHO "notice: Searching" "$(path)" "for" "$(module-name)"
+ "configuration file" "$(filename)" "." ;
+ }
+ local where = [ GLOB $(path) : $(filename) ] ;
+ if $(where)
+ {
+ where = [ NORMALIZE_PATH $(where[1]) ] ;
+ if $(.debug-config)
+ {
+ ECHO "notice: Loading" "$(module-name)" "configuration file"
+ "$(filename)" "from" $(where) "." ;
+ }
+
+ # Set source location so that path-constant in config files
+ # with relative paths work. This is of most importance
+ # for project-config.jam, but may be used in other
+ # config files as well.
+ local attributes = [ project.attributes $(module-name) ] ;
+ $(attributes).set source-location : $(where:D) : exact ;
+ modules.load $(module-name) : $(filename) : $(path) ;
+ project.load-used-projects $(module-name) ;
+ }
+ else
+ {
+ if $(must-find)
+ {
+ errors.user-error "Configuration file" "$(filename)" "not found in"
+ "$(path)" "." ;
+ }
+ if $(.debug-config)
+ {
+ ECHO "notice:" "Configuration file" "$(filename)" "not found in"
+ "$(path)" "." ;
+ }
+ }
+ return $(where) ;
+}
+
+
+# Loads all the configuration files used by Boost Build in the following order:
+#
+# -- test-config --
+# Loaded only if specified on the command-line using the --test-config
+# command-line parameter. It is ok for this file not to exist even if specified.
+# If this configuration file is loaded, regular site and user configuration
+# files will not be. If a relative path is specified, file is searched for in
+# the current folder.
+#
+# -- site-config --
+# Always named site-config.jam. Will only be found if located on the system
+# root path (Windows), /etc (non-Windows), user's home folder or the Boost Build
+# path, in that order. Not loaded in case the test-config configuration file is
+# loaded or either the --ignore-site-config or the --ignore-config command-line
+# option is specified.
+#
+# -- user-config --
+# Named user-config.jam by default or may be named explicitly using the
+# --user-config command-line option or the BOOST_BUILD_USER_CONFIG environment
+# variable. If named explicitly the file is looked for from the current working
+# directory and if the default one is used then it is searched for in the
+# user's home directory and the Boost Build path, in that order. Not loaded in
+# case either the test-config configuration file is loaded, --ignore-config
+# command-line option is specified or an empty file name is explicitly
+# specified. If the file name has been given explicitly then the file must
+# exist.
+#
+# Test configurations have been added primarily for use by Boost Build's
+# internal unit testing system but may be used freely in other places as well.
+#
+local rule load-configuration-files
+{
+ # Flag indicating that site configuration should not be loaded.
+ local ignore-site-config =
+ [ MATCH ^(--ignore-site-config)$ : $(.argv) ] ;
+
+ if $(.legacy-ignore-config) && $(.debug-config)
+ {
+ ECHO "notice: Regular site and user configuration files will be ignored" ;
+ ECHO "notice: due to the --ignore-config command-line option." ;
+ }
+
+ initialize-config-module test-config ;
+ local test-config = [ MATCH ^--test-config=(.*)$ : $(.argv) ] ;
+ local uq = [ MATCH \"(.*)\" : $(test-config) ] ;
+ if $(uq)
+ {
+ test-config = $(uq) ;
+ }
+ if $(test-config)
+ {
+ local where =
+ [ load-config test-config : $(test-config:BS) : $(test-config:D) ] ;
+ if $(where)
+ {
+ if $(.debug-config) && ! $(.legacy-ignore-config)
+ {
+ ECHO "notice: Regular site and user configuration files will" ;
+ ECHO "notice: be ignored due to the test configuration being"
+ "loaded." ;
+ }
+ }
+ else
+ {
+ test-config = ;
+ }
+ }
+
+ local user-path = [ os.home-directories ] [ os.environ BOOST_BUILD_PATH ] ;
+ local site-path = /etc $(user-path) ;
+ if [ os.name ] in NT CYGWIN
+ {
+ site-path = [ modules.peek : SystemRoot ] $(user-path) ;
+ }
+
+ if $(ignore-site-config) && !$(.legacy-ignore-config)
+ {
+ ECHO "notice: Site configuration files will be ignored due to the" ;
+ ECHO "notice: --ignore-site-config command-line option." ;
+ }
+
+ initialize-config-module site-config ;
+ if ! $(test-config) && ! $(ignore-site-config) && ! $(.legacy-ignore-config)
+ {
+ load-config site-config : site-config.jam : $(site-path) ;
+ }
+
+ initialize-config-module user-config ;
+ if ! $(test-config) && ! $(.legacy-ignore-config)
+ {
+ local user-config = [ MATCH ^--user-config=(.*)$ : $(.argv) ] ;
+ user-config = $(user-config[-1]) ;
+ user-config ?= [ os.environ BOOST_BUILD_USER_CONFIG ] ;
+ # Special handling for the case when the OS does not strip the quotes
+ # around the file name, as is the case when using Cygwin bash.
+ user-config = [ utility.unquote $(user-config) ] ;
+ local explicitly-requested = $(user-config) ;
+ user-config ?= user-config.jam ;
+
+ if $(user-config)
+ {
+ if $(explicitly-requested)
+ {
+ # Treat explicitly entered user paths as native OS path
+ # references and, if non-absolute, root them at the current
+ # working directory.
+ user-config = [ path.make $(user-config) ] ;
+ user-config = [ path.root $(user-config) [ path.pwd ] ] ;
+ user-config = [ path.native $(user-config) ] ;
+
+ if $(.debug-config)
+ {
+ ECHO "notice: Loading explicitly specified user"
+ "configuration file:" ;
+ ECHO " $(user-config)" ;
+ }
+
+ load-config user-config : $(user-config:BS) : $(user-config:D)
+ : must-exist ;
+ }
+ else
+ {
+ load-config user-config : $(user-config) : $(user-path) ;
+ }
+ }
+ else if $(.debug-config)
+ {
+ ECHO "notice: User configuration file loading explicitly disabled." ;
+ }
+ }
+
+ # We look for project-config.jam from "." upward.
+ # I am not sure this is 100% right decision, we might as well check for
+ # it only alonside the Jamroot file. However:
+ #
+ # - We need to load project-root.jam before Jamroot
+ # - We probably would need to load project-root.jam even if there's no
+ # Jamroot - e.g. to implement automake-style out-of-tree builds.
+ local file = [ path.glob "." : project-config.jam ] ;
+ if ! $(file)
+ {
+ file = [ path.glob-in-parents "." : project-config.jam ] ;
+ }
+ if $(file)
+ {
+ initialize-config-module project-config : $(file:D) ;
+ load-config project-config : project-config.jam : $(file:D) ;
+ }
+}
+
+
+# Autoconfigure toolsets based on any instances of --toolset=xx,yy,...zz or
+# toolset=xx,yy,...zz in the command line. May return additional properties to
+# be processed as if they had been specified by the user.
+#
+local rule process-explicit-toolset-requests
+{
+ local extra-properties ;
+
+ local option-toolsets = [ regex.split-list [ MATCH ^--toolset=(.*)$ : $(.argv) ] : "," ] ;
+ local feature-toolsets = [ regex.split-list [ MATCH ^toolset=(.*)$ : $(.argv) ] : "," ] ;
+
+ for local t in $(option-toolsets) $(feature-toolsets)
+ {
+ # Parse toolset-version/properties.
+ local (t-v,t,v) = [ MATCH (([^-/]+)-?([^/]+)?)/?.* : $(t) ] ;
+ local toolset-version = $((t-v,t,v)[1]) ;
+ local toolset = $((t-v,t,v)[2]) ;
+ local version = $((t-v,t,v)[3]) ;
+
+ if $(.debug-config)
+ {
+ ECHO notice: [cmdline-cfg] Detected command-line request for
+ $(toolset-version): "toolset=" $(toolset) "version="
+ $(version) ;
+ }
+
+ # If the toolset is not known, configure it now.
+ local known ;
+ if $(toolset) in [ feature.values <toolset> ]
+ {
+ known = true ;
+ }
+ if $(known) && $(version) && ! [ feature.is-subvalue toolset
+ : $(toolset) : version : $(version) ]
+ {
+ known = ;
+ }
+ # TODO: we should do 'using $(toolset)' in case no version has been
+ # specified and there are no versions defined for the given toolset to
+ # allow the toolset to configure its default version. For this we need
+ # to know how to detect whether a given toolset has any versions
+ # defined. An alternative would be to do this whenever version is not
+ # specified but that would require that toolsets correctly handle the
+ # case when their default version is configured multiple times which
+ # should be checked for all existing toolsets first.
+
+ if ! $(known)
+ {
+ if $(.debug-config)
+ {
+ ECHO "notice: [cmdline-cfg] toolset $(toolset-version) not"
+ "previously configured; attempting to auto-configure now" ;
+ }
+ toolset.using $(toolset) : $(version) ;
+ }
+ else
+ {
+ if $(.debug-config)
+ {
+ ECHO notice: [cmdline-cfg] toolset $(toolset-version) already
+ configured ;
+ }
+ }
+
+ # Make sure we get an appropriate property into the build request in
+ # case toolset has been specified using the "--toolset=..." command-line
+ # option form.
+ if ! $(t) in $(.argv) && ! $(t) in $(feature-toolsets)
+ {
+ if $(.debug-config)
+ {
+ ECHO notice: [cmdline-cfg] adding toolset=$(t) to the build
+ request. ;
+ }
+ extra-properties += toolset=$(t) ;
+ }
+ }
+
+ return $(extra-properties) ;
+}
+
+
+# Returns 'true' if the given 'project' is equal to or is a (possibly indirect)
+# child to any of the projects requested to be cleaned in this build system run.
+# Returns 'false' otherwise. Expects the .project-targets list to have already
+# been constructed.
+#
+local rule should-clean-project ( project )
+{
+ if ! $(.should-clean-project.$(project))
+ {
+ local r = false ;
+ if $(project) in $(.project-targets)
+ {
+ r = true ;
+ }
+ else
+ {
+ local parent = [ project.attribute $(project) parent-module ] ;
+ if $(parent) && $(parent) != user-config
+ {
+ r = [ should-clean-project $(parent) ] ;
+ }
+ }
+ .should-clean-project.$(project) = $(r) ;
+ }
+
+ return $(.should-clean-project.$(project)) ;
+}
+
+
+################################################################################
+#
+# main()
+# ------
+#
+################################################################################
+
+{
+ if --version in $(.argv)
+ {
+ version.print ;
+ EXIT ;
+ }
+
+ version.verify-engine-version ;
+
+ load-configuration-files ;
+
+ local extra-properties ;
+ # Note that this causes --toolset options to be ignored if --ignore-config
+ # is specified.
+ if ! $(.legacy-ignore-config)
+ {
+ extra-properties = [ process-explicit-toolset-requests ] ;
+ }
+
+
+ # We always load project in "." so that 'use-project' directives have any
+ # chance of being seen. Otherwise, we would not be able to refer to
+ # subprojects using target ids.
+ local current-project ;
+ if [ project.find "." : "." ]
+ {
+ current-project = [ project.target [ project.load "." ] ] ;
+ }
+
+
+ # In case there are no toolsets currently defined makes the build run using
+ # the default toolset.
+ if ! $(.legacy-ignore-config) && ! [ feature.values <toolset> ]
+ {
+ local default-toolset = $(.default-toolset) ;
+ local default-toolset-version = ;
+ if $(default-toolset)
+ {
+ default-toolset-version = $(.default-toolset-version) ;
+ }
+ else
+ {
+ default-toolset = gcc ;
+ if [ os.name ] = NT
+ {
+ default-toolset = msvc ;
+ }
+ else if [ os.name ] = MACOSX
+ {
+ default-toolset = darwin ;
+ }
+ }
+
+ ECHO "warning: No toolsets are configured." ;
+ ECHO "warning: Configuring default toolset" \"$(default-toolset)\". ;
+ ECHO "warning: If the default is wrong, your build may not work correctly." ;
+ ECHO "warning: Use the \"toolset=xxxxx\" option to override our guess." ;
+ ECHO "warning: For more configuration options, please consult" ;
+ ECHO "warning: http://boost.org/boost-build2/doc/html/bbv2/advanced/configuration.html" ;
+
+ toolset.using $(default-toolset) : $(default-toolset-version) ;
+ }
+
+
+ # Parse command line for targets and properties. Note that this requires
+ # that all project files already be loaded.
+ local build-request = [ build-request.from-command-line $(.argv)
+ $(extra-properties) ] ;
+ local target-ids = [ $(build-request).get-at 1 ] ;
+ local properties = [ $(build-request).get-at 2 ] ;
+
+
+ # Expand properties specified on the command line into multiple property
+ # sets consisting of all legal property combinations. Each expanded property
+ # set will be used for a single build run. E.g. if multiple toolsets are
+ # specified then requested targets will be built with each of them.
+ if $(properties)
+ {
+ expanded = [ build-request.expand-no-defaults $(properties) ] ;
+ local xexpanded ;
+ for local e in $(expanded)
+ {
+ xexpanded += [ property-set.create [ feature.split $(e) ] ] ;
+ }
+ expanded = $(xexpanded) ;
+ }
+ else
+ {
+ expanded = [ property-set.empty ] ;
+ }
+
+
+ # Check that we actually found something to build.
+ if ! $(current-project) && ! $(target-ids)
+ {
+ errors.user-error "error: no Jamfile in current directory found, and no"
+ "target references specified." ;
+ EXIT ;
+ }
+
+
+ # Flags indicating that this build system run has been started in order to
+ # clean existing instead of create new targets. Note that these are not the
+ # final flag values as they may get changed later on due to some special
+ # targets being specified on the command line.
+ local clean ; if "--clean" in $(.argv) { clean = true ; }
+ local cleanall ; if "--clean-all" in $(.argv) { cleanall = true ; }
+
+
+ # List of explicitly requested files to build. Any target references read
+ # from the command line parameter not recognized as one of the targets
+ # defined in the loaded Jamfiles will be interpreted as an explicitly
+ # requested file to build. If any such files are explicitly requested then
+ # only those files and the targets they depend on will be built and they
+ # will be searched for among targets that would have been built had there
+ # been no explicitly requested files.
+ local explicitly-requested-files
+
+
+ # List of Boost Build meta-targets, virtual-targets and actual Jam targets
+ # constructed in this build system run.
+ local targets ;
+ local virtual-targets ;
+ local actual-targets ;
+
+
+ # Process each target specified on the command-line and convert it into
+ # internal Boost Build target objects. Detect special clean target. If no
+ # main Boost Build targets were explictly requested use the current project
+ # as the target.
+ for local id in $(target-ids)
+ {
+ if $(id) = clean
+ {
+ clean = true ;
+ }
+ else
+ {
+ local t ;
+ if $(current-project)
+ {
+ t = [ $(current-project).find $(id) : no-error ] ;
+ }
+ else
+ {
+ t = [ find-target $(id) ] ;
+ }
+
+ if ! $(t)
+ {
+ ECHO "notice: could not find main target" $(id) ;
+ ECHO "notice: assuming it is a name of file to create." ;
+ explicitly-requested-files += $(id) ;
+ }
+ else
+ {
+ targets += $(t) ;
+ }
+ }
+ }
+ if ! $(targets)
+ {
+ targets += [ project.target [ project.module-name "." ] ] ;
+ }
+
+ if [ option.get dump-generators : : true ]
+ {
+ generators.dump ;
+ }
+
+ # We wish to put config.log in the build directory corresponding
+ # to Jamroot, so that the location does not differ depending on
+ # directory where we do build. The amount of indirection necessary
+ # here is scary.
+ local first-project = [ $(targets[0]).project ] ;
+ local first-project-root-location = [ $(first-project).get project-root ] ;
+ local first-project-root-module = [ project.load $(first-project-root-location) ] ;
+ local first-project-root = [ project.target $(first-project-root-module) ] ;
+ local first-build-build-dir = [ $(first-project-root).build-dir ] ;
+ configure.set-log-file $(first-build-build-dir)/config.log ;
+
+ # Now that we have a set of targets to build and a set of property sets to
+ # build the targets with, we can start the main build process by using each
+ # property set to generate virtual targets from all of our listed targets
+ # and any of their dependants.
+ for local p in $(expanded)
+ {
+ .command-line-free-features = [ property-set.create [ $(p).free ] ] ;
+ for local t in $(targets)
+ {
+ local g = [ $(t).generate $(p) ] ;
+ if ! [ class.is-a $(t) : project-target ]
+ {
+ .results-of-main-targets += $(g[2-]) ;
+ }
+ virtual-targets += $(g[2-]) ;
+ }
+ }
+
+
+ # Convert collected virtual targets into actual raw Jam targets.
+ for t in $(virtual-targets)
+ {
+ actual-targets += [ $(t).actualize ] ;
+ }
+
+
+ # If XML data output has been requested prepare additional rules and targets
+ # so we can hook into Jam to collect build data while its building and have
+ # it trigger the final XML report generation after all the planned targets
+ # have been built.
+ if $(.out-xml)
+ {
+ # Get a qualified virtual target name.
+ rule full-target-name ( target )
+ {
+ local name = [ $(target).name ] ;
+ local project = [ $(target).project ] ;
+ local project-path = [ $(project).get location ] ;
+ return $(project-path)//$(name) ;
+ }
+
+ # Generate an XML file containing build statistics for each constituent.
+ #
+ rule out-xml ( xml-file : constituents * )
+ {
+ # Prepare valid XML header and footer with some basic info.
+ local nl = "
+" ;
+ local os = [ modules.peek : OS OSPLAT JAMUNAME ] "" ;
+ local timestamp = [ modules.peek : JAMDATE ] ;
+ local cwd = [ PWD ] ;
+ local command = $(.argv) ;
+ local bb-version = [ version.boost-build ] ;
+ .header on $(xml-file) =
+ "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
+ "$(nl)<build format=\"1.0\" version=\"$(bb-version)\">"
+ "$(nl) <os name=\"$(os[1])\" platform=\"$(os[2])\"><![CDATA[$(os[3-]:J= )]]></os>"
+ "$(nl) <timestamp><![CDATA[$(timestamp)]]></timestamp>"
+ "$(nl) <directory><![CDATA[$(cwd)]]></directory>"
+ "$(nl) <command><![CDATA[\"$(command:J=\" \")\"]]></command>"
+ ;
+ .footer on $(xml-file) =
+ "$(nl)</build>" ;
+
+ # Generate the target dependency graph.
+ .contents on $(xml-file) +=
+ "$(nl) <targets>" ;
+ for local t in [ virtual-target.all-targets ]
+ {
+ local action = [ $(t).action ] ;
+ if $(action)
+ # If a target has no action, it has no dependencies.
+ {
+ local name = [ full-target-name $(t) ] ;
+ local sources = [ $(action).sources ] ;
+ local dependencies ;
+ for local s in $(sources)
+ {
+ dependencies += [ full-target-name $(s) ] ;
+ }
+
+ local path = [ $(t).path ] ;
+ local jam-target = [ $(t).actual-name ] ;
+
+ .contents on $(xml-file) +=
+ "$(nl) <target>"
+ "$(nl) <name><![CDATA[$(name)]]></name>"
+ "$(nl) <dependencies>"
+ "$(nl) <dependency><![CDATA[$(dependencies)]]></dependency>"
+ "$(nl) </dependencies>"
+ "$(nl) <path><![CDATA[$(path)]]></path>"
+ "$(nl) <jam-target><![CDATA[$(jam-target)]]></jam-target>"
+ "$(nl) </target>"
+ ;
+ }
+ }
+ .contents on $(xml-file) +=
+ "$(nl) </targets>" ;
+
+ # Build $(xml-file) after $(constituents). Do so even if a
+ # constituent action fails and regenerate the xml on every bjam run.
+ INCLUDES $(xml-file) : $(constituents) ;
+ ALWAYS $(xml-file) ;
+ __ACTION_RULE__ on $(xml-file) = build-system.out-xml.generate-action ;
+ out-xml.generate $(xml-file) ;
+ }
+
+ # The actual build actions are here; if we did this work in the actions
+ # clause we would have to form a valid command line containing the
+ # result of @(...) below (the name of the XML file).
+ #
+ rule out-xml.generate-action ( args * : xml-file
+ : command status start end user system : output ? )
+ {
+ local contents =
+ [ on $(xml-file) return $(.header) $(.contents) $(.footer) ] ;
+ local f = @($(xml-file):E=$(contents)) ;
+ }
+
+ # Nothing to do here; the *real* actions happen in
+ # out-xml.generate-action.
+ actions quietly out-xml.generate { }
+
+ # Define the out-xml file target, which depends on all the targets so
+ # that it runs the collection after the targets have run.
+ out-xml $(.out-xml) : $(actual-targets) ;
+
+ # Set up a global __ACTION_RULE__ that records all the available
+ # statistics about each actual target in a variable "on" the --out-xml
+ # target.
+ #
+ rule out-xml.collect ( xml-file : target : command status start end user
+ system : output ? )
+ {
+ local nl = "
+" ;
+ # Open the action with some basic info.
+ .contents on $(xml-file) +=
+ "$(nl) <action status=\"$(status)\" start=\"$(start)\" end=\"$(end)\" user=\"$(user)\" system=\"$(system)\">" ;
+
+ # If we have an action object we can print out more detailed info.
+ local action = [ on $(target) return $(.action) ] ;
+ if $(action)
+ {
+ local action-name = [ $(action).action-name ] ;
+ local action-sources = [ $(action).sources ] ;
+ local action-props = [ $(action).properties ] ;
+
+ # The qualified name of the action which we created the target.
+ .contents on $(xml-file) +=
+ "$(nl) <name><![CDATA[$(action-name)]]></name>" ;
+
+ # The sources that made up the target.
+ .contents on $(xml-file) +=
+ "$(nl) <sources>" ;
+ for local source in $(action-sources)
+ {
+ local source-actual = [ $(source).actual-name ] ;
+ .contents on $(xml-file) +=
+ "$(nl) <source><![CDATA[$(source-actual)]]></source>" ;
+ }
+ .contents on $(xml-file) +=
+ "$(nl) </sources>" ;
+
+ # The properties that define the conditions under which the
+ # target was built.
+ .contents on $(xml-file) +=
+ "$(nl) <properties>" ;
+ for local prop in [ $(action-props).raw ]
+ {
+ local prop-name = [ MATCH ^<(.*)>$ : $(prop:G) ] ;
+ .contents on $(xml-file) +=
+ "$(nl) <property name=\"$(prop-name)\"><![CDATA[$(prop:G=)]]></property>" ;
+ }
+ .contents on $(xml-file) +=
+ "$(nl) </properties>" ;
+ }
+
+ local locate = [ on $(target) return $(LOCATE) ] ;
+ locate ?= "" ;
+ .contents on $(xml-file) +=
+ "$(nl) <jam-target><![CDATA[$(target)]]></jam-target>"
+ "$(nl) <path><![CDATA[$(target:G=:R=$(locate))]]></path>"
+ "$(nl) <command><![CDATA[$(command)]]></command>"
+ "$(nl) <output><![CDATA[$(output)]]></output>" ;
+ .contents on $(xml-file) +=
+ "$(nl) </action>" ;
+ }
+
+ # When no __ACTION_RULE__ is set "on" a target, the search falls back to
+ # the global module.
+ module
+ {
+ __ACTION_RULE__ = build-system.out-xml.collect
+ [ modules.peek build-system : .out-xml ] ;
+ }
+
+ IMPORT
+ build-system :
+ out-xml.collect
+ out-xml.generate-action
+ : :
+ build-system.out-xml.collect
+ build-system.out-xml.generate-action
+ ;
+ }
+
+ local j = [ option.get jobs ] ;
+ if $(j)
+ {
+ modules.poke : PARALLELISM : $(j) ;
+ }
+
+ local k = [ option.get keep-going : true : true ] ;
+ if $(k) in "on" "yes" "true"
+ {
+ modules.poke : KEEP_GOING : 1 ;
+ }
+ else if $(k) in "off" "no" "false"
+ {
+ modules.poke : KEEP_GOING : 0 ;
+ }
+ else
+ {
+ ECHO "error: Invalid value for the --keep-going option" ;
+ EXIT ;
+ }
+
+ # The 'all' pseudo target is not strictly needed expect in the case when we
+ # use it below but people often assume they always have this target
+ # available and do not declare it themselves before use which may cause
+ # build failures with an error message about not being able to build the
+ # 'all' target.
+ NOTFILE all ;
+
+ # And now that all the actual raw Jam targets and all the dependencies
+ # between them have been prepared all that is left is to tell Jam to update
+ # those targets.
+ if $(explicitly-requested-files)
+ {
+ # Note that this case can not be joined with the regular one when only
+ # exact Boost Build targets are requested as here we do not build those
+ # requested targets but only use them to construct the dependency tree
+ # needed to build the explicitly requested files.
+ UPDATE $(explicitly-requested-files:G=e) $(.out-xml) ;
+ }
+ else if $(cleanall)
+ {
+ UPDATE clean-all ;
+ }
+ else if $(clean)
+ {
+ common.Clean clean : [ actual-clean-targets ] ;
+ UPDATE clean ;
+ }
+ else
+ {
+ configure.print-configure-checks-summary ;
+
+ if $(.pre-build-hook)
+ {
+ $(.pre-build-hook) ;
+ }
+
+ DEPENDS all : $(actual-targets) ;
+ if UPDATE_NOW in [ RULENAMES ]
+ {
+ local ok = [ UPDATE_NOW all $(.out-xml) ] ;
+ if $(.post-build-hook)
+ {
+ $(.post-build-hook) $(ok) ;
+ }
+ # Prevent automatic update of the 'all' target, now that
+ # we have explicitly updated what we wanted.
+ UPDATE ;
+ }
+ else
+ {
+ UPDATE all $(.out-xml) ;
+ }
+ }
+}