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mosesdecoder/jam-files/boost-build/build-system.jam
Kenneth Heafield 9102477a07 bjam for people who don't have it
2011-11-18 13:14:09 -05:00

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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) ;
}
}
}
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