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# Status: ported.
# Base revison: 64488
#
# Copyright (c) 2010 Vladimir Prus.
#
# Use, modification and distribution is subject to the Boost Software
# License Version 1.0. (See accompanying file LICENSE_1_0.txt or
# http://www.boost.org/LICENSE_1_0.txt)
# This module defines function to help with two main tasks:
#
# - Discovering build-time configuration for the purposes of adjusting
# build process.
# - Reporting what is built, and how it is configured.
import b2.build.property as property
import b2.build.property_set as property_set
import b2.build.targets
from b2.manager import get_manager
from b2.util.sequence import unique
from b2.util import bjam_signature, value_to_jam
import bjam
import os
__width = 30
def set_width(width):
global __width
__width = 30
__components = []
__built_components = []
__component_logs = {}
__announced_checks = False
__log_file = None
__log_fd = -1
def register_components(components):
"""Declare that the components specified by the parameter exist."""
__components.extend(components)
def components_building(components):
"""Declare that the components specified by the parameters will be build."""
__built_components.extend(components)
def log_component_configuration(component, message):
"""Report something about component configuration that the user should better know."""
__component_logs.setdefault(component, []).append(message)
def log_check_result(result):
global __announced_checks
if not __announced_checks:
print "Performing configuration checks"
__announced_checks = True
print result
def log_library_search_result(library, result):
log_check_result((" - %(library)s : %(result)s" % locals()).rjust(width))
def print_component_configuration():
print "\nComponent configuration:"
for c in __components:
if c in __built_components:
s = "building"
else:
s = "not building"
message = " - %s)" % c
message = message.rjust(__width)
message += " : " + s
for m in __component_logs.get(c, []):
print " -" + m
print ""
__builds_cache = {}
def builds(metatarget_reference, project, ps, what):
# Attempt to build a metatarget named by 'metatarget-reference'
# in context of 'project' with properties 'ps'.
# Returns non-empty value if build is OK.
result = []
existing = __builds_cache.get((what, ps), None)
if existing is None:
result = False
__builds_cache[(what, ps)] = False
targets = b2.build.targets.generate_from_reference(
metatarget_reference, project, ps).targets()
jam_targets = []
for t in targets:
jam_targets.append(t.actualize())
x = (" - %s" % what).rjust(__width)
if bjam.call("UPDATE_NOW", jam_targets, str(__log_fd), "ignore-minus-n"):
__builds_cache[(what, ps)] = True
result = True
log_check_result("%s: yes" % x)
else:
log_check_result("%s: no" % x)
return result
else:
return existing
def set_log_file(log_file_name):
# Called by Boost.Build startup code to specify name of a file
# that will receive results of configure checks. This
# should never be called by users.
global __log_file, __log_fd
dirname = os.path.dirname(log_file_name)
if not os.path.exists(dirname):
os.makedirs(dirname)
# Make sure to keep the file around, so that it's not
# garbage-collected and closed
__log_file = open(log_file_name, "w")
__log_fd = __log_file.fileno()
# Frontend rules
class CheckTargetBuildsWorker:
def __init__(self, target, true_properties, false_properties):
self.target = target
self.true_properties = property.create_from_strings(true_properties, True)
self.false_properties = property.create_from_strings(false_properties, True)
def check(self, ps):
# FIXME: this should not be hardcoded. Other checks might
# want to consider different set of features as relevant.
toolset = ps.get('toolset')[0]
toolset_version_property = "<toolset-" + toolset + ":version>" ;
relevant = ps.get_properties('target-os') + \
ps.get_properties("toolset") + \
ps.get_properties(toolset_version_property) + \
ps.get_properties("address-model") + \
ps.get_properties("architecture")
rps = property_set.create(relevant)
t = get_manager().targets().current()
p = t.project()
if builds(self.target, p, rps, "%s builds" % self.target):
choosen = self.true_properties
else:
choosen = self.false_properties
return property.evaluate_conditionals_in_context(choosen, ps)
@bjam_signature((["target"], ["true_properties", "*"], ["false_properties", "*"]))
def check_target_builds(target, true_properties, false_properties):
worker = CheckTargetBuildsWorker(target, true_properties, false_properties)
value = value_to_jam(worker.check)
return "<conditional>" + value
get_manager().projects().add_rule("check-target-builds", check_target_builds)
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