mirror of
https://github.com/boostorg/build.git
synced 2026-02-15 00:52:16 +00:00
70 lines
2.6 KiB
Python
70 lines
2.6 KiB
Python
# Status: ported
|
|
# Base revision: 64432.
|
|
# Copyright 2005-2010 Vladimir Prus.
|
|
# Distributed under the Boost Software License, Version 1.0. (See
|
|
# accompanying file LICENSE_1_0.txt or copy at
|
|
# http://www.boost.org/LICENSE_1_0.txt)
|
|
|
|
# Defines main target 'cast', used to change type for target. For example, in Qt
|
|
# library one wants two kinds of CPP files -- those that just compiled and those
|
|
# that are passed via the MOC tool.
|
|
#
|
|
# This is done with:
|
|
#
|
|
# exe main : main.cpp [ cast _ moccable-cpp : widget.cpp ] ;
|
|
#
|
|
# Boost.Build will assing target type CPP to both main.cpp and widget.cpp. Then,
|
|
# the cast rule will change target type of widget.cpp to MOCCABLE-CPP, and Qt
|
|
# support will run the MOC tool as part of the build process.
|
|
#
|
|
# At the moment, the 'cast' rule only works for non-derived (source) targets.
|
|
#
|
|
# TODO: The following comment is unclear or incorrect. Clean it up.
|
|
# > Another solution would be to add a separate main target 'moc-them' that
|
|
# > would moc all the passed sources, no matter what their type is, but I prefer
|
|
# > cast, as defining a new target type + generator for that type is somewhat
|
|
# > simpler than defining a main target rule.
|
|
|
|
import b2.build.targets as targets
|
|
import b2.build.virtual_target as virtual_target
|
|
|
|
from b2.manager import get_manager
|
|
from b2.util import bjam_signature
|
|
|
|
class CastTargetClass(targets.TypedTarget):
|
|
|
|
def construct(name, source_targets, ps):
|
|
result = []
|
|
for s in source_targets:
|
|
if not isinstance(s, virtual_targets.FileTarget):
|
|
get_manager().errors()("Source to the 'cast' metatager is not a file")
|
|
|
|
if s.action():
|
|
get_manager().errors()("Only non-derived targets allowed as sources for 'cast'.")
|
|
|
|
|
|
r = s.clone_with_different_type(self.type())
|
|
result.append(get_manager().virtual_targets().register(r))
|
|
|
|
return result
|
|
|
|
|
|
@bjam_signature((["name", "type"], ["sources", "*"], ["requirements", "*"],
|
|
["default_build", "*"], ["usage_requirements", "*"]))
|
|
def cast(name, type, sources, requirements, default_build, usage_requirements):
|
|
|
|
from b2.manager import get_manager
|
|
t = get_manager().targets()
|
|
|
|
project = get_manager().projects().current()
|
|
|
|
return t.main_target_alternative(
|
|
CastTargetClass(name, project, type,
|
|
t.main_target_sources(sources, name),
|
|
t.main_target_requirements(requirements, project),
|
|
t.main_target_default_build(default_build, project),
|
|
t.main_target_usage_requirements(usage_requirements, project)))
|
|
|
|
|
|
get_manager().projects().add_rule("cast", cast)
|