FM / features

/usr/share/boost-build/src/tools/features/

/usr/share/boost-build/src/tools/features

Name	Size	Mode	Actions
address-model-feature.jam	695	0644	edit dl rm
allow-feature.jam	512	0644	edit dl rm
architecture-feature.jam	1222	0644	edit dl rm
archiveflags-feature.jam	447	0644	edit dl rm
asmflags-feature.jam	400	0644	edit dl rm
build-feature.jam	626	0644	edit dl rm
cflags-feature.jam	691	0644	edit dl rm
conditional-feature.jam	728	0644	edit dl rm
coverage-feature.jam	609	0644	edit dl rm
cxx-template-depth-feature.jam	1427	0644	edit dl rm
cxxabi-feature.jam	407	0644	edit dl rm
cxxflags-feature.jam	374	0644	edit dl rm
cxxstd-feature.jam	1667	0644	edit dl rm
debug-feature.jam	936	0644	edit dl rm
define-feature.jam	708	0644	edit dl rm
dependency-feature.jam	2035	0644	edit dl rm
dll-feature.jam	2218	0644	edit dl rm
exception-feature.jam	1009	0644	edit dl rm
fflags-feature.jam	420	0644	edit dl rm
file-feature.jam	482	0644	edit dl rm
find-lib-feature.jam	1073	0644	edit dl rm
flags-feature.jam	492	0644	edit dl rm
force-include-feature.jam	572	0644	edit dl rm
include-feature.jam	434	0644	edit dl rm
instruction-set-feature.jam	2494	0644	edit dl rm
internal-feature.jam	440	0644	edit dl rm
library-feature.jam	708	0644	edit dl rm
link-feature.jam	406	0644	edit dl rm
linkflags-feature.jam	377	0644	edit dl rm
local-visibility-feature.jam	984	0644	edit dl rm
location-feature.jam	453	0644	edit dl rm
location-prefix-feature.jam	505	0644	edit dl rm
lto-feature.jam	1309	0644	edit dl rm
name-feature.jam	632	0644	edit dl rm
objcflags-feature.jam	657	0644	edit dl rm
optimization-feature.jam	939	0644	edit dl rm
os-feature.jam	3687	0644	edit dl rm
relevant-feature.jam	1992	0644	edit dl rm
rtti-feature.jam	395	0644	edit dl rm
runtime-feature.jam	1290	0644	edit dl rm
sanitizers-feature.jam	1716	0644	edit dl rm
search-feature.jam	516	0644	edit dl rm
source-feature.jam	753	0644	edit dl rm
stdlib-feature.jam	976	0644	edit dl rm
strip-feature.jam	616	0644	edit dl rm
tag-feature.jam	1174	0644	edit dl rm
threadapi-feature.jam	1162	0644	edit dl rm
threading-feature.jam	775	0644	edit dl rm
toolset-feature.jam	528	0644	edit dl rm
translate-path-feature.jam	944	0644	edit dl rm
user-interface-feature.jam	952	0644	edit dl rm
variant-feature.jam	3300	0644	edit dl rm
version-feature.jam	480	0644	edit dl rm
visibility-feature.jam	1987	0644	edit dl rm
warnings-feature.jam	1034	0644	edit dl rm
__init_features__.jam	743	0644	edit dl rm

Edit: /usr/share/boost-build/src/tools/features/relevant-feature.jam (1992B)

# Copyright 2017 Steven Watanabe
# 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)

import feature ;

#| tag::doc[]

[[bbv2.builtin.features.relevant]]`relevant`::
*Allowed values:* the name of any feature.
+
Indicates which other features are relevant for a given target. It is usually
not necessary to manage it explicitly, as B2 can deduce it in most
cases. Features which are not relevant will not affect target paths, and will
not cause conflicts.
+
* A feature will be considered relevant if any of the following are true
+
** It is referenced by `toolset.flags` or `toolset.uses-features`
** It is used by the requirements of a generator
** It is a sub-feature of a relevant feature
** It has a sub-feature which is relevant
** It is a composite feature, and any composed feature is relevant
** It affects target alternative selection for a main target
** It is a propagated feature and is relevant for any dependency
** It is relevant for any dependency created by the same main target
** It is used in the condition of a conditional property and the corresponding
  value is relevant
** It is explicitly named as relevant
+
* Relevant features cannot be automatically deduced in the following cases:
+
** Indirect conditionals. Solution: return properties of the form
`<relevant>result-feature:<relevant>condition-feature`
+
NOTE: This isn't really a conditional, although for most purposes it functions
like one. In particular, it does not support multiple comma-separated elements
in the condition, and it does work correctly even in contexts where conditional
properties are not allowed
** Action rules that read properties. Solution: add toolset.uses-features to
  tell B2 that the feature is actually used.
** Generators and targets that manipulate property-sets directly. Solution:
  set <relevant> manually.

|# # end::doc[]

feature.feature relevant : : incidental free ;

# Copyright 2017 Steven Watanabe # 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) import feature ; #| tag::doc[] [[bbv2.builtin.features.relevant]]`relevant`:: *Allowed values:* the name of any feature. + Indicates which other features are relevant for a given target. It is usually not necessary to manage it explicitly, as B2 can deduce it in most cases. Features which are not relevant will not affect target paths, and will not cause conflicts. + * A feature will be considered relevant if any of the following are true + ** It is referenced by `toolset.flags` or `toolset.uses-features` ** It is used by the requirements of a generator ** It is a sub-feature of a relevant feature ** It has a sub-feature which is relevant ** It is a composite feature, and any composed feature is relevant ** It affects target alternative selection for a main target ** It is a propagated feature and is relevant for any dependency ** It is relevant for any dependency created by the same main target ** It is used in the condition of a conditional property and the corresponding value is relevant ** It is explicitly named as relevant + * Relevant features cannot be automatically deduced in the following cases: + ** Indirect conditionals. Solution: return properties of the form `result-feature:condition-feature` + NOTE: This isn't really a conditional, although for most purposes it functions like one. In particular, it does not support multiple comma-separated elements in the condition, and it does work correctly even in contexts where conditional properties are not allowed ** Action rules that read properties. Solution: add toolset.uses-features to tell B2 that the feature is actually used. ** Generators and targets that manipulate property-sets directly. Solution: set manually. |# # end::doc[] feature.feature relevant : : incidental free ;