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* New feature <relevant> which is automatically deduced in most cases. * Features which are not relevant do not affect target paths and do not prevent merging of virtual targets. * generators.jam: generator.run always returns usage-requirements to allow usage-requirements in non-top-level generators. This is necessary because we're using usage-requirements to track relevance from flags. * New rule toolset.uses-features to specify features that the rule checks manually, instead of using toolset.flags. In the future, we should consider restricting the properties actually passed, to detect errors. * Adjust tests to handle the new paths (verified by inspection). * Add temporary option --ignore-relevance to consider all features relevant to aid migration. * New rule property.evaluate-conditional-relevance which helps tracking relevance in <conditional>. * Widely scattered changes to use the new interfaces.
26 lines
559 B
Plaintext
26 lines
559 B
Plaintext
# Copyright 2003 Vladimir Prus
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# Distributed under the Boost Software License, Version 1.0.
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# (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
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import type ;
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import generators ;
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import feature ;
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import toolset : flags ;
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feature.feature flex.prefix : : free ;
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type.register LEX : l ;
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type.register LEX++ : ll ;
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generators.register-standard lex.lex : LEX : C ;
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generators.register-standard lex.lex : LEX++ : CPP ;
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rule init ( )
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{
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}
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flags lex.lex PREFIX <flex.prefix> ;
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actions lex
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{
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flex -P$(PREFIX) -o$(<) $(>)
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}
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