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82 lines
2.1 KiB
Python
82 lines
2.1 KiB
Python
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#!/usr/bin/python
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# 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.txt or copy at
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# https://www.bfgroup.xyz/b2/LICENSE.txt)
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# Test that unused sources are at least reported.
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import BoostBuild
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t = BoostBuild.Tester(["-d+2"], use_test_config=False)
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t.write("a.cpp", "int main() {}\n")
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t.write("b.cpp", "\n")
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t.write("b.xyz", "")
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t.write("jamroot.jam", """\
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import "class" : new ;
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import modules ;
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import project ;
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import targets ;
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import type ;
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import virtual-target ;
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type.register X : xyz ;
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class test-target-class : basic-target
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{
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rule construct ( name : source-targets * : property-set )
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{
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local result = [ property-set.empty ] ;
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if ! [ modules.peek : GENERATE_NOTHING ]
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{
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result += [ virtual-target.from-file b.xyz : . : $(self.project) ] ;
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if ! [ modules.peek : GENERATE_ONLY_UNUSABLE ]
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{
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result += [ virtual-target.from-file b.cpp : . : $(self.project)
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] ;
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}
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}
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return $(result) ;
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}
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rule compute-usage-requirements ( rproperties : targets * )
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{
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return [ property-set.create <define>FOO ] ;
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}
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}
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rule make-b-main-target
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{
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local project = [ project.current ] ;
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targets.main-target-alternative [ new test-target-class b : $(project) ] ;
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}
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exe a : a.cpp b c ;
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make-b-main-target ;
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alias c ; # Expands to nothing, intentionally.
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""")
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t.run_build_system()
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# The second invocation should do nothing, and produce no warning. The previous
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# invocation might have printed executed actions and other things, so it is not
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# easy to check if a warning was issued or not.
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t.run_build_system(stdout="")
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t.run_build_system(["-sGENERATE_ONLY_UNUSABLE=1"], stdout="")
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# Check that even if main target generates nothing, its usage requirements are
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# still propagated to dependants.
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t.write("a.cpp", """\
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#ifndef FOO
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#error We refuse to compile without FOO being defined!
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We_refuse_to_compile_without_FOO_being_defined
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#endif
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int main() {}
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""")
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t.run_build_system(["-sGENERATE_NOTHING=1"])
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t.cleanup()
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