ceph/src/boost/tools/build/test/unused.py

   1 #!/usr/bin/python
   2
   3 # Copyright 2003 Vladimir Prus
   4 # Distributed under the Boost Software License, Version 1.0.
   5 # (See accompanying file LICENSE_1_0.txt or copy at
   6 # http://www.boost.org/LICENSE_1_0.txt)
   7
   8 # Test that unused sources are at least reported.
   9
  10 import BoostBuild
  11
  12 t = BoostBuild.Tester(["-d+2"], use_test_config=False)
  13
  14 t.write("a.cpp", "int main() {}\n")
  15 t.write("b.cpp", "\n")
  16 t.write("b.xyz", "")
  17 t.write("jamroot.jam", """\
  18 import "class" : new ;
  19 import modules ;
  20 import project ;
  21 import targets ;
  22 import type ;
  23 import virtual-target ;
  24
  25 type.register X : xyz ;
  26
  27 class test-target-class : basic-target
  28 {
  29     rule construct ( name : source-targets * : property-set )
  30     {
  31         local result = [ property-set.empty ] ;
  32         if ! [ modules.peek : GENERATE_NOTHING ]
  33         {
  34             result += [ virtual-target.from-file b.xyz : . : $(self.project) ] ;
  35             if ! [ modules.peek : GENERATE_ONLY_UNUSABLE ]
  36             {
  37                 result += [ virtual-target.from-file b.cpp : . : $(self.project)
  38                     ] ;
  39             }
  40         }
  41         return $(result) ;
  42     }
  43
  44     rule compute-usage-requirements ( rproperties : targets * )
  45     {
  46         return [ property-set.create <define>FOO ] ;
  47     }
  48 }
  49
  50 rule make-b-main-target
  51 {
  52     local project = [ project.current ] ;
  53     targets.main-target-alternative [ new test-target-class b : $(project) ] ;
  54 }
  55
  56 exe a : a.cpp b c ;
  57 make-b-main-target ;
  58 alias c ;  # Expands to nothing, intentionally.
  59 """)
  60
  61 t.run_build_system()
  62
  63 # The second invocation should do nothing, and produce no warning. The previous
  64 # invocation might have printed executed actions and other things, so it is not
  65 # easy to check if a warning was issued or not.
  66 t.run_build_system(stdout="")
  67
  68 t.run_build_system(["-sGENERATE_ONLY_UNUSABLE=1"], stdout="")
  69
  70 # Check that even if main target generates nothing, its usage requirements are
  71 # still propagated to dependants.
  72 t.write("a.cpp", """\
  73 #ifndef FOO
  74     #error We refuse to compile without FOO being defined!
  75     We_refuse_to_compile_without_FOO_being_defined
  76 #endif
  77 int main() {}
  78 """)
  79 t.run_build_system(["-sGENERATE_NOTHING=1"])
  80
  81 t.cleanup()