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Compilation error on QT example #2111

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khuck opened this issue Apr 22, 2016 · 3 comments
Closed

Compilation error on QT example #2111

khuck opened this issue Apr 22, 2016 · 3 comments
Labels
affecting: UO category: examples type: defect
Milestone
0.9.99

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@khuck
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khuck commented Apr 22, 2016 •
edited by K-ballo

When building on my local system (which apparently has QT installed), the QT example is configured to build but the example fails to compile. The error message is:

Scanning dependencies of target qt_exe
[ 85%] Building CXX object examples/qt/CMakeFiles/qt_exe.dir/qt.cpp.o
/var/lib/buildbot/slaves/apex/master-hpx3/build/examples/qt/qt.cpp: In function ‘void qt_main(int, char**)’:
/var/lib/buildbot/slaves/apex/master-hpx3/build/examples/qt/qt.cpp:47:38: error: reference to ‘_1’ is ambiguous
     widget main(hpx::util::bind(run, _1, _2));
                                      ^
In file included from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/lcos/detail/future_data.hpp:19:0,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/lcos/future.hpp:22,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/actions/action_support.hpp:14,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/actions/transfer_action.hpp:15,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/parcelset/parcel.hpp:14,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/applier/applier.hpp:18,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/components/server/create_component.hpp:13,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/components/component_factory.hpp:46,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/include/components.hpp:13,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/include/runtime.hpp:10,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/hpx.hpp:10,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/examples/qt/qt.cpp:6:
/var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/bind.hpp:47:53: note: candidates are: constexpr const hpx::util::detail::placeholder<1ul> hpx::util::placeholders::_1
         HPX_STATIC_CONSTEXPR detail::placeholder<1> _1 = {};
                                                     ^
In file included from /usr/include/boost/bind/bind.hpp:2030:0,
                 from /usr/include/boost/bind.hpp:22,
                 from /usr/include/boost/thread/pthread/once_atomic.hpp:19,
                 from /usr/include/boost/thread/once.hpp:20,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/plugin/detail/dll_dlopen.hpp:20,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/plugin/dll.hpp:20,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/plugin/plugin_factory.hpp:15,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/plugin.hpp:11,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/components/component_registry_base.hpp:11,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/components/component_registry.hpp:12,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/include/components.hpp:11,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/include/runtime.hpp:10,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/hpx.hpp:10,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/examples/qt/qt.cpp:6:
/usr/include/boost/bind/placeholders.hpp:55:15: note:                 boost::arg<1> {anonymous}::_1
 boost::arg<1> _1;
               ^
/var/lib/buildbot/slaves/apex/master-hpx3/build/examples/qt/qt.cpp:47:42: error: reference to ‘_2’ is ambiguous
     widget main(hpx::util::bind(run, _1, _2));
                                          ^
In file included from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/lcos/detail/future_data.hpp:19:0,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/lcos/future.hpp:22,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/actions/action_support.hpp:14,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/actions/transfer_action.hpp:15,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/parcelset/parcel.hpp:14,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/applier/applier.hpp:18,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/components/server/create_component.hpp:13,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/components/component_factory.hpp:46,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/include/components.hpp:13,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/include/runtime.hpp:10,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/hpx.hpp:10,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/examples/qt/qt.cpp:6:
/var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/bind.hpp:48:53: note: candidates are: constexpr const hpx::util::detail::placeholder<2ul> hpx::util::placeholders::_2
         HPX_STATIC_CONSTEXPR detail::placeholder<2> _2 = {};
                                                     ^
In file included from /usr/include/boost/bind/bind.hpp:2030:0,
                 from /usr/include/boost/bind.hpp:22,
                 from /usr/include/boost/thread/pthread/once_atomic.hpp:19,
                 from /usr/include/boost/thread/once.hpp:20,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/plugin/detail/dll_dlopen.hpp:20,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/plugin/dll.hpp:20,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/plugin/plugin_factory.hpp:15,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/util/plugin.hpp:11,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/components/component_registry_base.hpp:11,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/runtime/components/component_registry.hpp:12,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/include/components.hpp:11,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/include/runtime.hpp:10,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/hpx/hpx.hpp:10,
                 from /var/lib/buildbot/slaves/apex/master-hpx3/build/examples/qt/qt.cpp:6:
/usr/include/boost/bind/placeholders.hpp:56:15: note:                 boost::arg<2> {anonymous}::_2
 boost::arg<2> _2;
               ^
examples/qt/CMakeFiles/qt_exe.dir/build.make:60: recipe for target 'examples/qt/CMakeFiles/qt_exe.dir/qt.cpp.o' failed
make[3]: *** [examples/qt/CMakeFiles/qt_exe.dir/qt.cpp.o] Error 1
CMakeFiles/Makefile2:9183: recipe for target 'examples/qt/CMakeFiles/qt_exe.dir/all' failed
make[2]: *** [examples/qt/CMakeFiles/qt_exe.dir/all] Error 2
make[2]: *** Waiting for unfinished jobs....
Linking CXX executable ../../bin/vector_counting_dotproduct
[ 85%] Built target vector_counting_dotproduct_exe
CMakeFiles/Makefile2:998: recipe for target 'CMakeFiles/examples.dir/rule' failed
make[1]: *** [CMakeFiles/examples.dir/rule] Error 2
Makefile:537: recipe for target 'examples' failed
make: *** [examples] Error 2
@K-ballo
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K-ballo commented Apr 22, 2016

It seems boost::bind is finding its way into the code, indirectly via some other #include. Boost.Bind defines placeholders in the global namespace (bad), which results in this kind of ambiguity. We'll need to avoid using namespace hpx::util::placeholders here and everywhere else.

@hkaiser hkaiser added this to the 0.9.12 milestone Apr 22, 2016
@K-ballo
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K-ballo commented Apr 22, 2016

Should be fixed by 7b957b2. Would you try it out and report back?

@gentryx
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gentryx commented Apr 22, 2016 •
edited by hkaiser

Fixes it for me, thanks!

@hkaiser hkaiser closed this as completed May 1, 2016
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affecting: UO category: examples type: defect
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@khuck @hkaiser @gentryx @K-ballo