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  1. Qt
  2. QTBUG-114370

documentviewer demo causes lots of warnings when building on iOS

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    • iOS/tvOS/watchOS
    • c8b3c0935 (dev), ae584b796 (6.6)

    Description

      After https://codereview.qt-project.org/c/qt/qtdoc/+/482821 is applied, building the qtdocs documentviewer demo causes a lot of warnings when building for iOS:

      ld: warning: duplicate symbol 'AbstractViewer::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::qt_metacall(QMetaObject::Call, int, void**)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::metaObject() const' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::uiInitialized()' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'vtable for AbstractViewer' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'typeinfo name for AbstractViewer' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'typeinfo for AbstractViewer' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::showMessage(QString const&, int)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::documentLoaded(QString const&)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::qt_metacast(char const*)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::printingEnabledChanged(bool)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::staticMetaObject' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/build/documentviewer.build/Debug-iphoneos/Objects-normal/arm64/mocs_compilation.o
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::qt_metacall(QMetaObject::Call, int, void**)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::metaObject() const' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::uiInitialized()' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'vtable for AbstractViewer' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'typeinfo name for AbstractViewer' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'typeinfo for AbstractViewer' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::showMessage(QString const&, int)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::documentLoaded(QString const&)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::qt_metacast(char const*)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::printingEnabledChanged(bool)' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)
ld: warning: duplicate symbol 'AbstractViewer::staticMetaObject' in:
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/txtviewer/Debug-iphoneos/libtxtviewer.a(mocs_compilation.o)
    /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/plugins/jsonviewer/Debug-iphoneos/libjsonviewer.a(mocs_compilation.o)


GenerateDSYMFile /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/app/Debug-iphoneos/documentviewer.app.dSYM /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/app/Debug-iphoneos/documentviewer.app/documentviewer (in target 'documentviewer' from project 'documentviewer')
    cd /Volumes/T3/Dev/qt/worktrees/dev/qtdoc/examples/demos/documentviewer
    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/dsymutil /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/app/Debug-iphoneos/documentviewer.app/documentviewer -o /Volumes/T3/Dev/qt/builds/6.6-off/documentviewer_ios/app/Debug-iphoneos/documentviewer.app.dSYM
warning: (arm64) /Users/qt/work/qt/qtwebengine/build/target/src/pdf/Debug/arm64/obj/third_party/pdfium/core/fxcrt/fxcrt/binary_buffer.o unable to open object file: No such file or directory
warning: (arm64) /Users/qt/work/qt/qtwebengine/build/target/src/pdf/Debug/arm64/obj/third_party/pdfium/core/fxcrt/fxcrt/bytestring.o unable to open object file: No such file or directory
warning: (arm64) /Users/qt/work/qt/qtwebengine/build/target/src/pdf/Debug/arm64/obj/third_party/pdfium/core/fxcrt/fxcrt/cfx_bitstream.o unable to open object file: No such file or directory
warning: (arm64) /Users/qt/work/qt/qtwebengine/build/target/src/pdf/Debug/arm64/obj/third_party/pdfium/core/fxcrt/fxcrt/cfx_datetime.o unable to open object file: No such file or directory
warning: (arm64) /Users/qt/work/qt/qtwebengine/build/target/src/pdf/Debug/arm64/obj/third_party/pdfium/core/fxcrt/fxcrt/cfx_read_only_span_stream.o unable to open object file: No such file or directory
...

      Not sure why the dsymutil warnings happen

      But to avoid the duplicate symbol warnings, the demo should have one common library that is linked into each static plugin, instead of compiling ../../app/abstractviewer.cpp 3 times for each static plugin, and then linking all of them into the app.

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          Bug - A problem which impairs or prevents the functions of the product. QTBUG-114365 [REG 6.6.0->6.5.1] demos/documentviewer not compiling on macOS

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
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              axelspoerl Axel Spoerl
              alexandru.croitor Alexandru Croitor
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                Updated:
                Resolved:

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