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  1. Qt
  2. QTBUG-109394

Support cmake UNITY_BUILD

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    • Icon: Epic Epic
    • Resolution: Fixed
    • Icon: P3: Somewhat important P3: Somewhat important
    • None
    • None
    • Build System: CMake
    • None
    • UNITY_BUILD
    • All
    • 013a05a93 (6.5), 135a79294 (dev), bd99d0212 (6.4), 60816bcd3 (dev), b2789fd47 (6.5), c925d1b4a (dev), 356bed88f (tqtc/lts-6.2), f1fe08e07 (6.5), c0957ca53 (dev), 79cc039b0 (dev), e2e1dd6f6 (6.10), fd045c49a (6.10), d4e61a130 (6.9), 5051c8e01 (6.9)

      qt is a huge project and takes time to build

      it could be great to support cmake unity/jumbo build and reduce build time:

      https://cmake.org/cmake/help/latest/prop_tgt/UNITY_BUILD.html

      I tried passing "cmake -DCMAKE_UNITY_BUILD=ON -DCMAKE_UNITY_BUILD_BATCH_SIZE=16"

      typical errors are static variables cloberring and ambiguous namespaces:

       

       
qtbase/src/corelib/serialization/qcborstreamwriter.cpp:553:22: error: 'cbor_encode_float' was not declared in this scope; did you mean 'cbor_encode_uint'?
 2022-12-13T15:35:22.2822474Z 553 | d->executeAppend(cbor_encode_float, f);
 2022-12-13T15:35:22.2823065Z | ^~~~~~~~~~~~~~~~~
...
qtbase/src/corelib/text/qstring.cpp:6945:29: error: call of overloaded 'qIsUpper(const char&)' is ambiguous
 2022-12-13T15:35:23.0507306Z 6945 | if (qIsUpper(*c))
 2022-12-13T15:35:23.0507774Z | ~~~~~~~^~~
 2022-12-13T15:35:23.0508296Z In file included from $SRC_DIR/build/qtbase/src/tools/bootstrap/CMakeFiles/Bootstrap.dir/Unity/unity_3_cxx.cxx:7:
 2022-12-13T15:35:23.0509061Z $SRC_DIR/qtbase/src/corelib/text/qlocale.cpp:2601:13: note: candidate: 'bool qIsUpper(char)'

       Known issues

      • X11 headers containing things like #define None 0 causing clashes
      • Some Windows headers (network?) not guarded
      • Metatype declarations causing issues. Could be fixed by removing them (see https://lists.qt-project.org/pipermail/development/2022-July/042744.html )
      • -Werror=subobject-linkage producing qerrormessage.cpp:38:7: error: ‘QErrorMessagePrivate’ has a field ‘QErrorMessagePrivate::pending’ whose type uses the anonymous namespace []

        For Gerrit Dashboard: QTBUG-109394
        # Subject Branch Project Status CR V
        463670,44 Network: link directly to libresolv instead of dlopen()ing it dev qt/qtbase Status: MERGED +2 0
        468159,25 WIP: Add Insignificant Unity Builds to COIN dev qt/qt5 Status: ABANDONED -2 0
        471326,2 Exclude sources from the Unity Build dev qt/qtbase Status: MERGED +2 0
        472013,7 Resolve symbol conflict between qmutex_unix and qwaitcondition_unix.cpp dev qt/qtbase Status: MERGED +2 0
        472077,3 Resolve duplicate symbol error dev qt/qtwebengine Status: MERGED +2 0
        472362,2 Add drive letter to source paths when calling qt-internal- scripts 6.5 qt/qtbase Status: MERGED +2 0
        472363,2 Add [[maybe_unused]] attribute to an unused variable 6.5 qt/qtbase Status: MERGED +2 0
        472364,2 Exclude thread/qwaitcondition_unix.cpp from the Unity Build 6.5 qt/qtbase Status: MERGED +2 0
        472366,2 Resolve duplicate symbol error 6.5 qt/qtwebengine Status: MERGED +2 0
        472490,2 Exclude wasm/qwasmaudiosink.cpp from the Unity Build 6.5 qt/qtmultimedia Status: MERGED +2 0
        472509,2 Exclude wasm/qwasmaudiosink.cpp from the Unity Build dev qt/qtmultimedia Status: MERGED +2 0
        472529,3 Exclude `qmldomlib` from Unity Build dev qt/qtdeclarative Status: MERGED +2 0
        472697,2 Exclude `qmldomlib` from Unity Build 6.5 qt/qtdeclarative Status: MERGED +2 0
        472769,2 Remove the extra attribute 6.5 qt/qtcharts Status: MERGED +2 0
        472797,5 Remove the extra attribute dev qt/qtcharts Status: MERGED +2 0
        472838,2 Exclude a few source files from unity build dev qt/qtdatavis3d Status: MERGED +2 0
        472955,2 Exclude a few source files from unity build 6.5 qt/qtdatavis3d Status: MERGED +2 0
        473153,3 Exclude files from unity build to resolve Android's build dev qt/qtbase Status: MERGED +2 0
        473194,4 Resolve duplicate symbols dev qt/qtbase Status: MERGED +2 0
        473260,2 Resolve duplicate symbols 6.5 qt/qtbase Status: MERGED +2 0
        473261,2 Exclude files from unity build to resolve Android's build 6.5 qt/qtbase Status: MERGED +2 0
        473344,3 Exclude Android Vulkan sources from Unity Build dev qt/qtbase Status: MERGED +2 0
        473508,16 Enable Unity Build on QtBase for 3 Configurations dev qt/qt5 Status: MERGED +2 0
        473543,2 Exclude Android Vulkan sources from Unity Build 6.5 qt/qtbase Status: MERGED +2 0
        473571,2 Exclude files from Unity Build dev qt/qtgraphs Status: MERGED +2 0
        473628,2 Use QCss:: namespace when accessing Value on Integrity dev qt/qtbase Status: MERGED +2 0
        473697,2 Exclude files from Unity Build dev qt/qtgraphs Status: MERGED +2 0
        473703,2 Exclude files from Unity Build dev qt/qtsensors Status: MERGED +2 0
        473708,2 Resolve a duplicate symbol issue dev qt/qtdatavis3d Status: MERGED +2 0
        473713,3 Remove Unnecessary Q_DECLARE_METATYPE(QJniObject) dev qt/qtconnectivity Status: MERGED +2 0
        473791,2 Resolve a duplicate symbol issue 6.5 qt/qtdatavis3d Status: MERGED +2 0
        473925,2 Exclude files from Unity Build 6.5 qt/qtsensors Status: MERGED +2 0
        473926,2 Use QCss:: namespace when accessing Value on Integrity 6.5 qt/qtbase Status: MERGED +2 0
        473989,2 Remove Unnecessary Q_DECLARE_METATYPE(QJniObject) 6.5 qt/qtconnectivity Status: MERGED +2 0
        473992,2 Exclude a file from Unity Build 6.5 qt/qtmultimedia Status: MERGED +2 0
        473993,2 Remove an unused private variable 6.5 qt/qtmultimedia Status: MERGED +2 0
        474009,2 Refactor the usage of icutils::Node dev qt/qtdeclarative Status: MERGED +2 0
        474021,4 Remove an unused private variable dev qt/qtmultimedia Status: MERGED +2 0
        474022,3 Exclude a file from Unity Build dev qt/qtmultimedia Status: MERGED +2 0
        474045,2 Remove Q_DECLARE_METATYPE dev qt/qtnetworkauth Status: MERGED +2 0
        474075,2 Exclude files from unity build dev qt/qtbase Status: MERGED +2 0
        474164,2 Exclude files from unity build 6.5 qt/qtbase Status: MERGED +2 0
        474170,2 Remove Q_DECLARE_METATYPE 6.5 qt/qtnetworkauth Status: MERGED +2 0
        474180,2 Refactor the usage of icutils::Node 6.5 qt/qtdeclarative Status: MERGED +2 0
        474227,5 Exclude hardwareintegration plugins from Unity Build dev qt/qtwayland Status: MERGED +2 0
        474228,4 Exclude files including EGL/egl.h from Unity Build dev qt/qtmultimedia Status: MERGED +2 0
        474395,2 Exclude files including EGL/egl.h from Unity Build 6.5 qt/qtmultimedia Status: MERGED +2 0
        474399,2 Exclude hardwareintegration plugins from Unity Build 6.5 qt/qtwayland Status: MERGED +2 0
        475195,3 Resolve symbol ambiguity when building with Unity Build dev qt/qtbase Status: MERGED +2 0
        475962,2 Resolve symbol ambiguity when building with Unity Build 6.5 qt/qtbase Status: MERGED +2 0
        476666,4 Add Unity Build to config.summary dev qt/qtbase Status: MERGED +2 0
        477292,3 Remove an unused variable dev qt/qtbase Status: MERGED +2 0
        478362,8 Compile Network with NOMINMAX dev qt/qtbase Status: MERGED +2 0
        478676,1 Resolve symbol conflict between qmutex_unix and qwaitcondition_unix.cpp 6.5 qt/qtbase Status: ABANDONED 0 0
        478726,1 Use %zu for qsizetype instead of %lld dev qt/qtbase Status: ABANDONED -1 0
        478741,2 Exclude source files from QFFmpegMediaPlugin when building for Android dev qt/qtmultimedia Status: MERGED +2 0
        479590,2 Compile Network with NOMINMAX 6.5 qt/qtbase Status: MERGED +2 0
        479628,2 Exclude source files from QFFmpegMediaPlugin when building for Android 6.5 qt/qtmultimedia Status: MERGED +2 0
        483066,1 Add Unity Build to config.summary 6.5 qt/qtbase Status: ABANDONED 0 0
        483067,1 Add Unity Build to config.summary 6.6 qt/qtbase Status: ABANDONED 0 0
        483068,1 Remove an unused variable 6.6 qt/qtbase Status: ABANDONED 0 0
        483069,1 Remove an unused variable 6.5 qt/qtbase Status: ABANDONED 0 0
        483076,1 Add Unity Build to config.summary 6.5 qt/qtbase Status: ABANDONED 0 0
        483077,1 Add Unity Build to config.summary 6.6 qt/qtbase Status: ABANDONED 0 0
        483078,1 Remove an unused variable 6.5 qt/qtbase Status: ABANDONED 0 0
        483079,1 Remove an unused variable 6.6 qt/qtbase Status: ABANDONED 0 0
        483086,1 Add Unity Build to config.summary 6.5 qt/qtbase Status: ABANDONED 0 0
        483087,1 Add Unity Build to config.summary 6.6 qt/qtbase Status: ABANDONED 0 0
        483088,1 Remove an unused variable 6.5 qt/qtbase Status: ABANDONED 0 0
        483089,1 Remove an unused variable 6.6 qt/qtbase Status: ABANDONED 0 0
        483096,1 Add Unity Build to config.summary 6.5 qt/qtbase Status: ABANDONED 0 0
        483097,1 Add Unity Build to config.summary 6.6 qt/qtbase Status: ABANDONED 0 0
        483098,1 Remove an unused variable 6.5 qt/qtbase Status: ABANDONED 0 0
        483099,1 Remove an unused variable 6.6 qt/qtbase Status: ABANDONED 0 0
        483174,2 Remove an unused variable 6.5 qt/qtbase Status: MERGED +2 0
        483175,2 Remove an unused variable 6.6 qt/qtbase Status: MERGED +2 0
        483176,2 Add Unity Build to config.summary 6.5 qt/qtbase Status: MERGED +2 0
        483177,2 Add Unity Build to config.summary 6.6 qt/qtbase Status: MERGED +2 0
        490004,2 Merge duplicate qHash(QBluetoohAddress) definitions dev qt/qtconnectivity Status: MERGED +2 0
        490315,2 Merge duplicate qHash(QBluetoohAddress) definitions 6.5 qt/qtconnectivity Status: MERGED +2 0
        490316,2 Merge duplicate qHash(QBluetoohAddress) definitions 6.6 qt/qtconnectivity Status: MERGED +2 0
        492191,2 Revert "Enable Unity Build on Qt Base for LLVM, and MinGW on Windows" dev qt/qt5 Status: MERGED +2 0
        492192,2 Revert "Enable Unity Build on Qt Base for macOS -developer-build" dev qt/qt5 Status: MERGED +2 0
        492193,2 Revert "Enable Unity Build on QtBase for 3 Configurations" dev qt/qt5 Status: MERGED +2 0
        493369,4 QFreeList: Resolve symbol ambiguity in unity build dev qt/qtbase Status: MERGED +2 0
        494063,2 QFreeList: Resolve symbol ambiguity in unity build 6.6 qt/qtbase Status: MERGED +2 0
        494064,2 QFreeList: Resolve symbol ambiguity in unity build 6.5 qt/qtbase Status: MERGED +2 0
        535683,4 Windows QPA: Fix unity build dev qt/qtbase Status: MERGED +2 0
        541714,2 Windows QPA: Fix unity build 6.7 qt/qtbase Status: MERGED +2 0
        541782,2 Windows QPA: Fix unity build 6.6 qt/qtbase Status: MERGED +2 0
        541936,2 Windows QPA: Fix unity build tqtc/lts-6.5 qt/tqtc-qtbase Status: MERGED +2 0
        551670,3 Fix CMake Unity build dev qt/qtquick3d Status: MERGED +2 0
        629231,6 lupdate: remove extra definition of CppMagicComment dev qt/qttools Status: MERGED +2 0
        642242,3 Fix unity build dev qt/qtsvg Status: MERGED +2 0
        654054,2 Fix Unity build on Windows dev qt/qtconnectivity Status: MERGED +2 0
        654078,2 Fix Unity build on Windows 6.10 qt/qtconnectivity Status: MERGED +2 0
        654087,2 Move Unity build exclusions to the correct location 6.10 qt/qtconnectivity Status: MERGED +2 0
        654112,2 Move Unity build exclusions to the correct location dev qt/qtconnectivity Status: MERGED +2 0
        654239,2 Fix Unity build on Windows 6.9 qt/qtconnectivity Status: MERGED +2 0
        654240,2 Move Unity build exclusions to the correct location 6.9 qt/qtconnectivity Status: MERGED +2 0

            qtbuildsystem Qt Build System Team
            jschueller Julien Schueller
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              Created:
              Updated:
              Resolved:

                There are no open Gerrit changes