Details
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Bug
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Resolution: Out of scope
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P2: Important
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None
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5.2.1, 5.12.2
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None
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Windows 7 64 Bit, Qt5.2.1 and Qt4.8.4, MinGW that ships with Qt5.2.1, AVG Virus Scanner
Description
Hi,
we ported a large Qt project from Qt4 to Qt5 and noticed, that Qt5 qmake is ca. 8 times slower that Qt4 qmake.
The attached QtCreator output shows the two qmake runs for the same project. The Qt4 qmake run needs 26 seconds but the Qt5 qmake needs 3 minutes and 18 seconds. That is ca. 8 times slower.
The Qt5 qmake is the qmake.exe that ships with the Qt 5.2.1 MinGW installation. The Qt4 qmake has been build with the exact same compiler – so this is not related to compiler.
The complete output is available here: http://pastebin.com/ysH2B1RU
Qt4 qmake run
=======================================
07:49:47: Führe Schritte für Projekt qtlabb aus...
07:49:47: Starte "c:\codingxp\qt\qt\bin\qmake.exe" C:\CodingXP\cetoni_repository\usl\env\qt\qtlabb\qtlabb.pro -r -spec win32-g++ "CONFIG+=declarative_debug"
Reading C:/CodingXP/cetoni_repository/usl/env/qt/qtlabb/common/common.pro [C:/CodingXP/cetoni_projects/build-qtlabb-Desktop_Qt_4_8_4-Debug/common]
Reading C:/CodingXP/cetoni_repository/usl/env/qt/qtlabb/3rdparty/3rdparty.pro [C:/CodingXP/cetoni_projects/build-qtlabb-Desktop_Qt_4_8_4-Debug/3rdparty]
...
07:50:13: Der Prozess "c:\codingxp\qt\qt\bin\qmake.exe" wurde normal beendet.
07:50:13: Verstrichene Zeit: 00:26.
Qt5 qmake run
====================================
07:52:00: Führe Schritte für Projekt qtlabb aus...
07:52:00: Starte "C:\CodingXP\Qt5.0.2\5.0.2\mingw47_32\bin\qmake.exe" C:\CodingXP\cetoni_repository\usl\env\qt\qtlabb\qtlabb.pro -r -spec win32-g++ "CONFIG+=debug" "CONFIG+=declarative_debug" "CONFIG+=qml_debug"
Reading C:/CodingXP/cetoni_repository/usl/env/qt/qtlabb/common/common.pro [C:/CodingXP/cetoni_projects/build-qtlabb-Desktop_Qt_5_0_2_mingw47_32-Debug/common]
Reading C:/CodingXP/cetoni_repository/usl/env/qt/qtlabb/3rdparty/3rdparty.pro [C:/CodingXP/cetoni_projects/build-qtlabb-Desktop_Qt_5_0_2_mingw47_32-Debug/3rdparty]
Reading C:/CodingXP/cetoni_repository/usl/env/qt/qtlabb/widgets/widgets.pro [C:/CodingXP/cetoni_projects/build-qtlabb-Desktop_Qt_5_0_2_mingw47_32-Debug/widgets]
Reading C:/CodingXP/cetoni_repository/usl/env/qt/qtlabb/itemviews/itemviews.pro [C:/CodingXP/cetoni_projects/build-qtlabb-Desktop_Qt_5_0_2_mingw47_32-Debug/itemviews]
Reading C:/CodingXP/cetoni_repository/usl/env/qt/qtlabb/hid/hid.pro [C:/CodingXP/cetoni_projects/build-qtlabb-Desktop_Qt_5_0_2_mingw47_32-Debug/hid]
...
07:55:18: Der Prozess "C:\CodingXP\Qt5.0.2\5.0.2\mingw47_32\bin\qmake.exe" wurde normal beendet.
07:55:18: Verstrichene Zeit: 03:18.
qmake4 duration: 00:26
qmake5 duration: 03:18
Attachments
Issue Links
- relates to
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QTBUG-63041 QMake five time slower under Windows than under Linux
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- Reported
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