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Thread: Stalling Qwt on windows 11

  1. #1
    Join Date
    Apr 2025
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    Qt products
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    Default Stalling Qwt on windows 11

    Hello,

    I'm trying to install Qwt 6.1.3 on Qt 6.7.0, but whenever I try:
    Qt Code:
    1. mingw32-make
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    I receive the following error message:

    Qt Code:
    1. C:\Qwt-6.1.3\qwt-6.1.3>mingw32-make
    2. cd src\ && ( if not exist Makefile C:\Qt\6.7.0\mingw_64\bin\qmake.exe -o Makefile C:\Qwt-6.1.3\qwt-6.1.3\src\src.pro ) && mingw32-make -f Makefile
    3. mingw32-make[1]: Entering directory 'C:/Qwt-6.1.3/qwt-6.1.3/src'
    4. mingw32-make -f Makefile.Release all
    5. mingw32-make[2]: Entering directory 'C:/Qwt-6.1.3/qwt-6.1.3/src'
    6. compiling qwt_abstract_scale_draw.cpp
    7. In file included from qwt_abstract_scale_draw.h:15,
    8. from qwt_abstract_scale_draw.cpp:10:
    9. qwt_text.h:142:41: **error: 'null' is not a member of 'QString'**
    10. 142 | QwtText( const QString & = QString::null,
    11. | ^~~~
    12. mingw32-make[2]: *** [Makefile.Release:5651: release/qwt_abstract_scale_draw.o] Error 1
    13. mingw32-make[2]: Leaving directory 'C:/Qwt-6.1.3/qwt-6.1.3/src'
    14. mingw32-make[1]: *** [Makefile:49: release-all] Error 2
    15. mingw32-make[1]: Leaving directory 'C:/Qwt-6.1.3/qwt-6.1.3/src'
    16. mingw32-make: *** [Makefile:53: sub-src-make_first-ordered] Error 2
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    I'm not sure what that means. I used the location of qtenv2.bat in mingw_64 to set up the Qt command prompt since "Qt version for Desktop" didn't show up for me. I didn't modify anything in the Qwt build or config.pri files, and I'm uncertain if I should have. I'm honestly at a loss about what to do next. Can anyone assist me?
    - Robert -

  2. #2
    Join Date
    Apr 2025
    Posts
    2
    Qt products
    Qt4
    Platforms
    Windows

    Default Stalling Qwt on windows 11

    Hello,
    I'm trying to install qwt 6.1.3 on Qt 6.7.0, but whenever I try: mingw32-make

    I receive the following error message:

    C:\Qwt-6.1.3\qwt-6.1.3>mingw32-make
    cd src\ && ( if not exist Makefile C:\Qt\6.7.0\mingw_64\bin\qmake.exe -o Makefile C:\Qwt-6.1.3\qwt-6.1.3\src\src.pro ) && mingw32-make -f Makefile
    mingw32-make[1]: Entering directory 'C:/Qwt-6.1.3/qwt-6.1.3/src'
    mingw32-make -f Makefile.Release all
    mingw32-make[2]: Entering directory 'C:/Qwt-6.1.3/qwt-6.1.3/src'
    compiling qwt_abstract_scale_draw.cpp
    In file included from qwt_abstract_scale_draw.h:15,
    from qwt_abstract_scale_draw.cpp:10:
    qwt_text.h:142:41: **error: 'null' is not a member of 'QString'**
    142 | QwtText( const QString & = QString::null,
    | ^~~~
    mingw32-make[2]: *** [Makefile.Release:5651: release/qwt_abstract_scale_draw.o] Error 1
    mingw32-make[2]: Leaving directory 'C:/Qwt-6.1.3/qwt-6.1.3/src'
    mingw32-make[1]: *** [Makefile:49: release-all] Error 2
    mingw32-make[1]: Leaving directory 'C:/Qwt-6.1.3/qwt-6.1.3/src'
    mingw32-make: *** [Makefile:53: sub-src-make_first-ordered] Error 2

    I'm not sure what that means. I used the location of qtenv2.bat in mingw_64 to set up the Qt command prompt since "Qt version for Desktop" didn't show up for me. I didn't modify anything in the Qwt build or config.pri files, and I'm uncertain if I should have. I'm honestly at a loss about what to do next. Can anyone assist me?
    - Robert -

  3. #3
    Join Date
    Feb 2006
    Location
    Munich, Germany
    Posts
    3,325
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    Qt products
    Qt3 Qt4 Qt/Embedded
    Platforms
    MacOS X Unix/X11 Windows

    Default Re: Stalling Qwt on windows 11

    You need a more recent version of Qwt for Qt 6

    HTH,
    Uwe

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