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How to display .dds files



  • Hello
    I need to display a .dds file in a GUI application (so have it in a QImage or a QPixmap or something like this. Unfortunately, .dds files are not supported since Qt 5.8.0, is there still a simple way to do it ? And if not, I read that the .dds support is commented out in the sources files, so how can I uncomment and compile only the good file without having to compile all of Qt ?
    Thanks for your help and your time.


  • Lifetime Qt Champion

    Hi and welcome to devnet,

    Are you locked to that old version of Qt ? If not, then please update to either the current version or the latest LTS.

    It depends on where that code is. You can simply build only the module that contains it.



  • @SGaist I am using Qt 5.15.0, where can i find the module that contains this ?



  • You need build the plugin yourself since 5.8.0.

    For security reasons, the DDS handler will no longer be built by
    default. Users who still want this handler can build it from the
    source project.

    Which platform are you using?
    If Windows + MinGW, run Qt command prompt from Start Menu and cd to [QtDir]\Src\qtimageformats\src\plugins\imageformats\dds.
    Then run qmake, then mingw32-make install.

    But you should be warned:

    As it stands right now, it's severely bugged and a security minefield (crashes).
    It is also pretty useless in combination with QImage: DDS files are supposed to
    carry multiple individual textures, texture arrays, cubemaps; mipmap chains;
    and may use specific texture compression formats. All these features are not
    supported at all by QImage.



  • @Bonnie thank you !



  • @Bonnie when i run mingw32-make install i have this error : Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:399 : undefined reference to `_imp___ZN11QDataStreamrsERi'
    and a lot more undefined refercences, I did exactly what you said.



  • I haven't installed 5.15 yet, may try that later.
    [EDITED]



  • @Bonnie ok, thanks



  • @Matthieuzone Hi, I tried 5.15.0 and didn't get any error.
    Can you post the full output like this? (run "qmake -v" first to show the Qt version) [ADDED] also run "mingw32-make -v" please

    Setting up environment for Qt usage...
    
    D:\Qt\5.15.0\mingw81_64>qmake -v
    QMake version 3.1
    Using Qt version 5.15.0 in D:/Qt/5.15.0/mingw81_64/lib
    
    D:\Qt\5.15.0\mingw81_64>cd D:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds
    
    D:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds>qmake
    Info: creating stash file D:\Qt\5.15.0\Src\qtimageformats\.qmake.stash
    
    D:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds>mingw32-make install
    mingw32-make -f Makefile.Release install
    mingw32-make[1]: Entering directory 'D:/Qt/5.15.0/Src/qtimageformats/src/plugins/imageformats/dds'
    g++ -c -fno-keep-inline-dllexport -O2 -g -std=c++1z -fno-exceptions -Wall -Wextra -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DQT_NO_LINKED_LIST -DQT_NO_FOREACH -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_LINKED_LIST -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -I. -ID:\Qt\5.15.0\mingw81_64\include -ID:\Qt\5.15.0\mingw81_64\include\QtGui -ID:\Qt\5.15.0\mingw81_64\include\QtANGLE -ID:\Qt\5.15.0\mingw81_64\include\QtCore -I.moc\release -I/include -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.7.25-winx64\include -IC:\Utils\postgresql\pgsql\include -ID:\Qt\5.15.0\mingw81_64\mkspecs\win32-g++  -o .obj\release\ddsheader.o ddsheader.cpp
    g++ -fno-keep-inline-dllexport -O2 -g -std=c++1z -fno-exceptions -Wall -Wextra -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -dM -E -o .moc\release\moc_predefs.h D:\Qt\5.15.0\mingw81_64\mkspecs\features\data\dummy.cpp
    D:\Qt\5.15.0\mingw81_64\bin\moc.exe -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DQT_NO_LINKED_LIST -DQT_NO_FOREACH -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_LINKED_LIST -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB --include D:/Qt/5.15.0/Src/qtimageformats/src/plugins/imageformats/dds/.moc/release/moc_predefs.h -ID:/Qt/5.15.0/mingw81_64/mkspecs/win32-g++ -ID:/Qt/5.15.0/Src/qtimageformats/src/plugins/imageformats/dds -ID:/Qt/5.15.0/mingw81_64/include -ID:/Qt/5.15.0/mingw81_64/include/QtGui -ID:/Qt/5.15.0/mingw81_64/include/QtANGLE -ID:/Qt/5.15.0/mingw81_64/include/QtCore -ID:/Qt/Tools/mingw810_64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++ -ID:/Qt/Tools/mingw810_64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/x86_64-w64-mingw32 -ID:/Qt/Tools/mingw810_64/lib/gcc/x86_64-w64-mingw32/8.1.0/include/c++/backward -ID:/Qt/Tools/mingw810_64/lib/gcc/x86_64-w64-mingw32/8.1.0/include -ID:/Qt/Tools/mingw810_64/lib/gcc/x86_64-w64-mingw32/8.1.0/include-fixed -ID:/Qt/Tools/mingw810_64/x86_64-w64-mingw32/include main.cpp -o .moc\release\main.moc
    g++ -c -fno-keep-inline-dllexport -O2 -g -std=c++1z -fno-exceptions -Wall -Wextra -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DQT_NO_LINKED_LIST -DQT_NO_FOREACH -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_LINKED_LIST -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -I. -ID:\Qt\5.15.0\mingw81_64\include -ID:\Qt\5.15.0\mingw81_64\include\QtGui -ID:\Qt\5.15.0\mingw81_64\include\QtANGLE -ID:\Qt\5.15.0\mingw81_64\include\QtCore -I.moc\release -I/include -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.7.25-winx64\include -IC:\Utils\postgresql\pgsql\include -ID:\Qt\5.15.0\mingw81_64\mkspecs\win32-g++  -o .obj\release\main.o main.cpp
    main.cpp: In member function 'virtual QImageIOPlugin::Capabilities QDDSPlugin::capabilities(QIODevice*, const QByteArray&) const':
    main.cpp:65:16: warning: 'constexpr QFlags<T>::QFlags(QFlags<T>::Zero) [with Enum = QImageIOPlugin::Capability; QFlags<T>::Zero = int QFlags<QImageIOPlugin::Capability>::Private::*]' is deprecated: Use default constructor instead [-Wdeprecated-declarations]
             return 0;
                    ^
    In file included from D:\Qt\5.15.0\mingw81_64\include/QtCore/qglobal.h:1302,
                     from D:\Qt\5.15.0\mingw81_64\include/QtGui/qtguiglobal.h:43,
                     from D:\Qt\5.15.0\mingw81_64\include/QtGui/qimageiohandler.h:43,
                     from main.cpp:41:
    D:\Qt\5.15.0\mingw81_64\include/QtCore/qflags.h:123:80: note: declared here
         QT_DEPRECATED_X("Use default constructor instead") Q_DECL_CONSTEXPR inline QFlags(Zero) noexcept : i(0) {}
                                                                                    ^~~~~~
    main.cpp:67:16: warning: 'constexpr QFlags<T>::QFlags(QFlags<T>::Zero) [with Enum = QImageIOPlugin::Capability; QFlags<T>::Zero = int QFlags<QImageIOPlugin::Capability>::Private::*]' is deprecated: Use default constructor instead [-Wdeprecated-declarations]
             return 0;
                    ^
    In file included from D:\Qt\5.15.0\mingw81_64\include/QtCore/qglobal.h:1302,
                     from D:\Qt\5.15.0\mingw81_64\include/QtGui/qtguiglobal.h:43,
                     from D:\Qt\5.15.0\mingw81_64\include/QtGui/qimageiohandler.h:43,
                     from main.cpp:41:
    D:\Qt\5.15.0\mingw81_64\include/QtCore/qflags.h:123:80: note: declared here
         QT_DEPRECATED_X("Use default constructor instead") Q_DECL_CONSTEXPR inline QFlags(Zero) noexcept : i(0) {}
                                                                                    ^~~~~~
    g++ -c -fno-keep-inline-dllexport -O2 -g -std=c++1z -fno-exceptions -Wall -Wextra -Wextra -Wvla -Wdate-time -Wshift-overflow=2 -Wduplicated-cond -Wno-stringop-overflow -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DQT_NO_LINKED_LIST -DQT_NO_FOREACH -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_LINKED_LIST -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -I. -ID:\Qt\5.15.0\mingw81_64\include -ID:\Qt\5.15.0\mingw81_64\include\QtGui -ID:\Qt\5.15.0\mingw81_64\include\QtANGLE -ID:\Qt\5.15.0\mingw81_64\include\QtCore -I.moc\release -I/include -IC:\openssl\include -IC:\Utils\my_sql\mysql-5.7.25-winx64\include -IC:\Utils\postgresql\pgsql\include -ID:\Qt\5.15.0\mingw81_64\mkspecs\win32-g++  -o .obj\release\qddshandler.o qddshandler.cpp
    windres -i qdds_resource.rc -o .obj\release\qdds_resource_res.o --include-dir=. -DUNICODE -D_UNICODE -DWIN32 -DMINGW_HAS_SECURE_API=1 -DWINVER=0x0601 -D_WIN32_WINNT=0x0601 -DQT_NO_LINKED_LIST -DQT_NO_FOREACH -DQT_NO_JAVA_STYLE_ITERATORS -DQT_NO_LINKED_LIST -DQT_DEPRECATED_WARNINGS -DQT_NO_NARROWING_CONVERSIONS_IN_CONNECT -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB
    g++ -shared -Wl,-subsystem,windows -Wl,--out-implib,D:\Qt\5.15.0\Src\qtimageformats\plugins\imageformats\libqdds.a -o ..\..\..\..\plugins\imageformats\qdds.dll .obj/release/ddsheader.o .obj/release/main.o .obj/release/qddshandler.o  -LC:\openssl\lib -LC:\Utils\my_sql\mysql-5.7.25-winx64\lib -LC:\Utils\postgresql\pgsql\lib D:\Qt\5.15.0\mingw81_64\lib\libQt5Gui.a D:\Qt\5.15.0\mingw81_64\lib\libQt5Core.a .obj\release\qdds_resource_res.o
    objcopy --only-keep-debug ../../../../plugins/imageformats/qdds.dll ../../../../plugins/imageformats/qdds.dll.debug && objcopy --strip-debug ../../../../plugins/imageformats/qdds.dll && objcopy --add-gnu-debuglink=../../../../plugins/imageformats/qdds.dll.debug ../../../../plugins/imageformats/qdds.dll
    D:\Qt\5.15.0\mingw81_64\bin\qmake.exe -install qinstall D:\Qt\5.15.0\Src\qtimageformats\plugins\imageformats\qdds.dll.debug D:\Qt\5.15.0\mingw81_64\plugins\imageformats\qdds.dll.debug
    copy /y ..\..\..\..\plugins\imageformats\qdds.dll D:\Qt\5.15.0\mingw81_64\plugins\imageformats\qdds.dll
    已复制         1 个文件。
    D:\Qt\5.15.0\mingw81_64\bin\qmake.exe -install qinstall D:\Qt\5.15.0\Src\qtimageformats\lib\cmake\Qt5Gui\Qt5Gui_QDDSPlugin.cmake D:\Qt\5.15.0\mingw81_64\lib\cmake\Qt5Gui\Qt5Gui_QDDSPlugin.cmake
    mingw32-make[1]: Leaving directory 'D:/Qt/5.15.0/Src/qtimageformats/src/plugins/imageformats/dds'
    


  • @Bonnie Here's the output. I have to post it in multiple times because it's too long. It looks like qmake did nothing. I don't know if it matters but I have installed Qt from the installer and not by compiling the sources.

    Setting up environment for Qt usage...
    
    C:\Qt\5.15.0\mingw81_64>qmake -v
    QMake version 3.1
    Using Qt version 5.15.0 in C:/Qt/5.15.0/mingw81_64/lib
    
    C:\Qt\5.15.0\mingw81_64>mingw32-make -v
    GNU Make 4.2.1
    Built for x86_64-w64-mingw32
    Copyright (C) 1988-2016 Free Software Foundation, Inc.
    License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
    This is free software: you are free to change and redistribute it.
    There is NO WARRANTY, to the extent permitted by law.
    
    C:\Qt\5.15.0\mingw81_64>cd ../Scr
    The system cannot find the path specified.
    
    C:\Qt\5.15.0\mingw81_64>cd ../src
    
    C:\Qt\5.15.0\Src>cd qtimageformats\src\plugins\imageformats\dds
    
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds>qmake
    
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds>mingw32-make install
    mingw32-make -f Makefile.Release install
    mingw32-make[1]: Entering directory 'C:/Qt/5.15.0/Src/qtimageformats/src/plugins/imageformats/dds'
    g++ -shared -Wl,-subsystem,windows -Wl,--out-implib,C:\Qt\5.15.0\Src\qtimageformats\plugins\imageformats\libqdds.a -o ..\..\..\..\plugins\imageformats\qdds.dll .obj/release/ddsheader.o .obj/release/main.o .obj/release/qddshandler.o  -LC:\openssl\lib -LC:\Utils\my_sql\mysql-5.7.25-winx64\lib -LC:\Utils\postgresql\pgsql\lib C:\Qt\5.15.0\mingw81_64\lib\libQt5Gui.a C:\Qt\5.15.0\mingw81_64\lib\libQt5Core.a .obj\release\qdds_resource_res.o
    C:/Qt/Tools/mingw810_64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: Cannot export qt_plugin_instance: symbol not found
    C:/Qt/Tools/mingw810_64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: Cannot export qt_plugin_query_metadata: symbol not found
    C:/Qt/Tools/mingw810_64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: i386 architecture of input file `.obj/release/ddsheader.o' is incompatible with i386:x86-64 output
    C:/Qt/Tools/mingw810_64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: i386 architecture of input file `.obj/release/main.o' is incompatible with i386:x86-64 output
    C:/Qt/Tools/mingw810_64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: i386 architecture of input file `.obj/release/qddshandler.o' is incompatible with i386:x86-64 output
    C:/Qt/Tools/mingw810_64/bin/../lib/gcc/x86_64-w64-mingw32/8.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: i386 architecture of input file `.obj\release\qdds_resource_res.o' is incompatible with i386:x86-64 output
    .obj/release/ddsheader.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:387: undefined reference to `__imp___ZN11QDataStreamrsERi'
    .obj/release/ddsheader.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:399: undefined reference to `__imp___ZN11QDataStreamlsEi'
    .obj/release/ddsheader.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:387: undefined reference to `__imp___ZN11QDataStreamrsERi'
    .obj/release/ddsheader.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:399: undefined reference to `__imp___ZN11QDataStreamlsEi'
    .obj/release/ddsheader.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:387: undefined reference to `__imp___ZN11QDataStreamrsERi'
    .obj/release/ddsheader.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:399: undefined reference to `__imp___ZN11QDataStreamlsEi'
    .obj/release/main.o: In function `QDDSPlugin::create(QIODevice*, QByteArray const&) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:79: undefined reference to `__Znwj'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:80: undefined reference to `__imp___ZN15QImageIOHandler9setDeviceEP9QIODevice'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:81: undefined reference to `__imp___ZN15QImageIOHandler9setFormatERK10QByteArray'
    .obj/release/main.o: In function `QDDSPlugin::metaObject() const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/.moc/release/main.moc:78: undefined reference to `__imp___ZNK11QObjectData17dynamicMetaObjectEv'
    .obj/release/main.o: In function `QDDSPlugin::capabilities(QIODevice*, QByteArray const&) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:66: undefined reference to `__imp___ZNK9QIODevice6isOpenEv'
    .obj/release/main.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/main.o: In function `QDDSPlugin::capabilities(QIODevice*, QByteArray const&) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:70: undefined reference to `__imp___ZNK9QIODevice10isReadableEv'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:72: undefined reference to `__imp___ZNK9QIODevice10isWritableEv'
    .obj/release/main.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qsharedpointer_impl.h:158: undefined reference to `__ZdlPv'
    .obj/release/main.o: In function `qt_plugin_instance':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/.moc/release/main.moc:120: undefined reference to `__Znwj'
    .obj/release/main.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:51: undefined reference to `__imp___ZN14QImageIOPluginC2EP7QObject'
    .obj/release/main.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qsharedpointer_impl.h:682: undefined reference to `__imp___ZN15QtSharedPointer20ExternalRefCountData9getAndRefEPK7QObject'
    .obj/release/main.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qsharedpointer_impl.h:158: undefined reference to `__ZdlPv'
    .obj/release/main.o: In function `qt_plugin_instance':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/.moc/release/main.moc:120: undefined reference to `___cxa_guard_acquire'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/.moc/release/main.moc:120: undefined reference to `___cxa_guard_release'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/.moc/release/main.moc:120: undefined reference to `_atexit'
    .obj/release/main.o: In function `QDDSPlugin::qt_metacast(char const*)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/.moc/release/main.moc:84: undefined reference to `_strcmp'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/.moc/release/main.moc:86: undefined reference to `__imp___ZN14QImageIOPlugin11qt_metacastEPKc'
    .obj/release/main.o: In function `QDDSPlugin::qt_metacall(QMetaObject::Call, int, void**)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/.moc/release/main.moc:91: undefined reference to `__imp___ZN14QImageIOPlugin11qt_metacallEN11QMetaObject4CallEiPPv'
    .obj/release/main.o: In function `QDDSPlugin::~QDDSPlugin()':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:51: undefined reference to `__imp___ZN14QImageIOPluginD2Ev'
    .obj/release/main.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:51: undefined reference to `__imp___ZN14QImageIOPluginD2Ev'
    .obj/release/main.o: In function `QDDSPlugin::~QDDSPlugin()':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/main.cpp:51: undefined reference to `__ZdlPvj'
    .obj/release/main.o: In function `__static_initialization_and_destruction_0':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/.moc/release/main.moc:67: undefined reference to `__imp___ZN14QImageIOPlugin16staticMetaObjectE'
    .obj/release/main.o:main.cpp:(.rdata$_ZTI7QObject[__ZTI7QObject]+0x0): undefined reference to `__ZTVN10__cxxabiv117__class_type_infoE'
    .obj/release/main.o:main.cpp:(.rdata$_ZTI14QImageIOPlugin[__ZTI14QImageIOPlugin]+0x0): undefined reference to `__ZTVN10__cxxabiv120__si_class_type_infoE'
    .obj/release/main.o:main.cpp:(.rdata$_ZTI10QDDSPlugin[__ZTI10QDDSPlugin]+0x0): undefined reference to `__ZTVN10__cxxabiv120__si_class_type_infoE'
    .obj/release/main.o:main.cpp:(.rdata$_ZTV10QDDSPlugin[__ZTV10QDDSPlugin]+0x1c): undefined reference to `__ZN7QObject5eventEP6QEvent'
    .obj/release/main.o:main.cpp:(.rdata$_ZTV10QDDSPlugin[__ZTV10QDDSPlugin]+0x20): undefined reference to `__ZN7QObject11eventFilterEPS_P6QEvent'
    .obj/release/main.o:main.cpp:(.rdata$_ZTV10QDDSPlugin[__ZTV10QDDSPlugin]+0x24): undefined reference to `__ZN7QObject10timerEventEP11QTimerEvent'
    .obj/release/main.o:main.cpp:(.rdata$_ZTV10QDDSPlugin[__ZTV10QDDSPlugin]+0x28): undefined reference to `__ZN7QObject10childEventEP11QChildEvent'
    .obj/release/main.o:main.cpp:(.rdata$_ZTV10QDDSPlugin[__ZTV10QDDSPlugin]+0x2c): undefined reference to `__ZN7QObject11customEventEP6QEvent'
    .obj/release/main.o:main.cpp:(.rdata$_ZTV10QDDSPlugin[__ZTV10QDDSPlugin]+0x30): undefined reference to `__ZN7QObject13connectNotifyERK11QMetaMethod'
    .obj/release/main.o:main.cpp:(.rdata$_ZTV10QDDSPlugin[__ZTV10QDDSPlugin]+0x34): undefined reference to `__ZN7QObject16disconnectNotifyERK11QMetaMethod'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:384: undefined reference to `__imp___ZN11QDataStreamrsERs'
    .obj/release/qddshandler.o:C:/Program Files (x86)/mingw-w64/i686-8.1.0-posix-dwarf-rt_v6-rev0/mingw32/lib/gcc/i686-w64-mingw32/8.1.0/include/c++/cmath:418: undefined reference to `_pow'
    .obj/release/qddshandler.o: In function `formatName':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1359: undefined reference to `__imp___ZN10QByteArrayC1EPKci'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1362: undefined reference to `__imp___ZN10QByteArrayC1EPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qlist.h:923: undefined reference to `__imp___ZN9QListData7disposeEPNS_4DataE'
    .obj/release/qddshandler.o: In function `readUnsignedImage':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:631: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:635: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:381: undefined reference to `__imp___ZN11QDataStreamrsERa'
    .obj/release/qddshandler.o: In function `QDDSHandler::setOption(QImageIOHandler::ImageOption, QVariant const&)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1499: undefined reference to `__imp___ZNK8QVariant11toByteArrayEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qbytearray.h:279: undefined reference to `__imp___ZN10QByteArray14toUpper_helperERKS_'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qbytearray.h:275: undefined reference to `__imp___ZN10QByteArray14toLower_helperERKS_'
    .obj/release/qddshandler.o: In function `formatByName':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1369: undefined reference to `__imp___ZN10QByteArrayC1EPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qbytearray.h:277: undefined reference to `__imp___ZN10QByteArray14toLower_helperERS_'
    .obj/release/qddshandler.o: In function `operator==(QByteArray const&, QByteArray const&)':
    C:/Qt/5.15.0/mingw81_64/include/QtCore/qbytearray.h:677: undefined reference to `_memcmp'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o: In function `QDDSHandler::setOption(QImageIOHandler::ImageOption, QVariant const&)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1502: undefined reference to `__imp___ZNK14QMessageLogger7warningEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qstring.h:701: undefined reference to `__imp___ZN7QString15fromUtf8_helperEPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:159: undefined reference to `__imp___ZN11QTextStreamlsERK7QString'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:166: undefined reference to `__imp___ZN6QDebug12putByteArrayEPKcjNS_13Latin1ContentE'
    .obj/release/qddshandler.o: In function `QDDSHandler::setOption(QImageIOHandler::ImageOption, QVariant const&)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1502: undefined reference to `__imp___ZN6QDebugD1Ev'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o: In function `readR32F':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:744: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:746: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:748: undefined reference to `__imp___ZN11QDataStream25setFloatingPointPrecisionENS_22FloatingPointPrecisionE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:748: undefined reference to `__imp___ZN11QDataStreamrsERf'
    .obj/release/qddshandler.o: In function `readFloat32':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:686: undefined reference to `__imp___ZNK11QDataStream22floatingPointPrecisionEv'
    .obj/release/qddshandler.o: In function `readCxV8U8':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:812: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:814: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:816: undefined reference to `__imp___ZN11QDataStreamrsERa'
    .obj/release/qddshandler.o: In function `readATI2':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:574: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:577: undefined reference to `__imp___ZN11QDataStreamrsERx'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:594: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readG8R8G8B8':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1071: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1073: undefined reference to `__imp___ZN11QDataStreamrsERa'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1082: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readUYVY':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1009: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1012: undefined reference to `__imp___ZN11QDataStreamrsERa'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1021: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readDXT<(DXTVersions)3>':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:507: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERs'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERx'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:527: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readA2W10V10U10':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:987: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:990: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:387: undefined reference to `__imp___ZN11QDataStreamrsERi'
    .obj/release/qddshandler.o: In function `readR16F':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:695: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:697: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readV8U8':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:898: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:900: undefined reference to `__imp___ZN11QDataStreamrsERa'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:900: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readARGB16':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:878: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:880: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:882: undefined reference to `__imp___ZN11QDataStreamrsERs'
    .obj/release/qddshandler.o: In function `readLayer':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1213: undefined reference to `__imp___ZN6QImageC1Ev'
    .obj/release/qddshandler.o: In function `readA2R10G10B10':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1092: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1092: undefined reference to `__imp___ZNK6QImage5pixelEii'
    .obj/release/qddshandler.o: In function `readLayer':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1213: undefined reference to `__imp___ZN6QImageC1Ev'
    .obj/release/qddshandler.o: In function `readV16U16':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:969: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:971: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:972: undefined reference to `__imp___ZN11QDataStreamrsERs'
    .obj/release/qddshandler.o: In function `readX8L8V8U8':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:932: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:932: undefined reference to `__imp___ZN11QDataStreamrsERa'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:936: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readDXT<(DXTVersions)5>':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:507: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERs'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERx'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:527: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readYUY2':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1050: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1053: undefined reference to `__imp___ZN11QDataStreamrsERa'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1062: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readQ16W16V16U16':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:792: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:796: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:798: undefined reference to `__imp___ZN11QDataStreamrsERs'
    .obj/release/qddshandler.o: In function `readARGB16F':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:726: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:728: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readARGB32F':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:775: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:777: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:779: undefined reference to `__imp___ZN11QDataStream25setFloatingPointPrecisionENS_22FloatingPointPrecisionE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:779: undefined reference to `__imp___ZN11QDataStreamrsERf'
    .obj/release/qddshandler.o: In function `readFloat32':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:686: undefined reference to `__imp___ZNK11QDataStream22floatingPointPrecisionEv'
    .obj/release/qddshandler.o: In function `readR8G8B8G8':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1030: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1032: undefined reference to `__imp___ZN11QDataStreamrsERa'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1041: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readDXT<(DXTVersions)1>':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:507: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERs'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:528: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readL6V5U5':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:914: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:917: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:384: undefined reference to `__imp___ZN11QDataStreamrsERs'
    .obj/release/qddshandler.o: In function `readDXT<(DXTVersions)6>':
    
    


  • @Bonnie

    
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:507: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERs'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERx'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:527: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readDXT<(DXTVersions)4>':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:507: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERs'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERx'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:527: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readPalette8Image':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:833: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:833: undefined reference to `__imp___ZN11QDataStreamrsERa'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:833: undefined reference to `__imp___ZN6QImage8setColorEij'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:840: undefined reference to `__imp___ZN6QImage8setPixelEiij'
    .obj/release/qddshandler.o: In function `readDXT<(DXTVersions)2>':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:507: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERs'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:510: undefined reference to `__imp___ZN11QDataStreamrsERx'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:527: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readRG32F':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:759: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:761: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:763: undefined reference to `__imp___ZN11QDataStream25setFloatingPointPrecisionENS_22FloatingPointPrecisionE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:763: undefined reference to `__imp___ZN11QDataStreamrsERf'
    .obj/release/qddshandler.o: In function `readFloat32':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:686: undefined reference to `__imp___ZNK11QDataStream22floatingPointPrecisionEv'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:686: undefined reference to `__imp___ZNK11QDataStream22floatingPointPrecisionEv'
    .obj/release/qddshandler.o: In function `readRG16F':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:710: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:712: undefined reference to `__imp___ZN6QImage8scanLineEi'
    .obj/release/qddshandler.o: In function `readPalette4Image':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:853: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:853: undefined reference to `__imp___ZN11QDataStreamrsERa'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:853: undefined reference to `__imp___ZN6QImage8setColorEij'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:862: undefined reference to `__imp___ZN6QImage8setPixelEiij'
    .obj/release/qddshandler.o: In function `readQ8W8V8U8':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:949: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:953: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:957: undefined reference to `__imp___ZN11QDataStreamrsERa'
    .obj/release/qddshandler.o: In function `getNormalZ':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:350: undefined reference to `_sqrt'
    .obj/release/qddshandler.o: In function `readCxV8U8':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:350: undefined reference to `_sqrt'
    .obj/release/qddshandler.o: In function `QDDSHandler::QDDSHandler()':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1381: undefined reference to `__imp___ZN15QImageIOHandlerC2Ev'
    .obj/release/qddshandler.o: In function `QDDSHandler::canRead(QIODevice*)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1540: undefined reference to `__imp___ZN9QIODevice4peekEx'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o: In function `QDDSHandler::canRead(QIODevice*)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1533: undefined reference to `__imp___ZNK14QMessageLogger7warningEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qstring.h:701: undefined reference to `__imp___ZN7QString15fromUtf8_helperEPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:159: undefined reference to `__imp___ZN11QTextStreamlsERK7QString'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o: In function `QDDSHandler::canRead(QIODevice*)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1533: undefined reference to `__imp___ZN6QDebugD1Ev'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o: In function `QDDSHandler::canRead() const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1391: undefined reference to `__imp___ZNK15QImageIOHandler9setFormatERK10QByteArray'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1387: undefined reference to `__imp___ZNK15QImageIOHandler6deviceEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o: In function `QDDSHandler::verifyHeader(DDSHeader const&) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1595: undefined reference to `__imp___ZNK14QMessageLogger7warningEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qstring.h:701: undefined reference to `__imp___ZN7QString15fromUtf8_helperEPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:159: undefined reference to `__imp___ZN11QTextStreamlsERK7QString'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:152: undefined reference to `__imp___ZN11QTextStreamlsEj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o: In function `QDDSHandler::verifyHeader(DDSHeader const&) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1589: undefined reference to `__imp___ZNK14QMessageLogger7warningEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qstring.h:701: undefined reference to `__imp___ZN7QString15fromUtf8_helperEPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:159: undefined reference to `__imp___ZN11QTextStreamlsERK7QString'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:152: undefined reference to `__imp___ZN11QTextStreamlsEj'
    .obj/release/qddshandler.o: In function `QDDSHandler::verifyHeader(DDSHeader const&) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1607: undefined reference to `__imp___ZN6QDebugD1Ev'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o: In function `QDDSHandler::verifyHeader(DDSHeader const&) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1607: undefined reference to `__imp___ZNK14QMessageLogger7warningEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qstring.h:701: undefined reference to `__imp___ZN7QString15fromUtf8_helperEPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:159: undefined reference to `__imp___ZN11QTextStreamlsERK7QString'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o: In function `QDDSHandler::verifyHeader(DDSHeader const&) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1601: undefined reference to `__imp___ZNK14QMessageLogger7warningEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qstring.h:701: undefined reference to `__imp___ZN7QString15fromUtf8_helperEPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:159: undefined reference to `__imp___ZN11QTextStreamlsERK7QString'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:152: undefined reference to `__imp___ZN11QTextStreamlsEj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1553: undefined reference to `__imp___ZNK15QImageIOHandler6deviceEv'
    .obj/release/qddshandler.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1561: undefined reference to `__imp___ZN11QDataStreamC1EP9QIODevice'
    .obj/release/qddshandler.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1562: undefined reference to `__imp___ZN11QDataStream12setByteOrderENS_9ByteOrderE'
    .obj/release/qddshandler.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1569: undefined reference to `__imp___ZNK11QDataStream6statusEv'
    .obj/release/qddshandler.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1561: undefined reference to `__imp___ZN11QDataStreamD1Ev'
    .obj/release/qddshandler.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1554: undefined reference to `__imp___ZNK14QMessageLogger7warningEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qstring.h:701: undefined reference to `__imp___ZN7QString15fromUtf8_helperEPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:159: undefined reference to `__imp___ZN11QTextStreamlsERK7QString'
    .obj/release/qddshandler.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1554: undefined reference to `__imp___ZN6QDebugD1Ev'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o: In function `QDDSHandler::option(QImageIOHandler::ImageOption) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1484: undefined reference to `__imp___ZN8QVariantC1ERK5QSize'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qlist.h:160: undefined reference to `__imp___ZN9QListData11shared_nullE'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qvariant.h:371: undefined reference to `__imp___ZN8QVariantC1EiPKvj'
    .obj/release/qddshandler.o: In function `QDDSHandler::option(QImageIOHandler::ImageOption) const':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1486: undefined reference to `__imp___ZN8QVariantC1ERK10QByteArray'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qlist.h:643: undefined reference to `__imp___ZN9QListData6appendEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o: In function `QDDSHandler::read(QImage*)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1400: undefined reference to `__imp___ZNK15QImageIOHandler6deviceEv'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1406: undefined reference to `__imp___ZN11QDataStreamC1EP9QIODevice'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1407: undefined reference to `__imp___ZN11QDataStream12setByteOrderENS_9ByteOrderE'
    .obj/release/qddshandler.o: In function `readCubeMap':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1330: undefined reference to `__imp___ZN6QImageC1EiiNS_6FormatE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1332: undefined reference to `__imp___ZN6QImage4fillEj'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1332: undefined reference to `__imp___ZN6QImageD1Ev'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1346: undefined reference to `__imp___ZNK6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1347: undefined reference to `__imp___ZN6QImage8scanLineEi'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1348: undefined reference to `_memcpy'
    .obj/release/qddshandler.o: In function `readTexture':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1220: undefined reference to `__imp___ZN6QImageD1Ev'
    .obj/release/qddshandler.o: In function `QDDSHandler::read(QImage*)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1413: undefined reference to `__imp___ZNK11QDataStream6statusEv'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1406: undefined reference to `__imp___ZN11QDataStreamD1Ev'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1413: undefined reference to `__imp___ZNK6QImage6isNullEv'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1415: undefined reference to `__imp___ZN6QImageaSERKS_'
    .obj/release/qddshandler.o: In function `QDDSHandler::write(QImage const&)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1422: undefined reference to `__imp___ZNK14QMessageLogger7warningEv'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qstring.h:701: undefined reference to `__imp___ZN7QString15fromUtf8_helperEPKci'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:159: undefined reference to `__imp___ZN11QTextStreamlsERK7QString'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:166: undefined reference to `__imp___ZN6QDebug12putByteArrayEPKcjNS_13Latin1ContentE'
    .obj/release/qddshandler.o: In function `QDDSHandler::write(QImage const&)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1422: undefined reference to `__imp___ZN6QDebugD1Ev'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qarraydata.h:239: undefined reference to `__imp___ZN10QArrayData10deallocateEPS_jj'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtGui/qimage.h:184: undefined reference to `__imp___ZNK6QImage22convertToFormat_helperENS_6FormatE6QFlagsIN2Qt19ImageConversionFlagEE'
    .obj/release/qddshandler.o: In function `QDDSHandler::write(QImage const&)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1428: undefined reference to `__imp___ZNK15QImageIOHandler6deviceEv'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1428: undefined reference to `__imp___ZN11QDataStreamC1EP9QIODevice'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1429: undefined reference to `__imp___ZN11QDataStream12setByteOrderENS_9ByteOrderE'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1437: undefined reference to `__imp___ZNK6QImage6heightEv'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1438: undefined reference to `__imp___ZNK6QImage5widthEv'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1463: undefined reference to `__imp___ZNK6QImage5pixelEii'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdatastream.h:399: undefined reference to `__imp___ZN11QDataStreamlsEi'
    .obj/release/qddshandler.o: In function `QDDSHandler::write(QImage const&)':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1428: undefined reference to `__imp___ZN11QDataStreamD1Ev'
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.cpp:1426: undefined reference to `__imp___ZN6QImageD1Ev'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o:C:/Qt/5.15.0/mingw81_64/include/QtCore/qdebug.h:129: undefined reference to `__imp___ZN11QTextStreamlsEc'
    .obj/release/qddshandler.o: In function `QDDSHandler::~QDDSHandler()':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.h:51: undefined reference to `__imp___ZN15QImageIOHandlerD2Ev'
    .obj/release/qddshandler.o:C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.h:51: undefined reference to `__imp___ZN15QImageIOHandlerD2Ev'
    .obj/release/qddshandler.o: In function `QDDSHandler::~QDDSHandler()':
    C:\Qt\5.15.0\Src\qtimageformats\src\plugins\imageformats\dds/qddshandler.h:51: undefined reference to `__ZdlPvj'
    .obj/release/qddshandler.o: In function `QList<QByteArray>::detach_helper_grow(int, int)':
    C:/Qt/5.15.0/mingw81_64/include/QtCore/qlist.h:803: undefined reference to `__imp___ZN9QListData11detach_growEPii'
    .obj/release/qddshandler.o:qddshandler.cpp:(.rdata$_ZTI15QImageIOHandler[__ZTI15QImageIOHandler]+0x0): undefined reference to `__ZTVN10__cxxabiv117__class_type_infoE'
    .obj/release/qddshandler.o:qddshandler.cpp:(.rdata$_ZTI11QDDSHandler[__ZTI11QDDSHandler]+0x0): undefined reference to `__ZTVN10__cxxabiv120__si_class_type_infoE'
    .obj/release/qddshandler.o:qddshandler.cpp:(.rdata$_ZTV11QDDSHandler[__ZTV11QDDSHandler]+0x10): undefined reference to `__ZNK15QImageIOHandler4nameEv'
    .obj/release/qddshandler.o:qddshandler.cpp:(.rdata$_ZTV11QDDSHandler[__ZTV11QDDSHandler]+0x2c): undefined reference to `__ZN15QImageIOHandler15jumpToNextImageEv'
    .obj/release/qddshandler.o:qddshandler.cpp:(.rdata$_ZTV11QDDSHandler[__ZTV11QDDSHandler]+0x34): undefined reference to `__ZNK15QImageIOHandler9loopCountEv'
    .obj/release/qddshandler.o:qddshandler.cpp:(.rdata$_ZTV11QDDSHandler[__ZTV11QDDSHandler]+0x3c): undefined reference to `__ZNK15QImageIOHandler14nextImageDelayEv'
    .obj/release/qddshandler.o:qddshandler.cpp:(.rdata$_ZTV11QDDSHandler[__ZTV11QDDSHandler]+0x40): undefined reference to `__ZNK15QImageIOHandler18currentImageNumberEv'
    .obj/release/qddshandler.o:qddshandler.cpp:(.rdata$_ZTV11QDDSHandler[__ZTV11QDDSHandler]+0x44): undefined reference to `__ZNK15QImageIOHandler16currentImageRectEv'
    collect2.exe: error: ld returned 1 exit status
    mingw32-make[1]: *** [Makefile.Release:75: ../../../../plugins/imageformats/qdds.dll] Error 1
    mingw32-make[1]: Leaving directory 'C:/Qt/5.15.0/Src/qtimageformats/src/plugins/imageformats/dds'
    mingw32-make: *** [Makefile:55: release-install] Error 2
    


  • @Matthieuzone Your qmake does not has output because you already run it, so it won't create new stash file, that doesn't matter.
    But your mingw32-make output only has the link part.
    Run "mingw32-make clean" first to clean the compiled files, then "mingw32-make install" again.



  • @Bonnie
    Thank you very much, it worked perfectly.


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