[Qgis-developer] Fwd: [Qt5] Compilation problems on windows

[Richard Duivenvoorde]

Hi Anatoliy,

I'm not in the position to comment on the actual problems, sorry.

But can you please try QGIS master in the same setting?

Because that is the branch where all energy is put into at the moment.
2.18 had some experimental work for compiling with qt5 but is actually 
qt4, but in current master we go Qt5 all the way...

Regards,

Richard Duivenvoorde

On 14-11-16 23:54, Anatoliy Golubev wrote:
> ---------- Forwarded message ----------
> From: Anatoliy Golubev <darth.naihil at gmail.com>
> Date: 2016-11-15 1:49 GMT+03:00
> Subject: [Qt5] Compilation problems on windows
> To: qgis-developer <qgis-developer at lists.osgeo.org>
>
>
> Hi devs!
>
> I compiled QGIS 2.18 with Qt 5.3.2 and Visual Studio 2013. There are
> some problems:
>
> 0. VS 2013 dont support `noexcept` keyword and throws
> qgsfield.h(383): error C3646: 'noexcept' : unknown override specifier
>
> Setting USE_CXX_11 to FALSE manually lead to following error:
> 3>  Generating ui_qgsrelationreferenceconfigdlgbase.h
> 4>C:\Program Files (x86)\Microsoft Visual Studio
> 12.0\VC\include\xkeycheck.h(211): warning C4005: 'noexcept' : macro
> redefinition
> 4>          command-line arguments :  see previous definition of 'noexcept'
> 4>C:\Program Files (x86)\Microsoft Visual Studio
> 12.0\VC\include\xkeycheck.h(212): warning C4005: 'nullptr' : macro
> redefinition
> 4>          command-line arguments :  see previous definition of 'nullptr'
> 4>C:\Program Files (x86)\Microsoft Visual Studio
> 12.0\VC\include\xkeycheck.h(246): warning C4005: 'override' : macro
> redefinition
> 4>          command-line arguments :  see previous definition of 'override'
> 4>C:\Program Files (x86)\Microsoft Visual Studio
> 12.0\VC\include\xkeycheck.h(250): fatal error C1189: #error :  The C++
> Standard Library forbids macroizing keywords. Enable warning C4005 to
> find the forbidden macro.
>
> I added this defines to CMakeLists.txt to disable C1189 error and
> redefine only noexcept:
> ELSEIF (MSVC AND MSVC_VERSION GREATER 1600)
>   SET(USE_CXX_11 TRUE)
> +  ADD_DEFINITIONS("-D_ALLOW_KEYWORD_MACROS=1")
> +  ADD_DEFINITIONS("-Dnoexcept=")
>
> 1. Q_WS_* macroses changed to Q_OS_* in Qt5
> Q_WS_WIN macro in 'src/core/geometry/qgsgeometry.cpp:48' breaks
> compilation on Windows.
>
> 2. Linking of all executables fails with:
> 2>MSVCRT.lib(crtexew.obj) : error LNK2019: unresolved external symbol
> _WinMain at 16 referenced in function ___tmainCRTStartup
> 2>D:\Projects\QGIS\build\output\Release\qgis_help.exe : fatal error
> LNK1120: 1 unresolved externals
>
> It is related to CMake Warning:
> CMake Warning (dev) in src/helpviewer/CMakeLists.txt:
>   Policy CMP0020 is not set: Automatically link Qt executables to qtmain
>   target on Windows.  Run "cmake --help-policy CMP0020" for policy details.
>   Use the cmake_policy command to set the policy and suppress this warning.
>
> Added 'CMAKE_POLICY (SET CMP0020 NEW)' to following files:
> - src/app/CMakeLists.txt
> - src/browser/CMakeLists.txt
> - src/helpviewer/CmakeLists.txt
>
> Setting this to root CMakeLists.txt has no effect, dont know why.
>
> 3. Running debug build fails with assert in method 'void
> QgsMapLayerModel::addLayers( const QList<QgsMapLayer *>& layers )'
> line 96 (layers list is empty).
> qgis output - http://pastebin.com/zaHv0hpz
> call stack - http://pastebin.com/PVV8bsLW
>
> Adding 'if ( layers.isEmpty() ) return;' fix this.
>
> 4. Multiple warnings:
> 6>qgis_core.lib(qgis_core.dll) : warning LNK4006: "public: __thiscall
> QVector<class QVariant>::QVector<class QVariant>(class QVector<class
> QVariant> const &)" (??0?$QVector at VQVariant@@@@QAE at ABV0@@Z) already
> defined in qgsgraph.obj; second definition ignored
> 6>qgis_core.lib(qgis_core.dll) : warning LNK4006: "public: __thiscall
> QVector<class QVariant>::~QVector<class QVariant>(void)"
> (??1?$QVector at VQVariant@@@@QAE at XZ) already defined in qgsgraph.obj;
> second definition ignored
> 6>qgis_core.lib(qgis_core.dll) : warning LNK4006: "public: class
> QVector<class QVariant> & __thiscall QVector<class
> QVariant>::operator=(class QVector<class QVariant> const &)"
> (??4?$QVector at VQVariant@@@@QAEAAV0 at ABV0@@Z) already defined in
> qgsgraph.obj; second definition ignored
> 6>qgis_core.lib(qgis_core.dll) : warning LNK4006: "public: __thiscall
> QVector<class QVariant>::QVector<class QVariant>(void)"
> (??0?$QVector at VQVariant@@@@QAE at XZ) already defined in qgsgraph.obj;
> second definition ignored.
>
> Thats all ^_^
> _______________________________________________
> Qgis-developer mailing list
> Qgis-developer at lists.osgeo.org
> List info: http://lists.osgeo.org/mailman/listinfo/qgis-developer
> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-developer
>