[QGIS-Developer] How to build qgis on Windows 10

Sun Dec 25 10:49:09 PST 2022

You are seeing this error because vcpkg already builds qwt against Qt6 where QList und QVector were unified (https://www.qt.io/blog/qlist-changes-in-qt-6).

The easiest solution is resetting the vcpkg repository to an older state: git reset --hard 3776224fd28bd7e0c78617d73696753219e8d272~1

I recommend to clean the vcpkg directory then via: git clean -xfd

I'd also delete the %LOCALAPPDATA%\vcpkg folder.

Rebuild the dependencies then. Clean your QGIS build folder and rebuild.

Cheers,
Stefan

From: QGIS-Developer <qgis-developer-bounces at lists.osgeo.org> On Behalf Of Deimer Caldera via QGIS-Developer
Sent: Wednesday, December 21, 2022 8:40 PM
To: "Johannes Kröger (WhereGroup)" <johannes.kroeger at wheregroup.com>
Cc: qgis-developer <qgis-developer at lists.osgeo.org>
Subject: Re: [QGIS-Developer] How to build qgis on Windows 10

Hi, thank you for your quick answer.

I have checked and the package Qwt is installed, so do you have any other idea?

---- On Wed, 21 Dec 2022 10:23:04 -0500 Johannes Kröger (WhereGroup) via QGIS-Developer <qgis-developer at lists.osgeo.org<mailto:qgis-developer at lists.osgeo.org>> wrote ---

QwtPlotCurve sounds like you are missing QWT? This is documented in the up-to-date documentation at https://github.com/qgis/QGIS/blob/master/INSTALL.md#2-overview<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fqgis%2FQGIS%2Fblob%2Fmaster%2FINSTALL.md%232-overview&data=05%7C01%7Cstefan.uhrig%40sap.com%7Cdeb1e6e5938b480855b708dae38b282d%7C42f7676cf455423c82f6dc2d99791af7%7C0%7C0%7C638072484082672343%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=2U2pF8%2FZ26TO2DO5QUSIODnMnPLL8ev9iA%2BbvicxtGc%3D&reserved=0> and has been written in that document for at least two years.
Am 21.12.22 um 16:04 schrieb Deimer Caldera via QGIS-Developer:

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I have tried to build qgis from source with this document https://github.com/qgis/QGIS/blob/ltr-3_22/INSTALL.md<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fqgis%2FQGIS%2Fblob%2Fltr-3_22%2FINSTALL.md&data=05%7C01%7Cstefan.uhrig%40sap.com%7Cdeb1e6e5938b480855b708dae38b282d%7C42f7676cf455423c82f6dc2d99791af7%7C0%7C0%7C638072484082828549%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=T72qLrWDqs8tfAcXM9NEfOLJu5l6aTX4mwc3SGU85iU%3D&reserved=0> but I got many errors. Recently I found this guide
https://www.mail-archive.com/qgis-developer@lists.osgeo.org/msg52306.html<https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.mail-archive.com%2Fqgis-developer%40lists.osgeo.org%2Fmsg52306.html&data=05%7C01%7Cstefan.uhrig%40sap.com%7Cdeb1e6e5938b480855b708dae38b282d%7C42f7676cf455423c82f6dc2d99791af7%7C0%7C0%7C638072484082828549%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=ePzwulq%2F4gdClMvek9S%2BwVJdrSfpNFyVCp%2Bq9tH3k6A%3D&reserved=0> but the build gives me some errors (error LNK2019: unresolved external symbol).

..\qgis-3.22.13\out\build\x64-Release\qgsrasterhistogramwidget.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __cdecl QwtPlotCurve::setSamples(class QVector<class QPointF> const &)" (__imp_?setSamples at QwtPlotCurve@@QEAAXAEBV?$QVector at VQPointF@@@@@Z) referenced in function "public: void __cdecl QgsRasterHistogramWidget::refreshHistogram(void)" (?refreshHistogram at QgsRasterHistogramWidget@@QEAAXXZ)

..\qgis-3.22.13\out\build\x64-Release\qgscurveeditorwidget.cpp.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __cdecl QwtPlotCurve::setSamples(class QVector<class QPointF> const &)" (__imp_?setSamples at QwtPlotCurve@@QEAAXAEBV?$QVector at VQPointF@@@@@Z)

..\qgis-3.22.13\out\build\x64-Release\qgsgradientcolorrampdialog.cpp.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __cdecl QwtPlotCurve::setSamples(class QVector<class QPointF> const &)" (__imp_?setSamples at QwtPlotCurve@@QEAAXAEBV?$QVector at VQPointF@@@@@Z)

..\qgis-3.22.13\out\build\x64-Release\qgsrasterhistogramwidget.cpp.obj : error LNK2019: unresolved external symbol "__declspec(dllimport) public: void __cdecl QwtPlotHistogram::setSamples(class QVector<class QwtIntervalSample> const &)" (__imp_?setSamples at QwtPlotHistogram@@QEAAXAEBV?$QVector at VQwtIntervalSample@@@@@Z) referenced in function "public: void __cdecl QgsRasterHistogramWidget::refreshHistogram(void)" (?refreshHistogram at QgsRasterHistogramWidget@@QEAAXXZ)

..\qgis-3.22.13\out\build\x64-Release\qgscurveeditorwidget.cpp.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __cdecl QwtPlotHistogram::setSamples(class QVector<class QwtIntervalSample> const &)" (__imp_?setSamples at QwtPlotHistogram@@QEAAXAEBV?$QVector at VQwtIntervalSample@@@@@Z)

..\qgis-3.22.13\out\build\x64-Release\qgshistogramwidget.cpp.obj : error LNK2001: unresolved external symbol "__declspec(dllimport) public: void __cdecl QwtPlotHistogram::setSamples(class QVector<class QwtIntervalSample> const &)" (__imp_?setSamples at QwtPlotHistogram@@QEAAXAEBV?$QVector at VQwtIntervalSample@@@@@Z)

..\qgis-3.22.13\out\build\x64-Release\output\bin\qgis_gui.dll : fatal error LNK1120: 2 unresolved externals

Am I missing a package to install?

Is there any updated documentation to make the build successful?

Thank you so much for your attention.

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