[QGIS-Developer] QGIS build problem on Windows 10 64-bit from Master

[David Adler]

After getting a clean OSGEO4W64 and new clone of QGIS source and running 
configonly.bat, I get the following error when building on Visual Studio 
2015.

Creating library 
E:/qgisdev/ms-windows/osgeo4w/build-qgis-test-x86_64/src/app/RelWithDebInfo/qgis_app.lib 
and object 
E:/qgisdev/ms-windows/osgeo4w/build-qgis-test-x86_64/src/app/RelWithDebInfo/qgis_app.exp
48>qgsgeometryvalidationservice.obj : error LNK2019: unresolved external 
symbol "public: __cdecl 
QgsGeometryCheck::LayerFeatureIds::LayerFeatureIds(class QMap<class 
QString,class QSet<__int64> > const &)" 
(??0LayerFeatureIds at QgsGeometryCheck@@QEAA at AEBV?$QMap at VQString@@V?$QSet at _J@@@@@Z) 
referenced in function "public: void __cdecl 
QgsGeometryValidationService::triggerTopologyChecks(class QgsVectorLayer 
*)" 
(?triggerTopologyChecks at QgsGeometryValidationService@@QEAAXPEAVQgsVectorLayer@@@Z)
48>E:\qgisdev\ms-windows\osgeo4w\build-qgis-test-x86_64\output\bin\RelWithDebInfo\qgis_app.dll 
: fatal error LNK1120: 1 unresolved externals

I'm trying to build from the source in order to diagnose / fix a crash 
in the DB2 provider in QGIS 3.3.

Regards,
David