Does QT 5.9.1 static (/MT) build broken?

goldstar2154

Hi there.
Also i try to build static version of QT 5.9.1 for msvc-2015 x86.

configure -static -debug-and-release -prefix "c:\Qt\5.9.1\static" -platform win32-msvc2015 -qt-zlib -opensource -confirm-license -qt-pcre -qt-libpng -qt-libjpeg -qt-freetype -skip qt3d -skip qttools -opengl dynamic -make libs -nomake tools -skip qtdoc -skip qtwayland -skip qtwebview -skip qtwebengine -skip qtwebchannel -no-qml-debug -skip qtscript -no-icu -no-compile-examples -nomake examples -nomake tests

Also i changed all /MD flags to /MT in file \Qt\5.9.1\Src\qtbase\mkspecs\common\msvc-desktop.conf

Compilation was successful but when compiling my .exe i got a lot of linkage errors like

Qt5Cored.lib(qregularexpression.obj) : error LNK2001: unresolved external symbol _pcre2_config_16
Qt5Guid.lib(qpnghandler.obj) : error LNK2001: unresolved external symbol _png_write_chunk
Qt5Widgetsd.lib(qwindowsxpstyle.obj) : error LNK2001: unresolved external symbol __imp__GetThemeEnumValue@20

I also start full static build without -skip options

Can somebody confirm that static bulds work properly?

goldstar2154

Finally i build fully static app)
But it contains a lot of windows dlls dependencies.

Important things for static apps:

All plugins disabled, so you need load it manually with "Q_IMPORT_PLUGIN"
For example my app need 2 plugins:

Q_IMPORT_PLUGIN(QWindowsIntegrationPlugin);  // This plugin for QWindow classes
Q_IMPORT_PLUGIN(DSServicePlugin);   // This plugin for QMediaPlayer classes

All libs must be added manually
(add into project config or with "pragma comment (lib, "")")
For example:
windows libs for my app (there are DirectX libs, networking libs, GUI libs and lins i dont even know):

#pragma comment(lib, "Ws2_32.lib")
#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "imm32.lib")
#pragma comment(lib, "winmm.lib")
#pragma comment(lib, "UxTheme.lib")
#pragma comment(lib, "Version.lib")
#pragma comment(lib, "Dwmapi.lib")
#pragma comment(lib, "Mfplat.lib")
#pragma comment(lib, "D3d9.lib")
#pragma comment(lib, "Mfuuid.lib")
#pragma comment(lib, "Mf.lib")
#pragma comment(lib, "Dxva2.lib")
#pragma comment(lib, "Evr.lib")

Qt libs for my app:
Be care with Debug versions (ended with "d"), so for my build i made #ifdef block

#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5MultimediaQuick_pd.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5MultimediaWidgetsd.lib")
... Here you need to add all qt libs you use in app, a lot of libs.
You can add all of them, but it dramatically increase linkage time

After adding all of libs and resolve all dependencies i finally build fully static app.

UPDATE
after removing all unused libs i got list of qt libs:

#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5AccessibilitySupport.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5Core.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5EventDispatcherSupport.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5FontDatabaseSupport.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5Multimedia.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5MultimediaWidgets.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5Network.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5OpenGL.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5Test.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5ThemeSupport.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5Widgets.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\Qt5Xml.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\qtfreetype.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\qtharfbuzz.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\qtlibpng.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\qtmain.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\lib\\qtpcre2d.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\plugins\\mediaservice\\dsengine.lib")
#pragma comment(lib, "c:\\Qt\\5.9.1\\static\\plugins\\platforms\\qwindows.lib")

Basically QT VS addin add some libs into msvc project config but not them all

Hope this information will be helpfull

sierdzio

Check if the same happens in Qt 5.9.5 and if yes, report it as a bug to Qt bugtracker https://bugreports.qt.io

goldstar2154

Hi there.
#pragma comment(lib, "Ws2_32.lib")
#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "imm32.lib")
#pragma comment(lib, "imm32.lib")
#pragma comment(lib, "winmm.lib")

#pragma comment(lib, "c:\Qt\5.9\static\plugins\platforms\qwindowsd.lib")
#pragma comment(lib, "c:\Qt\5.9\static\lib\qtlibpngd.lib")
#pragma comment(lib, "c:\Qt\5.9\static\lib\qtharfbuzzd.lib")
#pragma comment(lib, "c:\Qt\5.9\static\lib\qtpcre2d.lib")

#pragma comment(lib, "UxTheme.lib")
#pragma comment(lib, "Mincore.lib")
#pragma comment(lib, "Version.lib")

Adding these libs to my project reduces errors from 183 to 13, have some troubles with additional)
Think i found some more and finally build static app )

goldstar2154