@Crazy-Sage said in How to build Qt with clang under windows?:

Clang 7.0.0

And you're sure this ancient compiler supports all MSVC commands when you use clang-cl. What do you think you will gain when you compile Qt with clang-cl at all?

@VRonin said in I am Newbie trying to build Qt5.15.1 on Windows using MinGW, but got linking error:

That is an old post, the latest version of qcustomplot is compatible with all Qt 5.x versions as well as 6.0 (see https://www.qcustomplot.com/release/2.1.0fixed/changelog.txt)

You were right. I missed the latest qcustomplot update in March.
Thanks! :)

Sorry, I hadn't come back to trying this for a while.

I was able to get past this by dropping -optimize-size, but ran into other strange issues, primarily where a purely debug build had a bunch of errors and a mixed config build would not create the debug lib files (likely due to the same cause, just the errors didn't show or halt the build for some reason) even though the process appeared to complete successfully.

Not having much luck with Qt6 it seems, which is a shame since I'd really like to make use of the upstream changes I submitted for it.

Luckily at this point MSVCs internal CMake version has been updated to one that is compatible with Qt6, so the manual replacement is no longer needed.

I'm currently trying to build 6.1 and was able to get past the configure step, though I had to disable tests (which this time I wanted to confirm it built correctly) due to QTBUG-88829, so I'll see if I have better luck this time. If the mixed build doesn't work I'll try just a debug one again to see if there are the errors I had before, or if not so that I can compile tests and see what might be failing.

So everything looks correct...

How are you loading your image in your application ?

The following command fixed.

sudo xcode-select -s /Applications/Xcode.app/Contents/Developer

You should always use the full path to the qmake binary of the Qt version you want to use to build your project/library/module.

Okay, I think the problem here is that I was doing 'jom release' when I built it and that just doesn't seem to work. If I just do 'jom', it seems to work fine.

Nevermind!

Finally managed it to get a build with webengine. You have just to execute the "qmake -r WEBENGINE_CONFIG+=use_system_ffmpeg" BEFORE ".configure" then it works :-p

I`ve deployed the build over to development machine without problems.

There are now just two compiler errors left which I think can be solved:

libicu18n.so.55 not found (I think i can solve it by installing a icu18n-5 package if there are any?) Undefined references to dbus: "dbus connection unref" and so on, much more errors referencing to dbus (this is actually coming from webengine)

How can I make a build which does not use libicu and dbus or at least uses system ones (if that helps in my case) ?

@JKSH Thank you very much for your answer, I've successfully built Qt using your tutorial!

Yes, better to make clean build

Hi and welcome to devnet,

Don't put Qt in your PATH environment variable, it will not help and might even make things worse when building on Windows. You don't need to set all these variable and specially you should not append PATH to all of them. Also, why are you calling configure in C:\Windows\System32 ?

spoiled by windows... I expected the Ubuntu trash to empty itself. 13GB of trash later I can build, no problem.

openssl 1.0.2.c --> BlueTiger's ESMTP library --> sending email from my arm device.

now to figure out an inconsistent issue with openssl for win64 missing openssl32.lib in the install (but the dll is there and it worked last night!?)

.

@FlorianB I'm trying to install qtcreator on a system that I don't have admin rights on. so:

Install qt from source as I need the latest

Install qtcreator

Works fine, but as mentioned in your posts I manually did make install in qt5/qttools/src/designer/src/ lib, components, designer folder. Is there something else that I'm missing. I install qt to a prefix and set it as path.

Installing qtcreator, qmake step works fine. I get the error (This is with current master Oct 7 2015):

In file included from ../../../../qt-creator/src/libs/utils/shellcommand.cpp:31:0:
../../../../qt-creator/src/libs/utils/shellcommand.h:118:19: error: expected ‘;’ at end of member declaration
../../../../qt-creator/src/libs/utils/shellcommand.h:118:21: error: ‘override’ does not name a type
../../../../qt-creator/src/libs/utils/shellcommand.cpp:90:84: sorry, unimplemented: non-static data member initializers
../../../../qt-creator/src/libs/utils/shellcommand.cpp:90:84: error: in-class initialization of static data member ‘m_proxyFactory’ of non-literal type
../../../../qt-creator/src/libs/utils/shellcommand.cpp: In member function ‘virtual Utils::SynchronousProcessResponse Utils::ShellCommand::runCommand(const Utils::FileName&, const QStringList&, int, const QString&, Utils::ExitCodeInterpreter*)’:
../../../../qt-creator/src/libs/utils/shellcommand.cpp:338:42: error: ‘class Utils::Internal::ShellCommandPrivate’ has no member named ‘m_proxyFactory’
../../../../qt-creator/src/libs/utils/shellcommand.cpp: In member function ‘Utils::SynchronousProcessResponse Utils::ShellCommand::runSynchronous(const Utils::FileName&, const QStringList&, int, const QString&, Utils::ExitCodeInterpreter*)’:
../../../../qt-creator/src/libs/utils/shellcommand.cpp:419:42: error: ‘class Utils::Internal::ShellCommandPrivate’ has no member named ‘m_proxyFactory’
../../../../qt-creator/src/libs/utils/shellcommand.cpp: In member function ‘virtual bool Utils::ShellCommand::runFullySynchronous(const Utils::FileName&, const QStringList&, int, QByteArray*, QByteArray*, const QString&)’:
../../../../qt-creator/src/libs/utils/shellcommand.cpp:482:42: error: ‘class Utils::Internal::ShellCommandPrivate’ has no member named ‘m_proxyFactory’
../../../../qt-creator/src/libs/utils/shellcommand.cpp: In member function ‘void Utils::ShellCommand::setOutputProxyFactory(const std::functionUtils::OutputProxy*()&)’:
../../../../qt-creator/src/libs/utils/shellcommand.cpp:547:8: error: ‘class Utils::Internal::ShellCommandPrivate’ has no member named ‘m_proxyFactory’
make[3]: *** [.obj/debug-shared/shellcommand.o] Error 1
make[3]: Leaving directory /nfs2/jain/qt-creator-build/src/libs/utils' make[2]: *** [sub-utils-make_first] Error 2 make[2]: Leaving directory /nfs2/jain/qt-creator-build/src/libs'
make[1]: *** [sub-libs-make_first-ordered] Error 2
make[1]: Leaving directory `/nfs2/jain/qt-creator-build/src'
make: *** [sub-src-make_first-ordered] Error 2

@SGaist thanks , I have actually compiled without the script no errors thought while compiling, but I'm not sure if the errors will popup when i start using the build, but it would be really useful for future builds also I'm compiling OpenCV , so here is my installation paths :

DirectX SDK : C:\Program Files\Microsoft DirectX SDK (June 2010)
Microsoft SDK : C:\Program Files\Microsoft SDKs
MSVC : C:\Program Files\Microsoft Visual Studio 12.0
.NET : C:\Program Files\Microsoft.NET
OpenSSL : C:\OpenSSL-Win32
Qt source : C:\Qt\5.4.1

thanks again for your time