I'm using:
Qt 4.8.4
Qt Creator 2.7.0
Qt Creator source 2.7.0
Doxygen source Revision 57
Building Doxygen (Doxygen plugin for Qt) source [svn.kofee.org] with Qt 4.8.4 for Desktop – MSVC2010 and QtCreator 2.7.0 output the following:
-1: error: LNK1181: cannot open input file 'Aggregation.lib'
The plugin needs to be built against a fully compiled in situ qtcreator on Windows, unnecessary files are stripped from the distribution package but the compiler needs them to link the object codes together. You should ask on the website for a slightly quicker answer :)
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I have used OpenCV 3.2.0 since a long time ago.
Recently, I need to implement face detection with landmark detection so I decided to build the OpenCV again with extra OpenCV modules.
However, it seems that OpenCV 3.2.0 is not compatible with the latest extra OpenCV modules so I have to build it with the latest OpenCV (which is 4.0.0)
The problem is, I'm in a Catch 22 situation.
1. If I use mingw 32bit 5.1.0 to build OpenCV (which is a compiler bundled with Qt), I have a following error
CMakeFiles\opencv_core.dir/objects.a: member
CMakeFiles\opencv_core.dir/objects.a(vs_version.rc.obj) in archive is
not an object
2. If I use mingw 64bit 8.1.0 to build OpenCV, it works fine. However there are two situations that give me an error.
2.1. If I use mingw 32bit 5.1.0 to build a Qt Project with those OpenCV libs, it gives a following error.
D:\opencv-build\bin\libopencv_core400.dll:-1: error: file not
recognized: File format not recognized
I suspect that this has something to do with 32-64bit problem. The compiler may expect 32bit libs, but the libs are 64bit format because the compiler used to build OpenCV was 64bit mingw.
file format pei-i386
file format pei-x86-64
The first one is the file format of the OpenCV 3.2.0 libs which I used in the past and worked fine with Qt.
The second one is the file format of the OpenCV 4.0.0 libs newly built.
2.2 If I use mingw 64bit 8.1.0 to build a Qt Project with those OpenCV libs, it gives a following error.
collect2.exe: error: ld returned 5 exit status
I suspect that this occurred because basically Qt is for 32-bit, not 64-bit.
What I want to do is that building OpenCV 4.0.0 so that somehow the file format of those OpenCV libs is pei-i386, not pei-x86-64.
How can I achieve this?
I just installed Qt 5.2 package on ubuntu. I simply created a Qt widget application, and when I tried to build it, I got the following message:
Qt Creator needs a compiler set up to build. Configure a compiler in
kit options
I have tried several things, all of which were unsuccessful. I tried setting the compiler kit to
Desktop Qt 5.2.0 GCC 32bit (default)
However it didn't work
After that I set the compiler to
GCC (x86 32bit in use/bin)
However that didn't work either.
I also tried adding gcc manually and gave it the path
/usr/bin/g++-4.6
but it still didn't work.
This is what appears in there Qt Version tab
This is what I get when I remove the .pro.user file and restart the IDE, Whats the difference between configuring a project as Desktop and Desktop Qt 5.2.0 GCC 32bit?
Qt Creator needs a version of tools that are able to link against the Qt binaries that the downloaded package contains. In your case, the local toolchain and the binaries don't match. That means that you would actually have to build the Qt with your toolkit and make sure that QtCreator can find the built binaries.
The simpler way for Ubuntu is to use the packaged version of the tools; they play well with the already delivered binaries. Use sudo apt-get install qtcreator to install it with all the dependencies.
Windows 7: I have installed Qt 4.8.4 Win and Qt Creator 2.6.2 Win, VS2010 (from here). When I try to open a project (previously compiled with Qt 4.8.3 / Creator 2.5.2), it says I need a kit (no valid kit) and eventually I end up at Qt version is not properly installed. All is shown in the screenshots below.
I have checked some solutions:
SO QT version is not properly installed, please run make install is for Linux
Some say, I need to install Qt SDK, but where do I find this (this one contains older Creator / Qt versions), and what sense would the individual installers make if I need SDK?
Some say, I need to add Qt to path, but what exactly? Creator? The Qt 4.8.4, the qmake dir?
Somehow I fail with this make install, nothing happens.
I have installed the 5.0.1 including Creator 2.6.2 as one installation, this works. But when I then download 4.8.4. and try to add it as QT Version, same issue: Qt version is not properly installed
Any idea what I would need to do or install.
-- Edit -- List of trials ---
Added my Qt 4.8.4 and its qmake dir to PATH
Re-installed Qt in different order: Qt 4.8.4 first / Creator 2.6.2 thereafter
Opened Qt CMD Prompt qmake install (as in the suggestions): 4.8.4\install:1: Parse Error ('INSTALLING Qt Source Package Version 4.8.4.') Error processing project file: install
qmake install from Qt CMD. Runs 20 minutes, Laptop gets extremly hot, then it crashes
P:\Qt\Libs\4.8.4>qmake\qmake.exe install
QMAKESPEC has not been set, so configuration cannot be deduced.
Error processing project file: install
I had the same problem. Try to choose "qmake.exe" from the BIN folder, not the qmake folder, so in your case probably P:\Qt\Libs\4.8.4\bin\qmake.exe
Based on SO: How to install Qt on Windows after building? I eventually got to http://qt-project.org/doc/qt-4.8/install-win.html
Simply running configure solved it for me, I did not build, nothing else. The installer did apply several patches, so I still do not get why I have to run configure.
I just installed Qt 5.0.1 MSVC2010 32bit, i need to configure the Kits and the compiler. I have installed minGW and its detected by Qt Automatically. But at Qt Version tab in Tools->Option->Build & Run menu, i get this:
No compiler can produce code for this Qt version
What should I do? which compiler I have to use? I can't build/run anything.
You should either use MSVS 2010 for your downloaded Qt or download the MinGW Qt distribution.
I got the following error when I try building Qt Creator from source.
user#host:/usr/share/qtcreator/qtcreator_build$ qmake -version
QMake version 2.01a
Using Qt version 4.8.2 in /usr/local/Trolltech/Qt-4.8.2/lib
user#host:/usr/share/qtcreator/qtcreator_build$ sudo qmake ../qtcreator_fromSrc/qtcreator.pro
Project MESSAGE: Cannot build Qt Creator with Qt version 4.6.2.
Project ERROR: Use at least Qt 4.7.4.
As shown, the Qt library in use above is 4.8.2, which should be qualifying ver 4.7.2. It's installed from source. How can I let the qtcreator installer recognize the right qt version?
My workaround was to copy the source of Qt Creator to the area that doesn't require super user permission. HTH.