[SOLVED] Qt Creator and CMake on Windows

aaichert

I am trying to move away from Microsoft Visual Studio on Widnows.

I have installed the binaries Qt 5.3.2 for Windows 32-bit (MinGW 4.8.2, OpenGL) directly from http://qt-project.org/downloads and I have a simple CMakeLists.txt

@[...]
find_package(Qt5Widgets)
set(CMAKE_AUTOMOC ON)
add_executable(Test test.cpp )
qt5_use_modules(Test Widgets)
[...]
@
It works when I use CMake through the Visual Studio Generator and it also works on Linux.

QtCreator:

I open the CMake Project using QtCreator
I use CMakeGui to set the variable Qt5Widgets_DIR = "C:\Qt\Qt5.3.2\5.3\mingw482_32\lib\cmake/Qt5Widgets"
I set Core and GUI accordingly
Then QtCreator successfully configures and generates its makefiles.

My source code compiles but I get linkage errors
@undefined reference to `_imp___ZN12QApplicationC1ERiPPci'
@

and a couple similar ones.

It would be very helpful if somebody could point out what I am doing wrong in this simplistic set up.

Trouble is, I can't even see the compiler call in the "4 Compile Output" tab, which is annoying to begin with. NOW: How can I check EXACTLY which libraries are being linked. The makefiles are really hard to read...

SGaist

Hi and welcome to devnet,

Did you check the "Qt Creator's manual":http://qt-project.org/doc/qt-5/cmake-manual.html for qmake

Hope it helps

aaichert

Really, nobody any suggestions?

I guess I'm just not gonna use QtCreator, if a simple linker problem is unsolvable.

aaichert

SOOOO I got it.

I had
CMAKE_PREFIX_PATH
set to
C:\Qt\Qt5.3.1\5.3\msvc2013_64_opengl

I simply deleted that environment variable and now it works.

I don't think this is intended behavior. It should be possible to set all variables in CMake and override whatever is in CMAKE_PREFIX_PATH.

My problem that I don't see what exactly the makefile is doing. SO far I do not like QtCreator.