CODEWITHSUNDEEP
c++qtmingwqt-creator
John WH Smith
John WH Smith

Reputation: 2773

Unable to build for Windows on Linux, with MinGW

Because I am not a Java enthusiast, I decided to use C++ and Qt for one of my projects. However, I came across the big cross-compiling Qt problem, and I am unable to produce an .exe file for Windows users.

My setup

Linux Ubuntu 12.04, with Wine and Qt. qmake -v gives the following output :

QMake version 2.01a
Using Qt version 4.8.1 in /usr/lib/x86_64-linux-gnu

I also have a MinGW32 compiler, which can be found at /usr/bin/i586-mingw32msvc-g++. My Wine drive_c folder contains the following Qt directories :

$HOME/.wine/drive_c/Qt/Qt5.2.0/5.2.0/Src
$HOME/.wine/drive_c/Qt/Qt5.2.0/5.2.0/mingw48_32

The mingw48_32 directory contains the necessary include/ and lib/ directories, which are used in my mkspec file, /usr/share/qt4/mkspecs/win32-x-g++/qmake.conf :

QMAKE_INCDIR_QT = /home/me/.wine/drive_c/Qt/Qt5.2.0/5.2.0/mingw48_32/include
QMAKE_LIBDIR_QT = /home/me/.wine/drive_c/Qt/Qt5.2.0/5.2.0/mingw48_32/lib

The problem

According to most guides I've found about Qt cross-compiling, my setup should be enough to run a simple :

qmake -spec win32-x-g++
make
wine /path/to/my/application.exe

But... nothing's linked. QApplication and every other symbol I use in my program are "not found". No QApplication, no QPushButton, no connect(), no SIGNAL(), no SLOT()...

My objective here is to successfully configure QtCreator to use this setup (in an independent build configuration), so that it can build a Linux executable (through the first and working configuration), and a Win32 .exe (through the MinGW setup above). However, I cannot modify a single build step in QtCreator :

Despite guides and solutions I found all over the Internet, my only solution so far is to send my source code to a virtual Windows machine, and have it create a new project with it. On this VM, I could probably compile for Windows... But of course, this doesn't actually sound like a real "solution" to me...

Is there any way Qt(Creator) has finally made cross-compiling easier now ? I'm getting a bit tired of "symbol not found" errors...

Upvotes: 1

Views: 4852

Answers (1)

rubenvb
rubenvb

Reputation: 76785

First,

sudo apt-get install mingw-w64

Then, check if Qt Creator finds the toolchain.

Next, until Ubuntu starts providing a mingw-w64-qt package, download the Qt source and build it. This is bound to get messy, and maybe even the simplest thing to do is to install WINE and use a Windows Qt version.

Upvotes: 1

Related Questions