Compiling a Qt program in Windows XP with MinGW's g++
Solution 1
++milot
I only use MinGW to compile Qt on Windows and that's the easiest way to make sure you have everything you need.
Here is the link for the Open Source Qt version: http://trolltech.com/downloads/opensource/appdev/windows-cpp
Use the "Or download Qt with the MinGW compiler included: Size: 149,3 Mb" link.
The other way to use MinGW is to compile Qt with MinGW and then compile your application, but it depends on if you're compiling in MSYS or just using MinGW.
Solution 2
Well I had similar problem before when I was installing MingW downloaded from the web, but in the other hand while installing Qt it will ask you to download the version of MingW which is compatible with Qt. So have you tried installing it when the Qt installer asked you?
Solution 3
Qt 4.5 has Qt Creator 1.1 which is easy to develop applications.
Designing and coding is combined in Qt Creator and mucy easier to use.
you can experience it like using VB IDE(or rather like eclipse,netbeans,etc.)
when run the app. the project is compiled in either in debug or release mode.
user8923
Updated on June 04, 2022Comments
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user8923 about 2 years
I have a stub Qt application and I keep getting compiler errors
#include <QApplication> int main(int argc, char *argv[]) { return 0; }
I used
qmake -project
andqmake
commands and as far as I can tell they did their job correctly. When I subsequently callmake
at the command line I get the following error:g++ -c -O2 -frtti -fexceptions -mthreads -Wall -DUNICODE -DQT_LARGEFILE_SUPPORT -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_THREAD_SUPPORT -DQT_NEEDS_QMAIN -I '../../../../qt/include/QtCore' -I'../../../../qt/include/QtCore' -I'../../../.. /qt/include/QtGui' -I'../../../../qt/include/QtGui' -I'../../../../qt/include' - I'.' -I'c:/qt/include/ActiveQt' -I'release' -I'.' -I'../../../../qt/mkspecs/defa ult' -o release/Main.o Main.cpp cc1plus.exe: Invalid option 'threads' make[1]: *** [release/Main.o] Error 1 make: *** [release] Error 2
My searches on Google tell me that threading is important to keep but not how to fix this error. Any help will be appreciated.
EDIT (copied from an answer the OP left):
I now get:
g++ -enable-stdcall-fixup -Wl,-enable-auto-import -Wl,-enable-runtime-pseudo-rel oc -Wl,-s -pthread -Wl -Wl,-subsystem,windows -o release/raytrace.exe object_scr ipt.raytrace.Release -L'c:/qt/lib' -lmingw32 -lqtmain -lQtGui -lgdi32 -lcomdlg3 2 -loleaut32 -limm32 -lwinmm -lwinspool -lmsimg32 -lQtCore -lkernel32 -luser32 - lshell32 -luuid -lole32 -ladvapi32 -lws2_32 g++: unrecognized option `-pthread' /cygnus/cygwin-b20/H-i586-cygwin32/i586-cygwin32/bin/ld: cannot open -lmsimg32: No such file or directory collect2: ld returned 1 exit status make[1]: *** [release/raytrace.exe] Error 1 make: *** [release] Error 2
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Tuminoid over 15 yearsYeah, use the MinGW 3.4.2. I run into troubles as well trying 5.x versions.