MinGW64, Qt 4.8.3

? Offline

I am unsucessfully compiling Qt with MinGW64. There are wiki pages (http://qt-project.org/wiki/MinGW-64-bit, http://qt-project.org/wiki/Building_Qt_Desktop_for_Windows_with_MinGW) and a few posts in forums suggesting that it is works.

I am compiling on plain MSYS with gcc/rubenvb-4.7.2 build. I unpack and configure (in bash console) using

@tar xfz qt-everywhere-opensource-src-4.8.3.tar.gz
cd qt-everywhere-opensource-src-4.8.3
./configure.exe -prefix c:\MinGW64 -release -opensource -confirm-license -shared -fast
-no-webkit -no-multimedia -no-xmlpatterns -no-qt3support
-no-accessibility -no-script -no-declarative
-no-dsp -no-vcproj -no-s60 -largefile
-qt-zlib -qt-libtiff -qt-libpng -qt-libmng -qt-libjpeg
-platform win32-g++-4.6 -nomake tests -nomake examples
@

which successfully configures the project with

@Sources are in..............C:\src\qt-everywhere-opensource-src-4.8.3
Build is done in............C:\src\qt-everywhere-opensource-src-4.8.3
Install prefix..............c:\MinGW64
Headers installed to........c:/MinGW64/include
Libraries installed to......c:/MinGW64/lib
Plugins installed to........c:/MinGW64/plugins
Imports installed to........c:/MinGW64/imports
Binaries installed to.......c:/MinGW64/bin
Docs installed to...........c:/MinGW64/doc
Data installed to...........c:/MinGW64
Translations installed to...c:/MinGW64/translations
Examples installed to.......c:/MinGW64/examples
Demos installed to..........c:/MinGW64/demos
@

and bootstraps qmake. Running @mingw32-make@ however immediately results in

@C:/src/qt-everywhere-opensource-src-4.8.3/bin/qmake C:/src/qt-everywhere-opensource-src-4.8.3//projects.pro -o Makefile -spec win32-g++-4.6
Could not find mkspecs for your QMAKESPEC(win32-g++-4.6) after trying:
c:/MinGW64\mkspecs
Error processing project file: C:/src/qt-everywhere-opensource-src-4.8.3//projects.pro
make: *** [all] Error 3
@

Any hints? Thanks!

? Offline

As workaround, I did @cp -r mkspecs /c/MinGW64/mkspecs@ , it compiles now. Explanation of the error still appreciated.

ihall_mps

I'm not sure why you're wanting the set the -prefix parameter to the same folder as your compiler.

Try not setting this parameter, and see what happens. By default, QT will build to C:\Qt\4.8.3.

? Offline

I want to have separate dirs for every compiler I use. Under Linux, Qt has the same prefix as all system-installed programs (/usr - Unix System Resources) anyways, and it works.

sierdzio

[quote author="eudoxos" date="1352474657"]Explanation of the error still appreciated.[/quote]

What is not clear? Qt built with -prefix puts the output files of it's compilation to the prefixed folder. It does not copy the mkspecs. That is partially why the most common way is to use:
@
-prefix $PWD
@

or:
@
-prefix CD
@

if you happen to live on Windows (CD should be wrapped in percent signs, but this site strips them, so I cannot put them there).

? Offline

Configure.exe creates configuration which does not compile. That is not OK.

If it works only for -prefix $PWD, then it should be documented and checked by configure.exe.

sierdzio

You can set QTDIR and it should compile.

Apart from that I agree, it probably should copy the mkspecs.