Compile Qt 5.1.1 with Cygwin (64bit) shipped MinGW64 compiler on Windows 7
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Yes, it takes several hours on old PCs (it took over 3 hours to compile Qt 4.8 on my old Windows XP laptop; can't remember its specs)
If you have a dual-core processor, passing "-j 2" or "-j 3" into mingw32-make will let it to compile with 2 or 3 threads in parallel, speeding things up a little.
You can also only compile a subset of modules. Example:
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mingw32-make -j 3 module-qtbase
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...this will only compile the modules in the qtbase subfolder (http://qt-project.org/wiki/Qt_5_Structure shows you which modules are in which subfolder) -
Enjoy! :D
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ok. after several attempts to compile the windows software I am still having issues where it craps out and stop executing the make process. Here are the last mingw32-make commands before it exitted:
mingw32-make[6]: Leaving directory 'C:/qt_src/qtbase/examples/widgets/widgets/validators'
mingw32-make[5]: Leaving directory 'C:/qt_src/qtbase/examples/widgets/widgets/validators'
mingw32-make[6]: Leaving directory 'C:/qt_src/qtbase/examples/widgets/widgets/wiggly'
mingw32-make[5]: Leaving directory 'C:/qt_src/qtbase/examples/widgets/widgets/wiggly'
mingw32-make[6]: Leaving directory 'C:/qt_src/qtbase/examples/widgets/widgets/windowflags'
mingw32-make[5]: Leaving directory 'C:/qt_src/qtbase/examples/widgets/widgets/windowflags'
mingw32-make[6]: Leaving directory 'C:/qt_src/qtbase/examples/widgets/widgets/styles'
mingw32-make[5]: Leaving directory 'C:/qt_src/qtbase/examples/widgets/widgets/styles'
mingw32-make[4]: Leaving directory 'C:/qt_src/qtbase/examples/widgets/widgets'
mingw32-make[3]: Leaving directory 'C:/qt_src/qtbase/examples/widgets'
mingw32-make[2]: Leaving directory 'C:/qt_src/qtbase/examples'
mingw32-make[1]: Leaving directory 'C:/qt_src/qtbase'
makefile:56: recipe for target 'module-qtbase-make_first' failed
mingw32-make: *** [module-qtbase-make_first] Error 2my config is this:
configure -prefix C:\Qt5d -developer-build -opensource -confirm-license -static -platform win32-g++ -qt-zlib -qt-libpng -qt-libjpeg -opengl desktop 1>R.log 2>& -
Ok. I have given up trying to build Qt on Windows XP 64 from source. No configuration selection will make this ever complete to the end of the make process.
What I wanted to do in order to support my bindings effort is a way to get to the source code while executing. Since GDB was barking about finding files I thought I needed to rebuild QT from src. No. I just needed to learn how to in GDB to go find the source files. Well that worked as I can step into the Qt's src but I still cannot figure out why I am not getting my sample program to display labels when I do all the constructing of that label from my Ada code. The CPP code can do it just fine so I am confused as to why. I can build a central widget, I can display a push button from Ada but not text labels. Crazy. I thought maybe it was a QFlags issue but am not sure why. Maybe there is a way to say to Qt , "hey, draw that widget now" function. This is frustrating to the nth degree, especially when only some things work.
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I've never heard of 8+ hour builds before... it might have gotten stuck in a loop, or having too many threads might have caused its efficiency to plummet. I usually spawn N+1 threads, where N = # of cores.
I'm sorry I'm unable to provide more help. May I suggest subscribing to and asking at the "Interest mailing list":http://lists.qt-project.org/mailman/listinfo/interest, where folks are more familiar with the low-level internals of Qt and might have experience with cross-language bindings. Or ask in an Ada forum.
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Well I got lucky tonight and figured out what was going on. My sample Ada program can generate the same objects as a CPP program can. No issues with virtual object either.
Next biggie is to determine how to get signals/slots to work.
Thanks for all of your help.
chris
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Glad to hear that things are looking better.
All the best with your binding efforts!
