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Qt5 development primer

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  • P Offline
    P Offline
    pierrevr
    wrote on last edited by
    #68

    hmuelner: That is a different problem, I believe. As stated in "Building_Qt_5_from_Git":http://developer.qt.nokia.com/wiki/Building_Qt_5_from_Git :

    WebKit doesn’t compile, missing ICU

    Currently there is no configure time check for ICU, so install it through the package manager through
    on Ubuntu/Debian:

    sudo apt-get install libicu-dev

    on Fedora:

    yum search ICU

    Alternatively you can also compile Qt without webkit by deleting / renaming the qtwebkit, qtwebkit-examples-and-demos directories. The -no-webkit option of configure does not work yet : https://bugreports.qt-project.org/browse/QTBUG-20577

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  • H Offline
    H Offline
    hmuelner
    wrote on last edited by
    #69

    @pierrevr: I am talking about building Webkit on Windows - no package manager there.

    Helmut Mülner

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  • K Offline
    K Offline
    Kondr
    wrote on last edited by
    #70

    Hello, I have tried to compile Qt5 under archlinux and under mac os, but in both cases I have got the same errors:

    bq.
    cd qtsvg/ && make -f Makefile
    cd qtphonon/ && make -f Makefile
    cd qtxmlpatterns/ && make -f Makefile
    make[1]: Entering directory /home/kondr/Documents/qt5/qtxmlpatterns' /home/kondr/Documents/qt5/qtbase/bin/qmake QMAKE_ABSOLUTE_SOURCE_PATH=/home/kondr/Documents/qt5/qtbase -o Makefile qtxmlpatterns.pro Could not find mkspecs for your QMAKESPEC(default) after trying: /home/kondr/Documents/qt5/qtxmlpatterns/mkspecs /home/kondr/Documents/qt5/qt5/mkspecs make[1]: *** [Makefile] Error 3 make[1]: Leaving directory /home/kondr/Documents/qt5/qtxmlpatterns'
    make: *** [module-qtxmlpatterns-make_default] Error 2
    make: *** Waiting for unfinished jobs....
    make[1]: Entering directory /home/kondr/Documents/qt5/qtsvg' /home/kondr/Documents/qt5/qtbase/bin/qmake QMAKE_ABSOLUTE_SOURCE_PATH=/home/kondr/Documents/qt5/qtbase -o Makefile qtsvg.pro Could not find mkspecs for your QMAKESPEC(default) after trying: /home/kondr/Documents/qt5/qtsvg/mkspecs /home/kondr/Documents/qt5/qt5/mkspecs make[1]: *** [Makefile] Error 3 make[1]: Leaving directory /home/kondr/Documents/qt5/qtsvg'
    make: *** [module-qtsvg-make_default] Error 2
    make[1]: Entering directory /home/kondr/Documents/qt5/qtphonon' /home/kondr/Documents/qt5/qtbase/bin/qmake QMAKE_ABSOLUTE_SOURCE_PATH=/home/kondr/Documents/qt5/qtbase -o Makefile qtphonon.pro Could not find mkspecs for your QMAKESPEC(default) after trying: /home/kondr/Documents/qt5/qtphonon/mkspecs /home/kondr/Documents/qt5/qt5/mkspecs make[1]: *** [Makefile] Error 3 make[1]: Leaving directory /home/kondr/Documents/qt5/qtphonon'
    make: *** [module-qtphonon-make_default] Error 2

    I have used the next command:

    bq. git clone git://gitorious.org/qt/qt5.git qt5 && cd qt5 && perl init-repository && export PATH="$PWD/qtbase/bin:$PATH" && ./configure -prefix $PWD/qt5 -opensource -confirm-license -nomake tests -nomake examples && make -j3

    In addition I would like to know how to compile Qt 5 for a special arch? (for example, how to compile Qt 5 for i386 arch on x86_64 OS?)

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  • H Offline
    H Offline
    hmuelner
    wrote on last edited by
    #71

    I made some progress (but did not succeed) with compiling the current git version of qtwebkit with vs2010 in windows7(64):

    My Qt directory is in d:\Qt\qt5.

    • I created an additional system cpp directory in d:\cpp with an include and a lib subdirectory

    • I add two variables to my system environment: INCLUDE=d:\cpp\include and LIB=d:\cpp\lib and started a new Visual Studio Command Prompt.

    • I copied qedit.h from the Windows SDK 6.0A to d:\cpp\include

    • I got the ICU libraries form http://download.icu-project.org/files/icu4c/4.8.1.1/icu4c-4_8_1_1-Win32-msvc10.zip

    • I copied the icu headers ti d:\cpp\include

    • I copied the icu lib files (*.lib and *.dll) to d:\Qt\qt5\qtbase\lib

    • I renamed icuin.lib to icui18n.lib, icuind.lib to icui18nd.lib and icudt.lib to icudata.lib

    • I got ftp://sources.redhat.com/pub/pthreads-win32/pthreads-w32-2-8-0-release.exe for the pthread library

    • I copied the pthreads headers and libraries to d:\cpp\include and d:\cpp\lib

    • I changed one subroutine in d:/Qt/qt5/qtwebkit/Tools/Scripts/webkitdirs.pm to the following code (because the mkspec can be a ;-separated path list):
      @sub retrieveQMakespecVar
      {
      my $mkspec = $[0];
      my $varname = $      [1];

      my $varvalue = undef;
      #print "retrieveMakespecVar " . $mkspec . ", " . $varname . "\n";
      my @mkspecs = split(/;/,$mkspec);
      foreach $mkspec (@mkspecs) {
      local SPEC;
      open (SPEC, "<$mkspec") or next;
      while (<SPEC>) {
      if ($_ =~ /\s      include((.+))/) {
      # open the included mkspec
      my $oldcwd = getcwd();
      (my $volume, my $directories, my $file) = File::Spec->splitpath($mkspec);
      my $newcwd = "$volume$directories";
      chdir $newcwd if $newcwd;
      $varvalue = retrieveQMakespecVar($1, $varname);
      chdir $oldcwd;
      } elsif ($_ =~ /$varname\s*=\s*([^\s]+)/) {
      $varvalue = $1;
      last;
      }
      }
      close SPEC;
      last if defined($varvalue);
      }
      return $varvalue;
      }@

    • sub retrieveQMakespecVar
      {
      my $mkspec = $[0];
      my $varname = $      [1];

      my $varvalue = undef;
      #print "retrieveMakespecVar " . $mkspec . ", " . $varname . "\n";
      my @mkspecs = split(/;/,$mkspec);
      foreach $mkspec (@mkspecs) {
      local SPEC;
      open (SPEC, "<$mkspec") or next;
      while (<SPEC>) {
      if ($_ =~ /\s      include((.+))/) {
      # open the included mkspec
      my $oldcwd = getcwd();
      (my $volume, my $directories, my $file) = File::Spec->splitpath($mkspec);
      my $newcwd = "$volume$directories";
      chdir $newcwd if $newcwd;
      $varvalue = retrieveQMakespecVar($1, $varname);
      chdir $oldcwd;
      } elsif ($_ =~ /$varname\s*=\s*([^\s]+)/) {
      $varvalue = $1;
      last;
      }
      }
      close SPEC;
      last if defined($varvalue);
      }
      return $varvalue;
      }
      @

    • sub retrieveQMakespecVar
      {
      my $mkspec = $[0];
      my $varname = $      [1];

      my $varvalue = undef;
      #print "retrieveMakespecVar " . $mkspec . ", " . $varname . "\n";
      my @mkspecs = split(/;/,$mkspec);
      foreach $mkspec (@mkspecs) {
      local SPEC;
      open (SPEC, "<$mkspec") or next;
      while (<SPEC>) {
      if ($_ =~ /\s      include((.+))/) {
      # open the included mkspec
      my $oldcwd = getcwd();
      (my $volume, my $directories, my $file) = File::Spec->splitpath($mkspec);
      my $newcwd = "$volume$directories";
      chdir $newcwd if $newcwd;
      $varvalue = retrieveQMakespecVar($1, $varname);
      chdir $oldcwd;
      } elsif ($_ =~ /$varname\s*=\s*([^\s]+)/) {
      $varvalue = $1;
      last;
      }
      }
      close SPEC;
      last if defined($varvalue);
      }
      return $varvalue;
      }
      @
      (Continued in next post)

    Helmut Mülner

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  • H Offline
    H Offline
    hmuelner
    wrote on last edited by
    #72

    (Continued)

    • cd d:\Qt\qt5\qtwebkit
    • set PATH=%PATH%;d:\Qt\qt5\gnuwin32\bin
    • set QMAKEPATH=D:\Qt\qt5\qtwebkit\Tools\qmake
    • perl Tools\Scripts\build-webkit --qt

    It now fails in qtwebkit\Source\WebCore:

    nmake.exe -f Makefile.WebCore.DerivedSources

    breaks with: NMAKE : fatal error U1095: expanded command line 'echo D:/Qt/qt5/qtwebkit/Source/WebCore/Modules/geolocation/Geolocation.idl ...[lots of idl files] ... | tr ' ' '\n' > generated/idl_files.tmp && perl -ID:/Qt/qt5/qtwebkit/Source/WebCore/bindings/scripts D:/Qt/qt5/qtwebkit/Source/WebCore/bindings/scripts/resolve-supplemental.pl --defines "LANGUAGE_JAVASCRIPT=1 ENABLE_CHANNEL_MESSAGING=1 ENABLE_SQL_DATABASE=1 ENABLE_DATALIST=1 ENABLE_WORKERS=1 ENABLE_SHARED_WORKERS=1 ENABLE_XSLT=1 ENABLE_FILTERS=1 ENABLE_CSS_FILTERS=1 ENABLE_SVG=1 ENABLE_JAVASCRIPT_DEBUGGER=1 ENABLE_WEB_SOCKETS=1 ENABLE_WEB_TIMING=1 ENABLE_TOUCH_EVENTS=1 ENABLE_GESTURE_EVENTS=1 WTF_USE_TILED_BACKING_STORE=1 ENABLE_NOTIFICATIONS=1 ENABLE_DETAILS=1 ENABLE_METER_TAG=1 ENABLE_PROGRESS_TAG=1 ENABLE_BLOB=1 ENABLE_REQUEST_ANIMATION_FRAME=1" --idlFilesList generated/idl_files.tmp --supplementalDependencyFile generated/supplemental_dependency.tmp --idlAttributesFile D:/Qt/qt5/qtwebkit/Source/WebCore/bindings/scripts/IDLAttributes.txt --preprocessor "D:\Qt\qt5\qtbase\bin\moc.exe -E"' too long

    (the command line is approx. 31400 characters long).

    Does anybody have an idea how to fix this section in DerivedSources.pri?
    @resolveSupplemental.input = IDL_ATTRIBUTES_FILE
    resolveSupplemental.script = $$RESOLVE_SUPPLEMENTAL_SCRIPT

    FIXME : We need to use only perl at some point.

    resolveSupplemental.commands = echo $$IDL_BINDINGS | tr ' ' '\n' > $$IDL_FILES_TMP &&
    perl -I$$PWD/bindings/scripts $$resolveSupplemental.script
    --defines "$${FEATURE_DEFINES_JAVASCRIPT}"
    --idlFilesList $$IDL_FILES_TMP
    --supplementalDependencyFile ${QMAKE_FUNC_FILE_OUT_PATH}/$$SUPPLEMENTAL_DEPENDENCY_FILE
    --idlAttributesFile $${IDL_ATTRIBUTES_FILE}
    --preprocessor "$${QMAKE_MOC} -E"
    resolveSupplemental.output = $$SUPPLEMENTAL_DEPENDENCY_FILE
    resolveSupplemental.add_output_to_sources = false
    resolveSupplemental.depends = $$PWD/bindings/scripts/IDLParser.pm $$IDL_BINDINGS
    GENERATORS += resolveSupplemental
    @

    Helmut Mülner

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  • H Offline
    H Offline
    hmuelner
    wrote on last edited by
    #73

    Build qt5 on Windows 7 with VS2010 (next try, hope this is not a double post).

    I tried again with the version from 2012-03-21 with this configuration:

    configure -confirm-license -opensource -debug-and-release -platform win32-msvc2010 -fast -mp -opengl desktop -nomake tests -nomake examples

    nmake generated the following files in qtbase/bin:

    qmake.exe
    moc.pdb
    moc.ilk
    moc.exe
    rcc.pdb
    rcc.ilk
    rcc.exe
    qdoc.pdb
    qdoc.ilk
    qdoc.exe
    uic.pdb
    uic.ilk
    uic.exe
    QtCored5.dll
    QtCore5.dll
    QtNetworkd5.dll
    QtNetwork5.dll
    QtSqld5.dll
    QtSql5.dll
    QtGuid5.dll
    QtGui5.dll
    QtXmld5.dll
    QtXml5.dll
    QtWidgetsd5.dll
    QtWidgets5.dll
    QtTestd5.dll
    QtTest5.dll
    QtPrintSupportd5.dll
    QtPrintSupport5.dll
    QtConcurrentd5.dll
    QtConcurrent5.dll
    QtOpenGLd5.dll
    QtOpenGL5.dll
    QtSvgd5.dll
    QtSvg5.dll
    phonond5.dll
    phonon5.dll
    QtXmlPatternsd5.dll
    QtXmlPatterns5.dll
    xmlpatterns.ilk
    xmlpatterns.pdb
    xmlpatterns.exe
    xmlpatternsvalidator.pdb
    xmlpatternsvalidator.ilk
    xmlpatternsvalidator.exe
    QtScriptd5.dll
    QtScript5.dll
    QtScriptToolsd5.dll
    QtScriptTools5.dll
    QtV8d5.dll
    QtV85.dll
    QtQmld5.dll
    QtQml5.dll
    QtQuickd5.dll
    QtQuick5.dll
    QtQuickTestd5.dll
    QtQuickTest5.dll
    qmlscene.ilk
    qmlscene.pdb
    qmlscene.exe
    qmlplugindump.ilk
    qmlplugindump.pdb
    qmlplugindump.exe
    qmlmin.pdb
    qmlmin.ilk
    qmlmin.exe
    qmlprofiler.pdb
    qmlprofiler.ilk
    qmlprofiler.exe
    qmltestrunner.pdb
    qmltestrunner.ilk
    qmltestrunner.exe
    QtQuick1d5.dll
    QtQuick15.dll
    qmlviewer.ilk
    qmlviewer.pdb
    qmlviewer.exe
    idc.ilk
    idc.pdb
    idc.exe

    Building of webkit failed when trying to link jsc.exe with a lot of warnings about importing locally defined symbols from JavaScriptCore.lib and 24 unresolved external symbols:
    JSC::evaluate
    JSC::checkSyntax
    WTF::randomNumber
    WTF::createThread
    WTF::MetaAllocatorHandle::~MetaAllocatorHandle (12 times)
    WTF::MetaAllocator::freeFreeSpaceNode
    WTF::PassRefPtr<class WTF::MetaAllocatorHandle>
    WTF::MetaAllocator::MetaAllocator
    WTF::cryptographicallyRandomNumber (4 times)

    Any guesses how to correct this?

    Helmut Mülner

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  • H Offline
    H Offline
    hmuelner
    wrote on last edited by
    #74

    Build qt5 on Windows 7 with VS2010 (continued)

    I could build all other modules (using nmake module-xxx) out of the box with the exception of qtmodule where moc could not parse dsserviceplugin.h because of a comma in Q_PLUGIN_METADATA. After correcting this it also built successfully.

    Helmut Mülner

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  • H Offline
    H Offline
    hmuelner
    wrote on last edited by
    #75

    qtscript and qtwebkit contain different versions of JavaScriptCore - it looks like syncing qt5 modules does not yet work perfectly ;-)

    Helmut Mülner

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  • S Offline
    S Offline
    situ117
    wrote on last edited by
    #76

    Hi,

    I am trying to build Qt5 on Chakra Linux. I have Xcb libraries installed, but when I start configuration script I get an error saying:

    @No QPA platform plugin enabled!
    If you really want to build without a QPA platform plugin you must pass
    -no-xcb and -no-eglfs to configure. Doing this will
    produce a Qt that cannot run GUI applications.
    The dependencies needed for xcb to build are listed in
    src/plugins/platforms/xcb/README@

    What I am missing here ?

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  • S Offline
    S Offline
    situ117
    wrote on last edited by
    #77

    So the package I was missing was : xcb-util-keysyms

    configure script was succesful after I installed this package.

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  • S Offline
    S Offline
    subbul
    wrote on last edited by
    #78

    i am facing compilation error in building qt5 (not webkit yet)
    I am using Ubuntu, with all xcb and other dependency installed using apt-get

    configure was successful, whereas build failed in "wayland" (error log below).
    Any clue on the wayland header files mismatch or version problems?

    @
    _make[4]: Entering directory `/home/xyz/build/newqt5/qt5/qtwayland/src/plugins/platforms/wayland'
    g++ -c -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -D_REENTRANT -Wall -W -fPIC -DQT_NO_LIBUDEV -DQ_PLATFORM_WAYLAND -DQT_NO_WAYLAND_XKB -DQT_WAYLAND_GL_SUPPORT -DQT_WAYLAND_WINDOWMANAGER_SUPPORT -DQ_FONTCONFIGDATABASE -DQT_COMPILES_IN_HARFBUZZ -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -I/home/xyz/build/newqt5/qt5/qtbase/mkspecs/linux-g++ -I. -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore/5.0.0/QtCore -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui/5.0.0/QtGui -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport/5.0.0/QtPlatformSupport -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport -I/home/xyz/build/newqt5/qt5/qtbase/include -I../../../shared -Igl_integration/xcomposite_share -I.moc/debug-shared -o .obj/debug-shared/qwaylandintegration.o qwaylandintegration.cpp
    In file included from qwaylandshmwindow.h:45:0,
    from qwaylandintegration.cpp:46:
    qwaylandwindow.h:112:18: error: ‘wl_callback_listener’ does not name a type
    make[4]: *** [.obj/debug-shared/qwaylandintegration.o] Error 1
    _
    @

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  • S Offline
    S Offline
    subbul
    wrote on last edited by
    #79

    Issue is solved after downloading the release from
    http://releases.qt-project.org/qt5.0/alpha/

    instead of GIT

    [quote author="subbul" date="1333560508"] i am facing compilation error in building qt5 (not webkit yet)
    I am using Ubuntu, with all xcb and other dependency installed using apt-get

    configure was successful, whereas build failed in "wayland" (error log below).
    Any clue on the wayland header files mismatch or version problems?

    @
    _make[4]: Entering directory `/home/xyz/build/newqt5/qt5/qtwayland/src/plugins/platforms/wayland'
    g++ -c -pipe -g -fvisibility=hidden -fvisibility-inlines-hidden -D_REENTRANT -Wall -W -fPIC -DQT_NO_LIBUDEV -DQ_PLATFORM_WAYLAND -DQT_NO_WAYLAND_XKB -DQT_WAYLAND_GL_SUPPORT -DQT_WAYLAND_WINDOWMANAGER_SUPPORT -DQ_FONTCONFIGDATABASE -DQT_COMPILES_IN_HARFBUZZ -DQT_PLUGIN -DQT_GUI_LIB -DQT_CORE_LIB -I/home/xyz/build/newqt5/qt5/qtbase/mkspecs/linux-g++ -I. -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore/5.0.0/QtCore -I/home/xyz/build/newqt5/qt5/qtbase/include/QtCore -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui/5.0.0/QtGui -I/home/xyz/build/newqt5/qt5/qtbase/include/QtGui -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport/5.0.0 -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport/5.0.0/QtPlatformSupport -I/home/xyz/build/newqt5/qt5/qtbase/include/QtPlatformSupport -I/home/xyz/build/newqt5/qt5/qtbase/include -I../../../shared -Igl_integration/xcomposite_share -I.moc/debug-shared -o .obj/debug-shared/qwaylandintegration.o qwaylandintegration.cpp
    In file included from qwaylandshmwindow.h:45:0,
    from qwaylandintegration.cpp:46:
    qwaylandwindow.h:112:18: error: ‘wl_callback_listener’ does not name a type
    make[4]: *** [.obj/debug-shared/qwaylandintegration.o] Error 1
    _
    @[/quote]

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  • Y Offline
    Y Offline
    yanghaijun
    wrote on last edited by
    #80

    i building qt5 with wingw32,but have a error:

    qsvgstyle_p.h:65:20: qdebug.h:No such file or directory

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  • J Offline
    J Offline
    jlayt
    wrote on last edited by
    #81

    Hi, trying to build qtbase on WinXP using MSVC2008, followed the instructions exactly and it builds OK, but when when I try to run I get:

    "Failed to load platform plugin "". Available platforms are: windows:

    Any hints?

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  • S Offline
    S Offline
    stottle
    wrote on last edited by
    #82

    I am trying to build the qt5-alpha source from the zip download as I don't have git on my windows machine. Is there any way to do a "make clean"/"make confclean" without git?

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  • P Offline
    P Offline
    Philius
    wrote on last edited by
    #83

    I just happened to notice your posts - I didn't get an email notification.

    According to configure, "To reconfigure, run 'make confclean' and 'configure'.".
    Well you probably know that at least with Qt5 alpha, that doesn't work.

    I'm on Debian so I can't offer any Windows wisdom, but for "make clean" I just delete the directory and re-unpack the alpha .tar.bz2 again.

    I'm in the dark as to how to build/use the QtDeclarative component.
    It appears that the header I'm looking for - "QtDeclarative/QDeclarativeComponent" isn't installed although it's in the source tree - yes I built/installed qtjsbackend and qtdeclarative.

    Also, it would be nice if Qt5 beta had a top-level makefile that included targets for
    linux-x86-32-gcc-x11
    linux-x86-64-gcc-x11
    windows7-64-msvc2010

    and so on, so we could be sure we're building against a known and tested build configuration.

    And yes, it should fail if any prerequisites are missing (and maybe print warnings if they are different versions).

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  • T Offline
    T Offline
    thinks
    wrote on last edited by
    #84

    Hi All,

    I'm trying to building Qt5 om Mac OSX 10.7. Following the instructions given here:

    http://qt-project.org/wiki/Building_Qt_5_from_Git

    However, I'm running into an issue in the build-step which I'm not
    sure how to solve. One of the errors I'm getting is the following:

    gcc: error: tools/qlocale_mac.mm: Objective-C++ compiler not installed
    on this system

    I will give a detailed step-by-step descriptions of my process below,
    assuming the starting point to be a blank shell with PWD=$HOME:

    (1) git clone git://gitorious.org/qt/qt5.git qt5 [check!]

    (2) cd qt5 [check!] :)

    (3) perl init-repository --no-webkit [check! Does its job without complaining. I can provide the log if necessary]

    (4) unset QTDIR [check!] :)

    (5) export PATH="$PWD/qtbase/bin:$PWD/qtrepotools/bin:$PATH" [check!] :)

    (6) ./configure -developer-build -opensource -nomake examples -nomake
    tests [check! See below]

    Get a few warnings about some Qt header not containing macros, e.g.:

    QtCore: WARNING:
    /Users/thinks/qt5/qtbase/src/corelib/qtcoreversion.h does
    not include QT_BEGIN_HEADER

    but they don't seem severe. Other relevant output:

    Build type: macx-clang
    Architecture: x86_64
    Host architecture: x86_64
    Platform notes:

    • Also available for Mac OS X: macx-g++

    (7) ./build -j 4

    This is where the trouble begins. The following (first) error is given:

    [Lots of output without errors...]
    qabstractanimation.h -o .moc/debug-shared/moc_qabstractanimation.cpp
    gcc: error: tools/qlocale_mac.mm: Objective-C++ compiler not installed
    on this system
    gcc: error: kernel/qcore_mac_objc.mm: Objective-C++ compiler not
    installed on this system

    Similar errors are reported further on as well, all with the same
    reason given. It seems somewhat strange that gcc is used over g++, but
    at the moment I'm not really sure why this happens.

    Some info about gcc:

    [thinks@wiggs ~] gcc --version
    gcc (GCC) 4.8.0 20120408 (experimental)

    Any advice greatly appreciated!

    Thanks,

    T

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  • L Offline
    L Offline
    ludde
    wrote on last edited by
    #85

    @thinks, did you try to "build the 5.0 alpha":http://qt-project.org/wiki/Qt-5-Alpha-building-instructions instead? Might be easier than building from git.

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  • T Offline
    T Offline
    thinks
    wrote on last edited by
    #86

    Thanks, Ludde! :)

    We finally got it working here. The following was required:

    • Grab latest from Qt5 git repo.
      git clone git://gitorious.org/qt/qt5.git qt5

    • Use Qt's provided tool to initialize the repo.
      cd qt5
      perl init-repository --no-webkit

    • Set up our build environment.
      unset QTDIR
      export PATH="$PWD/qtbase/bin:$PWD/qtrepotools/bin:$PATH"
      export PATH=/Applications/XCode.app/Contents/Developer/usr/bin:$PATH
      export CPP=clang++
      export CC=clang
      echo PATH $PATH

    • Pre-build configuration. Note that we are forcing it to build using
      the Xcode compilers.
      ./configure -no-pch -developer-build -confirm-license -opensource
      -release -nomake demos -nomake examples -arch x86 -sdk
      /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk

    • Build. We could increase the number of course to improve speed once
      we are convinced that this works well...
      ./build -j 1

    Not sure all of that stuff is required though, but because the build time is quite steep (even with j > 1) we didn't have time to narrow it down.

    Cheers,

    T

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  • B Offline
    B Offline
    Bloops
    wrote on last edited by
    #87

    hi .

    I am currently doing the Qt5 manipulation and I have one little question ^^ .

    Is it possible to realize a configuration (./configure) in static Qt5 mode (-static) by incorporing the QtSerialPort class, which we must add to our pre-existing library thanks to that manipulation: http://qt-project.org/wiki/QtSerialPort ?

    If this is not possible to change QtSerialPort in static library, but just the QT5 library . When I will compile my project which uses QtSerialPort, will it run like a static program or I need to include a .so (or dll) ?

    Sorry for my bad english .

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