[solved] Glib libgpod mac os x Compile error

  • I am trying to include libgpod in my application so I can communicate with Ipods. I have compiled and installed libgpod-0.8.0 , then I got error that it requires Glib.

    I installed Glib using brew install glib. However now when I try and compile it throws up error:

    /usr/local/Cellar/glib/2.38.2/include/glib-2.0/glib/gtypes.h:34: error: 'glibconfig.h' file not found
    #include <glibconfig.h>

    Only thing I could find was that i need to include pkg-config --cflags glib-2.0 when compiling . Not sure how to do this though or if that is the problem?

    In my pro file I have added :

    @INCLUDEPATH += /usr/local/include/gpod-1.0/gpod
    INCLUDEPATH += pkg-config --cflags glib-2.0
    INCLUDEPATH += /usr/local/Cellar/glib/2.38.2/include/glib-2.0

    LIBS += /usr/local/Cellar/glib/2.38.2/lib/libglib-2.0.dylib
    LIBS += pkg-config --libs glib-2.0

    my code in mainwindow is :

    @Itdb_iTunesDB *db;@

    I am running mac os x 10.9.1 and Qt Creator 2.8.1
    Based on Qt 5.1.1 (Clang 3.1, 64 bit)

    I have also tried comiling glib from source without homebrew , but same issue. It has been 3 days now I have been searching for a solution and cannot find anything on it.


  • Lifetime Qt Champion

    Hi and welcome to devnet,

    You're not using pkg-config correctly with qmake
    Try this
    CONFIG += link_pkgconfig
    PKGCONFIG += glib-2.0

    Just to be sure, do you have pkg-config installed ?

  • Just tried adding the above into my .pro file and now get the follwing error:

    :-1: error: Package glib-2.0 not found

    Yes pkg-config is already installed using hombrew.

  • Lifetime Qt Champion

    then run

    @pkg-config --list-all | grep glib@

    To see whether it knows about any glib installed

  • from terminal I have ran pkg-config --listall which has glib-2.0 , so seems like qt is not seeing pkg-config?

  • Output of pkg-config --list-all | grep glib:

    gio-unix-2.0 GIO unix specific APIs - unix specific headers for glib I/O library
    taglib_c TagLib C Bindings - Audio meta-data library (C bindings)
    gio-2.0 GIO - glib I/O library
    glib-2.0 GLib - C Utility Library
    taglib TagLib - Audio meta-data library

  • Lifetime Qt Champion

    So it's likely a path problem. What you can do is close Qt Creator, and call

    @open your_project.pro@

    from the command line, that should start Qt Creator with the additional paths setup you might have for your command line. If it doesn't work, remove the your_project.pro.user file after having closed Qt Creator, and call open again

  • Still the same issue. It cannot even parse the .pro file now. Below is my .pro file:

    @QT += core gui

    greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

    TARGET = tesrre
    TEMPLATE = app

    SOURCES += main.cpp

    HEADERS += mainwindow.h

    FORMS += mainwindow.ui

    CONFIG += link_pkgconfig
    PKGCONFIG += glib-2.0

    INCLUDEPATH += /usr/local/include/gpod-1.0/gpod
    INCLUDEPATH += /usr/local/Cellar/glib/2.38.2/include/glib-2.0

    LIBS += /usr/local/Cellar/glib/2.38.2/lib/libglib-2.0.dylib
    LIBS +=/usr/local/lib/libgpod.4.dylib@

    Tired adding PKG_CONFIG_PATH+=/usr/local/Cellar/pkg-config/0.28/bin
    into qmake additional arguments, and also added a new variable under system environment but did not change anything.

  • Lifetime Qt Champion

    What do you mean by "It cannot even parse the pro file" ?
    glib-2.0 should be handled by pkg-config so no need for any other setup.

    @LIBS += -L /usr/local/lib -lgpod@

    Is more likely for gpod

  • I mean that I cannot click the green build and run icon, as it says it cannot parse .pro file.

    gpod was fine before the way i had added it and if i comment out :

    @CONFIG += link_pkgconfig
    PKGCONFIG += glib-2.0@

    then it parses fine. But I have commented out the gpod bit for now just to make sure, and still the same.

    All I have added to the .pro file now is:

    @CONFIG += link_pkgconfig
    PKGCONFIG += glib-2.0@

    If I open in qt creator 3. then it still has the parse issue , but says:

    Project ERROR: Package glib-2.0 not found

  • Lifetime Qt Champion

    Do you have several Qt Creator installed ?

  • Yeah I suppose. I have Qt5.1.1
    Qt5.2.0 folders both in my user folder. Not sure why I have two, Should I try and remove one?

    Qt5.1.1 has Qt creator 2.8

    Qt5.2.0 has Qt creator 3.0.0

  • Lifetime Qt Champion

    Then you have your Qt 5.1.1 Qt Creator starting and this one can't handle 5.2.

    Try calling open with -b /Path/to/Your/5.2/Qt Creator.app

  • I tried

    open tesrre.pro -b /Users/tom/Qt5.2.0/QtCreator.app

    And get:

    LSGetApplicationForInfo() failed with error -10814 while trying to determine the application with bundle identifier /Users/tom/Qt5.2.0/QtCreator.app.

  • Lifetime Qt Champion

    Sorry, my bad, it's -a

  • I have uninstalled all versions of Qt , and reinstalled from the latest 5.2.1

    Created a new application and tried again. Now it is asking me for glib2-development package.

    Cannot find this on homebrew and no where to compile from source. So have just installed Macports and now installed glib2-devel. seems like it just installed the same files that were already present with the homebrew port, with some documentation.

    Still not working and error saying:

    Project ERROR: glib-2.0 development package not found

  • Lifetime Qt Champion

    You might need to add /opt/local/lib/pkgconfig to your PKG_CONFIG_PATH

  • I think the PKG_CONFIG_PATH is fine as it is now seeing glib-2.0 , but is now asking for development package.

    After installing with macports doing pkg config --list-all shows the same as before , so think the development package has not installed.
    Not really sure what I am supposed to see after installing it.
    Do you know a better way of installing?

  • Lifetime Qt Champion

    Do you have something like

    @export PKG_CONFIG_PATH=/opt/local/lib/pkgconfig:$PKG_CONFIG_PATH@

    in your .profile file ?

  • Yeah just added something similar to my .profile . It contains the following:

    export PATH=/usr/local/bin:$PATH
    export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH

    Still the same. Tried launching from terminal again.

    Funny, I have tried on a ubuntu install and it just works. Was amazed at how easy it was.

  • Lifetime Qt Champion

    Did you source the file before testing ? Otherwise the changes won't take effect

  • No , I did not know about that. Just tried but the same.

    Just found the follwing page, which has helped a bit:


    Basically I have added the following to my .pro file:

    @QT_CONFIG -= no-pkg-config@

    So now I have :

    @QT_CONFIG -= no-pkg-config
    CONFIG += link_pkgconfig
    PKGCONFIG += libgpod-1.0 taglib@

    This however will only work if I launch the project from within terminal.
    There are suggestions of fixes for Qt Creator , but none of them seem to work.

  • Lifetime Qt Champion

    I personally always start Qt Creator from the command line to ensure that it will have the environment set by .profile

  • Yeah , I will just live with it like this for now. Thanks for the prompt help SGaist.

    Now to get the libs working in windows. That should be fun.

  • Lifetime Qt Champion

    You might be interested by "this":http://stackoverflow.com/a/4567308 and "this":http://stackoverflow.com/a/7502061

  • Thanks for the above. I done the following:

    sudo nano /etc/launchd.conf

    export PKG_CONFIG_PATH=/usr/local/lib/pkgconfig:$PKG_CONFIG_PATH

    grep -E "^setenv" /etc/launchd.conf | xargs -t -L 1 launchctl

    Now when I launch Qt creator from dock , it find the libs fine.

    Thanks , again.

  • Lifetime Qt Champion

    You're welcome !

    Glad you succeeded :)

    Since that you have everything working now, please update the thread title prepending [solved] so that other forum users may know solution has been found :)

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