Make Qt4 Multitouch fix conditional for Qt5

[mixxxbot]

Reported by: daschuer
Date: 2014-03-02T20:11:12Z
Status: Fix Released
Importance: Low
Launchpad Issue: lp1286888
Tags: qt5

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The merge of #76 brakes Qt5 builds.
This should be fixed.

[mixxxbot]

Commented by: daschuer
Date: 2014-03-02T22:28:06Z

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After 0429f16, Compiling is working again, but the resulting binary segfaults. So I am not able to test Multi touch and touch_shift with Qt5.

This is the backtrace:

Program received signal SIGSEGV, Segmentation fault.
QList (this=0x7fffffffdb60, 
    this@entry=0x7fffd80af9a0 <Mixxx::supportedFileExtensions()>)
    at /usr/include/qt4/QtCore/qlist.h:121
121	    inline QList() : d(&QListData::shared_null) { d->ref.ref(); }
(gdb) bt --all
#0  QList (this=0x7fffffffdb60, 
    this@entry=0x7fffd80af9a0 <Mixxx::supportedFileExtensions()>)
    at /usr/include/qt4/QtCore/qlist.h:121
mixxxdj/mixxx#4910  Mixxx::SoundSourceM4A::supportedFileExtensions ()
    at plugins/soundsourcem4a/soundsourcem4a.cpp:197
mixxxdj/mixxx#4911  0x00007fffd80af9c3 in Mixxx::supportedFileExtensions ()
    at plugins/soundsourcem4a/soundsourcem4a.h:76
mixxxdj/mixxx#4912  0x000000000097200e in SoundSourceProxy::getPlugin (
    lib_filename="/usr/local/lib/mixxx/plugins/soundsource/libsoundsourcem4a.so") at src/soundsourceproxy.cpp:258
mixxxdj/mixxx#4913  0x00000000009734cd in SoundSourceProxy::loadPlugins ()
    at src/soundsourceproxy.cpp:140
mixxxdj/mixxx#4914  0x000000000047794a in main (argc=1, argv=0x7fffffffe158)
    at src/main.cpp:258
(gdb) 
/build/buildd/gdb-7.6.1/gdb/frame.c:1990: internal-error: get_frame_pc_if_available: Assertion `frame->next != NULL' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.

[mixxxbot]

Commented by: rryan
Date: 2016-01-03T19:43:18Z

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FWIW master builds with qt 5.5.1 successfully on OS X 10.11.2.

[mixxxbot]

Issue closed with status Fix Released.