Qt Virtualkeyboard example

[Johannes Kliemann]

Hi Christian,

thanks for your help, I was able to build the virtualkeyboard example
for Genode [1].

Currently it fails run due to missing QtQuick dependencies. Beside that
some called functions are not yet implemented but I think the missing
dependencies make it fail in the first place.

> [init -> basic] Warning: geteuid: geteuid not implemented
> [init -> basic] Warning: getuid: getuid not implemented
> [init -> basic] read_rtc: rtc not configured, returning 0
> [init -> basic] Warning: getpid: getpid not implemented
> [init -> basic] read_rtc: rtc not configured, returning 0
> [init -> basic] JIT is disabled for QML. Property bindings and animations will be very slow. Visit https://wiki.qt.io/V4 to learn about possible solutions for your platform.
> [init -> basic] Error: no plugin found for mmap(-1)
> [init -> basic] Warning: mmap not supported for file descriptor -1
> [init -> basic] Error: no plugin found for mmap(-1)
> [init -> basic] Warning: mmap not supported for file descriptor -1
> [init -> basic] Warning: issetugid called, not yet implemented, returning 1
> [init -> basic] Warning: issetugid called, not yet implemented, returning 1
> [init -> basic] Warning: issetugid called, not yet implemented, returning 1
> [init -> basic] Warning: issetugid called, not yet implemented, returning 1
> [init -> basic] qrc:/Basic.qml:30:1: module "QtQuick" is not installed
> [init -> basic] qrc:/Basic.qml:31:1: module "QtQuick.VirtualKeyboard" is not installed
> [init -> basic] qrc:/Basic.qml:30:1: module "QtQuick" is not installed
> [init -> basic] qrc:/Basic.qml:31:1: module "QtQuick.VirtualKeyboard" is not installed
> [init -> basic] QThread: Destroyed while thread is still running
> [init -> basic] Warning: getpid: getpid not implemented
> [init -> basic] Warning: kill: kill not implemented
> [init -> basic] Warning: _sigaction: _sigaction not implemented
> [init -> basic] Warning: getpid: getpid not implemented
> [init -> basic] Warning: kill: kill not implemented
> [init -> basic] Warning: 4 dangling allocations at allocator destruction time
> [init -> basic] Warning: 10 dangling allocations at allocator destruction time
> [init] child "basic" exited with exit value 1

How can I add QtQuick dependencies on Genode, is there already some code
example?

Thanks and regards,

Johannes

[1]: https://github.com/jklmnn/genode/tree/qt_virtualkeyboard


Am 27.07.2017 um 00:18 schrieb Christian Prochaska:
> Hi Johannes,
> 
> On 26.07.2017 14:42, Johannes Kliemann wrote:
>> Hi,
>>
>> I tried to build the Qt Virtualkeyboard example.
>> I adapted the target.mk of the calculatorform example to point to the
>> correct project file.
>> Make fails at the project file at line 6 with missing separator. This
>> part contains the following:
>>
>> static {
>>     QT += svg
>>     QTPLUGIN += qtvirtualkeyboardplugin
>> }
>>
>>
>> Is there an additional flag required? Manually running qmake && make
>> works fine.
> 
> the Genode build system does not run qmake, but includes the qmake project file as if it were a Makefile. This works well for simple
> project files, but if the project file uses qmake-specific syntax and these parts are relevant, they must be replaced with something
> that GNU make understands. In your case it would probably suffice to just delete the 'static {' line and the '}' line.
> 
> The 'QT' variable gets evaluated in [1] and there's no svg support right now. A port of the Qt5Svg library would include the
> following new files:
> 
> - repos/libports/lib/import/import-qt5_svg.mk
> - repos/libports/lib/mk/qt5_svg.mk
> - repos/libports/lib/mk/qt5_svg_generated.inc
> 
> The 'QTPLUGIN' variable does not get evaluated in the 'target_final.inc' file right now. To do that, I think you would need to add
> each part of the variable content to the LIBS variable (prefixed with 'qt5_'), resulting in 'LIBS += qt5_qtvirtualkeyboardplugin' in
> your case, and then build the plugin as a shared library, similar to the 'qt5_qjpeg' library.
> 
> I've attached the generated include files and a patch with the script used to generate the files, in case you need to change the
> configuration and regenerate them.
> 
> Regards,
> Christian
> 
> [1] https://github.com/genodelabs/genode/blob/master/repos/libports/src/app/qt5/tmpl/target_final.inc
> 
> 
> 
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