[QGIS-Developer] Cannot load QGIS source code in QTCreator

[Andrea Aime]

Thanks everybody for the followup! I'm answering this mail but I'll
integrate comments about the others too.

On Thu, Nov 15, 2018 at 8:26 AM Alessandro Pasotti <apasotti at gmail.com>
wrote:

> Hi Andrea,
>
> I've never seen that particular error, I'd look into cmake installation
> and/or version.
>

See below


> The vast majority of QGIS C++ developers uses Qt Creator on a daily basis
> on different platforms, what work for me here is:
>
> Ubuntu xenial
>
> QtCreator: 4.7.2 installed from https://www.qt.io/download
> cmake version 3.10.2 self-built from sources
> Qt 10.0.1 self-built from sources
>
> Notice that none of the above was installed with apt, the main reason is
> that xenial is a little bit old, but IIRC that was also to avoid some
> problems in the integration of the different components.
>

I see... on my machine I have everything installed from apt instead,
versions are:

   - QT Creator 4.5.2
   - cmake 3.10.2
   - QT is 5.9.5 (you have QT 10 instead??)

 In other comments I've been invited to build from sources using cmake,
which I did, worked, but then trying to start qgis as built results in this:

aaime at colossus ~/devel/qgis/build-master (master) $ export
LD_LIBRARY_PATH=/home/aaime/apps/lib
aaime at colossus ~/devel/qgis/build-master (master) $
/home/aaime/apps/bin/qgis
src/app/main.cpp: 469: (main) [0ms] Starting qgis main
src/core/qgsmessagelog.cpp: 29: (logMessage) [0ms] 2018-11-15T10:04:25
QGIS[1] Successfully loaded globalsettingsfile path:
/home/aaime/apps/share/qgis/resources/qgis_global_settings.ini
src/core/qgsapplication.cpp: 158: (QgsApplication) [50ms] loading of qt
translation failed /usr/share/qt5/translations/qt_it_IT
src/app/qgsversionmigration.cpp: 92: (requiresMigration) [1ms] File version
is=2
src/app/qgscustomization.cpp: 945: (loadDefault) [4ms] Status path =
/Customization/status
src/app/qgscustomization.cpp: 946: (loadDefault) [0ms] status = 0
src/app/qgscustomization.cpp: 954: (loadDefault) [0ms] Default
customization not found in
/home/aaime/apps/share/qgis/resources/customization.ini
src/core/qgsfontutils.cpp: 277: (loadStandardTestFonts) [13ms] Test font
'QGIS Vera Sans' (Bold) loaded from testdata.qrc
src/core/qgsfontutils.cpp: 277: (loadStandardTestFonts) [7ms] Test font
'QGIS Vera Sans' (Roman) loaded from testdata.qrc
src/core/qgsapplication.cpp: 1706: (setMaxThreads) [71ms] maxThreads: -1
src/core/qgsapplication.cpp: 1722: (setMaxThreads) [0ms] set QThreadPool
max thread count to 16
src/core/qgsruntimeprofiler.cpp: 54: (end) [1ms] PROFILE: User profile
manager - 0
src/core/qgsruntimeprofiler.cpp: 54: (end) [46ms] PROFILE:
qgisapp/startup/Setting up UI - 0.046
src/core/qgsruntimeprofiler.cpp: 54: (end) [22ms] PROFILE:
qgisapp/startup/Checking database - 0.022
src/core/qgsruntimeprofiler.cpp: 54: (end) [0ms] PROFILE:
qgisapp/startup/Creating theme folder - 0
src/core/qgsproviderregistry.cpp: 105: (init) [2ms] Checking
/home/aaime/apps/lib/qgis/plugins for provider plugins
src/core/qgsproviderregistry.cpp: 158: (init) [7ms] Checking
/home/aaime/apps/lib/qgis/plugins/libbasicauthmethod.so: ...invalid (no
isProvider method)
src/core/qgsproviderregistry.cpp: 150: (init) [2ms] Checking
/home/aaime/apps/lib/qgis/plugins/libcoordinatecaptureplugin.so: ...invalid
(has type method)
QGIS died on signal 11Could not attach to process.  If your uid matches the
uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operazione non permessa.
No thread selected
No stack.
gdb returned 0
Annullato

I'm starting to think I'd be better of using a virtual machine where one
can do any custom setup required.
Someone was hinting at a video showing how to do that, using a vagrant
setup. Is the same also documented anywhere, like,
in text form?

Cheers
Andrea

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