[Qgis-developer] QGIS setup with Qt 5 on mac

[Matthias Kuhn]

Hi Diane and welcome aboard,

I also didn't manage to compile master on osx yet.

Some more information can be found here also:

https://github.com/OSGeo/homebrew-osgeo4mac/pull/146#issuecomment-254011621

I think most of the dependencies should meanwhile be available on
homebrew (but not sure).

Regards
Matthias

On 10/31/2016 06:56 PM, David Marteau wrote:
> Hi
> 
> I will speak with my own experience using and compiling Qgis on Mac (El capitan and Maverick):
> 
> First I use Macport: MacPort use clang/libc++ by default (at least with XCode 5.3 on Maverick, 7.3 on El capitan) so this should solve one of your problems.
> I have installed qt5 from MacPort without problems. 
> 
> The problems arise with some ports that do not fully support qt5 variants and you need to tweak some portfiles: qscintilla and py-qscintilla are one of them and are required by Qgis. 
> If you are interested I can give you my diff files for portfiles.
> 
> I had to build qwt directly from sources because tweaking Macport portfiles was too painful, but I did not encounter any serious problems as far as I can remember.
> 
> No source code was needed to be patched, only compilation configurations. 
> 
> Once you get all dependencies you need to set the cmake options accordingly to the path of your installation:
> 
> Here is my defines:
> 
> »   »   -DCMAKE_INSTALL_PREFIX:PATH=/Applications \
> »   »   -DWITH_SERVER=ON \
> »   »   -DWITH_PYSPATIALITE=ON \
> »   »   -DPYTHON_CUSTOM_FRAMEWORK:PATH=/opt/local/Library/Frameworks/Python.framework  \
> »   »   -DEXPAT_INCLUDE_DIR:PATH=/opt/local/include \
> »   »   -DEXPAT_LIBRARY:FILEPATH=/opt/local/lib/libexpat.dylib \
> »   »   -DSQLITE3_INCLUDE_DIR:PATH=/opt/local/include \
> »   »   -DSQLITE3_LIBRARY:FILEPATH=/opt/local/lib/libsqlite3.dylib \
> »   »   -DQT_QMAKE_EXECUTABLE:FILEPATH=/opt/local/libexec/qt5/bin/qmake \
> »   »   -DQWT_INCLUDE_DIR:PATH=/usr/local/qwt-6.1.3/lib/qwt.framework/Versions/6/Headers \
> »   »   -DQWT_LIBRARY:FILEPATH=/usr/local/qwt-6.1.3/lib/qwt.framework/Versions/6/qwt \
> »   »   -DQCA_INCLUDE_DIR:PATH=/opt/local/include/qca \
> »   »   -DQCA_LIBRARY:FILEPATH=/opt/local/lib/libqca.dylib \
> »   »   -DQSCINTILLA_INCLUDE_DIR:PATH=/opt/local/libexec/qt5/include \
> »   »   -DQSCINTILLA_LIBRARY:FILEPATH=/opt/local/libexec/qt5/lib/libqscintilla2.dylib \
> »   »   -DQT_LRELEASE_EXECUTABLE:FILEPATH=/opt/local/libexec/qt5/bin/lrelease \
> 
> I hope that full support for qt5 will be available from Macport soon, but for now I have managed to compile Qgis from the master branch without struggling too much. 
> 
> Best,
> David 
> 
>> Le 31 oct. 2016 à 16:12, Diane Perez <lintawa at gmail.com> a écrit :
>>
>> Dear QGIS developers,
>>
>> First of all, thank you very much for the great job, I have been a very happy user for years !
>>
>> I would like to contribute now to the development, but I found myself stuck at the installation of dependencies.
>>
>> According to the instructions of the INSTALL file provided with the source code, mac users should use Qt 4 and compile and install a bunch of dependencies for which binaries are not available (mainly Spatialindex, SIP, QScintilla2, PyQt, Qwt and bison) before being able to compile QGIS. I followed the instructions and got stuck at compiling QGIS as the master now requires Qt 5.
>>
>> Now as I actually started by installing Qt 5 by mistake, I had the opportunity to see that it leads to a lot of problems to compile the dependencies. As far as I understand, Qt 5 requires C++11, which means one must use the new libc++ library instead of the old libstdc++ (at least on my configuration, with El Capitan and clang/llvm). Some modifications are such that mixing both is not possible, so everything must be compiled from start with C++11 and libc++. Unfortunately most of the dependencies I mention above do not compile without tweaking, and I stopped doing it when it started meaning not only modifying the Makefiles but the code itself...
>>
>> I guess some of you work on mac, and have a far better understanding of all this than me. So my question is : how did you install those dependencies to compile the last version of QGIS with Qt 5 ? 
>>
>> Did you have to compile again all of them or only a subset using Qt 5 and C++11 ? If so, how did you do it ? I got stuck at Qwt (6.1.3) which uses lots of functions deprecated in Qt 5.
>>
>> I hope someone can give me pointers, as I would really like to contribute to QGIS (and hopefully fix a few bugs bugging me) !
>>
>> Best regards,
>> Diane
>>
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