[gecode-users] Mac XCode configuration

[Tomas Lidén]

Thanks for quick and adequate response!
But still there's trouble... see below
/T

Guido Tack wrote 2014-04-07 02:03:
> Hi,
>
> to add a system folder such as /usr/local, open the "Add Files to..." dialog, press Command+Shift+G, and enter the path directly.
Great. That got me halfway.
After adding the frameworks QtGui, QtWidgets and QtCore and adjusting 
the include statements to
#include <QtGui/QtGui>
#include <QtWidgets/QtWidgets>
the compilation ends with the following error:
/usr/local/qt5.1.0/lib/QtCore.framework/Headers/qlist.h:52:10: 
'initializer_list' file not found

According to (http://comments.gmane.org/gmane.comp.lib.qt.user/8357) and 
(the subsequent links) this is due to Qt requiring -stdlib=libc+ (not 
libc++ ?) and c++11 - which is in conflict with libstdc++ that is 
required by Gecode. Hmm.. I can't figure out to get passed this - tried 
varies ways in Xcode, but no luck so far. Should I perhaps download and 
install Qt directly from the source rather than using the version coming 
with Gecode?
> On the command line, I think Xcode may have changed the default paths for frameworks, you could try adding -F/Library/Frameworks to your compiler options.
That almost did the trick. Again I had to add options for selecting 
libstdc++ etc, but still I get an error. After trying the (what I think) 
options that Xcode uses I get:

$ g++ -std=gnu++11 -stdlib=libstdc++ -O3 -F/Library/Frameworks -c money.cpp
money.cpp:1:1: error: expected unqualified-id
<U+001C>/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
^
In file included from money.cpp:38:
In file included from 
/Library/Frameworks/gecode.framework/Headers/driver.hh:41:
In file included from 
/Library/Frameworks/gecode.framework/Headers/minimodel.hh:47:
In file included from 
/Library/Frameworks/gecode.framework/Headers/kernel.hh:127:
/Library/Frameworks/gecode.framework/Headers/kernel/core.hpp:3800:7: 
warning:
       array index 1 is past the end of the array (which contains 1 element)
       [-Warray-bounds]
       x->u.idx[1] = u.idx[1];
       ^        ~
/Library/Frameworks/gecode.framework/Headers/kernel/core.hpp:3829:49: 
note: in
       instantiation of member function
       'Gecode::VarImp<Gecode::Int::BoolVarImpConf>::update' requested here
       VarImp<VIC>* n = x->next(); x->forward()->update(x,sub); x = n;
                                                 ^
/Library/Frameworks/gecode.framework/Headers/kernel/var-imp.hpp:407:50: 
note:
       in instantiation of member function
       'Gecode::VarImp<Gecode::Int::BoolVarImpConf>::update' requested here
Gecode::VarImp<Gecode::Int::BoolVarImpConf>::update(*this,sub);
                                                  ^
/Library/Frameworks/gecode.framework/Headers/kernel/core.hpp:339:7: 
note: array
       'idx' declared here
       unsigned int idx[pc_max+1];
       ^
/Library/Frameworks/gecode.framework/Headers/kernel/core.hpp:3800:21: 
warning:
       array index 1 is past the end of the array (which contains 1 element)
       [-Warray-bounds]
       x->u.idx[1] = u.idx[1];
                     ^     ~
/Library/Frameworks/gecode.framework/Headers/kernel/core.hpp:339:7: 
note: array
       'idx' declared here
       unsigned int idx[pc_max+1];
       ^
2 warnings and 1 error generated.

clang gives the same result..
> Cheers
> Guido
>
> On 7 Apr 2014, at 6:26 am, Tomas Lidén <tomas.liden at liu.se> wrote:
>
>> Hi!
>>
>> I'm running MacOS 10.9.2, Xcode 5.1 (5B130a) and Gecode 4.2.1 - all freshly updated/installed.
>> But being a newbie (both to Xcode and Gecode) and a bit rusty on C++, I have some trouble getting the configurations right..
>>
>> Firstly a great thanks for Guido's help regarding libstdc++ (http://www.gecode.org/pipermail/users/2014-April/004368.html) - which got me past the first blocking point.
>>
>> But now I can't get Qt to work (e.g. examples/queens.cpp). I can see that qt5.1.0 is installed in /usr/local/ but I can't figure out how to add the necessary frameworks (probably the ones in /usr/local/qt5.1.0/lib/.) to the project. For gecode.framework I use File/Add Files to.. and click to /Library/Frameworks - but /usr/local is inaccessible from the Finder interface.. Is there some other mechanism or do I need to add some soft links or similar? (The Add/Existing Frameworks.. mentioned in MGP 2.3.2 I have not found..)
>>
>> BTW, the command line option does not work either as stated in the documentation (MGP 2.3.2), neither with g++ or clang - see the log below. The "default header search path" does not seem to be sufficient.. I guess there's some include or library options that's needed - any help on that as well? (I think this is the reason I have no success in using Eclipse/CDT either..).
>>
>> Thanks for any help or tip you can provide, primarily regarding accessing Qt in Xcode!
>> /Tomas

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