[Interest] Xcode 7 beta and Qt 5.5 ?

Michael R Nelson mnelson at sutron.com
Sat Sep 19 16:21:40 CEST 2015

I have similar issues as Robert, regardless of whether I use Qt Creator that came with Qt 5.5, or install and use Qt Creator 3.5. After new installs of Qt 5.5 and XCode 7 on clean machine, Qt Creator doesn’t create a compiler entry for iOS cross-compiler, does show a Qt Version entry for iOS but with the warning “not all possible target environments can be supported due to missing compilers”, and doesn’t create a Kit entry for iOS.

Here’s what I did to get things working enough to build for iOS: I created a new Compiler entry using “/usr/bin/clang++” for compiler path and “-arch armv7” for both flags entries, and then added a Kit entry to use this compiler and the existing iOS Qt Version, setting Sysroot to “/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS..sdk”. With this setup in place, I was able to build, but did receive link warnings about targeting iOS 5.1 vs. 5.1.1, apparently at different link stages. I made these go away by opening the XCode project file and setting minimum target to 6.0.

Liang Jian: did you also have to follow these or similar steps to configure Qt Creator 3.5, or did it “just work”?

If someone believes I’ve missed something or taken an inappropriate detour in my work-around, please let me know. I’m new to making these configurations myself, and appreciate the insight of others.


From: interest-bounces+mnelson=sutron.com at qt-project.org [mailto:interest-bounces+mnelson=sutron.com at qt-project.org] On Behalf Of Liang Jian
Sent: Saturday, September 19, 2015 8:12 AM
To: Robert Iakobashvili <coroberti at gmail.com>
Cc: interest at qt-project.org
Subject: Re: [Interest] Xcode 7 beta and Qt 5.5 ?

    I use qt5.5.0-iOS with qtcreator 3.5, xcode-7.0 without any problem

On Fri, Sep 18, 2015 at 10:54 PM, Robert Iakobashvili <coroberti at gmail.com<mailto:coroberti at gmail.com>> wrote:
On Fri, Sep 18, 2015 at 5:42 PM, Robert Iakobashvili
<coroberti at gmail.com<mailto:coroberti at gmail.com>> wrote:
> On Fri, Sep 18, 2015 at 6:00 AM, Edward Sutton
> <edward.sutton at subsite.com<mailto:edward.sutton at subsite.com>> wrote:
>> For those of you developing for Qt 5.5 and iOS, you may want to hold off on
>> Xcode 7 for now.
>> Installing the released Xcode 7 on top of Xcode 6.4 + Qt 5.5 OS
>> X-Android-iOS Enterprise succeeded in building my app Android and OS X
>> targets. So far, so good.
>> However my iOS kits disappeared from Qt Creator 3.4.2 after installing Xcode
>> 7.  I did not know how to repair.  I tried uninstalling Qt 5.5 and
>> reinstalling.  The installer restored the iOS kit to Qt Creator.  However
>> builds resulted in many errors about "std::" namespace.
>> Fortunately I have an OS X build slave VM with Xcode 6.4 and Qt 5.5 that I
>> hope to use as an example to get Xcode 7 and Qt 5.5 building targets for iOS
>> again.
>> -Ed
> Hi Ed,
> Thanks for the info.
> It appears that QtCreator-3.4.2 fails to detect the arm cross-compiler
> in the tool-chain.
> When adding it manually in Preferences->Build&Run -> Compilers, it
> does not offer any arm-abi to configure.
> It could be that newer QtCreator could be helpful.
> Regards,
> Robert
Correction. After adding flags -arch armv7 to the both flag fields,
arm7 ABI appears correctly.

Just now I need to quit; I will update you on Sunday whether
manual addition of compiler in QCreator-3.4.2 rectifies the issue with Xcode-7.

Have a nice weekend.

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