C++11 and INCLUDE error in iOS

[freddy311082]

Hi guys

I'm trying tu make an app for iPad 2 with iOS 7.0. In my .pro file I have:

@
CONFIG += C++11
INCLUDE += ./euler
@

where euler is a directory from my API, for example...

Where, when I comment this 2 lines in the .pro, my app work fine in the iOS emulator and into my iPad, but if I don't comment this 2 lines, QtCreator give me the following error:

@
The following build commands failed:

Ld Debug-iphonesimulator/PilarAppBeta.app/PilarAppBeta normal i386

(1 failure)

make[1]: *** [iphonesimulator-debug] Error 65

make: *** [debug-iphonesimulator] Error 2

Undefined symbols for architecture i386:

"std::ios_base::Init::Init()", referenced from:

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qqmlbundle.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4regexpobject.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4mm.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4functionobject.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4object.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4debugging.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4codegen.o)

...

"std::ios_base::Init::~Init()", referenced from:

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qqmlbundle.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4regexpobject.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4mm.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4functionobject.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4object.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4debugging.o)

___cxx_global_var_init in libQt5Qml_iphonesimulator_debug.a(qv4codegen.o)

"std::__throw_length_error(char const*)", referenced from:

std::vector<OwnPtrJSC::Yarr::CharacterClass, std::allocator<OwnPtrJSC::Yarr::CharacterClass > >::_M_insert_aux(__gnu_cxx::__normal_iterator<OwnPtrJSC::Yarr::CharacterClass*, std::vector<OwnPtrJSC::Yarr::CharacterClass, std::allocator<OwnPtrJSC::Yarr::CharacterClass > > >, OwnPtrJSC::Yarr::CharacterClass const&) in libQt5Qml_iphonesimulator_debug.a(YarrPattern.o)

std::vector<unsigned short, std::allocator<unsigned short> >::_M_insert_aux(__gnu_cxx::__normal_iterator<unsigned short*, std::vector<unsigned short, std::allocator<unsigned short> > >, unsigned short const&) in libQt5Qml_iphonesimulator_debug.a(YarrPattern.o)

std::vector<JSC::Yarr::PatternTerm, std::allocatorJSC::Yarr::PatternTerm >::_M_insert_aux(__gnu_cxx::__normal_iterator<JSC::Yarr::PatternTerm*, std::vector<JSC::Yarr::PatternTerm, std::allocatorJSC::Yarr::PatternTerm > >, JSC::Yarr::PatternTerm const&) in libQt5Qml_iphonesimulator_debug.a(YarrPattern.o)

std::vector<OwnPtrJSC::Yarr::PatternDisjunction, std::allocator<OwnPtrJSC::Yarr::PatternDisjunction > >::_M_insert_aux(__gnu_cxx::__normal_iterator<OwnPtrJSC::Yarr::PatternDisjunction*, std::vector<OwnPtrJSC::Yarr::PatternDisjunction, std::allocator<OwnPtrJSC::Yarr::PatternDisjunction > > >, OwnPtrJSC::Yarr::PatternDisjunction const&) in libQt5Qml_iphonesimulator_debug.a(YarrPattern.o)

std::vector<JSC::Yarr::PatternTerm, std::allocatorJSC::Yarr::PatternTerm >::reserve(unsigned long) in libQt5Qml_iphonesimulator_debug.a(YarrPattern.o)

std::vector<OwnPtrJSC::Yarr::PatternAlternative, std::allocator<OwnPtrJSC::Yarr::PatternAlternative > >::_M_insert_aux(__gnu_cxx::__normal_iterator<OwnPtrJSC::Yarr::PatternAlternative*, std::vector<OwnPtrJSC::Yarr::PatternAlternative, std::allocator<OwnPtrJSC::Yarr::PatternAlternative > > >, OwnPtrJSC::Yarr::PatternAlternative const&) in libQt5Qml_iphonesimulator_debug.a(YarrPattern.o)

std::vector<JSC::Yarr::CharacterRange, std::allocatorJSC::Yarr::CharacterRange >::_M_insert_aux(__gnu_cxx::__normal_iterator<JSC::Yarr::CharacterRange*, std::vector<JSC::Yarr::CharacterRange, std::allocatorJSC::Yarr::CharacterRange > >, JSC::Yarr::CharacterRange const&) in libQt5Qml_iphonesimulator_debug.a(YarrPattern.o)

...

ld: symbol(s) not found for architecture i386

clang: error: linker command failed with exit code 1 (use -v to see invocation)

17:00:09: The process "/usr/bin/make" exited with code 2.

Error while building/deploying project PilarAppBeta (kit: iphonesimulator-clang Qt 5.2.1 for iOS)

When executing step 'Make'

17:00:09: Elapsed time: 00:04.
@

so, my quetion is... how can I make my iOS app compatible with C++11 ??? What Am I doing wrong ??

best regard

freddy

[hskoglund]

I haven't tried an iOS app yet, but I know when you build a C++11 OSX app, you need a small 'c' on the config line, not a capital C, like this
@CONFIG += c++11@

Maybe it's the same problem for iOS apps?
(also see "my blog post":http://www.tripleboot.org/?p=101 about this)

[freddy311082]

Hi hskoglund... thanks for answer...

and yes bro, you are right, i have:

@
INCLUDEPATH += ./euler
CONFIG += c++11
@

the above example I hade made a mistake typing. sorry for that...

When I compile my app for desktop all is fine, but when I try to compile for iOS device, i get the error number 65...

any other advices ??

thanks

[SGaist]

Hi,

IIRC, c++11 is not enabled by default on iOS, you would need to build Qt yourself to use it

[freddy311082]

Ty SGaist... for your aclaration !!!

regards

[hskoglund]

SGaist, might be off topic, but you mean c++11 is not enabled for Qt-flavored iOS apps?
Because I can use C++11 things like ranged for loops in my "vanilla" iOS (i.e. built with Xcode) apps without problems...

[SGaist]

I mean that Qt for iOS looks like not configured to use c++11 (i don't know however if it's intentional or not)

[hskoglund]

Ok maybe something for Qt 5.3's wishlist? Anyway, c++11 support is pretty new in Xcode (since Xcode 5.0 I think).

[SGaist]

At least worth to ask on the interest mailing list

[SGaist]

If I saw things correctly, the c++11 switch is now enabled (so it should be in for Qt 5.3)

If I understood things correctly it was due to the minimum iOS version supported which will now be iOS 5.0

[hskoglund]

Neat, I should download 5.3 and give it a try.

(It's easy to get tired of those longwinded method names in Objective-C, if Qt can give me 100% C++11 in iOS, that could save my fingers a bit of typing pain :-)