error in build first simple qwidget app (qt 5.7 , OSX Mountain lion)

polto molto

system :

OSX Mountain lion 10.8.5
QT 5.6 or 5.7 : the same error

compiler:

clang++ -v
Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin12.5.0
Thread model: posix

error:

/Users/ahbanna/Qt/5.7/clang_64/lib/QtCore.framework/Headers/qatomic.h:162:5: error: constexpr constructor never produces a constant expression [-Winvalid-constexpr]
QAtomicInt(int value = 0) Q_DECL_NOTHROW : QAtomicInteger<int>(value) {}
^
/Users/ahbanna/Qt/5.7/clang_64/lib/QtCore.framework/Headers/qatomic.h:162:48: note: non-literal type 'QAtomicInteger<int>' cannot be used in a constant expression
QAtomicInt(int value = 0) Q_DECL_NOTHROW : QAtomicInteger<int>(value) {}

SGaist

Hi and welcome to devnet,

Are you using a default project from Qt Creator ?

polto molto

yes
start new project from file menu
and select empty widget
then try run it
I use qt from about 5 years ago

SGaist

Something's not clear here, which exact version of Qt are you using ? And Qt Creator ?

matt58

Adding the following line to the .pro file worked for me:
CONFIG -= c++11

Regards, Matt

hugoduar

I've got the same error on Mountain Lion.

Using:

Qt Creator 4.1.0
Based on Qt 5.7.0 (Clang 7.0 (Apple), 64 bit)

Emilio_AC

Hello,

Did you find the solution to that problem? I am new in this and I have the same error.

SGaist