I am a Windows/Linux developer who occasionally builds for OS X - particularly in Qt.
I have a simple Qt project that I have been developing on Windows. I now wish to build it on OS X.
I am running Yosemite. I have installed Xcode 7 and am attempting to install Qt 5.5.
When I run the Qt installer, immediately after the prompt to log in to Qt (which is successful), I receive the following error:
You need to install Xcode version 5.0.0.
I have attempted to locate Xcode 5.0.0 on the Apple Developer site, but this is 2 major versions behind the most recent version, and I cannot even find an installer for it.
More to the point, I do wonder why the most recent version of Qt requires a version of Xcode that is considered so old by Apple that it's not even available.
How do I overcome this problem so that I can get Qt installed on OS X?
I ran into the same problem and solved it by following the instructions here. This link describes a similar, but slightly different installer issue.
To summarize, you need to ensure that the Xcode command line tools are installed and set up correctly. I already had them installed, but had to go into Preferences -> Locations in Xcode and set the dropdown to the currently installed version.
The link shows an earlier version of Xcode where the path is actually Preferences -> Downloads -> Components.
Once I'd made this change, the installer continued successfully.
The solution that worked for me (on OSX Sierra XCode 8.2.1) is to open XCode Preferences -> Locations.
There is a drop-down menu named Command Line Tools. Select the available XCode version here. Then restart the Qt Creator installation.
taken from the link above, this resolved my issue:
sudo /usr/bin/xcode-select -switch /Applications/Xcode.app/Contents/Developer
For me closing the prompt and smashing keys (alt F4, I know that its not windows) before the next prompt opened worked... qt is running fine now, as it doesn't need the old version.
you can find the old version of XCode on the the Apple offical site here and download .dmg of xcode 5 or 6.1 for example :
I do this and it's ok for me.
来源：https://stackoverflow.com/questions/31554125/attempt-to-install-qt-on-os-x-gives-you-need-to-install-xcode-5-0-0-but-this