<![CDATA["InterlockedCompareExchange@12" not be found in DLL "libstdc++6.dll"]]>Hey,
I use Qt5.1.0 with mingw48_32 on Windows 7 64bit. For some reason I had to add another compiler version. I downloaded Mingw 32 bit with gcc 4.7.2 and added it as custom compiler to Qt Creator.
I configured it as follows:

name: MinGW4.7

path to compiler: C:\MinGW\bin\g++.exe

path to make: C:\MinGW\bin\mingw32-make.exe

ABI: x86-windows-msys-pe-32bit

header path: C:\MinGW\include

Then I created a custom Kit which makes use of the custom compiler.

When I compile my project with this kit, and later click on the generated .exe file, I receive an error similar to this (translated from German):

"InterlockedCompareExchange@12" could not be found in DLL "libstdc++6.dll"

What might this be? And how can I solve it? Did I add the custom compiler wrongly?

]]>https://forum.qt.io/topic/36353/interlockedcompareexchange-12-not-be-found-in-dll-libstdc-6-dllRSS for NodeFri, 10 Apr 2026 18:17:22 GMTWed, 08 Jan 2014 16:38:22 GMT60<![CDATA[Reply to "InterlockedCompareExchange@12" not be found in DLL "libstdc++6.dll" on Thu, 09 Jan 2014 09:43:27 GMT]]>AFAIK, no, you'll need to rebuild Qt

]]>https://forum.qt.io/post/210053https://forum.qt.io/post/210053Thu, 09 Jan 2014 09:43:27 GMT<![CDATA[Reply to "InterlockedCompareExchange@12" not be found in DLL "libstdc++6.dll" on Thu, 09 Jan 2014 09:14:36 GMT]]>Yes, that was my guess, too. So is there a way to have Qt with MinGW 4.7 other than recompile Qt?

For now I simply replaced the incompatible 4.7-.dlls with the 4.8 counterparts, namely libgomp-1.dll and libstdc++6.dll. I hope, no further problems occur...

Thanks for the response!

]]>https://forum.qt.io/post/210045https://forum.qt.io/post/210045Thu, 09 Jan 2014 09:14:36 GMT<![CDATA[Reply to "InterlockedCompareExchange@12" not be found in DLL "libstdc++6.dll" on Wed, 08 Jan 2014 20:30:36 GMT]]>Hi,

AFAIK, you can't mix libraries built with MinGW 4.7 and MinGW 4.8

]]>https://forum.qt.io/post/209958https://forum.qt.io/post/209958Wed, 08 Jan 2014 20:30:36 GMT<![CDATA[Reply to "InterlockedCompareExchange@12" not be found in DLL "libstdc++6.dll" on Wed, 08 Jan 2014 16:39:35 GMT]]>I should add, that the compiler works without problems for other projects that are not Qt related.

]]>https://forum.qt.io/post/209929https://forum.qt.io/post/209929Wed, 08 Jan 2014 16:39:35 GMT