external library linking problem in release compilation

[abshaev]

Hello everyone!

I have an issue with project release. Qt shows an error that external HDF5 librairy cannot be accessed, however debugging goes well and I get no error message.
What maybe the difference for external libraries linking between release and debug modes?

[d_stranz]

What platform? Windows? Linux? Other?

What development environment and toolchain? Qt Creator, CMake, Visual Studio?

On Windows with Visual Studio, all external libraries must be of the same "bitness" (32 or 64) and for C++ must all be either compiled in Debug mode (for a debug executable) or Release mode (for a release executable). This is because the name mangling done by the compiler to decorate class, method, and variable names is different between debug and release builds. I also think that all external libraries must be built with the same compiler; you cannot mix MSVC and gcc builds, for example.