Faild to load from dynamic library on Linux. about derelictsdl2 HOT 2 CLOSED

It appears that none of the functions are dynamically linking correctly. I commented out the bindFunc for SDL_DequeueAudio and it failed on another, and when I commented out that line it failed on another...

from derelictsdl2.

Your system has a version of SDL older than the one DerelictSDL2 3.0.0-beta tries to load by default. The documentation tells you that 3.0.0 beta supports up to SDL 2.0.5. That's what it tries to load by default.

The SDL changelog, or, more simply, the DerelictSDL2 loader source, will tell you that SDL_Dequeue audio was added in 2.0.5. Specifically, you can see in the source that all of the functions you were missing are part of SDL 2.0.5. I know that because if SDL_Dequeue audio was the first function to fail, that means SDL 2.0.0 - 2.0.4 loaded successfully -- so you have SDL 2.0.4 installed.

The solution is to only load the version of SDL you actually need. If, for example, you don't need any SDL functions from any version higher than 2.0.0, then you can do this:

import derelict.util.loader : ShaderLibVersion;
DerelictSDL2.load(SharedLibVersion(2, 0, 0));

In my case, I like to use the filesystem API (SDL_GetPrefPath & SDL_GetBasePath) which was added in 2.0.1, but which was buggy on Windows until SDL 2.0.2:

version(Windows) DerelictSDL2.load(SharedLibVersion(2, 0, 2));
else DerelictSDL2.load(SharedLibVersion(2, 0, 1));

from derelictsdl2.