# SDL_HINT_LOG_BACKENDS

A variable controlling whether SDL backend information is logged.

## Header File

Defined in [<SDL3/SDL_hints.h>](https://github.com/libsdl-org/SDL/blob/main/include/SDL3/SDL_hints.h)

## Syntax

```c
#define SDL_HINT_LOG_BACKENDS "SDL_LOG_BACKENDS"
```

## Remarks

The variable can be set to the following values:

- "0": Subsystem information will not be logged. (default)
- "1": Subsystem information will be logged.

This is generally meant to be used as an environment variable to let
end-users report what subsystems were chosen on their system, to aid in
debugging. Logged information is sent through [SDL_Log](SDL_Log)(), which
means by default they appear on stdout on most platforms or maybe
OutputDebugString() on Windows, and can be funneled by the app with
[SDL_SetLogOutputFunction](SDL_SetLogOutputFunction)(), etc.

This hint can be set anytime, but the specific logs are generated during
subsystem init.

## Version

This hint is available since SDL 3.4.0.

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[CategoryAPI](CategoryAPI), [CategoryAPIMacro](CategoryAPIMacro), [CategoryHints](CategoryHints)