Make it easier for users on non-Debian-derived distros to set SDL_DYNAMIC_API
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tests: Expand coverage of _srt_steam_get_compat_flags()
Add coverage for STEAM_COMPAT_TRACING.
steam: Generalize taking compat flags from boolean environment variables
Instead of open-coding this for just STEAM_COMPAT_TRACING, let's have a table so we can easily add more.
pv-adverb: Set SDL_DYNAMIC_API to a suitable value on request
It's difficult for users of non-Debian-derived distros to select the runtime's
SDL, especially if they don't know whether the game is 32- or 64-bit,
because the expansion of $LIB
and $PLATFORM
varies between distro
glibc builds.
However, we can normally predict $LIB
and $PLATFORM
well enough to
do the right thing programmatically. For example, if $PLATFORM
expands
to i686
in 32-bit processes and xeon-phi
in 64-bit, then we can
create symlinks at /tmp/XX/i686/libSDL2-2.0.so.0
and
/tmp/XX/xeon-phi/libSDL2-2.0.so.0
, and then set
SDL_DYNAMIC_API='/tmp/XX/${PLATFORM}/libSDL2-2.0.so.0'
to have the
runtime linker dynamically select the correct word size.
While I'm here, we might as well provide the same setup for SDL3.
steamrt/tasks#578
tests: Exercise SDL_DYNAMIC_API setup
steamrt/tasks#578