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Simon McVittie's avatar
Simon McVittie authored
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

Signed-off-by: default avatarSimon McVittie <smcv@collabora.com>
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