On GNU/Linux systems, the literal string '${LIB}' in dynamic linker
paths expands to "lib", a biarch libQUAL directory such as "lib64", or
a Debian-style multiarch directory such as "lib/x86_64-linux-gnu".
If we're installing libraries to such a directory, and we have both
word-sizes' compatibility libraries available, then pw-pulse can
use LD_LIBRARY_PATH='/usr/${LIB}/pipewire-0.3/pulse' to make both
i386 and x86_64 programs load the correct version.
Signed-off-by: Simon McVittie <smcv@debian.org>
Don't use a special name for the replacement libraries but install
them into the modules directory by default. Add an option to install
them into another location.
This way, we don't need to set up symlinks in development, distros can
choose to install them where they want and/or we can use symlinks or
LD_LIBRARY path to select the replacement versions.
