16:43 <matteobin> How does FFmpeg configure autodetect a library? How can I tell it to load a shared library from elsewhere?

16:44 <JEEB> it looks up the development headers and stuff usually, which most often is done through pkg-config (which nowadays tends to be a symbolic link towards pkgconf), which follows PKG_CONFIG_LIBDIR and PKG_CONFIG_PATH

16:45 <JEEB> (_PATH actually appends and doesn't override, which is different from just setting PATH=xyz)

16:46 <JEEB> usually if you're dealing with shared libraries unless you have rpath the standard dynamic library loading logic of whatever operating system is followed

16:46 <matteobin> Thank you. :)

16:46 <JEEB> so if the issue is not build time but just runtime, then you need to fix the runtime loading paths

16:47 <JEEB> if it's a problem at build time, then you stare at ffbuild/config.log in your build directory and attempt to figure out what it actually tried to poke instead of what you wanted it to poke

16:47 <JEEB> (I had some fun recently with some february 2024 vulkan headers in my custom sysroot due to needing newer headers then than packaged)

16:48 <JEEB> and the configure check would actually catch the system ones and thus pass or something like that :P

16:48 <JEEB> -> build-time header look up would catch the other one

16:53 <matteobin> Thank you for the help. :)