Is the version of the CAPS library available on softpres.org the latest one ?
It looks like the latest Mac build there is from 2011 and is version 4.2.
With the new ARM-based Macs just released, it would be nice to at least recompile the current version for them (as I don't think native ARM-compiled emulators will be able to use an Intel-compiled library)
No rush I suppose (everything can still be run through Rosetta / Intel emulation), but just flagging this so that it doesn't take several years It would be a shame if e.g. FS-UAE got a native build soon but we couldn't use IPFs with it.
I would be happy to help with this if the source is available.
It could be as easy as adding "-arch arm64 -arch x86_64" to CFLAGS / LDFLAGS and compiling using a recent XCode.