Use DESTDIR

[hifiberry]

install-exec-hook does not use DESTDIR which breaks installation in build environments that install in a separate directory (e.g. all cross-compiling environments)

[mikebrady]

Many thanks for this. I might make a further change to is, a la Shairport Sync, to comply with this, but this is great. (Also, I'm a fan of HiFiBerry stuff.)

[hifiberry]

A "nicer" installation of the nqptp header files would also be good. The current implementation that looks for it in ../pqptp also doesn't work well in all environments, but for now I found some hack around this ;-)

[hifiberry]

BTW: We're big fans of shairport-sync here :-) Hope to get this working for a test here soon...

[mikebrady]

A "nicer" installation of the nqptp header files would also be good. The current implementation that looks for it in ../pqptp also doesn't work well in all environments, but for now I found some hack around this ;-)

Yeah, that was done simply for [my] convenience. I'll fix it.

[mikebrady]

@hifiberry, I [believe I have] fixed that problem you referred to above. Also, I added a ./configure flag for issue #6. Overkill for you, certainly, but just FYI.