Bug#797800: lvm2 configure.in, librt.so vs librt.pc

[Andreas Henriksson]

Hello Alasdair G Kergon.

I'm mailing you because of an issue I've run into which I think comes
from your commit:
https://git.fedorahosted.org/cgit/lvm2.git/commit/?id=3cd644aeb5cac432a92ad50584973a3430168ed6

On Debian there's librt.so but no librt.pc.

Could you please add a PKG_CHECK_MODULES call in configure.in
to check if RT_PC should be set to "librt" or ""?

(Fwiw, I've file http://bugs.debian.org/797800 to track this and
another small issue on the Debian side.)

Regards,
Andreas Henriksson