Hugin contains a bundled zthread-2.3.1

[Bruno Postle]

src/foreign/zthread is a bundled version of zthread <http://zthread.sourceforge.net/> This is a problem with some Linux distributions such as Debian and fedora that have policies to not ship multiple versions of the same library.

The solution would be to modify the cmake configuration to allow building against a system version of this library, and/or to remove the bundled library altogether.

[Andreas Metzler (k-launchpad-downhill-at-eu-org)]

Please note that zthreads is not yet packaged for Debian. http://bugs.debian.org/579373

[Andreas Metzler (k-launchpad-downhill-at-eu-org)]

Find attached a patch that changes hugin to use an external zthread if available and fall back to the included copy otherwise. The code does not do any version testing.

I think this should be a a sufficient solution for this issue. Afaiu the big problem is not that hugin source contains a copy of the zthread library, but that it cannot be built against an external version of the library. OTOH removing exotic libraries like zthread from src/foreign can make packaging harder.

[tmodes (tmodes)]

Thanks Andreas, pushed to repository.