Chicken/egg problem with pkg

[Konstantin Belousov]

On Fri, Mar 10, 2017 at 02:55:13PM +0100, Jan Bramkamp wrote:
> Among other 
> things FreeBSD 10.3 added a bunch of new *at() system calls like openat. 
> These *at() system calls are useful inside (capsicum) sandboxes. Your 
> old 10.1 kernel lacks those systems calls and your old 10.1 libc lacks 
> the stubs to call them anyways. It is this missing stub that causes the 
> new libpkg.so to fail to link.

Although (removed) rest of your mail is mostly accurate, the cited part
is explicitely false. The openat(2) syscall and friends exist even in
FreeBSD 8.x.  What has changed in 10.2->10.3 is that the version for
openat symbol in libc has to be bumped due to some issue with libthr. As
result, newer binaries require a symbol version which does not exist in
older libc.