[MacPorts] #45684: Builds hang post upgrading to Yosemite

[MacPorts]

#45684: Builds hang post upgrading to Yosemite
---------------------+--------------------------------
  Reporter:  j@…     |      Owner:  macports-tickets@…
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  base    |    Version:  2.3.2
Resolution:          |   Keywords:
      Port:          |
---------------------+--------------------------------

Comment (by cal@…):

 OK, so this seems to support my guess that there's something wrong with
 Apple's software and MacPorts actually isn't to blame here. Your sample
 shows that make is hanging in a read operation in the xcode selection code
 that arbitrates which binary actually gets executed by `/usr/bin/make`.

 Looking at the fourth dtruss file, we can see libxcrun.dylib being loaded
 and doing its job until a successful
 {{{
 rename("/private/var/root/Library/Preferences/com.apple.xpc.activity2.plist.EMcHeGY\0",
 "/private/var/root/Library/Preferences/com.apple.xpc.activity2.plist\0")
 }}}
 After that, we only see mutexes and other synchronization stuff doing
 nothing and an occasional read that I assume is spotlight or similar
 system service socket interaction.

 We also see a couple of `__mac_syscall` calls that all fail with Err!#45,
 which seems to be "Operation not supported" according to `bsd/sys/errno.h`
 from the kernel sources. A quick grep in the security subdirectory of the
 kernel sources make me think this happened because the filesystem was not
 mounted with `MULTILABEL` support, whatever that is, since the docs are
 very short on this. It also isn't clear if this failed syscall is actually
 an issue here.

 In conclusion, that leaves us with the suggestion to file a radar with
 Apple and hope it won't be ignored.

-- 
Ticket URL: <https://trac.macports.org/ticket/45684#comment:11>
MacPorts <https://www.macports.org/>
Ports system for OS X