[MacPorts] #27665: ccache cannot write manifest files

[MacPorts]

#27665: ccache cannot write manifest files
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 Reporter:  florian@…          |       Owner:  macports-tickets@…                   
     Type:  defect             |      Status:  new                                  
 Priority:  Normal             |   Milestone:                                       
Component:  ports              |     Version:                                       
 Keywords:                     |        Port:  ccache                               
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 ccache has lots of cache misses because it does not write manifest files
 or rather cannot rename the temporary manifest files.

 the logfile shows this:
 [2010-12-14T10:41:37.967554 79067] Error writing to manifest file
 [2010-12-14T10:41:37.967608 79067] Failed to write manifest file
 [2010-12-14T10:41:37.968484 79067] Failed to add object file hash to
 .ccache/2/9/b9e3caf6798d2be0573d80e6e74c5f-2770.manifest

 these are the files left over after this failure (empty manifest file and
 temporary manifest file):
 -rw-r----- 0 Dec 14 10:41
 .ccache/2/9/b9e3caf6798d2be0573d80e6e74c5f-2770.manifest
 -rw-r----- 9.6K Dec 14 10:41
 .ccache/2/9/b9e3caf6798d2be0573d80e6e74c5f-2770.manifest.tmp.hostname.79067

 i should note that a downloaded and self-compiled build of 3.1.3 works
 without problems. the only differences i see are a minor patch and
 omitting debugging symbols (-g). i recompiled macpors ccache without the
 patch and ommitted -g in my private build. so both versions should be the
 same. still the macports version fails which leaves me puzzled.

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Ticket URL: <https://trac.macports.org/ticket/27665>
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