[MacPorts] #61247: transmission build fails with libtool command

[MacPorts]

#61247: transmission build fails with libtool command
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 Reporter:  burdges  |      Owner:  (none)
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:
 Keywords:           |       Port:
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 "port upgrade transmission" fails with

 > Libtool
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_net_transmission/transmission/work/transmission-3.00/build/Release/libdht.a
 normal x86_64

 And the actual Libtool error is:

 error: Libtool: no output file specified (specify with -o output)

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Ticket URL: <https://trac.macports.org/ticket/61247>
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