[MacPorts] #42101: upgrading qpdf attempts to link with old library

[MacPorts]

#42101: upgrading qpdf attempts to link with old library
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 Reporter:  gnwiii@…     |      Owner:  macports-tickets@…
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.2.1
 Keywords:               |       Port:  qpdf
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 Upgrading from 3.0.2_0 to 5.1.0_0 on Snow Leopard failed at undefined
 symbols like {{{Pl_AES_PDF::disablePadding}}}.  Deactivating the old
 version and installing 5.0.1_0 works.  There were similar reports for
 previous versions so if it isn't a simple change to force qpdf to kink
 against the new library it might be helpful to issue a warning to remove
 the older version before installing.

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Ticket URL: <https://trac.macports.org/ticket/42101>
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