[MacPorts] #45792: subversion @1.8.10_0: fix lookup of undefined symbols on Yosemite

[MacPorts]

#45792: subversion @1.8.10_0: fix lookup of undefined symbols on Yosemite
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 Reporter:  larryv@…  |      Owner:  dluke@…
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:  2.3.2
 Keywords:  yosemite  |       Port:  subversion
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 A user on the IRC channel is experiencing segmentation faults while using
 our Subversion on Yosemite. The [[attachment:svn_segfault.txt|crash log]]
 points to the [[ticket:44596|Libtool MACOSX_DEPLOYMENT_TARGET bug]], which
 causes linker invocations to use “-flat_namespace -undefined suppress”
 instead of “-undefined dynamic_lookup” when `MACOSX_DEPLOYMENT_TARGET` is
 set to “10.10”. The attached patch fixes this.

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Ticket URL: <https://trac.macports.org/ticket/45792>
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