[MacPorts] #61464: php: modules fail to build with undefined symbols

[MacPorts]

#61464: php: modules fail to build with undefined symbols
---------------------------+------------------------
  Reporter:  andy-yx-chen  |      Owner:  ryandesign
      Type:  defect        |     Status:  accepted
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.6.4
Resolution:                |   Keywords:  bigsur
      Port:  php           |
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Comment (by ryandesign):

 This ticket was about the problem that php's libtool.m4 has the macOS 11
 deployment target bug. It was fixed by forcing the use of the 10.16
 deployment target.

 The additional issues that are now being reported here are separate
 problems that each need separate solutions and should be filed in separate
 tickets so that they can be investigated and tracked individually.

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Ticket URL: <https://trac.macports.org/ticket/61464#comment:31>
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