[MacPorts] #61672: wxWidgets-3.2: error: implicitly declaring library function 'exit' (was: wxWidgets-3.2 fails to configure on Big Sur)

[MacPorts]

#61672: wxWidgets-3.2: error: implicitly declaring library function 'exit'
----------------------------+-----------------------------
  Reporter:  alex1platon    |      Owner:  mojca
      Type:  defect         |     Status:  assigned
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.6.4
Resolution:                 |   Keywords:  bigsur catalina
      Port:  wxWidgets-3.2  |
----------------------------+-----------------------------
Changes (by ryandesign):

 * status:  new => assigned
 * owner:  (none) => mojca
 * keywords:  wxWidgets big sur big_sur => bigsur catalina


Comment:

 The well-known Xcode 12 problem:
 {{{
 conftest.c:56:33: error: implicitly declaring library function 'exit' with
 type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-function-
 declaration]
 }}}

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Ticket URL: <https://trac.macports.org/ticket/61672#comment:1>
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