[MacPorts] #61278: convertlit build fails with Xcode12: error: implicit declaration of function 'LZXinit' is invalid in C99

[MacPorts]

#61278: convertlit build fails with Xcode12: error: implicit declaration of
function 'LZXinit' is invalid in C99
-------------------------+--------------------
  Reporter:  rlhamil     |      Owner:  (none)
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.6.3
Resolution:              |   Keywords:
      Port:  convertlit  |
-------------------------+--------------------

Comment (by rlhamil):

 also
 {{{
 :info:build newlzx/lzxglue.c:61:5: error: implicitly declaring library
 function 'memcpy' with type 'void *(void *, const void *, unsigned long)'
 [-Werror,-Wimplicit-function-declaration]
 }}}

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Ticket URL: <https://trac.macports.org/ticket/61278#comment:2>
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