[MacPorts] #46521: Remove ports: xnu-headers, libc-headers, libm-headers, and CarbonHeaders

[MacPorts]

#46521: Remove ports: xnu-headers, libc-headers, libm-headers, and CarbonHeaders
----------------------------+------------------------
  Reporter:  summers@…      |      Owner:  jeremyhu@…
      Type:  defect         |     Status:  new
  Priority:  Normal         |  Milestone:
 Component:  ports          |    Version:  2.3.3
Resolution:                 |   Keywords:
      Port:  CarbonHeaders  |
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Comment (by jeremyhu@…):

 We should be using system headers consistently, not installing our own
 (possibly conflicting) versions.  That has led to many problems.

 Regarding ld64, I'm not sure what you mean by "with hacks weighing 200KB
 in patch files" ... there is unfortunately one large patchfile (ld64-97
 -standalone-libunwind-headers.patch) for the ancient ld64-97, but the rest
 are all reasonably sized, and almost all patches that have landed in newer
 versions of ld64 (or are a reversion of a previous change in the case of
 the libstdc++ support patch).  If it makes you feel more comfortable, I'm
 happy to move the ld64-97 patches to distfiles.  The only reason that
 version exists any more is because people still use Tiger.

-- 
Ticket URL: <https://trac.macports.org/ticket/46521#comment:11>
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