[MacPorts] #69867: legacy-support headers should work with later SDK versions

[MacPorts]

#69867: legacy-support headers should work with later SDK versions
-----------------------------+-----------------------
  Reporter:  fhgwright       |      Owner:  fhgwright
      Type:  defect          |     Status:  assigned
  Priority:  Low             |  Milestone:
 Component:  ports           |    Version:  2.9.3
Resolution:                  |   Keywords:
      Port:  legacy-support  |
-----------------------------+-----------------------

Comment (by fhgwright):

 In [changeset:"f53c6a567a3acc9d4d073ac0c84e6d9c70ce6f62/macports-legacy-
 support" f53c6a567a3acc9d4d073ac0c84e6d9c70ce6f62/macports-legacy-support]
 (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-legacy-support"
 revision="f53c6a567a3acc9d4d073ac0c84e6d9c70ce6f62"
 Rework Tiger headers for better compatibility.

 Prior to this, missing and deficient Tiger headers were handled by
 installing extra headers on 10.4.  This was incompatible with builds
 using any non-Tiger SDK.  The new approach uses wrapper headers with
 appropriate SDK-based conditionals, and is compatible with all SDKs.
 Special handling of header installs on 10.4 is no longer required.

 This also avoids the need for an extra include path when building
 the legacy-support components themselves on 10.4.

 Re: https://trac.macports.org/ticket/69867

 TESTED:
 Tested on 10.4-10.5 ppc, 10.5-10.6 ppc (i386 Rosetta), 10.4-10.6 i386,
 10.5-12.x x86_64, and 11.x-14.x arm64.  Tested against all 10.4-14.x
 SDKs, using the headerinfo manual test (from a subsequent commit).
 All target/SDK combinations where the SDK supports the CPU
 architecture work correctly, including all SDKs on Intel
 architectures.  Only 10.4-10.6 SDKs support ppc, and only 11.x+ SDKs
 support arm64.
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/69867#comment:8>
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