[MacPorts] #73535: ghc @9.14.1_1 (+prebuilt) has issues on MacOS 15.7.1 when building cabal

[MacPorts]

#73535: ghc @9.14.1_1 (+prebuilt) has issues on MacOS 15.7.1 when building cabal
-----------------------------------+----------------------
  Reporter:  Gandoon               |      Owner:  pmetzger
      Type:  defect                |     Status:  closed
  Priority:  Normal                |  Milestone:
 Component:  ports                 |    Version:  2.12.1
Resolution:  fixed                 |   Keywords:
      Port:  ghc, cabal, libiconv  |
-----------------------------------+----------------------
Changes (by pmetzger):

 * owner:  (none) => pmetzger
 * status:  new => closed
 * resolution:   => fixed


Comment:

 In [changeset:"7704d783cdeb79174e270b0712d94a64f64c8d0d/macports-ports"
 7704d783cdeb79174e270b0712d94a64f64c8d0d/macports-ports] (master):
 {{{
 #!ConfigurableCommitTicketReference repository="macports-ports"
 revision="7704d783cdeb79174e270b0712d94a64f64c8d0d"
 ghc: fix prebuilt libiconv linkage on Darwin

 The upstream Darwin bindist is built against the SDK iconv, whose
 entry points are named iconv*. MacPorts builds can put ${prefix}/lib
 ahead of the SDK library path, causing downstream GHC links to
 resolve against MacPorts libiconv, which exports libiconv* instead.
 This broke builds of Haskell ports such as cabal with undefined
 _iconv, _iconv_open, and _iconv_close symbols from ghc-internal.

 When installing the prebuilt GHC, rewrite ghc-internal's iconv
 object in the static archives and the ghc-internal dylibs to
 reference libiconv* symbols. Also rewrite the dylib load command to
 use ${prefix}/lib/libiconv.2.dylib, add ${prefix}/lib to
 ghc-internal's package metadata library search paths, and recache the
 package database.

 This makes ghc +prebuilt internally consistent with its MacPorts
 libiconv dependency and allows cabal to build successfully with
 ghc @9.14.1_2+prebuilt.

 Closes: https://trac.macports.org/ticket/73535
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/73535#comment:2>
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