[MacPorts] #64836: ghc build error on arm: 'ffitarget_arm64.h' file not found

[MacPorts]

#64836: ghc build error on arm: 'ffitarget_arm64.h' file not found
-----------------------+--------------------
 Reporter:  essandess  |      Owner:  (none)
     Type:  defect     |     Status:  new
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:
 Keywords:             |       Port:  ghc
-----------------------+--------------------
 `sudo port install ghc`
 {{{
 :info:build
 /opt/local/var/macports/build/_opt_local_ports_lang_ghc/ghc/work/bootstrap/lib/ghc-9.2.1/lib/../lib/aarch64
 -osx-ghc-9.2.1/rts-1.0.2/include/ffitarget.h:6:10: error:
 :info:build      fatal error: 'ffitarget_arm64.h' file not found
 :info:build   |
 :info:build 6 | #include "ffitarget_arm64.h"
 :info:build   |          ^
 :info:build #include "ffitarget_arm64.h"
 :info:build          ^~~~~~~~~~~~~~~~~~~
 :info:build 1 error generated.
 :info:build `clang' failed in phase `C Compiler'. (Exit code: 1)
 }}}

 The file `ffitarget_arm64.h` exists in both Xcode and CLT:

 {{{
 $ locate ffitarget_arm64.h
 /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/ffi/ffitarget_arm64.h
 /Library/Developer/CommandLineTools/SDKs/MacOSX11.1.sdk/usr/include/ffi/ffitarget_arm64.h
 /Library/Developer/CommandLineTools/SDKs/MacOSX11.3.sdk/usr/include/ffi/ffitarget_arm64.h
 /Library/Developer/CommandLineTools/SDKs/MacOSX12.1.sdk/usr/include/ffi/ffitarget_arm64.h
 }}}

 Does anyone know how to tell MacPorts to find this file on arm? (Log
 attached.)

-- 
Ticket URL: <https://trac.macports.org/ticket/64836>
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