[MacPorts] #47613: erlang at 17.5 installs C headers in weird places during user install

[MacPorts]

#47613: erlang at 17.5 installs C headers in weird places during user install
---------------------+--------------------------------
 Reporter:  mtb19@…  |      Owner:  macports-tickets@…
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.3.3
 Keywords:           |       Port:  erlang
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 I maintain a user (non-root) installation in ~/.site. Erlang installs its
 headers in weird places:

 {{{
 % find ~/.site -name erl_driver.h
 /Users/xyz/.site/lib/erlang/erts-6.4/include/erl_driver.h
 /Users/xyz/.site/lib/erlang/usr/include/erl_driver.h
 }}}

 This causes failures when installing things that depend on the existence
 of these headers (e.g., couchdb; see #47612).

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Ticket URL: <https://trac.macports.org/ticket/47613>
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