[MacPorts] #57294: libkdegames @4.14.3: 'al.h' file not found

[MacPorts]

#57294: libkdegames @4.14.3: 'al.h' file not found
--------------------------+-------------------------
  Reporter:  rlhamil      |      Owner:  NicosPavlov
      Type:  defect       |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.5.4
Resolution:               |   Keywords:  mojave
      Port:  libkdegames  |
--------------------------+-------------------------

Comment (by kencu):

 something is setting
 {{{
 -DOPENAL_INCLUDE_DIR=/System/Library/Frameworks/OpenAL.framework/Headers
 -DOPENAL_LIBRARY=/System/Library/Frameworks/OpenAL.framework
 }}}
 instead of using the proper sdkroot

 On 10.14 and up, there is no sdk at "/".

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Ticket URL: <https://trac.macports.org/ticket/57294#comment:14>
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