[MacPorts] #52754: libsdl2 @2.0.5: missing x11 library dependencies cause opportunistic linking and varying amounts of functionality for +x11 variant.

[MacPorts]

#52754: libsdl2 @2.0.5: missing x11 library dependencies cause opportunistic
linking and varying amounts of functionality for +x11 variant.
----------------------+----------------------
 Reporter:  dbevans   |      Owner:  jmroot
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:  haspatch  |       Port:  liibsdl2
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 When building with the +x11 variant, libsdl2 has a list of X11 libraries
 that it will look for a configure time and enable or disable functionality
 depending on the results.  This results in opportunistic link with
 libraries that are not listed as dependencies in the port, and variable
 functionality based on what is, or is not present.

 From a review of configure.in here is the list of ports that should be
 added in addition to the current ones as dependencies for the +x11
 variant:

  * xorg-libX11 (previously implied, now explicit)
  * xorg-libXcursor
  * xorg-libXi
  * xorg-libXinerama
  * xorg-libXScrnSaver
  * xorg-libXxf86vm

 Patch attached with rev bump to ensure all have the same set of
 functionality.

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Ticket URL: <https://trac.macports.org/ticket/52754>
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