[MacPorts] #31635: xattr fails to build with latest version of xcode due to depricated -buildstyle switch

[MacPorts]

#31635: xattr fails to build with latest version of xcode due to depricated
-buildstyle switch
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 Reporter:  pkutzner+macports@…          |       Owner:  macports-tickets@…                   
     Type:  defect                       |      Status:  new                                  
 Priority:  Normal                       |   Milestone:                                       
Component:  ports                        |     Version:  2.0.3                                
 Keywords:                               |        Port:  xattr                                
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Comment(by macports@…):

 I confirmed this issue while trying to build xattr today. The reason why I
 wanted to try the MacPorts version of xattr is that it appears the Apple
 version is hiding information from the user. The ArsTechnica review of
 Snow Leopard mentioned that they could see the ACLs for a file on an HFS+
 volume (stored as extended attributes) using the Leopard version of xattr,
 which were not showing when using the Snow Leopard version of xattr. In
 addition, Amit Singh documents on his site for fileXray (a tool for
 reading HFS+ metadata) that his tool can "display all extended attributes,
 including ones that are "special" (normally hidden or actively filtered by
 the kernel, such as Access Control Lists)". That's great but it's an $80
 program, and can only perform read-only access because it is for forensic
 examiners.

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Ticket URL: <https://trac.macports.org/ticket/31635#comment:4>
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