[MacPorts] #27747: readline-5: let to install libreadline.dylib (allow linking from GPLv2 programs)

[MacPorts]

#27747: readline-5: let to install libreadline.dylib (allow linking from GPLv2
programs)
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 Reporter:  kimuraw@…             |       Owner:  macports-tickets@…                   
     Type:  enhancement           |      Status:  new                                  
 Priority:  Normal                |   Milestone:                                       
Component:  ports                 |     Version:  1.9.2                                
 Keywords:                        |        Port:  readline-5                           
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 The current version of port:readline-5 installs only header files. I hope
 port:readline-5 to provide .dylib files.

 The license of readline was changed to GPLv3+ from GPLv2+ at version 6.
 Programs licensed under GPLv2, such as "ruby", cannot link readline-6.x.

 I make a patch to provide .dylib files. The patched port installs
   - header files: ${prefix}/include/readline5
   - library files: ${prefix}/lib/readline5

 I've checked no ports depends on port:readline-5. So I think this change
 do not have problems.

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Ticket URL: <https://trac.macports.org/ticket/27747>
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