[MacPorts] #13938: netpbm should maybe install symlinks for libpbm libpgm libpnm and libppm

[MacPorts]

#13938: netpbm should maybe install symlinks for libpbm libpgm libpnm and libppm
-------------------------------------+--------------------------------------
 Reporter:  ryandesign at macports.org  |       Owner:  mas at macports.org 
     Type:  defect                   |      Status:  new              
 Priority:  Normal                   |   Milestone:  Port Enhancements
Component:  ports                    |     Version:  1.6.0            
 Keywords:                           |  
-------------------------------------+--------------------------------------
 netpbm installs libnetpbm.dylib but it looks like this functionality used
 to be spread out among four libraries: libpbm libpgm libpnm and libppm.
 Some old software still references the netpbm libraries by those old
 library names. See for example [http://linuxfromscratch.org/pipermail
 /blfs-support/2007-August/063409.html this message]. When adding the new
 [browser:trunk/dports/print/ppmtomd/ ppmtomd port] I had to
 [browser:trunk/dports/print/ppmtomd/files/patch-Makefile.diff at 32908 patch
 the Makefile] to change "`-lpnm -lppm -lpgm -lpbm`" to "`-lnetpbm`". That
 patch could be avoided if we made symlinks for the old library names when
 installing netpbm. What do you think? I'll attach a patch and you can
 think about it.

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Ticket URL: <http://trac.macosforge.org/projects/macports/ticket/13938>
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