[MacPorts] #60037: pdftk @2.02: does not build on macOS 10.15.3

[MacPorts]

#60037: pdftk @2.02: does not build on macOS 10.15.3
------------------------+------------------------
  Reporter:  jbouttier  |      Owner:  ryandesign
      Type:  defect     |     Status:  assigned
  Priority:  Normal     |  Milestone:
 Component:  ports      |    Version:  2.6.2
Resolution:             |   Keywords:
      Port:  pdftk      |
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Comment (by ryandesign):

 The problem is that pdftk builds using gcj, the gcc java compiler. gcj was
 apparently so buggy and apparently nobody involved with the gcc project
 was able or willing to fix them that gcc removed gcj entirely. That's why
 the pdftk port is stuck using the by-now very old gcc5 port, since that
 old version still contains gcj. But unfortunately macOS evolves over time
 and as we see gcc5's gcj no longer works at all on Catalina.

 What we need is a way to build pdftk that does not require gcj. Here is
 [https://forums.gentoo.org/viewtopic-t-1070648-start-0.html a Gentoo forum
 thread about that topic]. The developer of pdftk was apparently working on
 a gcj-free pdftk a few years ago, but no new version of pdftk has been
 released.

 The last information in that Gentoo thread is that someone else has done
 the conversion and released [https://gitlab.com/pdftk-java/pdftk pdftk-
 java]. We already have a port for this in MacPorts so maybe you can try
 that and see if it's a suitable replacement. If you have any issues with
 pdftk-java, you should file separate tickets about those to keep this
 ticket focused on the original pdftk.

-- 
Ticket URL: <https://trac.macports.org/ticket/60037#comment:9>
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