[MacPorts] #47545: libtool @2.4.6 does not build on Tiger

[MacPorts]

#47545: libtool @2.4.6 does not build on Tiger
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 Reporter:  csanchezdll@…  |      Owner:  macports-tickets@…
     Type:  defect         |     Status:  new
 Priority:  Normal         |  Milestone:
Component:  ports          |    Version:  2.3.3
 Keywords:                 |       Port:  tiger
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 libtool @2.4.6 requires m4 1.4.6 or higher (1.4.16 or higher recommended)
 but m4 version included with Tiger is 1.4.2. I think it would be better to
 include a dependency with m4 port instead of just checking for a present
 m4 binary.

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Ticket URL: <https://trac.macports.org/ticket/47545>
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