[MacPorts] #23928: opendx autoreconf failure: error: m4_require: circular dependency of AC_LANG_COMPILER(C++)

[MacPorts]

#23928: opendx autoreconf failure: error: m4_require: circular dependency of
AC_LANG_COMPILER(C++)
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 Reporter:  morasta@…          |       Owner:  gwright@…           
     Type:  defect             |      Status:  new                 
 Priority:  Normal             |   Milestone:                      
Component:  ports              |     Version:  1.8.2               
 Keywords:                     |        Port:  opendx              
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Comment(by ryandesign@…):

 Replying to [comment:4 morasta@…]:
 > Warning: violation by /opt/local/dx

 The mtree violation is now filed as its own ticket in #24280.

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Ticket URL: <http://trac.macports.org/ticket/23928#comment:6>
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