[MacPorts] #62801: lilypond 2.22.1_0: fails to build (macOS 11.3)

[MacPorts]

#62801: lilypond 2.22.1_0: fails to build (macOS 11.3)
---------------------------+---------------------------
  Reporter:  emcrisostomo  |      Owner:  nerdling
      Type:  defect        |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:
Resolution:                |   Keywords:  bigsur x86_64
      Port:  lilypond      |
---------------------------+---------------------------

Comment (by ggruener):

 I can confirm the problem when upgrading to `lilypond-2.22.1_0` on macOS
 11.3 and Xcode 12.5.

 Editing by hand `/opt/local/include/FlexLexer.h` to add the `override`
 keyword at line 132 fixes the problem and lilypond is upgraded correctly.

 {{{
 $ diff /opt/local/include/FlexLexer.h /opt/local/include/FlexLexer.old
 132c132
 <   void yy_switch_to_buffer( yy_buffer_state* new_buffer ) override;
 ---
 >   void yy_switch_to_buffer( yy_buffer_state* new_buffer );
 }}}

 The problem, though, should be fixed by port `flex`, responsible for this
 file:
 {{{
 $ port provides /opt/local/include/FlexLexer.h
 /opt/local/include/FlexLexer.h is provided by: flex
 }}}

 `nerdling` would you open a corresponding ticker there?

-- 
Ticket URL: <https://trac.macports.org/ticket/62801#comment:2>
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