[MacPorts] #62770: clang++ 11 broken by MacOS 11.3 update

[MacPorts]

#62770: clang++ 11 broken by MacOS 11.3 update
-----------------------+---------------------------
  Reporter:  haberg-1  |      Owner:  jeremyhu
      Type:  defect    |     Status:  assigned
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:  2.6.4
Resolution:            |   Keywords:  bigsur x86_64
      Port:  clang-11  |
-----------------------+---------------------------

Comment (by mascguy):

 Today I'm seeing unexpected configure failures for `mpich-clang90`,
 `mpich-clang10`, and `mpich-clang11`, on the Big Sur builders (both Intel
 and ARM).

 It's not clear from the logs precisely how things are failing under-the-
 hood, but they're certainly suspicious. And the behavior is consistent
 across all three:

 {{{
 checking size of bool... 0
 configure: error: unable to determine matching C type for C++ bool
 }}}

 The logs are available here:

 mpich-clang90: https://build.macports.org/builders/ports-
 11_x86_64-builder/builds/29469/steps/install-port/logs/stdio

 mpich-clang10: https://build.macports.org/builders/ports-
 11_x86_64-builder/builds/29467/steps/install-port/logs/stdio

 mpich-clang11: https://build.macports.org/builders/ports-
 11_x86_64-builder/builds/29468/steps/install-port/logs/stdio

 Is it possible clang 9.0 is also affected...?

-- 
Ticket URL: <https://trac.macports.org/ticket/62770#comment:16>
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