The following syntax fails on the Docs PR job of the Azure Pipelines:
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.. cmdoption:: --with-cxx-main
.. cmdoption:: --with-cxx-main=COMPILER
Compile the Python ``main()`` function and link Python executable with C++
compiler: ``$CXX``, or *COMPILER* if specified.
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Error:
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Warning, treated as error:
/home/vsts/work/1/s/Doc/using/configure.rst:47:Duplicate explicit target name: "cmdoption--with-cxx-main".
Makefile:49: recipe for target 'build' failed
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