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Since I'm running an updated system, my build logs (in this case, GNU Radio) are cluttered with 

Deprecated command line option: -modern. This option is now always on.

I've boiled that down to SWIG as culprit. However (as usual), the SWIG documentation and changelogs don't specify when that was added, so that I'm having a hard time disabling the -command argument depending on the used SWIG version.

Since which SWIG version is that option always on?

Marcus Müller
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1 Answers1

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Intense blaming on the humongous swig/Source/Modules/Python.cxx led to the realization that this happened in git commit e4fceee12; git describe e4fceee12 yields rel-3.0.12-1146-ge4fceee12, i.e. SWIG release 3.0.12.

I've been able to disable it using 

    set(modern_keyword "-modern")
    if("${SWIG_VERSION}" VERSION_GREATER "3.0.12")
      set(modern_keyword "")
    endif()
    set(CMAKE_SWIG_FLAGS … ${modern_keyword} …)

in my CMake infrastructure.

Marcus Müller
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  • That's *after* 3.0.12, so you need to adjust your condition, since 3.0.13 would be the first release with it. – o11c Apr 11 '20 at 00:26
  • @o11c true, typo in my CMake file – fixed, thanks! (there's no 3.0.13, to my knowledge; only 4.0.0) – Marcus Müller Apr 11 '20 at 00:28