[CMake] CMake: using dlopen

[Franck Houssen]

----- Mail original -----
> De: "Konstantin Tokarev" <annulen at yandex.ru>
> À: "Franck Houssen" <franck.houssen at inria.fr>
> Cc: cmake at cmake.org, "Roger Leigh" <rleigh at codelibre.net>
> Envoyé: Dimanche 7 Janvier 2018 17:50:40
> Objet: Re: [CMake] CMake: using dlopen
> 
> 
> 
> 07.01.2018, 19:36, "Franck Houssen" <franck.houssen at inria.fr>:
> > ----- Mail original -----
> >>  De: "Konstantin Tokarev" <annulen at yandex.ru>
> >>  À: "Franck Houssen" <franck.houssen at inria.fr>
> >>  Cc: cmake at cmake.org, "Roger Leigh" <rleigh at codelibre.net>
> >>  Envoyé: Dimanche 7 Janvier 2018 15:20:08
> >>  Objet: Re: [CMake] CMake: using dlopen
> >>
> >>  > ----- Mail original -----
> >>  >
> >>  >> De: "Roger Leigh" <rleigh at codelibre.net>
> >>  >> À: cmake at cmake.org
> >>  >> Envoyé: Samedi 6 Janvier 2018 18:42:11
> >>  >> Objet: Re: [CMake] CMake: using dlopen
> >>  >>
> >>  >> On 06/01/18 17:01, J Decker wrote:
> >>  >>> CMake/shared/modules will define the CMAKE_DL_LIBS which a very high
> >>  >>> percentage of the time will just be library 'dl' .
> >>  >
> >>  > OK. I didn't know that. But if so, why don't you see CMAKE_DL_LIBS when
> >>  > you
> >>  > run "cmake -LA ." and/or when you toggle adanced mode in ccmake ?
> >>  > What's
> >>  > the correct way to see all variables ?
> >>
> >>  Because cmake -L shows only cached variables, not all variables
> >
> > How to see all variables ?
> 
> See first part of https://stackoverflow.com/a/9328525
> 

OK, I see ! Thanks

> >
> >>  >
> >>  >>>
> >>  >>> Pretty much any man page on dlopen defines 'dl'
> >>  >>
> >>  >> On Linux. On MaxOSX and FreeBSD not at all, where the dl functions are
> >>  >> in libSystem and libc, respectively. Using CMAKE_DL_LIBS does the
> >>  >> right
> >>  >> thing on all platforms (though I wish it was an imported target to
> >>  >> make
> >>  >> exports a bit nicer).
> >>  >
> >>  > OK, thanks. So, I go with: target_link_libraries(main PUBLIC ...
> >>  > ${CMAKE_DL_LIBS})
> >>  >
> >>  >> Regards,
> >>  >> Roger
> >>  >> --
> >>  >>
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> >>  > --
> >>  >
> >>  > Powered by www.kitware.com
> >>  >
> >>  > Please keep messages on-topic and check the CMake FAQ at:
> >>  > http://www.cmake.org/Wiki/CMake_FAQ
> >>  >
> >>  > Kitware offers various services to support the CMake community. For
> >>  > more
> >>  > information on each offering, please visit:
> >>  >
> >>  > CMake Support: http://cmake.org/cmake/help/support.html
> >>  > CMake Consulting: http://cmake.org/cmake/help/consulting.html
> >>  > CMake Training Courses: http://cmake.org/cmake/help/training.html
> >>  >
> >>  > Visit other Kitware open-source projects at
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> >>  >
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> >>  --
> >>  Regards,
> >>  Konstantin
> 
> --
> Regards,
> Konstantin
>