[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 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 ?

> > 
> >>>
> >>> 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
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> Regards,
> Konstantin
>