[CMake] CMake: using dlopen

[Konstantin Tokarev]

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

>
>>  >
>>  >>>
>>  >>> 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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>>  > Please keep messages on-topic and check the CMake FAQ at:
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>>  >
>>  > Kitware offers various services to support the CMake community. For more
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>>  Regards,
>>  Konstantin

-- 
Regards,
Konstantin