[CMake] CMake: using dlopen

[Franck Houssen]

----- 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 ?

> > 
> > 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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