Am Montag, 22. Dezember 2014, 18:55:16 schrieb Daniele E. Domenichelli: > Hello Eike, > > On 22/12/14 16:39, Rolf Eike Beer wrote: > > What I would like to get is the following: when a list of libraries and > > directories is returned by PkgConfig then for every of these libraries the > > absolute path to the library is determined using find_library() using the > > given directories as hints. > > [...] > > Since this would introduce new behavior people would need to adapt > > their CMakeLists.txt to this new feature. Therefore I think it would be a > > good idea to expose this new information not by new variables, but using > > targets. > We have a macro to do exactly this and a few other things (actually 2 > macros, that diverged slightly I will make them one again as soon I as I > have some time), you can find them here: > > https://github.com/robotology/yarp/blob/master/conf/MacroStandardFindModule.cmake > https://github.com/robotology/ycm/blob/master/modules/StandardFindModule.cmake
[...] > > So if I search for OpenSSL using PkgConfig I would get a target > > PkgConfig::OpenSSL that I can link to, and that has the libraries, compile > > flags, include dirs and whatnot. > > > > Sadly, I don't quite understand all the macros in FindPkgConfig.cmake. Can > > you either point me to the right place where I would hook up something > > like that or try doing it? > > You can start from the macros I linked before for the pkg-config part, and > then have a look at the CMake modules that create imported targets > (FindQt4, FindGTK2, FindZLIB, FindGLUT, FindGLEW) for the targets part > (all the variables you need should be there already). > Let me know if you do it, I'd like to do it too one day... The imported targets was not the thing worrying me, although my experience with this is a bit limited at the moment. > About the FindPkgConfig macros documentation, what is that is not clear? It's not about the documentation of that module, but where I need to hack it into the module. The code is quite a bit of indirections, I guess I would need to do this _pkg_check_modules_internal at the end of the last foreach? Eike
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