Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

2017-07-13 13:01 GMT+02:00 René J. V. Bertin : > Eric Noulard wrote: > > > From the command line I doubt it. > > Adding -DCMAKE_POLICY_DEFAULT_CMP0060=NEW on the commandline works. > Good to know. > > But whatever the reason, using PNG::PNG works too. Apparently policy 60

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

Eric Noulard wrote: > From the command line I doubt it. Adding -DCMAKE_POLICY_DEFAULT_CMP0060=NEW on the commandline works. But whatever the reason, using PNG::PNG works too. Apparently policy 60 doesn't affect the IMPORTED_LOCATION target property... > Did you try to use ninja generator

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

2017-07-13 12:07 GMT+02:00 René J. V. Bertin : [...] > > > > > The thing I don't understand is that you use CMake 3.8.2 so you should > get > > the new behavior. > > Are you sure? I read from the description above that you have to set the > policy > explicitly. > You are

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

Eric Noulard wrote: > Thanks you for digging this. > I totally ignored that "feature". I guess most of us did, it's one of those things that usually works just fine but that when it breaks sends you on a nasty quest to figure out WTF is going on (IOW, makes you doubt yourself until you

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

2017-07-13 2:04 GMT+02:00 René J. V. Bertin : > Andreas Naumann wrote: > > > cmake instrospects your compiler and asks for system directories. > > Just stumbled across this documentation tidbit: > Thanks you for digging this. I totally ignored that "feature". > > >>>

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

Andreas Naumann wrote: > cmake instrospects your compiler and asks for system directories. Just stumbled across this documentation tidbit: >>> CMAKE__IMPLICIT_LINK_DIRECTORIES -- Implicit linker search path detected for language . Compilers

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

Eric Noulard wrote: > AFAIK the explanation you gave. CMake does not seem to play with -l or -L > options. As Rolf said above, apparently it does. > the FindPNG.cmake shipped with CMake does not do that either. Indeed, it sets PNG_LIBRARY to the path of libpng, and PNG_LIBRARIES to the 2

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

2017-07-12 21:14 GMT+02:00 René J. V. Bertin : > Rolf Eike Beer wrote: > > >> It seems that clang handles that variable in a somewhat different manner > >> than GCC does. Even in a very simple call on the commandline (including > the > >> -v option) I see it adds

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

Rolf Eike Beer wrote: >> It seems that clang handles that variable in a somewhat different manner >> than GCC does. Even in a very simple call on the commandline (including the >> -v option) I see it adds -L/opt/local/lib AFTER the user-supplied >> libraries, where GCC puts it before the 1st -l

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

Am Mittwoch, 12. Juli 2017, 18:31:56 schrieb René J. V. Bertin: > Andreas Naumann wrote: > > cmake instrospects your compiler and asks for system directories. Only > > these system directories will be removed and the corresponding libraries > > will be linked by -l<...>. So, you should check your

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

FWIW, I do question this rewriting feature, because it clearly can go wrong. I'd argue that programmers (or build script/cmake modules/...) usually have good reason when they give the absolute path to a library: making darn sure it's indeed that one that gets linked. While I agree that

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

Andreas Naumann wrote: > cmake instrospects your compiler and asks for system directories. Only > these system directories will be removed and the corresponding libraries > will be linked by -l<...>. So, you should check your compiler and the > environment. I had several problems years ago with

Re: [CMake] /path/to/libpng.so automatic conversion to -lpng ?

Dear Rene, cmake instrospects your compiler and asks for system directories. Only these system directories will be removed and the corresponding libraries will be linked by -l<...>. So, you should check your compiler and the environment. I had several problems years ago with the environment

[CMake] /path/to/libpng.so automatic conversion to -lpng ?

Hi, I have a target_link_libraries command that uses ${PNG_LIBRARIES} and thus *should* add something like `/path/to/libpng.so /path/to/libz.so` to the linker command. Instead, I am getting a linker command line that has `-lpng -lz`, which fails for me because the `/path/to` in question isn't