[CMake] AUTOMOC with files on different folders

[Tiago Macarios]

Thanks Attila, really appreciate your help.

On Wed, May 11, 2016 at 11:23 PM, Attila Krasznahorkay <
attila.krasznahorkay at gmail.com> wrote:

> Hi Tiago,
>
> Indeed, that page is quite a bit misleading. And it seems to be "liked" by
> Google a lot, as most people come across it. (I also found it myself when
> looking for CMake documentation early on.)
>
> In general, listing all source files belonging to a library/executable,
> even the ones that are not compiled, is a good habit. As it makes the
> generated VS and Xcode projects much nicer to use.
>
> I didn't look at the internals of the Qt CMake code. I just realised this
> behaviour while trying to make our own code work. (It's an intuitive
> behaviour, so it wasn't too hard to figure out.) I guess the code has some
> fallback to search for headers in the same place as their corresponding
> source file. Which can make the project still work without declaring the
> header files, as long as they are in the same directory with the source
> files. I imagine that doing something more complicated to look for the
> headers would not be so easy. (I can't even think of a reliable way of
> doing it myself. You can't just rely on the include paths of your
> component, as that would introduce a lot of possible problems.)
>
> All in all, I just accepted this behaviour as-is.
>
> Cheers,
>            Attila
>
> > On 12 May 2016, at 05:20, Hendrik Sattler <post at hendrik-sattler.de>
> wrote:
> >
> >
> >
> > Am 12. Mai 2016 00:00:12 MESZ, schrieb Tiago Macarios <
> tiagomacarios at gmail.com>:
> >> Hi Attila,
> >>
> >> Thank you for your help. You are right, if I apply the following
> >> modifications it works indeed:
> >>
> >> set( proj_HEADER
> >>   include/a.h
> >> )
> >>
> >> add_library(proj SHARED ${proj_SOURCE} ${proj_HEADER})
> >>
> >> But now I got a second question. Why is adding the header files
> >> necessary?
> >> (Sorry the possibly naive question)
> >>
> >> I thought that adding the header files to the target was an
> >> anti-pattern (
> >>
> http://voices.canonical.com/jussi.pakkanen/2013/03/26/a-list-of-common-cmake-antipatterns/
> >> ). Is it related to moc generating header files during the build? If so
> >> why
> >> is it not a problem when everything is on the same folder?
> >
> > That same page has a Errata section at the end.
> >
> > --
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> gesendet.
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