[CMake] Programmatically-generated dependencies

[Miller, Frank]

You will want to also make sure that a reconfigure happens when the xml file changes which can be done with the recently added CMAKE_CONFIGURE_DEPENDS property. If you need to support older versions of cmake, then you can use configure_file() to copy the xml file somewhere (no need to use it).

This is unfortunate. I was hoping someone would have a better solution but it looks like the feature we want doesn't exist.

http://public.kitware.com/Bug/view.php?id=2172

Frank

> -----Original Message-----
> From: CMake [mailto:cmake-bounces at cmake.org] On Behalf Of Jakub
> Zakrzewski
> Sent: Thursday, December 11, 2014 9:06 AM
> To: ax487
> Cc: cmake at cmake.org
> Subject: Re: [CMake] Programmatically-generated dependencies
>
> Hi,
>
> CMake provides functions to execute commands and capture the output.
> You would use them as a part of configure step to get dependencies.
> Then add_custom_command to actually generate the C file and use the
> output to generate the DEPENDS section.
>
> --
> Gruesse,
> Jakub
>
>
>
>
> -----Original Message-----
> From: CMake [mailto:cmake-bounces at cmake.org] On Behalf Of ax487
> Sent: Donnerstag, 11. Dezember 2014 15:49
> To: cmake at cmake.org
> Subject: Re: [CMake] Programmatically-generated dependencies
>
> *bump*
>
> On 09.12.2014 10:38, ax487 wrote:
> > Hello all,
> >
> > I am mainly asking having glib-compile-resources in mind. This little
> > program translates files into C source code to be used with the
> > gresource system. It works in the following way: You have a file.xml
> > describing the resources:
> >
> > <?xml version="1.0" encoding="UTF-8"?> <gresources> <gresource
> > prefix="/some/prefix">
> >
> > <file>some_file.txt</file>
> > </gresource>
> > </gresources>
> >
> > To generate the source you use `glib-compile-resources
> > --generate-source --target=output.c file.xml`. Clearly the generated
> > output.c depends on file.xml. But it also depends on some_file.txt. It
> > is possible to get a list of dependencies using
> > `glib-compile-resources --generate-dependencies file.xml` which will
> > output
> >
> > some_file.txt
> >
> > The situation is similar to the case of auto-generated header
> > dependencies for C/C++ source code using the "-MM" option of gcc.
> > I saw the following version on github:
> >
> > https://github.com/bgK/vba-ttb/blob/master/cmake/GResource.cmake
> >
> > which does not correctly detect dependencies, but nothing apart from
> > that. But since the process works with C/C++ source code I figured
> > there is no reason why it shouldn't also work in this case. Could
> > anyone give me some pointers on how to get this to work?
> >
> > ax487
> >
> --
>
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