dependency on generated header (Fwd: [Kde-dashboard] Failed trunk/kdesupport r1027553)

[Brad King]

David Faure wrote:
> Can someone remind me how to add a dependency on a generated header?
> 
> 
> tplugins.cpp (from taglib-extras) includes taglib_export.h (from toplevel/taglib) 
> which includes the generated taglib_config.h (in toplevel/taglib too),
> a common problem for all buildsystems; afaik there is no way to detect that dependency
> automatically, it needs to be specified explicitely; but how?

If the header is supposed to be generated in another library or target
than the one in which tplugins.cpp is built, just add a target-level
dependency:

  # extras depends on the library api
  add_dependencies(tag-extras tag)

If the header is generated in the same target, just list the header
in the target's sources.

-Brad

> ----------  Forwarded Message  ----------
> 
> Subject: [Kde-dashboard] Failed trunk/kdesupport r1027553
> Date: Thursday 24 September 2009
> From: Dirk Mueller <mueller at kde.org>
> To: kde-dashboard at kde.org
> 
> Running kdesupport build-test for revision 1027553 architecture head-i586 failed with:
> 
> Scanning dependencies of target tag-extras
> [ 97%] Building CXX object taglib-extras/taglib-extras/CMakeFiles/tag-
> extras.dir/tplugins.cpp.o
> In file included from kdesupport-1027553/taglib/include/taglib_export.h:1,
>                  from kdesupport-1027553/taglib-extras/taglib-extras/tplugins.cpp:29:
> kdesupport-1027553/taglib/include/../taglib/taglib_export.h:39:27: error: taglib_config.h: No 
> such file or directory
> make[2]: *** [taglib-extras/taglib-extras/CMakeFiles/tag-extras.dir/tplugins.cpp.o] Error 1
> make[1]: *** [taglib-extras/taglib-extras/CMakeFiles/tag-extras.dir/all] Error 2
> make: *** [all] Error 2
> 
> -------------------------------------------------------
>