[Cmake] some starting help wanted :-)

[Brad King]

Alexander Neundorf wrote:
> Hi, 
>  
> until now I used only some basic functions of cmake, now I want to do 
> something more with it, i.e. try to add better support for Qt and KDE. 
>  
> 1) There is a FindQt file, which searches for libqt. Now I'd like to 
> improve it this way that I can specify which version of Qt I need at least 
> and whether I need the multithreaded version of Qt or not. 

You could modify the file to look for a QT_REQUIRED_VERSION variable and 
  use its contents to check for a particular version.

> 2) With FIND_LIBRARY I was able to find a kde lib, e.g. libkdecore and its 
> path. 
> Now kde consists of a lot more libraries and I don't want to FIND_LIBRARY 
> for each one of them, because this would give me a bunch of directory 
> variables all with the same value (all kde libs should be in the same 
> dir). 
> Maybe I should simply check for one kde lib (libkdecore) and use this path 
> for all other libs too. 

You could use a FIND_PROGRAM command to locate kde-config and then use 
EXEC_PROGRAM to run kde-config --prefix.  The resulting path can then be 
used to specify the libraries with a fixed path.  This could also be 
used to check the version.

> 3) Additionally to the Qt moc preprocessor kde features a bunch of other 
> code generators (e.g. for dcop and other stuff), which have to be run 
> before the actual compiling. Where do I start to look how to implement 
> this ? 

Take a look at the implementation of the ADD_CUSTOM_COMMAND command in 
Source/cmAddCustomCommandCommand.cxx.

-Brad