[CMake] Path problem when building a jar file

[Robert Haines]

Hi again all,

I should have added that I am using 2.6.0 and haven't seen any Java  
mentioned in the change-log since then...

Cheers,
Rob

> I am building a jar file but I can't get the paths right within it.
>
> I have a directory structure like this
> source-root/org/some/package/<files>.java
> source-root/org/some/other/<files>.java
> and I want the compiled .class files to all go into the same jar file.
>
> If I have a CMakeLists.txt in source-root simply do a
> add_library(JarName ${FILES})
> (where FILES is a list of all the java files relative to source- 
> root) my jar file is full of paths like this:
>
> org/some/package/org/some/package/<files>.java
> org/some/other/org/some/other/<files>.java
>
> ie, because CMake builds everything in a directory relative to  
> source-root in the binary tree and then javac puts the files in  
> their package directories using this as a starting point, the  
> package structure gets duplicated.
>
> It seems as though CMake is being over zealous in its use of the -d  
> flag to javac. Either that or at the "link" step the wrong directory  
> is being passed to jar via the -C flag. I have tried to override the  
> -d and -C flags with a combination of set_source_files_properties  
> and set_target_properties with no joy.
>
> Another way I have tried is to have a CMakeLists.txt in the source- 
> root/org/some/package/ directory. If I do this I can get the paths  
> right for that particular branch of the package scheme but can't get  
> the classes in the org/some/other/ branch into the same jar file.
>
> Has anyone managed to do this with CMake? It seems to be an  
> overwhelmingly simple thing to do so I must be doing it wrong!
>
> Thanks,
> Rob
>
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-- 
Robert Haines

Research Associate, RealityGrid          Tel. : +44 (0)161 275 6067
Research Computing Services              Fax. : +44 (0)161 275 0637
University of Manchester                 Email: rhaines at manchester.ac.uk
Oxford Road                              Web  : www.realitygrid.org
Manchester, M13 9PL                           : www.rcs.manchester.ac.uk