[CMake] mixed java/c project.

[Mathieu Malaterre]

On Sat, Oct 18, 2008 at 7:48 PM, George Neill <georgen at neillnet.com> wrote:
> Hi All,
>
> On Sat, Oct 18, 2008 at 2:01 AM, George Neill <georgen at neillnet.com> wrote:
>> Hi all,
>>
>>  I am trying to convert a project to cmake which has mixed java and c
>> compilations.  Here's the project layout,
>>
>>  project/
>>     -> src/c
>>     -> src/java
>>
>> I get the java project to build fine if I use the top level
>> CMakeLists.txt file, but if I use add_subdirectory(src/java) in the
>> top level CMakeLists.txt and create a CMakeLists.txt file in src/java
>> it appears to break (below is the error)
>>
>> The -d option of the javac command line appears to be coming out wrong
>> ... CMakeFiles/luajava.dir/org/keplerproject/luajava should actually
>> be src/java/CMakeFiles/luajava.dir/org/keplerproject/luajava
>>
>> I took a look in Modules/CMakeJavaInformation.cmake and here's what I found,
>>
>> # compile a Java file into an object file
>> IF(NOT CMAKE_Java_COMPILE_OBJECT)
>>  SET(CMAKE_Java_COMPILE_OBJECT
>>    "<CMAKE_Java_COMPILER>   <FLAGS> <SOURCE> -d <OBJECT_DIR>")
>> ENDIF(NOT CMAKE_Java_COMPILE_OBJECT)
>>
>> OBJECT_DIR seems to be the wrong place,  any ideas on the best way to fix this?
>
> Well, it looks like this isn't a new issue.  (
> http://www.mail-archive.com/cmake@cmake.org/msg02564.html )
>
> I was able to get by it by doing this,
>
> SET(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}")
> SET(CMAKE_USER_MAKE_RULES_OVERRIDE "override")
>
> my override.cmake contains,
>
> # compile a Java file into an object file
> IF(NOT CMAKE_Java_COMPILE_OBJECT)
>  SET(CMAKE_Java_COMPILE_OBJECT
>    "<CMAKE_Java_COMPILER>   <FLAGS> <SOURCE> -d
> <CMAKE_CURRENT_BINARY_DIR>/<OBJECT_DIR>")
> ENDIF(NOT CMAKE_Java_COMPILE_OBJECT)
>
> Is this acceptable, or should I be doing something else?

IMHO I think it is. Please open a bug report, otherwise it might get
lost -again?-

http://cmake.org/Bug

Thanks,
-- 
Mathieu