[CMake] Dependencies

[Chris Scharver]

The project_target is the application executable defined within 
project/src. I would like to copy the models only if the target 
executable has been built. Consider:

project
	SUBDIRS(lib src models)
project/lib
	ADD_LIBRARY(someLib ...)
project/models
	ADD_CUSTOM_TARGET(TARGET app POST_BUILD ...)
project/src
	ADD_EXECUTABLE(app  ...)
	TARGET_LINK_LIBRARIES(app someLib ...)

In this case, someLib is properly tracked as a project_target 
dependencies. I'm hoping that specifying a target for ADD_CUSTOM_TARGET 
can behave the same way. If not, can I somehow use GLOB to obtain the 
base filename (something like basename())? Then I could use 
ADD_CUSTOM_TARGET and manually set the OUTPUT dependency to the 
destination file name.

Chris

On Oct 20, 2004, at 2:39 PM, William A. Hoffman wrote:

> What is project_target?
> The POST_BUILD custom command is used for adding commands onto an
> existing target (library, executable, custom target).  If there is
> no target called project_target then it will do nothing.
>
> If you added a
>
> ADD_CUSTOM_TARGET(project_target ALL
> DEPENDS ${MODEL_FILES})
>
> Then did the FOREACH loop I think it would work.
>
> -Bill
>
> At 02:24 PM 10/20/2004, Chris Scharver wrote:
>
>> project
>> project/models
>> project/src
>>
>> The top-level CMakeLists.txt lists the models and src directories as 
>> SUBDIRS. The models should only be copied if the source target was 
>> built. Here's the relevant portion from models/CMakeLists.txt:
>>
>> # Use GLOB to grab all the model files
>> FILE(GLOB MODEL_FILES *.iv *.jpg)
>>
>> # Copy each model file to the build directory.
>> MAKE_DIRECTORY(${EXECUTABLE_OUTPUT_PATH}/models)
>> FOREACH(modelfile ${MODEL_FILES})
>>  ADD_CUSTOM_COMMAND(TARGET project_target POST_BUILD
>>    COMMAND ${CMAKE_COMMAND}
>>    ARGS -E copy_if_different ${modelfile}
>>    ${EXECUTABLE_OUTPUT_PATH}/models/
>>    )
>> ENDFOREACH(modelfile)
>>
>> The generated Makefile doesn't contain anything for copying files. Is 
>> this due to the fact that the models directory cannot properly detect 
>> the dependency on the project_target specified in the src directory? 
>> Or does TARGET and POST_BUILD not work for Makefiles? If I instead 
>> use:
>>
>>  ADD_CUSTOM_COMMAND(OUTPUT "${modelfile}"
>>    COMMAND ${CMAKE_COMMAND}
>>    ARGS -E copy ${modelfile}
>>    ${EXECUTABLE_OUTPUT_PATH}/models/
>>    MAIN_DEPENDENCY ${EXECUTABLE_OUTPUT_PATH}/targetedreaching
>>    )
>>
>> I see the commands in the generated Makefiles, but they never 
>> execute. I'm always running make from the project root build 
>> directory.
>>
>> Chris
--
Chris Scharver
Electronic Visualization Laboratory
The University of Illinois at Chicago
Ph: 312-996-3002   FAX: 312-413-7585
<http://www.evl.uic.edu/scharver/>