[CMake] How to make executable depend on pre-existing control file?

[Brandon J. Van Every]

Trevor Kellaway wrote:
>
> Hi,
>
> I'm try to get my link to depend on a pre-existing file that contains 
> linker segment information "link.prm".
>
> I thought that by just adding this to the executable dependency list 
> this should work:
>
>         ADD_EXECUTABLE (${THIS_APP} ${THIS_SRC} 
> ${CMAKE_SOURCE_DIR}/link.prm)
>
> Alas, it seems to have no effect. The generated "build.make" contains 
> no dependency references for "link.prm".
>
> Is this the correct way of doing this?
>

ADD_EXECUTABLE isn't taking a dependency list.  It's taking a list of 
source files used to build.  If link.prm has no relevance to the build, 
I'll wager that it is discarded.  I bet you'll need:

ADD_EXECUTABLE (${THIS_APP} ${THIS_SRC})
ADD_CUSTOM_TARGET(link_prm DEPENDS ${CMAKE_SOURCE_DIR}/link.prm)
ADD_DEPENDENCIES(${THIS_APP} link_prm)


Cheers,
Brandon Van Every

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