[CMake] What is the preferred method of establishing the dependence of a custom command on an executable target?

[Brandon J. Van Every]

Bill Hoffman wrote:
> Actually from the wiki:
> http://www.cmake.org/Wiki/CMake_FAQ
>
> Your custom commands should look like this:
>
> ADD_CUSTOM_COMMAND(
> OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/foo0.qaz
> COMMAND ${DOIT_EXE} ${CMAKE_CURRENT_SOURCE_DIR}/someinput0.txt  
> ${CMAKE_CURRENT_BINARY_DIR}/foo0.qaz
> DEPENDS ${DOIT_EXE})

I wrote that wiki entry.


>
>
> That will make sure the DOIT_EXE is built before the command is run.  

I would swear that once upon a time, that was not true.  The DEPENDS was 
a file level dependency.  It would not trigger a target level dependency.

> Newer versions of cmake also support just using the target name there,
> so you can even have:
> ADD_CUSTOM_COMMAND(
> OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/foo0.qaz
> COMMAND ${DOIT_EXE} ${CMAKE_CURRENT_SOURCE_DIR}/someinput0.txt  
> ${CMAKE_CURRENT_BINARY_DIR}/foo0.qaz
> DEPENDS doit)
> )
>
> The wiki should be updated to show that information.  

It's a wiki, so you could.  Are you saying you want someone else to?


Cheers,
Brandon Van Every