[CMake] problem with ADD_CUSTOM_COMMAND - multiple outputs

[Alexander Neundorf]

Hi, 
 
with ADD_CUSTOM_COMMAND() you can specify exactly one output file. 
In KDE we have cases (e.g. kconfig_compiler) where one custom command 
produces more than one file, but e.g. two (source and header). 
 
I guess this could lead to missing dependencies, which might hurt when 
doing parallel builds. I didn't test yet, but this is probably true. What 
can I do to add the missing dependencies ? 
 
Bye 
Alex 
 

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