cumulative-dependencies.md

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Cumulative Dependencies | Microsoft Docs		11/04/2016			cpp-tools		article	C++	dependencies, cumulative cumulative dependencies in NMAKE dependencies	fa6dd777-80b8-437d-87a7-aec0ed818a49	11	corob-msft	corob	ghogen

Cumulative Dependencies

Dependencies are cumulative in a description block if a target is repeated.

For example, this set of rules,

bounce.exe : jump.obj  
bounce.exe : up.obj  
   echo Building bounce.exe...  

is evaluated as this:

bounce.exe : jump.obj up.obj  
   echo Building bounce.exe...  

Multiple targets in multiple dependency lines in a single description block are evaluated as if each were specified in a separate description block, but targets that are not in the last dependency line do not use the commands block. NMAKE attempts to use an inference rule for such targets.

For example, this set of rules,

leap.exe bounce.exe : jump.obj  
bounce.exe climb.exe : up.obj  
   echo Building bounce.exe...  

is evaluated as this:

  
leap.exe : jump.obj  
# invokes an inference rule  
bounce.exe : jump.obj up.obj  
   echo Building bounce.exe...  
climb.exe : up.obj  
   echo Building bounce.exe...  

See Also

Targets