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4 Commits

Author SHA1 Message Date
Stephen Kelly 0fa7f69c0e Add API to check if we're reading a includes or defines property. 
This will allow the implementation of the LINKED generator expression.
 2013-01-31 17:30:49 +01:00
Stephen Kelly e98799105b Make INTERFACE determined properties readable in generator expressions. 
The properties are evaluated as link-dependent interface properties when
evaluating the generator expressions.
 2013-01-20 17:06:47 +01:00
Stephen Kelly c67b8124f7 Make cycles in target properties ignored, not an error. 
Constructs such as these are an error as they are direct self-references:

 set_property(TARGET foo APPEND PROPERTY
   INCLUDE_DIRECTORIES $<TARGET_PROPERTY:foo,INCLUDE_DIRECTORIES>)
 set_property(TARGET foo APPEND PROPERTY
   INCLUDE_DIRECTORIES $<TARGET_PROPERTY:INCLUDE_DIRECTORIES>)

However, this is an indirect self-reference in a cycle, and not an error:

 set_property(TARGET foo APPEND PROPERTY
   INCLUDE_DIRECTORIES $<TARGET_PROPERTY:bar,INCLUDE_DIRECTORIES>)
 set_property(TARGET bar APPEND PROPERTY
   INCLUDE_DIRECTORIES $<TARGET_PROPERTY:foo,INCLUDE_DIRECTORIES>)
 2013-01-05 01:18:36 +01:00
Stephen Kelly 7e807472d2 Add API to check that dependent target properties form a DAG. 
Initially this will only be used to check for self-references, but
can be extended to check for cycles when chaining properties of other
targets.
 2012-09-28 08:49:21 -04:00