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add_custom_command: Evaluate generator expressions in DEPENDS

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Rely on evaluation in cmCustomCommandGenerator for the generators.

When tracing target dependencies, depend on the union of dependencies
for all configurations.
This commit is contained in:
Stephen Kelly
2014-03-07 17:20:10 +01:00
committed by Brad King
parent fb4aff058d
commit bbffccca42
6 changed files with 66 additions and 9 deletions
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4
Help/command/add_custom_command.rst
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@@ -156,3 +156,7 @@ target is built before any target using this custom command.
Additionally, if the target is an executable or library a file-level
dependency is created to cause the custom command to re-run whenever
the target is recompiled.
Arguments to ``DEPENDS`` may use "generator expressions" with the syntax
``$<...>``. See the :manual:`cmake-generator-expressions(7)` manual for
available expressions.