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Merge topic 'pr.target_compile_definitions'

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3af1daa186 Help: Document target_compile_definitions handling of -D

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !1873
This commit is contained in:
Brad King
2018-03-21 13:08:48 +00:00
committed by Kitware Robot
parent 87223a24f0 3af1daa186
commit 54ae5ee1d3
1 changed files with 10 additions and 0 deletions
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Help/command/target_compile_definitions.rst
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@@ -27,3 +27,13 @@ Arguments to ``target_compile_definitions`` may use "generator expressions"
with the syntax ``$<...>``. See the :manual:`cmake-generator-expressions(7)`
manual for available expressions. See the :manual:`cmake-buildsystem(7)`
manual for more on defining buildsystem properties.
Any leading ``-D`` on an item will be removed. Empty items are ignored.
For example, the following are all equivalent:
.. code-block:: cmake
target_compile_definitions(foo PUBLIC FOO)
target_compile_definitions(foo PUBLIC -DFOO) # -D removed
target_compile_definitions(foo PUBLIC "" FOO) # "" ignored
target_compile_definitions(foo PUBLIC -D FOO) # -D becomes "", then ignored