[Cmake-commits] CMake branch, next, updated. v2.8.12.2-7773-g7424ba5

[Stephen Kelly]

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- Log -----------------------------------------------------------------
http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=7424ba51d70fd4ae25aa9521c256feef92ec4605
commit 7424ba51d70fd4ae25aa9521c256feef92ec4605
Merge: 320452d 0c54b77
Author:     Stephen Kelly <steveire at gmail.com>
AuthorDate: Tue Feb 18 10:11:30 2014 -0500
Commit:     CMake Topic Stage <kwrobot at kitware.com>
CommitDate: Tue Feb 18 10:11:30 2014 -0500

    Merge topic 'doc-usage-requirements' into next
    
    0c54b775 Help: Document the purpose of usage requirements clearly.
    586d2ce8 CMake Nightly Date Stamp


http://cmake.org/gitweb?p=cmake.git;a=commitdiff;h=0c54b775a4aaec799fbbfc89cbec07222bb806b3
commit 0c54b775a4aaec799fbbfc89cbec07222bb806b3
Author:     Stephen Kelly <steveire at gmail.com>
AuthorDate: Tue Feb 18 16:08:44 2014 +0100
Commit:     Stephen Kelly <steveire at gmail.com>
CommitDate: Tue Feb 18 16:08:44 2014 +0100

    Help: Document the purpose of usage requirements clearly.
    
    People will be tempted to put things there for convenience, thereby
    causing conflicts similar to
    
     http://thread.gmane.org/gmane.comp.compilers.clang.devel/35162/focus=35169
    
    where it is conceivable that the LLVM developers could put a flag on
    a target for convenience, which would cause conflicts for some downstreams.

diff --git a/Help/manual/cmake-buildsystem.7.rst b/Help/manual/cmake-buildsystem.7.rst
index 03eb163..d252473 100644
--- a/Help/manual/cmake-buildsystem.7.rst
+++ b/Help/manual/cmake-buildsystem.7.rst
@@ -112,6 +112,12 @@ Each command may be invoked with multiple uses of each keyword:
     INTERFACE USING_ARCHIVE_LIB
   )
 
+Note that usage requirements are not designed as a way to make downstreams
+use particular :prop_tgt:`COMPILE_OPTIONS` or
+:prop_tgt:`COMPILE_DEFINITIONS` etc for convenience only.  The contents of
+the properties must be **requirements**, not merely recommendations or
+convenience.
+
 Target Properties
 -----------------
 

-----------------------------------------------------------------------

Summary of changes:
 Help/manual/cmake-buildsystem.7.rst |    6 ++++++
 Source/CMakeVersion.cmake           |    2 +-
 2 files changed, 7 insertions(+), 1 deletion(-)


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