I can't say I share this experience. We use this mechanism to substitute 
"standard" flags with less or more optimization and/or other options. Usually 
-O3 instead of -O2, and I don't get them both on the commandline.

Arjen

From: Brian Davis [mailto:bitmi...@gmail.com] 

>>set_source_files_properties(${CMAKE_BINARY_DIR}/path/to/file.f PROPERTIES 
>>GENERATED TRUE COMPILE_FLAGS "${FFLAG_OPT}")
 
>COMPILE flags only appends to thoes already set CMAKE_... vars.  I need a way 
>to override all the other vars on a per target basis.


 

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