[CMake] Multiple executables sharing object files

[Joel Schaerer]

> 
> Maybe I am missing something, but why not create a static library and 
> share it with the executables?  Why try to reuse object files?  CMake 
> makes it very easy to create static libraries and link them to executables.
> 
> -Bill

Because then you have to relink all executables each time you change one of the 
library files, even the ones that don't rely on that file. Which isn't efficient 
either. Say you have 100 library files, and 30 executables, which depend on 
average on 20 library files. Using a intermediary static library is not going to 
help you...

Object files were probably created exactly for this, so they could be shared 
between multiple targets without being rebuilt needlessly. Why exactly isn't 
there an option to share the build directory between targets, like it was the 
standard behavior prior to 2005?

joel


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-- 
Joël Schaerer
PhD. Student
Advisors: Patrick Clarysse, Isabelle Magnin
CREATIS-LRMN, UMR CNRS 5220, Inserm U630
INSA de Lyon
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