[CMake] CMake add_subdirectory and recompiling

[Michael Wild]

On 12/21/2011 05:25 PM, André Caron wrote:
> I've recently been surprised by the behavior of CMake when modifying
> "CMakeLists.txt" files pointed to by "add_subdirectory()" directives.
> I've asked the question on StackOverflow[1] and have gotten no clean
> answer.  If anyone is interested, there is a small bounty (50 points)
> on the question expiring in a few hours.
> 
> The question is tad bit lengthy, so I won't duplicate here.  Any reply
> on either the mailing list or to the linked StackOverflow question is
> appreciated.
> 
> Thanks!
> André
> 
> [1]: http://stackoverflow.com/questions/8479929/cmake-add-subdirectory-and-recompiling

Get rid of the file(GLOB ...). Never, ever use it unless you know
exactly what you're doing. Using it usually breaks something.

Also, you didn't say *what* changes you made that caused a full rebuild.
If you change anything that will show up on the command line (e.g.
change add_definitions(), include_directories(), etc.), this will of
course cause a rebuild.

Michael