[CMake] Custom install target

[ycollette.nospam at free.fr]

Hello,

I would like to create a custom install target: install-update
The things done by this target are:
- change CMAKE_INSTALL_PREFIX to a specific directory: CMAKE_BINARY_PREFIX/PROJECT_NAME-REVISION_NUMBER
- run "make install"

I don't know how to launch a defined target from within cmake. Is there any simple solution to do that ?

Best regards,

YC